From f1c41f807cb29472d0924149e39d6ec8ad90e6a2 Mon Sep 17 00:00:00 2001 From: eb Date: Wed, 27 Sep 2006 05:14:03 +0000 Subject: Merged changes from eb/digital-wip into trunk. This includes: * renaming gnuradio-examples/python/gmsk2 to gnuradio-examples/python/digital * refactoring the digital data tx and rx test code into benchmark_tx and benchmark_rx. These accept a -m argument. can currently be selected from gmsk, dbpsk, dqpsk * Two new AGC blocks: gr_agc2: separate attack and delay rates; gr_feedforward_agc: FIR-ish compressor. Normalizes to peak envelope. * Working DBPSK mod/demod (works fine) * Working DQPSK mod/demod (works, but still needs more work) git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3662 221aa14e-8319-0410-a670-987f0aec2ac5 --- gnuradio-examples/python/Makefile.am | 2 +- gnuradio-examples/python/digital/Makefile.am | 33 ++ gnuradio-examples/python/digital/README | 77 ++++ gnuradio-examples/python/digital/benchmark_rx.py | 114 ++++++ gnuradio-examples/python/digital/benchmark_tx.py | 123 ++++++ gnuradio-examples/python/digital/fusb_options.py | 31 ++ gnuradio-examples/python/digital/gen_whitener.py | 40 ++ gnuradio-examples/python/digital/limbo/README | 12 + .../python/digital/limbo/benchmark_gmsk_rx.py | 128 +++++++ .../python/digital/limbo/benchmark_gmsk_tx.py | 150 ++++++++ .../python/digital/limbo/benchmark_mpsk_rx.py | 149 ++++++++ .../python/digital/limbo/benchmark_mpsk_tx.py | 151 ++++++++ .../python/digital/limbo/gmsk_test.py | 115 ++++++ .../python/digital/limbo/mpsk_test.py | 125 ++++++ .../python/digital/limbo/qpsk_tester.py | 127 +++++++ .../python/digital/limbo/qpsk_usrp_tester.py | 103 +++++ gnuradio-examples/python/digital/pick_bitrate.py | 143 +++++++ gnuradio-examples/python/digital/receive_path.py | 252 +++++++++++++ gnuradio-examples/python/digital/rx_voice.py | 136 +++++++ gnuradio-examples/python/digital/transmit_path.py | 232 ++++++++++++ gnuradio-examples/python/digital/tunnel.py | 290 ++++++++++++++ gnuradio-examples/python/digital/tx_voice.py | 149 ++++++++ gnuradio-examples/python/gmsk2/Makefile.am | 37 -- gnuradio-examples/python/gmsk2/README | 81 ---- .../python/gmsk2/benchmark_gmsk_rx.py | 128 ------- .../python/gmsk2/benchmark_gmsk_tx.py | 146 ------- .../python/gmsk2/benchmark_mpsk_rx.py | 149 -------- .../python/gmsk2/benchmark_mpsk_tx.py | 157 -------- gnuradio-examples/python/gmsk2/bpsk.py | 256 ------------- gnuradio-examples/python/gmsk2/dbpsk.py | 282 -------------- gnuradio-examples/python/gmsk2/dqpsk.py | 280 -------------- gnuradio-examples/python/gmsk2/fusb_options.py | 31 -- gnuradio-examples/python/gmsk2/gen_whitener.py | 40 -- gnuradio-examples/python/gmsk2/gmsk_test.py | 115 ------ gnuradio-examples/python/gmsk2/mpsk_test.py | 125 ------ gnuradio-examples/python/gmsk2/pick_bitrate.py | 143 ------- gnuradio-examples/python/gmsk2/qpsk.py | 418 --------------------- gnuradio-examples/python/gmsk2/qpsk_tester.py | 127 ------- gnuradio-examples/python/gmsk2/qpsk_usrp_tester.py | 103 ----- gnuradio-examples/python/gmsk2/receive_path.py | 150 -------- gnuradio-examples/python/gmsk2/rx_voice.py | 132 ------- gnuradio-examples/python/gmsk2/transmit_path.py | 108 ------ gnuradio-examples/python/gmsk2/tunnel.py | 310 --------------- gnuradio-examples/python/gmsk2/tx_voice.py | 139 ------- gnuradio-examples/python/mc4020/Makefile.am | 28 -- gnuradio-examples/python/mc4020/fm_demod.py | 150 -------- gnuradio-examples/python/mc4020/mc4020_fft.py | 53 --- gnuradio-examples/python/usrp/usrp_siggen.py | 8 +- 48 files changed, 2685 insertions(+), 3693 deletions(-) create mode 100644 gnuradio-examples/python/digital/Makefile.am create mode 100644 gnuradio-examples/python/digital/README create mode 100755 gnuradio-examples/python/digital/benchmark_rx.py create mode 100755 gnuradio-examples/python/digital/benchmark_tx.py create mode 100644 gnuradio-examples/python/digital/fusb_options.py create mode 100755 gnuradio-examples/python/digital/gen_whitener.py create mode 100644 gnuradio-examples/python/digital/limbo/README create mode 100755 gnuradio-examples/python/digital/limbo/benchmark_gmsk_rx.py create mode 100755 gnuradio-examples/python/digital/limbo/benchmark_gmsk_tx.py create mode 100755 gnuradio-examples/python/digital/limbo/benchmark_mpsk_rx.py create mode 100755 gnuradio-examples/python/digital/limbo/benchmark_mpsk_tx.py create mode 100755 gnuradio-examples/python/digital/limbo/gmsk_test.py create mode 100755 gnuradio-examples/python/digital/limbo/mpsk_test.py create mode 100644 gnuradio-examples/python/digital/limbo/qpsk_tester.py create mode 100644 gnuradio-examples/python/digital/limbo/qpsk_usrp_tester.py create mode 100644 gnuradio-examples/python/digital/pick_bitrate.py create mode 100644 gnuradio-examples/python/digital/receive_path.py create mode 100755 gnuradio-examples/python/digital/rx_voice.py create mode 100644 gnuradio-examples/python/digital/transmit_path.py create mode 100755 gnuradio-examples/python/digital/tunnel.py create mode 100755 gnuradio-examples/python/digital/tx_voice.py delete mode 100644 gnuradio-examples/python/gmsk2/Makefile.am delete mode 100644 gnuradio-examples/python/gmsk2/README delete mode 100755 gnuradio-examples/python/gmsk2/benchmark_gmsk_rx.py delete mode 100755 gnuradio-examples/python/gmsk2/benchmark_gmsk_tx.py delete mode 100755 gnuradio-examples/python/gmsk2/benchmark_mpsk_rx.py delete mode 100755 gnuradio-examples/python/gmsk2/benchmark_mpsk_tx.py delete mode 100644 gnuradio-examples/python/gmsk2/bpsk.py delete mode 100644 gnuradio-examples/python/gmsk2/dbpsk.py delete mode 100644 gnuradio-examples/python/gmsk2/dqpsk.py delete mode 100644 gnuradio-examples/python/gmsk2/fusb_options.py delete mode 100755 gnuradio-examples/python/gmsk2/gen_whitener.py delete mode 100755 gnuradio-examples/python/gmsk2/gmsk_test.py delete mode 100755 gnuradio-examples/python/gmsk2/mpsk_test.py delete mode 100644 gnuradio-examples/python/gmsk2/pick_bitrate.py delete mode 100644 gnuradio-examples/python/gmsk2/qpsk.py delete mode 100644 gnuradio-examples/python/gmsk2/qpsk_tester.py delete mode 100644 gnuradio-examples/python/gmsk2/qpsk_usrp_tester.py delete mode 100644 gnuradio-examples/python/gmsk2/receive_path.py delete mode 100755 gnuradio-examples/python/gmsk2/rx_voice.py delete mode 100644 gnuradio-examples/python/gmsk2/transmit_path.py delete mode 100755 gnuradio-examples/python/gmsk2/tunnel.py delete mode 100755 gnuradio-examples/python/gmsk2/tx_voice.py delete mode 100644 gnuradio-examples/python/mc4020/Makefile.am delete mode 100755 gnuradio-examples/python/mc4020/fm_demod.py delete mode 100755 gnuradio-examples/python/mc4020/mc4020_fft.py (limited to 'gnuradio-examples') diff --git a/gnuradio-examples/python/Makefile.am b/gnuradio-examples/python/Makefile.am index f548eff34..49d2ba3a8 100644 --- a/gnuradio-examples/python/Makefile.am +++ b/gnuradio-examples/python/Makefile.am @@ -19,4 +19,4 @@ # Boston, MA 02110-1301, USA. # -SUBDIRS = audio channel-coding digital_voice gmsk2 mc4020 multi_usrp usrp +SUBDIRS = audio channel-coding digital_voice digital multi_usrp usrp diff --git a/gnuradio-examples/python/digital/Makefile.am b/gnuradio-examples/python/digital/Makefile.am new file mode 100644 index 000000000..ad2fa4d68 --- /dev/null +++ b/gnuradio-examples/python/digital/Makefile.am @@ -0,0 +1,33 @@ +# +# Copyright 2004 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +EXTRA_DIST = \ + README \ + benchmark_rx.py \ + benchmark_tx.py \ + fusb_options.py \ + gen_whitener.py \ + pick_bitrate.py \ + receive_path.py \ + rx_voice.py \ + transmit_path.py \ + tunnel.py \ + tx_voice.py diff --git a/gnuradio-examples/python/digital/README b/gnuradio-examples/python/digital/README new file mode 100644 index 000000000..adc3fe078 --- /dev/null +++ b/gnuradio-examples/python/digital/README @@ -0,0 +1,77 @@ +Quick overview of what's here: + +* benchmark_tx.py: generates packets of the size you +specify and sends them across the air using the USRP. Known to work +well using the USRP with the RFX transceiver daughterboards. +You can specify the bitrate to use with the -r command line +parameter. The default is 500k. Some machines will do 1M or more. +You can select the modulation to use with the -m command +line argument. The legal values for are gmsk, dbpsk and dqpsk. + +* benchmark_tx.py: the receiver half of benchmark_tx.py. +Command line arguments are pretty much the same as rx. Works well +with a USRP and RFX transceiver daughterboards. Will also work +with TVRX daugherboard, but you'll need to fiddle with the gain. See +below. Prints a summary of each packet received and keeps a running +total of packets received, and how many of them were error free. +There are two levels of error reporting going on. If the access code +(PN code) and header of a packet were properly detected, then you'll +get an output line. If the CRC32 of the payload was correct you get +"ok = True", else "ok = False". The "pktno" is extracted from the +received packet. If there are skipped numbers, you're missing some +packets. Be sure you've got a suitable antenna connected to the TX/RX +port on each board. For the RFX-400, "70 cm" / 420 MHz antennas for ham +handi-talkies work great. These are available at ham radio supplies, +etc. The boards need to be at least 3m apart. You can also try +experimenting with the rx gain (-g command line option). + +Generally speaking, I start the rx first on one machine, and then fire +up the tx on the other machine. The tx also supports a discontinous +transmission mode where it sends bursts of 5 packets and then waits 1 +second. This is useful for ensuring that all the receiver control +loops lock up fast enough. + +* tunnel.py: This program provides a framework for building your own +MACs. It creates a "TAP" interface in the kernel, typically gr0, +and sends and receives ethernet frames through it. See +/usr/src/linux/Documentation/networking/tuntap.txt and/or Google for +"universal tun tap". The Linux 2.6 kernel includes the tun module, you +don't have to build it. You may have to "modprobe tun" if it's not +loaded by default. If /dev/net/tun doesn't exist, try "modprobe tun". + +To run this program you'll need to be root or running with the +appropriate capability to open the tun interface. You'll need to fire +up two copies on different machines. Once each is running you'll need +to ifconfig the gr0 interface to set the IP address. + +This will allow two machines to talk, but anything beyond the two +machines depends on your networking setup. Left as an exercise... + +On machine A: + + $ su + # ./tunnel.py --freq 423.0M --bitrate 500k + # # in another window on A, also as root... + # ifconfig gr0 192.168.200.1 + + +On machine B: + + $ su + # ./tunnel.py --freq 423.0M --bitrate 500k + # # in another window on B, also as root... + # ifconfig gr0 192.168.200.2 + +Now, on machine A you shold be able to ping machine B: + + $ ping 192.168.200.2 + +and you should see some output for each packet in the +tunnel.py window if you used the -v option. + +Likewise, on machine B: + + $ ping 192.168.200.1 + +This now uses a carrier sense MAC, so you should be able to ssh +between the machines, web browse, etc. diff --git a/gnuradio-examples/python/digital/benchmark_rx.py b/gnuradio-examples/python/digital/benchmark_rx.py new file mode 100755 index 000000000..26ccdac47 --- /dev/null +++ b/gnuradio-examples/python/digital/benchmark_rx.py @@ -0,0 +1,114 @@ +#!/usr/bin/env python +# +# Copyright 2005,2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, modulation_utils +from gnuradio import usrp +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +import random +import struct +import sys + +# from current dir +from receive_path import receive_path +import fusb_options + +#import os +#print os.getpid() +#raw_input('Attach and press enter: ') + + +class my_graph(gr.flow_graph): + + def __init__(self, demod_class, rx_callback, options): + gr.flow_graph.__init__(self) + self.rxpath = receive_path(self, demod_class, rx_callback, options) + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +global n_rcvd, n_right + +def main(): + global n_rcvd, n_right + + n_rcvd = 0 + n_right = 0 + + def rx_callback(ok, payload): + global n_rcvd, n_right + (pktno,) = struct.unpack('!H', payload[0:2]) + n_rcvd += 1 + if ok: + n_right += 1 + + print "ok = %5s pktno = %4d n_rcvd = %4d n_right = %4d" % ( + ok, pktno, n_rcvd, n_right) + + + demods = modulation_utils.type_1_demods() + + # Create Options Parser: + parser = OptionParser (option_class=eng_option, conflict_handler="resolve") + expert_grp = parser.add_option_group("Expert") + + parser.add_option("-m", "--modulation", type="choice", choices=demods.keys(), + default='gmsk', + help="Select modulation from: %s [default=%%default]" + % (', '.join(demods.keys()),)) + + receive_path.add_options(parser, expert_grp) + + for mod in demods.values(): + mod.add_options(expert_grp) + + fusb_options.add_options(expert_grp) + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help(sys.stderr) + sys.exit(1) + + if options.rx_freq is None: + sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") + parser.print_help(sys.stderr) + sys.exit(1) + + + # build the graph + fg = my_graph(demods[options.modulation], rx_callback, options) + + r = gr.enable_realtime_scheduling() + if r != gr.RT_OK: + print "Warning: Failed to enable realtime scheduling." + + fg.start() # start flow graph + fg.wait() # wait for it to finish + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/benchmark_tx.py b/gnuradio-examples/python/digital/benchmark_tx.py new file mode 100755 index 000000000..55f309322 --- /dev/null +++ b/gnuradio-examples/python/digital/benchmark_tx.py @@ -0,0 +1,123 @@ +#!/usr/bin/env python +# +# Copyright 2005, 2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, modulation_utils +from gnuradio import usrp +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +import random, time, struct, sys + +# from current dir +from transmit_path import transmit_path +import fusb_options + +#import os +#print os.getpid() +#raw_input('Attach and press enter') + + +class my_graph(gr.flow_graph): + def __init__(self, modulator_class, options): + gr.flow_graph.__init__(self) + self.txpath = transmit_path(self, modulator_class, options) + + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +def main(): + + def send_pkt(payload='', eof=False): + return fg.txpath.send_pkt(payload, eof) + + def rx_callback(ok, payload): + print "ok = %r, payload = '%s'" % (ok, payload) + + mods = modulation_utils.type_1_mods() + + parser = OptionParser(option_class=eng_option, conflict_handler="resolve") + expert_grp = parser.add_option_group("Expert") + + parser.add_option("-m", "--modulation", type="choice", choices=mods.keys(), + default='gmsk', + help="Select modulation from: %s [default=%%default]" + % (', '.join(mods.keys()),)) + + parser.add_option("-s", "--size", type="eng_float", default=1500, + help="set packet size [default=%default]") + parser.add_option("-M", "--megabytes", type="eng_float", default=1.0, + help="set megabytes to transmit [default=%default]") + parser.add_option("","--discontinuous", action="store_true", default=False, + help="enable discontinous transmission (bursts of 5 packets)") + + transmit_path.add_options(parser, expert_grp) + + for mod in mods.values(): + mod.add_options(expert_grp) + + fusb_options.add_options(expert_grp) + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + if options.tx_freq is None: + sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") + parser.print_help(sys.stderr) + sys.exit(1) + + # build the graph + fg = my_graph(mods[options.modulation], options) + + r = gr.enable_realtime_scheduling() + if r != gr.RT_OK: + print "Warning: failed to enable realtime scheduling" + + fg.start() # start flow graph + + + # generate and send packets + nbytes = int(1e6 * options.megabytes) + n = 0 + pktno = 0 + pkt_size = int(options.size) + + while n < nbytes: + send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) + n += pkt_size + sys.stderr.write('.') + if options.discontinuous and pktno % 5 == 4: + time.sleep(1) + pktno += 1 + + send_pkt(eof=True) + fg.wait() # wait for it to finish + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/fusb_options.py b/gnuradio-examples/python/digital/fusb_options.py new file mode 100644 index 000000000..cdb15d72b --- /dev/null +++ b/gnuradio-examples/python/digital/fusb_options.py @@ -0,0 +1,31 @@ +# +# Copyright 2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +def add_options(parser): + """ + Add Fast USB specifc options to command line parser. + + @param parser: instance of OptionParser + """ + parser.add_option("-B", "--fusb-block-size", type="int", default=0, + help="specify fast usb block size [default=%default]") + parser.add_option("-N", "--fusb-nblocks", type="int", default=0, + help="specify number of fast usb blocks [default=%default]") diff --git a/gnuradio-examples/python/digital/gen_whitener.py b/gnuradio-examples/python/digital/gen_whitener.py new file mode 100755 index 000000000..93aea2b82 --- /dev/null +++ b/gnuradio-examples/python/digital/gen_whitener.py @@ -0,0 +1,40 @@ +#!/usr/bin/env python + +from gnuradio import gr, gru +from gnuradio.eng_option import eng_option +from optparse import OptionParser +import sys + +class my_graph(gr.flow_graph): + + def __init__(self): + gr.flow_graph.__init__(self) + + parser = OptionParser(option_class=eng_option) + (options, args) = parser.parse_args () + if len(args) != 0: + parser.print_help() + raise SystemExit, 1 + + src = gr.lfsr_32k_source_s() + head = gr.head(gr.sizeof_short, 2048) + self.dst = gr.vector_sink_s() + self.connect(src, head, self.dst) + +if __name__ == '__main__': + try: + fg = my_graph() + fg.run() + f = sys.stdout + i = 0 + for s in fg.dst.data(): + f.write("%3d, " % (s & 0xff,)) + f.write("%3d, " % ((s >> 8) & 0xff,)) + i = i+2 + if i % 16 == 0: + f.write('\n') + + except KeyboardInterrupt: + pass + + diff --git a/gnuradio-examples/python/digital/limbo/README b/gnuradio-examples/python/digital/limbo/README new file mode 100644 index 000000000..fe48f4358 --- /dev/null +++ b/gnuradio-examples/python/digital/limbo/README @@ -0,0 +1,12 @@ +Files in here are in various states of disrepair and/or have been +superceded by revised code in the directory above. + +They're here until we figure out what to do with them. + + +* gmsk_test.py: stand-alone program that exercises the GMSK packet tx +and rx code. The two halves are connected with a simulated noisy +channel. It's easy to add extra instrumentation to log various internal +states. We used a variant of this code to get this working in the +first place. + diff --git a/gnuradio-examples/python/digital/limbo/benchmark_gmsk_rx.py b/gnuradio-examples/python/digital/limbo/benchmark_gmsk_rx.py new file mode 100755 index 000000000..0e072d0f6 --- /dev/null +++ b/gnuradio-examples/python/digital/limbo/benchmark_gmsk_rx.py @@ -0,0 +1,128 @@ +#!/usr/bin/env python +# +# Copyright 2005 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, blks +from gnuradio import usrp +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +import random +import struct + +# from current dir +from receive_path import receive_path +import fusb_options + +#import os +#print os.getpid() +#raw_input('Attach and press enter') + + +class my_graph(gr.flow_graph): + + def __init__(self, demod_class, rx_subdev_spec, + bitrate, decim_rate, spb, + rx_callback, options, demod_kwargs): + gr.flow_graph.__init__(self) + self.rxpath = receive_path(self, demod_class, rx_subdev_spec, + bitrate, decim_rate, spb, + rx_callback, options, demod_kwargs) + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +global n_rcvd, n_right + +def main(): + global n_rcvd, n_right + + n_rcvd = 0 + n_right = 0 + + def rx_callback(ok, payload): + global n_rcvd, n_right + (pktno,) = struct.unpack('!H', payload[0:2]) + n_rcvd += 1 + if ok: + n_right += 1 + + print "ok = %r pktno = %4d n_rcvd = %4d n_right = %4d" % ( + ok, pktno, n_rcvd, n_right) + + parser = OptionParser (option_class=eng_option) + parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, + help="select USRP Rx side A or B") + parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, + help="set Rx frequency to FREQ [default=%default]", + metavar="FREQ") + parser.add_option("-r", "--bitrate", type="eng_float", default=None, + help="specify bitrate. spb and interp will be derived.") + parser.add_option("-g", "--rx-gain", type="eng_float", default=27, + help="set rx gain") + parser.add_option("-S", "--spb", type="int", default=None, + help="set samples/baud [default=%default]") + parser.add_option("-d", "--decim", type="intx", default=None, + help="set fpga decim rate to DECIM [default=%default]") + fusb_options.add_options(parser) + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + if options.freq < 1e6: + options.freq *= 1e6 + + demod_kwargs = { } # placeholder + + # build the graph + fg = my_graph(blks.gmsk_demod, + options.rx_subdev_spec, options.bitrate, + options.decim, options.spb, rx_callback, + options, demod_kwargs) + + print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.rxpath.bitrate()),) + print "spb: %3d" % (fg.rxpath.spb(),) + print "decim: %3d" % (fg.rxpath.decim(),) + + ok = fg.rxpath.set_freq(options.freq) + if not ok: + print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(options.freq),) + raise SystemExit + + fg.rxpath.set_gain(options.rx_gain) + print "Rx gain_range: ", fg.rxpath.subdev.gain_range(), " using", fg.rxpath.gain + + r = gr.enable_realtime_scheduling() + if r != gr.RT_OK: + print "Warning: Failed to enable realtime scheduling." + + fg.start() # start flow graph + fg.wait() # wait for it to finish + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/limbo/benchmark_gmsk_tx.py b/gnuradio-examples/python/digital/limbo/benchmark_gmsk_tx.py new file mode 100755 index 000000000..ec78d24b9 --- /dev/null +++ b/gnuradio-examples/python/digital/limbo/benchmark_gmsk_tx.py @@ -0,0 +1,150 @@ +#!/usr/bin/env python +# +# Copyright 2005,2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, blks +from gnuradio import usrp +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +import random +import time +import struct +import sys + +# from current dir +from transmit_path import transmit_path +import fusb_options + +#import os +#print os.getpid() +#raw_input('Attach and press enter') + +class my_graph(gr.flow_graph): + + def __init__(self, options, mod_kwargs): + gr.flow_graph.__init__(self) + self.txpath = transmit_path(self, options, mod_kwargs) + + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +def main(): + + def send_pkt(payload='', eof=False): + return fg.txpath.send_pkt(payload, eof) + + def rx_callback(ok, payload): + print "ok = %r, payload = '%s'" % (ok, payload) + + parser = OptionParser (option_class=eng_option) + parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=None, + help="select USRP Tx side A or B") + parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, + help="set Tx and Rx frequency to FREQ [default=%default]", + metavar="FREQ") + parser.add_option("-r", "--bitrate", type="eng_float", default=None, + help="specify bitrate. spb and interp will be derived.") + parser.add_option("-S", "--spb", type="int", default=2, + help="set samples/baud [default=%default]") + parser.add_option("-i", "--interp", type="intx", default=None, + help="set fpga interpolation rate to INTERP [default=%default]") + parser.add_option("-s", "--size", type="eng_float", default=1500, + help="set packet size [default=%default]") + parser.add_option("", "--bt", type="float", default=0.3, + help="set bandwidth-time product [default=%default]") + parser.add_option("-g", "--gain", type="eng_float", default=100.0, + help="transmitter gain [default=%default]") + parser.add_option("-M", "--megabytes", type="eng_float", default=1.0, + help="set megabytes to transmit [default=%default]") + parser.add_option("","--discontinuous", action="store_true", default=False, + help="enable discontinous transmission (bursts of 5 packets)") + fusb_options.add_options(parser) + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + if options.freq < 1e6: + options.freq *= 1e6 + + pkt_size = int(options.size) + + # Add gmsk_mod modulator class to options list + options.modulation = getattr(blks, "gmsk_mod") + + # Add GMSK modulator's properties + mod_kwargs = { + 'spb': options.spb, + 'bt' : options.bt, + 'verbose' : False, + 'debug' : False, + } + + # build the graph + fg = my_graph(options, mod_kwargs) + + print "bitrate: %sbps" % (eng_notation.num_to_str(fg.txpath.bitrate()),) + print "spb: %3d" % (fg.txpath.spb(),) + print "interp: %3d" % (fg.txpath.interp(),) + + ok = fg.txpath.set_freq(options.freq) + if not ok: + print "Failed to set Tx frequency to %s" % (eng_notation.num_to_str(options.freq),) + raise SystemExit + else: + print "Transmitting on frequency %s" % (eng_notation.num_to_str(options.freq)) + + r = gr.enable_realtime_scheduling() + if r != gr.RT_OK: + print "Warning: failed to enable realtime scheduling" + else: + print "Started realtime scheduling" + + fg.start() # start flow graph + + # generate and send packets + nbytes = int(1e6 * options.megabytes) + n = 0 + pktno = 0 + + while n < nbytes: + send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) + n += pkt_size + sys.stderr.write('.') + if options.discontinuous and pktno % 5 == 4: + time.sleep(1) + pktno += 1 + + send_pkt(eof=True) + fg.wait() # wait for it to finish + fg.txpath.set_auto_tr(False) + + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/limbo/benchmark_mpsk_rx.py b/gnuradio-examples/python/digital/limbo/benchmark_mpsk_rx.py new file mode 100755 index 000000000..9bb70106f --- /dev/null +++ b/gnuradio-examples/python/digital/limbo/benchmark_mpsk_rx.py @@ -0,0 +1,149 @@ +#!/usr/bin/env python +# +# Copyright 2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, blks +from gnuradio import usrp +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +import random +import struct + +# from current dir +from bpsk import bpsk_demod +from dbpsk import dbpsk_demod +from dqpsk import dqpsk_demod +from receive_path import receive_path +import fusb_options + +if 1: + import os + print os.getpid() + raw_input('Attach and press enter') + + +class my_graph(gr.flow_graph): + + def __init__(self, demod_class, rx_subdev_spec, + bitrate, decim_rate, spb, + rx_callback, options, demod_kwargs): + gr.flow_graph.__init__(self) + self.rxpath = receive_path(self, demod_class, rx_subdev_spec, + bitrate, decim_rate, spb, + rx_callback, options, demod_kwargs) + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +global n_rcvd, n_right + +def main(): + global n_rcvd, n_right + + n_rcvd = 0 + n_right = 0 + + def rx_callback(ok, payload): + global n_rcvd, n_right + (pktno,) = struct.unpack('!H', payload[0:2]) + n_rcvd += 1 + if ok: + n_right += 1 + + print "ok = %r pktno = %4d n_rcvd = %4d n_right = %4d" % ( + ok, pktno, n_rcvd, n_right) + + parser = OptionParser (option_class=eng_option) + parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, + help="select USRP Rx side A or B") + parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, + help="set Rx frequency to FREQ [default=%default]", + metavar="FREQ") + parser.add_option("-r", "--bitrate", type="eng_float", default=None, + help="specify bitrate. spb and interp will be derived.") + parser.add_option("-S", "--spb", type="int", default=None, + help="set samples/baud [default=%default]") + parser.add_option("-d", "--decim", type="intx", default=None, + help="set fpga decim rate to DECIM [default=%default]") + parser.add_option("-m", "--modulation", type="string", default='dbpsk', + help="modulation type (bpsk, dbpsk, dqpsk) [default=%default]") + parser.add_option("", "--excess-bw", type="float", default=0.3, + help="set RRC excess bandwith factor [default=%default]") + parser.add_option("-g", "--gain", type="eng_float", default=27, + help="set rx gain") + parser.add_option("","--log", action="store_true", default=False, + help="enable diagnostic logging") + fusb_options.add_options(parser) + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + if options.freq < 1e6: + options.freq *= 1e6 + + demod_kwargs = { + 'excess_bw' : options.excess_bw, + } + + #FIXME: Needs to be worked in to overall structure; this will be fixed + # once static class definitions for modulations are defined + if(options.modulation=='bpsk'): + modulation=bpsk_demod + elif(options.modulation=='dbpsk'): + modulation=dbpsk_demod + else: + modulation=dqpsk_demod + + # build the graph + fg = my_graph(modulation, + options.rx_subdev_spec, options.bitrate, + options.decim, options.spb, + rx_callback, options, demod_kwargs) + + print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.rxpath.bitrate()),) + print "spb: %3d" % (fg.rxpath.spb(),) + print "decim: %3d" % (fg.rxpath.decim(),) + + ok = fg.rxpath.set_freq(options.freq) + if not ok: + print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(options.freq),) + raise SystemExit + + fg.rxpath.set_gain(options.gain) + print "Rx gain_range: ", fg.rxpath.subdev.gain_range(), " using", fg.rxpath.gain + + r = gr.enable_realtime_scheduling() + if r != gr.RT_OK: + print "Warning: Failed to enable realtime scheduling." + + fg.start() # start flow graph + fg.wait() # wait for it to finish + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/limbo/benchmark_mpsk_tx.py b/gnuradio-examples/python/digital/limbo/benchmark_mpsk_tx.py new file mode 100755 index 000000000..ec08fb680 --- /dev/null +++ b/gnuradio-examples/python/digital/limbo/benchmark_mpsk_tx.py @@ -0,0 +1,151 @@ +#!/usr/bin/env python +# +# Copyright 2005, 2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, blks +from gnuradio import usrp +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +import random, time, struct, sys + +# from current dir +from transmit_path import transmit_path +import fusb_options + +#import os +#print os.getpid() +#raw_input('Attach and press enter') + + +class my_graph(gr.flow_graph): + + def __init__(self, options, mod_kwargs): + gr.flow_graph.__init__(self) + self.txpath = transmit_path(self, options, mod_kwargs) + + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +def main(): + + def send_pkt(payload='', eof=False): + return fg.txpath.send_pkt(payload, eof) + + def rx_callback(ok, payload): + print "ok = %r, payload = '%s'" % (ok, payload) + + parser = OptionParser (option_class=eng_option) + parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=None, + help="select USRP Tx side A or B") + parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, + help="set Tx and Rx frequency to FREQ [default=%default]", + metavar="FREQ") + parser.add_option("-r", "--bitrate", type="eng_float", default=None, + help="specify bitrate. spb and interp will be derived.") + parser.add_option("-S", "--spb", type="int", default=2, + help="set samples/baud [default=%default]") + parser.add_option("-i", "--interp", type="intx", default=None, + help="set fpga interpolation rate to INTERP [default=%default]") + parser.add_option("-s", "--size", type="eng_float", default=1500, + help="set packet size [default=%default]") + parser.add_option("-g", "--gain", type="eng_float", default=100.0, + help="transmitter gain [default=%default]") + parser.add_option("-M", "--megabytes", type="eng_float", default=1.0, + help="set megabytes to transmit [default=%default]") + parser.add_option("","--discontinuous", action="store_true", default=False, + help="enable discontinous transmission (bursts of 5 packets)") + + parser.add_option("-m", "--modulation", type="string", default='dbpsk', + help="modulation type (bpsk, dbpsk, dqpsk) [default=%default]") + parser.add_option("", "--excess-bw", type="float", default=0.3, + help="set RRC excess bandwith factor [default=%default]") + parser.add_option("", "--no-gray-code", action="store_false", default=True, + help="Don't use gray coding on modulated bits [default=%default]") + + fusb_options.add_options(parser) + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + if options.freq < 1e6: + options.freq *= 1e6 + + pkt_size = int(options.size) + + # Add PSK modulator class to options list + options.modulation = getattr(blks, options.modulation + "_mod") + + # Add PSK modulator's properties + mod_kwargs = { + 'spb' : options.spb, + 'excess_bw' : options.excess_bw, + 'gray_code' : options.no_gray_code, + 'verbose' : False, + 'debug' : False, + } + + # build the graph + fg = my_graph(options, mod_kwargs) + + print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.txpath.bitrate()),) + print "spb: %3d" % (fg.txpath.spb(),) + print "interp: %3d" % (fg.txpath.interp(),) + + ok = fg.txpath.set_freq(options.freq) + if not ok: + print "Failed to set Tx frequency to %s" % (eng_notation.num_to_str(options.freq),) + raise SystemExit + + r = gr.enable_realtime_scheduling() + if r != gr.RT_OK: + print "Warning: failed to enable realtime scheduling" + + fg.start() # start flow graph + + # generate and send packets + nbytes = int(1e6 * options.megabytes) + n = 0 + pktno = 0 + + while n < nbytes: + send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) + n += pkt_size + sys.stderr.write('.') + if options.discontinuous and pktno % 5 == 4: + time.sleep(1) + pktno += 1 + + send_pkt(eof=True) + fg.wait() # wait for it to finish + fg.txpath.set_auto_tr(False) + + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/limbo/gmsk_test.py b/gnuradio-examples/python/digital/limbo/gmsk_test.py new file mode 100755 index 000000000..7ae69a0a9 --- /dev/null +++ b/gnuradio-examples/python/digital/limbo/gmsk_test.py @@ -0,0 +1,115 @@ +#!/usr/bin/env python + +from gnuradio import gr, blks +from gnuradio.eng_option import eng_option +from optparse import OptionParser +import random +import struct + +#import os +#print os.getpid() +#raw_input('Attach and press enter') + + +class my_graph(gr.flow_graph): + + def __init__(self, rx_callback, spb, bt, SNR, freq_error): + gr.flow_graph.__init__(self) + + fg = self + + # Tuning Parameters + gain_mu = 0.002*spb + omega = spb*(1+freq_error) + + # transmitter + self.packet_transmitter = blks.gmsk2_mod_pkts(fg, spb=spb, bt=bt) + + # add some noise + add = gr.add_cc() + noise = gr.noise_source_c(gr.GR_GAUSSIAN, pow(10.0,-SNR/20.0)) + + # channel filter + rx_filt_taps = gr.firdes.low_pass(1,spb,0.8,0.1,gr.firdes.WIN_HANN) + rx_filt = gr.fir_filter_ccf(1,rx_filt_taps) + + # receiver + self.packet_receiver = blks.gmsk2_demod_pkts(fg, callback=rx_callback, + spb=spb, gain_mu=gain_mu, + freq_error=freq_error, omega=omega) + + fg.connect (self.packet_transmitter, (add,0)) + fg.connect (noise, (add,1)) + fg.connect(add, rx_filt, self.packet_receiver) + + +class stats(object): + def __init__(self): + self.npkts = 0 + self.nright = 0 + +def main(): + st = stats() + + def send_pkt(payload='', eof=False): + fg.packet_transmitter.send_pkt(payload, eof) + + def rx_callback(ok, payload): + st.npkts += 1 + if ok: + st.nright += 1 + if len(payload) <= 16: + print "ok = %5r payload = '%s' %d/%d" % (ok, payload, st.nright, st.npkts) + else: + (pktno,) = struct.unpack('!H', payload[0:2]) + print "ok = %5r pktno = %4d len(payload) = %4d %d/%d" % (ok, pktno, len(payload), + st.nright, st.npkts) + + + parser = OptionParser (option_class=eng_option) + parser.add_option("-M", "--megabytes", type="eng_float", default=1, + help="set megabytes to transmit [default=%default]") + parser.add_option("-s", "--size", type="eng_float", default=1500, + help="set packet size [default=%default]") + parser.add_option("","--spb", type=int, default=4, + help="set samples per baud to SPB [default=%default]") + parser.add_option("", "--bt", type="eng_float", default=0.3, + help="set bandwidth time product for Gaussian filter [default=%default]") + parser.add_option("", "--snr", type="eng_float", default=20, + help="set SNR in dB for simulation [default=%default]") + parser.add_option("", "--freq-error", type="eng_float", default=0, + help="set frequency error for simulation [default=%default]") + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + pkt_size = int(options.size) + + fg = my_graph(rx_callback, options.spb, options.bt, options.snr, options.freq_error) + fg.start() + + nbytes = int(1e6 * options.megabytes) + n = 0 + pktno = 0 + + send_pkt('Hello World') + + # generate and send packets + while n < nbytes: + send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) + n += pkt_size + pktno += 1 + + send_pkt('Goodbye World') + send_pkt(eof=True) # tell modulator we're not sending any more pkts + + fg.wait() + + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/limbo/mpsk_test.py b/gnuradio-examples/python/digital/limbo/mpsk_test.py new file mode 100755 index 000000000..1f257d9c5 --- /dev/null +++ b/gnuradio-examples/python/digital/limbo/mpsk_test.py @@ -0,0 +1,125 @@ +#!/usr/bin/env python + +from gnuradio import gr, blks +from gnuradio.eng_option import eng_option +from optparse import OptionParser +import random +import struct +from mpsk_pkt import * +import cmath + +class my_graph(gr.flow_graph): + + def __init__(self, rx_callback, spb, excess_bw, SNR, freq_error, arity): + gr.flow_graph.__init__(self) + + fg = self + + # Tuning Parameters + gain_mu = 0.05/spb + + # transmitter + self.packet_transmitter = \ + mpsk_mod_pkts(fg, spb=spb, excess_bw=excess_bw, diff=True, arity=arity) + + # ---------------------------------------------------------------- + # Channel model + # ---------------------------------------------------------------- + + awgn = gr.noise_source_c(gr.GR_GAUSSIAN, pow(10.0,-SNR/20.0)) + add = gr.add_cc() # add some noise + fg.connect(awgn, (add,1)) + radians = 17*pi/180 + phase_rotate = gr.multiply_const_cc(cmath.exp(radians * 1j)) + + # ---------------------------------------------------------------- + + # channel filter + rx_filt_taps = gr.firdes.low_pass(1,spb,0.8,0.1,gr.firdes.WIN_HANN) + #rx_filt_taps = (1,) + rx_filt = gr.fir_filter_ccf(1,rx_filt_taps) + + # receiver + self.packet_receiver = \ + mpsk_demod_pkts(fg, callback=rx_callback, + excess_bw=excess_bw, arity=arity, diff=True, + costas_alpha=.005, gain_mu=gain_mu, spb=spb) + + fg.connect (self.packet_transmitter, (add,0)) + fg.connect(add, phase_rotate, rx_filt, self.packet_receiver) + + +class stats(object): + def __init__(self): + self.npkts = 0 + self.nright = 0 + +def main(): + st = stats() + + def send_pkt(payload='', eof=False): + fg.packet_transmitter.send_pkt(payload, eof) + + def rx_callback(ok, payload): + st.npkts += 1 + if ok: + st.nright += 1 + if len(payload) <= 16: + print "ok = %5r payload = '%s' %d/%d" % (ok, payload, st.nright, st.npkts) + else: + (pktno,) = struct.unpack('!H', payload[0:2]) + print "ok = %5r pktno = %4d len(payload) = %4d %d/%d" % (ok, pktno, len(payload), + st.nright, st.npkts) + + + parser = OptionParser (option_class=eng_option) + parser.add_option("-M", "--megabytes", type="eng_float", default=1, + help="set megabytes to transmit [default=%default]") + parser.add_option("-s", "--size", type="eng_float", default=1500, + help="set packet size [default=%default]") + parser.add_option("","--spb", type=int, default=4, + help="set samples per baud to SPB [default=%default]") + parser.add_option("", "--excess-bw", type="eng_float", default=0.4, + help="set excess bandwidth for RRC filter [default=%default]") + parser.add_option("", "--snr", type="eng_float", default=40, + help="set SNR in dB for simulation [default=%default]") + parser.add_option("", "--m-arity", type=int, default=4, + help="PSK arity [default=%default]") + parser.add_option("", "--freq-error", type="eng_float", default=0, + help="set frequency error for simulation [default=%default]") + + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + pkt_size = int(options.size) + + fg = my_graph(rx_callback, options.spb, options.excess_bw, options.snr, + options.freq_error, options.m_arity) + fg.start() + + nbytes = int(1e6 * options.megabytes) + n = 0 + pktno = 0 + + send_pkt('Hello World') + + # generate and send packets + while n < nbytes: + send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) + n += pkt_size + pktno += 1 + + send_pkt('Goodbye World') + send_pkt(eof=True) # tell modulator we're not sending any more pkts + + fg.wait() + + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/limbo/qpsk_tester.py b/gnuradio-examples/python/digital/limbo/qpsk_tester.py new file mode 100644 index 000000000..ea7bae2eb --- /dev/null +++ b/gnuradio-examples/python/digital/limbo/qpsk_tester.py @@ -0,0 +1,127 @@ +#!/usr/bin/env python + +import random +from gnuradio import gr + +default_access_code = '\xAC\xDD\xA4\xE2\xF2\x8C\x20\xFC' + +def string_to_1_0_list(s): + r = [] + for ch in s: + x = ord(ch) + for i in range(8): + t = (x >> i) & 0x1 + r.append(t) + + return r + +def to_1_0_string(L): + return ''.join(map(lambda x: chr(x + ord('0')), L)) + +code = string_to_1_0_list(default_access_code) +access_code = to_1_0_string(code) + +use_agc = 0 +use_rrc_tx = 1 +use_rrc_rx = 1 +use_sync_loop = 1 +use_clock_sync = 1 + +def main(): + fg = gr.flow_graph() + +# data = (1,2,3,4,5,6,7,8,9) + random.seed() + data = [random.randint(1,100) for i in range(20000)] + data[0] = 0 # you know, for the diff encoding stuff + bytes_src = gr.vector_source_b(data,False) + + k = 2 + spb = 50 + ntaps = 11*spb + excess_bw = 0.9 + threshold = 12 + constellation = (1+0j, 0+1j, -1+0j, 0-1j) + + bytes2chunks = gr.packed_to_unpacked_bb(k, gr.GR_MSB_FIRST) + diffenc = gr.diff_encoder_bb(4) + chunks2symbols = gr.chunks_to_symbols_bc(constellation) + + if use_rrc_tx: + rrc_taps_tx = gr.firdes.root_raised_cosine(spb, spb, 1.0, \ + excess_bw, ntaps) + rrc_tx = gr.interp_fir_filter_ccf(spb, rrc_taps_tx) + else: + rrc_tx = gr.interp_fir_filter_ccf(1, (1,)) + +################### CHANNEL MODEL ############################# + + phase_rotate = gr.multiply_const_cc(1-0.36j) + channel = gr.add_cc() + awgn = gr.noise_source_c(gr.GR_GAUSSIAN, 0.5) + fg.connect(awgn, (channel,1)) + +################### CHANNEL MODEL ############################# + + if use_agc: + agc = gr.agc_cc(1e-4, 1, 1) + else: + agc = gr.multiply_const_cc(1) + + # Downconverter + if use_sync_loop: + costas_alpha=0.005 + beta = costas_alpha*costas_alpha*0.25 + sync_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, 0) + else: + sync_loop = gr.multiply_const_cc(1) + + if use_rrc_rx: + rrc_taps_rx = gr.firdes.root_raised_cosine(1, spb, 1.0, \ + excess_bw, ntaps) + rrc_rx = gr.fir_filter_ccf(1, rrc_taps_rx) + else: + rrc_rx = gr.fir_filter_ccf(1, (1,)) + + # Sampler + if use_clock_sync: + mu = 0.05 + omega = spb + gain_mu = 0.05 + gain_omega = 0.25*gain_mu*gain_mu + omega_rel_limit = 0.5 + clock_sync = gr.clock_recovery_mm_cc(omega, gain_omega, mu, \ + gain_mu, omega_rel_limit) + #clock_sync.set_verbose(True); + else: + clock_sync = gr.fir_filter_ccf(1, (1,)) + + diff_phasor = gr.diff_phasor_cc() + slicer = gr.constellation_decoder_cb((constellation), (0,1,2,3)) + unpack = gr.unpack_k_bits_bb(k) + access = gr.correlate_access_code_bb(access_code,threshold) + + sink = gr.file_sink(gr.sizeof_char, 'output.dat') + + fg.connect(bytes_src, bytes2chunks, diffenc, chunks2symbols, rrc_tx) + fg.connect(rrc_tx, phase_rotate, channel, agc) + fg.connect(agc, sync_loop, rrc_rx, clock_sync, diff_phasor, slicer, sink) + + test = gr.file_sink(gr.sizeof_gr_complex, 'test.dat') + fg.connect(rrc_rx, test) + + fg.connect(chunks2symbols, gr.file_sink(gr.sizeof_gr_complex, 'rrc_tx.dat')) # into TX RRC + fg.connect(channel, gr.file_sink(gr.sizeof_gr_complex, 'channel.dat')) # Out of TX RRC + fg.connect(rrc_rx, gr.file_sink(gr.sizeof_gr_complex, 'rrc_rx.dat')) # Out of RX RRC -> clock_sync + fg.connect(clock_sync, gr.file_sink(gr.sizeof_gr_complex, 'clock_sync.dat')) # Out of M&M sync loop + fg.connect(bytes2chunks, gr.file_sink(gr.sizeof_char, 'source.dat')) + + fg.start() + fg.wait() + +if __name__ == "__main__": + main() + + + + diff --git a/gnuradio-examples/python/digital/limbo/qpsk_usrp_tester.py b/gnuradio-examples/python/digital/limbo/qpsk_usrp_tester.py new file mode 100644 index 000000000..bf7698a2b --- /dev/null +++ b/gnuradio-examples/python/digital/limbo/qpsk_usrp_tester.py @@ -0,0 +1,103 @@ +#!/usr/bin/env python + +import random +from gnuradio import gr, gru, usrp + +default_access_code = '\xAC\xDD\xA4\xE2\xF2\x8C\x20\xFC' + +def string_to_1_0_list(s): + r = [] + for ch in s: + x = ord(ch) + for i in range(8): + t = (x >> i) & 0x1 + r.append(t) + + return r + +def to_1_0_string(L): + return ''.join(map(lambda x: chr(x + ord('0')), L)) + +code = string_to_1_0_list(default_access_code) + +access_code = to_1_0_string(code) + +def main(): + + fg = gr.flow_graph() + f_rf = 5e6 + fs = 400e3 + sr = 100e3 + alpha = 0.5 + M = 4 + k = int(gru.log2(M)) + + # Source + src = usrp.source_c () + adc_rate = src.adc_rate() + usrp_decim = int(adc_rate / fs) + src.set_decim_rate(usrp_decim) + + subdev_spec = usrp.pick_rx_subdevice(src) + subdev = usrp.selected_subdev(src, subdev_spec) + print "Using RX d'board %s" % (subdev.side_and_name(),) + src.set_mux(usrp.determine_rx_mux_value(src, subdev_spec)) + src.tune(0, subdev, f_rf) + + g = subdev.gain_range() + subdev.set_gain(g[1]) + subdev.set_auto_tr(True) + + print "USRP Decimation Rate = %d" % usrp_decim + print "RF Frequency = %d" % f_rf + + agc = gr.multiply_const_cc(0.0025) + + # Downconverter + costas_alpha=0.005 + beta = costas_alpha*costas_alpha*0.25 + sync_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, 0) + + # Stage 2 +# fs2 = 200e3 +# D = int(fs / fs2) +# decimator = gr.keep_one_in_n(gr.sizeof_gr_complex, D) +# print "D = %d\nAfter decimator fs = %f" % (D, fs2) + + # Demodulator + taps = gr.firdes.root_raised_cosine(1, fs, sr, alpha, 45) + rrc = gr.fir_filter_ccf(1, taps) + + # Sampler + mu = 0.01 + omega = 4.3 + gain_mu = 0.05 + gain_omega = 0.25*gain_mu*gain_mu + omega_rel_limit = 0.5 + clock_sync = gr.clock_recovery_mm_cc(omega, gain_omega, mu, + gain_mu, omega_rel_limit) + clock_sync.set_verbose(False) + + diff_phasor = gr.diff_phasor_cc() + + threshold = 12 + constellation = (1+0j, 0+1j, -1+0j, 0-1j) + slicer = gr.constellation_decoder_cb((constellation), (0,1,2,3)) + unpack = gr.unpack_k_bits_bb(k) + access = gr.correlate_access_code_bb(access_code,threshold) + + test = gr.file_sink(gr.sizeof_gr_complex, 'test.dat') + sink = gr.file_sink(gr.sizeof_char, 'output.dat') + + fg.connect(src, agc, sync_loop, rrc, clock_sync) + fg.connect(clock_sync, diff_phasor, slicer, unpack, access, sink) + + fg.connect(slicer, gr.file_sink(gr.sizeof_char, 'chunks.dat')) + fg.connect(unpack, gr.file_sink(gr.sizeof_char, 'unpack.dat')) + fg.connect(clock_sync, gr.file_sink(gr.sizeof_gr_complex, 'phasor.dat')) + + fg.start() + fg.wait() + +if __name__ == "__main__": + main() diff --git a/gnuradio-examples/python/digital/pick_bitrate.py b/gnuradio-examples/python/digital/pick_bitrate.py new file mode 100644 index 000000000..42aefa94e --- /dev/null +++ b/gnuradio-examples/python/digital/pick_bitrate.py @@ -0,0 +1,143 @@ +# +# Copyright 2005,2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +_default_bitrate = 500e3 + +_valid_samples_per_symbol = (2,3,4,5,6,7) + +def _gen_tx_info(converter_rate): + results = [] + for samples_per_symbol in _valid_samples_per_symbol: + for interp in range(16, 512 + 1, 4): + bitrate = converter_rate / interp / samples_per_symbol + results.append((bitrate, samples_per_symbol, interp)) + results.sort() + return results + +def _gen_rx_info(converter_rate): + results = [] + for samples_per_symbol in _valid_samples_per_symbol: + for decim in range(8, 256 + 1, 2): + bitrate = converter_rate / decim / samples_per_symbol + results.append((bitrate, samples_per_symbol, decim)) + results.sort() + return results + +def _filter_info(info, samples_per_symbol, xrate): + if samples_per_symbol is not None: + info = [x for x in info if x[1] == samples_per_symbol] + if xrate is not None: + info = [x for x in info if x[2] == xrate] + return info + +def _pick_best(target_bitrate, bits_per_symbol, info): + """ + @returns tuple (bitrate, samples_per_symbol, interp_rate_or_decim_rate) + """ + if len(info) == 0: + raise RuntimeError, "info is zero length!" + + if target_bitrate is None: # return the fastest one + return info[-1] + + # convert bit rate to symbol rate + target_symbolrate = target_bitrate / bits_per_symbol + + # Find the closest matching symbol rate. + # In the event of a tie, the one with the lowest samples_per_symbol wins. + # (We already sorted them, so the first one is the one we take) + + best = info[0] + best_delta = abs(target_symbolrate - best[0]) + for x in info[1:]: + delta = abs(target_symbolrate - x[0]) + if delta < best_delta: + best_delta = delta + best = x + + # convert symbol rate back to bit rate + return ((best[0] * bits_per_symbol),) + best[1:] + +def _pick_bitrate(bitrate, bits_per_symbol, samples_per_symbol, + xrate, converter_rate, gen_info): + """ + @returns tuple (bitrate, samples_per_symbol, interp_rate_or_decim_rate) + """ + if not isinstance(bits_per_symbol, int) or bits_per_symbol < 1: + raise ValueError, "bits_per_symbol must be an int >= 1" + + if samples_per_symbol is not None and xrate is not None: # completely determined + return (float(converter_rate) / xrate / samples_per_symbol, + samples_per_symbol, xrate) + + if bitrate is None and samples_per_symbol is None and xrate is None: + bitrate = _default_bitrate + + # now we have a target bitrate and possibly an xrate or + # samples_per_symbol constraint, but not both of them. + + return _pick_best(bitrate, bits_per_symbol, + _filter_info(gen_info(converter_rate), samples_per_symbol, xrate)) + +# --------------------------------------------------------------------------------------- + +def pick_tx_bitrate(bitrate, bits_per_symbol, samples_per_symbol, + interp_rate, converter_rate=128e6): + """ + Given the 4 input parameters, return at configuration that matches + + @param bitrate: desired bitrate or None + @type bitrate: number or None + @param bits_per_symbol: E.g., BPSK -> 1, QPSK -> 2, 8-PSK -> 3 + @type bits_per_symbol: integer >= 1 + @param samples_per_symbol: samples/baud (aka samples/symbol) + @type samples_per_symbol: number or None + @param interp_rate: USRP interpolation factor + @type interp_rate: integer or None + @param converter_rate: converter sample rate in Hz + @type converter_rate: number + + @returns tuple (bitrate, samples_per_symbol, interp_rate) + """ + return _pick_bitrate(bitrate, bits_per_symbol, samples_per_symbol, + interp_rate, converter_rate, _gen_tx_info) + + +def pick_rx_bitrate(bitrate, bits_per_symbol, samples_per_symbol, + decim_rate, converter_rate=64e6): + """ + Given the 4 input parameters, return at configuration that matches + + @param bitrate: desired bitrate or None + @type bitrate: number or None + @param bits_per_symbol: E.g., BPSK -> 1, QPSK -> 2, 8-PSK -> 3 + @type bits_per_symbol: integer >= 1 + @param samples_per_symbol: samples/baud (aka samples/symbol) + @type samples_per_symbol: number or None + @param decim_rate: USRP decimation factor + @type decim_rate: integer or None + @param converter_rate: converter sample rate in Hz + @type converter_rate: number + + @returns tuple (bitrate, samples_per_symbol, decim_rate) + """ + return _pick_bitrate(bitrate, bits_per_symbol, samples_per_symbol, + decim_rate, converter_rate, _gen_rx_info) diff --git a/gnuradio-examples/python/digital/receive_path.py b/gnuradio-examples/python/digital/receive_path.py new file mode 100644 index 000000000..9d55c88dd --- /dev/null +++ b/gnuradio-examples/python/digital/receive_path.py @@ -0,0 +1,252 @@ +#!/usr/bin/env python +# +# Copyright 2005,2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, blks +from gnuradio import usrp +from gnuradio import eng_notation +import copy +import sys + +# from current dir +from pick_bitrate import pick_rx_bitrate + +# ///////////////////////////////////////////////////////////////////////////// +# receive path +# ///////////////////////////////////////////////////////////////////////////// + +class receive_path(gr.hier_block): + def __init__(self, fg, demod_class, rx_callback, options): + + options = copy.copy(options) # make a copy so we can destructively modify + + self._verbose = options.verbose + self._rx_freq = options.rx_freq # receiver's center frequency + self._rx_gain = options.rx_gain # receiver's gain + self._rx_subdev_spec = options.rx_subdev_spec # daughterboard to use + self._bitrate = options.bitrate # desired bit rate + self._decim = options.decim # Decimating rate for the USRP (prelim) + self._samples_per_symbol = options.samples_per_symbol # desired samples/symbol + self._fusb_block_size = options.fusb_block_size # usb info for USRP + self._fusb_nblocks = options.fusb_nblocks # usb info for USRP + + self._rx_callback = rx_callback # this callback is fired when there's a packet available + self._demod_class = demod_class # the demodulator_class we're using + + if self._rx_freq is None: + sys.stderr.write("-f FREQ or --freq FREQ or --rx-freq FREQ must be specified\n") + raise SystemExit + + # Set up USRP source; also adjusts decim, samples_per_symbol, and bitrate + self._setup_usrp_source() + + # copy the final answers back into options for use by demodulator + options.samples_per_symbol = self._samples_per_symbol + options.bitrate = self._bitrate + options.decim = self._decim + + # Get demod_kwargs + demod_kwargs = self._demod_class.extract_kwargs_from_options(options) + + # Design filter to get actual channel we want + sw_decim = 1 + chan_coeffs = gr.firdes.low_pass (1.0, # gain + sw_decim * self._samples_per_symbol, # sampling rate + 1.0, # midpoint of trans. band + 0.1, # width of trans. band + gr.firdes.WIN_HANN) # filter type + + # Decimating channel filter + # complex in and out, float taps + self.chan_filt = gr.fft_filter_ccc(sw_decim, chan_coeffs) + #self.chan_filt = gr.fir_filter_ccf(sw_decim, chan_coeffs) + + # receiver + self.packet_receiver = \ + blks.demod_pkts(fg, + self._demod_class(fg, **demod_kwargs), + access_code=None, + callback=self._rx_callback, + threshold=-1) + + ok = self.set_freq(self._rx_freq) + if not ok: + print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(self._rx_freq)) + raise ValueError, eng_notation.num_to_str(self._rx_freq) + + g = self.subdev.gain_range() + if options.show_rx_gain_range: + print "Rx Gain Range: minimum = %g, maximum = %g, step size = %g" \ + % (g[0], g[1], g[2]) + + self.set_gain(options.rx_gain) + + self.set_auto_tr(True) # enable Auto Transmit/Receive switching + + # Carrier Sensing Blocks + alpha = 0.001 + thresh = 30 # in dB, will have to adjust + self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha) + fg.connect(self.chan_filt, self.probe) + + # Display some information about the setup + if self._verbose: + self._print_verbage() + + fg.connect(self.u, self.chan_filt, self.packet_receiver) + gr.hier_block.__init__(self, fg, None, None) + + def _setup_usrp_source(self): + self.u = usrp.source_c (fusb_block_size=self._fusb_block_size, + fusb_nblocks=self._fusb_nblocks) + adc_rate = self.u.adc_rate() + + # derive values of bitrate, samples_per_symbol, and decim from desired info + (self._bitrate, self._samples_per_symbol, self._decim) = \ + pick_rx_bitrate(self._bitrate, self._demod_class.bits_per_symbol(), \ + self._samples_per_symbol, self._decim, adc_rate) + + self.u.set_decim_rate(self._decim) + + # determine the daughterboard subdevice we're using + if self._rx_subdev_spec is None: + self._rx_subdev_spec = usrp.pick_rx_subdevice(self.u) + self.subdev = usrp.selected_subdev(self.u, self._rx_subdev_spec) + + self.u.set_mux(usrp.determine_rx_mux_value(self.u, self._rx_subdev_spec)) + + def set_freq(self, target_freq): + """ + Set the center frequency we're interested in. + + @param target_freq: frequency in Hz + @rypte: bool + + Tuning is a two step process. First we ask the front-end to + tune as close to the desired frequency as it can. Then we use + the result of that operation and our target_frequency to + determine the value for the digital up converter. + """ + r = self.u.tune(0, self.subdev, target_freq) + if r: + return True + + return False + + def set_gain(self, gain): + """ + Sets the analog gain in the USRP + """ + if gain is None: + r = self.subdev.gain_range() + gain = (r[0] + r[1])/2 # set gain to midpoint + self.gain = gain + return self.subdev.set_gain(gain) + + def set_auto_tr(self, enable): + return self.subdev.set_auto_tr(enable) + + def bitrate(self): + return self._bitrate + + def samples_per_symbol(self): + return self._samples_per_symbol + + def decim(self): + return self._decim + + def carrier_sensed(self): + """ + Return True if we think carrier is present. + """ + #return self.probe.level() > X + return self.probe.unmuted() + + def carrier_threshold(self): + """ + Return current setting in dB. + """ + return self.probe.threshold() + + def set_carrier_threshold(self, threshold_in_db): + """ + Set carrier threshold. + + @param threshold_in_db: set detection threshold + @type threshold_in_db: float (dB) + """ + self.probe.set_threshold(threshold_in_db) + + + def add_options(normal, expert): + """ + Adds receiver-specific options to the Options Parser + """ + add_freq_option(normal) + if not normal.has_option("--bitrate"): + normal.add_option("-r", "--bitrate", type="eng_float", default=None, + help="specify bitrate. samples-per-symbol and interp/decim will be derived.") + normal.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, + help="select USRP Rx side A or B") + normal.add_option("", "--rx-gain", type="eng_float", default=None, metavar="GAIN", + help="set receiver gain in dB [default=midpoint]. See also --show-rx-gain-range") + normal.add_option("", "--show-rx-gain-range", action="store_true", default=False, + help="print min and max Rx gain available on selected daughterboard") + normal.add_option("-v", "--verbose", action="store_true", default=False) + expert.add_option("-S", "--samples-per-symbol", type="int", default=None, + help="set samples/symbol [default=%default]") + expert.add_option("", "--rx-freq", type="eng_float", default=None, + help="set Rx frequency to FREQ [default=%default]", metavar="FREQ") + expert.add_option("-d", "--decim", type="intx", default=None, + help="set fpga decimation rate to DECIM [default=%default]") + expert.add_option("", "--log", action="store_true", default=False, + help="Log all parts of flow graph to files (CAUTION: lots of data)") + + # Make a static method to call before instantiation + add_options = staticmethod(add_options) + + + def _print_verbage(self): + """ + Prints information about the receive path + """ + print "Using RX d'board %s" % (self.subdev.side_and_name(),) + print "Rx gain: %g" % (self.gain,) + print "modulation: %s" % (self._demod_class.__name__) + print "bitrate: %sb/s" % (eng_notation.num_to_str(self._bitrate)) + print "samples/symbol: %3d" % (self._samples_per_symbol) + print "decim: %3d" % (self._decim) + print "Rx Frequency: %s" % (eng_notation.num_to_str(self._rx_freq)) + # print "Rx Frequency: %f" % (self._rx_freq) + +def add_freq_option(parser): + """ + Hackery that has the -f / --freq option set both tx_freq and rx_freq + """ + def freq_callback(option, opt_str, value, parser): + parser.values.rx_freq = value + parser.values.tx_freq = value + + if not parser.has_option('--freq'): + parser.add_option('-f', '--freq', type="eng_float", + action="callback", callback=freq_callback, + help="set Tx and/or Rx frequency to FREQ [default=%default]", + metavar="FREQ") diff --git a/gnuradio-examples/python/digital/rx_voice.py b/gnuradio-examples/python/digital/rx_voice.py new file mode 100755 index 000000000..130486245 --- /dev/null +++ b/gnuradio-examples/python/digital/rx_voice.py @@ -0,0 +1,136 @@ +#!/usr/bin/env python +# +# Copyright 2005,2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, modulation_utils +from gnuradio import usrp +from gnuradio import audio +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +from gnuradio.vocoder import gsm_full_rate + +import random +import struct + +# from current dir +from receive_path import receive_path +import fusb_options + +#import os +#print os.getpid() +#raw_input('Attach and press enter') + + +class audio_tx(gr.hier_block): + def __init__(self, fg, audio_output_dev): + self.packet_src = gr.message_source(33) + voice_decoder = gsm_full_rate.decode_ps() + s2f = gr.short_to_float () + sink_scale = gr.multiply_const_ff(1.0/32767.) + audio_sink = audio.sink(8000, audio_output_dev) + fg.connect(self.packet_src, voice_decoder, s2f, sink_scale, audio_sink) + gr.hier_block.__init__(self, fg, self.packet_src, audio_sink) + + def msgq(self): + return self.packet_src.msgq() + + +class my_graph(gr.flow_graph): + + def __init__(self, demod_class, rx_callback, options): + gr.flow_graph.__init__(self) + self.rxpath = receive_path(self, demod_class, rx_callback, options) + self.audio_tx = audio_tx(self, options.audio_output) + + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +global n_rcvd, n_right + +def main(): + global n_rcvd, n_right + + n_rcvd = 0 + n_right = 0 + + def rx_callback(ok, payload): + global n_rcvd, n_right + n_rcvd += 1 + if ok: + n_right += 1 + + fg.audio_tx.msgq().insert_tail(gr.message_from_string(payload)) + + print "ok = %r n_rcvd = %4d n_right = %4d" % ( + ok, n_rcvd, n_right) + + demods = modulation_utils.type_1_demods() + + # Create Options Parser: + parser = OptionParser (option_class=eng_option, conflict_handler="resolve") + expert_grp = parser.add_option_group("Expert") + + parser.add_option("-m", "--modulation", type="choice", choices=demods.keys(), + default='gmsk', + help="Select modulation from: %s [default=%%default]" + % (', '.join(demods.keys()),)) + parser.add_option("-O", "--audio-output", type="string", default="", + help="pcm output device name. E.g., hw:0,0 or /dev/dsp") + + receive_path.add_options(parser, expert_grp) + + for mod in demods.values(): + mod.add_options(expert_grp) + + fusb_options.add_options(expert_grp) + + parser.set_defaults(bitrate=50e3) # override default bitrate default + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help(sys.stderr) + sys.exit(1) + + if options.rx_freq is None: + sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") + parser.print_help(sys.stderr) + sys.exit(1) + + + # build the graph + fg = my_graph(demods[options.modulation], rx_callback, options) + + r = gr.enable_realtime_scheduling() + if r != gr.RT_OK: + print "Warning: Failed to enable realtime scheduling." + + fg.start() # start flow graph + fg.wait() # wait for it to finish + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/transmit_path.py b/gnuradio-examples/python/digital/transmit_path.py new file mode 100644 index 000000000..5c4017362 --- /dev/null +++ b/gnuradio-examples/python/digital/transmit_path.py @@ -0,0 +1,232 @@ +# +# Copyright 2005,2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, blks +from gnuradio import usrp +from gnuradio import eng_notation + +import copy +import sys + +# from current dir +from pick_bitrate import pick_tx_bitrate + +# ///////////////////////////////////////////////////////////////////////////// +# transmit path +# ///////////////////////////////////////////////////////////////////////////// + +class transmit_path(gr.hier_block): + def __init__(self, fg, modulator_class, options): + ''' + See below for what options should hold + ''' + + options = copy.copy(options) # make a copy so we can destructively modify + + self._verbose = options.verbose + self._tx_freq = options.tx_freq # tranmitter's center frequency + self._tx_amplitude = options.tx_amplitude # digital amplitude sent to USRP + self._tx_subdev_spec = options.tx_subdev_spec # daughterboard to use + self._bitrate = options.bitrate # desired bit rate + self._interp = options.interp # interpolating rate for the USRP (prelim) + self._samples_per_symbol = options.samples_per_symbol # desired samples/baud + self._fusb_block_size = options.fusb_block_size # usb info for USRP + self._fusb_nblocks = options.fusb_nblocks # usb info for USRP + + self._modulator_class = modulator_class # the modulator_class we are using + + if self._tx_freq is None: + sys.stderr.write("-f FREQ or --freq FREQ or --tx-freq FREQ must be specified\n") + raise SystemExit + + # Set up USRP sink; also adjusts interp, samples_per_symbol, and bitrate + self._setup_usrp_sink() + + # copy the final answers back into options for use by modulator + options.samples_per_symbol = self._samples_per_symbol + options.bitrate = self._bitrate + options.interp = self._interp + + # Get mod_kwargs + mod_kwargs = self._modulator_class.extract_kwargs_from_options(options) + + # Set center frequency of USRP + ok = self.set_freq(self._tx_freq) + if not ok: + print "Failed to set Tx frequency to %s" % (eng_notation.num_to_str(self._tx_freq),) + raise ValueError + + # transmitter + self.packet_transmitter = \ + blks.mod_pkts(fg, + self._modulator_class(fg, **mod_kwargs), + access_code=None, + msgq_limit=4, + pad_for_usrp=True) + + + # Set the USRP for maximum transmit gain + # (Note that on the RFX cards this is a nop.) + self.set_gain(self.subdev.gain_range()[0]) + + self.amp = gr.multiply_const_cc(1) + self.set_tx_amplitude(self._tx_amplitude) + + # enable Auto Transmit/Receive switching + self.set_auto_tr(True) + + # Display some information about the setup + if self._verbose: + self._print_verbage() + + # Create and setup transmit path flow graph + fg.connect(self.packet_transmitter, self.amp, self.u) + gr.hier_block.__init__(self, fg, None, None) + + def _setup_usrp_sink(self): + """ + Creates a USRP sink, determines the settings for best bitrate, + and attaches to the transmitter's subdevice. + """ + self.u = usrp.sink_c(fusb_block_size=self._fusb_block_size, + fusb_nblocks=self._fusb_nblocks) + dac_rate = self.u.dac_rate(); + + # derive values of bitrate, samples_per_symbol, and interp from desired info + (self._bitrate, self._samples_per_symbol, self._interp) = \ + pick_tx_bitrate(self._bitrate, self._modulator_class.bits_per_symbol(), + self._samples_per_symbol, self._interp, dac_rate) + + self.u.set_interp_rate(self._interp) + + # determine the daughterboard subdevice we're using + if self._tx_subdev_spec is None: + self._tx_subdev_spec = usrp.pick_tx_subdevice(self.u) + self.u.set_mux(usrp.determine_tx_mux_value(self.u, self._tx_subdev_spec)) + self.subdev = usrp.selected_subdev(self.u, self._tx_subdev_spec) + + + def set_freq(self, target_freq): + """ + Set the center frequency we're interested in. + + @param target_freq: frequency in Hz + @rypte: bool + + Tuning is a two step process. First we ask the front-end to + tune as close to the desired frequency as it can. Then we use + the result of that operation and our target_frequency to + determine the value for the digital up converter. + """ + r = self.u.tune(self.subdev._which, self.subdev, target_freq) + if r: + return True + + return False + + def set_gain(self, gain): + """ + Sets the analog gain in the USRP + """ + self.gain = gain + self.subdev.set_gain(gain) + + def set_tx_amplitude(self, ampl): + """ + Sets the transmit amplitude sent to the USRP + @param: ampl 0 <= ampl < 32768. Try 8000 + """ + self._tx_amplitude = max(0.0, min(ampl, 32767.0)) + self.amp.set_k(self._tx_amplitude) + + def set_auto_tr(self, enable): + """ + Turns on auto transmit/receive of USRP daughterboard (if exits; else ignored) + """ + return self.subdev.set_auto_tr(enable) + + def send_pkt(self, payload='', eof=False): + """ + Calls the transmitter method to send a packet + """ + return self.packet_transmitter.send_pkt(payload, eof) + + def bitrate(self): + return self._bitrate + + def samples_per_symbol(self): + return self._samples_per_symbol + + def interp(self): + return self._interp + + def add_options(normal, expert): + """ + Adds transmitter-specific options to the Options Parser + """ + add_freq_option(normal) + if not normal.has_option('--bitrate'): + normal.add_option("-r", "--bitrate", type="eng_float", default=None, + help="specify bitrate. samples-per-symbol and interp/decim will be derived.") + normal.add_option("-T", "--tx-subdev-spec", type="subdev", default=None, + help="select USRP Tx side A or B") + normal.add_option("", "--tx-amplitude", type="eng_float", default=12000, metavar="AMPL", + help="set transmitter digital amplitude: 0 <= AMPL < 32768 [default=%default]") + normal.add_option("-v", "--verbose", action="store_true", default=False) + + expert.add_option("-S", "--samples-per-symbol", type="int", default=None, + help="set samples/symbol [default=%default]") + expert.add_option("", "--tx-freq", type="eng_float", default=None, + help="set transmit frequency to FREQ [default=%default]", metavar="FREQ") + expert.add_option("-i", "--interp", type="intx", default=None, + help="set fpga interpolation rate to INTERP [default=%default]") + expert.add_option("", "--log", action="store_true", default=False, + help="Log all parts of flow graph to file (CAUTION: lots of data)") + + # Make a static method to call before instantiation + add_options = staticmethod(add_options) + + def _print_verbage(self): + """ + Prints information about the transmit path + """ + print "Using TX d'board %s" % (self.subdev.side_and_name(),) + print "Tx amplitude %s" % (self._tx_amplitude) + print "modulation: %s" % (self._modulator_class.__name__) + print "bitrate: %sb/s" % (eng_notation.num_to_str(self._bitrate)) + print "samples/symbol: %3d" % (self._samples_per_symbol) + print "interp: %3d" % (self._interp) + print "Tx Frequency: %s" % (eng_notation.num_to_str(self._tx_freq)) + + +def add_freq_option(parser): + """ + Hackery that has the -f / --freq option set both tx_freq and rx_freq + """ + def freq_callback(option, opt_str, value, parser): + parser.values.rx_freq = value + parser.values.tx_freq = value + + if not parser.has_option('--freq'): + parser.add_option('-f', '--freq', type="eng_float", + action="callback", callback=freq_callback, + help="set Tx and/or Rx frequency to FREQ [default=%default]", + metavar="FREQ") diff --git a/gnuradio-examples/python/digital/tunnel.py b/gnuradio-examples/python/digital/tunnel.py new file mode 100755 index 000000000..56229f536 --- /dev/null +++ b/gnuradio-examples/python/digital/tunnel.py @@ -0,0 +1,290 @@ +#!/usr/bin/env python +# +# Copyright 2005,2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + + +# ///////////////////////////////////////////////////////////////////////////// +# +# This code sets up up a virtual ethernet interface (typically gr0), +# and relays packets between the interface and the GNU Radio PHY+MAC +# +# What this means in plain language, is that if you've got a couple +# of USRPs on different machines, and if you run this code on those +# machines, you can talk between them using normal TCP/IP networking. +# +# ///////////////////////////////////////////////////////////////////////////// + + +from gnuradio import gr, gru, modulation_utils +from gnuradio import usrp +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +import random +import time +import struct +import sys +import os + +# from current dir +from transmit_path import transmit_path +from receive_path import receive_path +import fusb_options + +#print os.getpid() +#raw_input('Attach and press enter') + + +# ///////////////////////////////////////////////////////////////////////////// +# +# Use the Universal TUN/TAP device driver to move packets to/from kernel +# +# See /usr/src/linux/Documentation/networking/tuntap.txt +# +# ///////////////////////////////////////////////////////////////////////////// + +# Linux specific... +# TUNSETIFF ifr flags from + +IFF_TUN = 0x0001 # tunnel IP packets +IFF_TAP = 0x0002 # tunnel ethernet frames +IFF_NO_PI = 0x1000 # don't pass extra packet info +IFF_ONE_QUEUE = 0x2000 # beats me ;) + +def open_tun_interface(tun_device_filename): + from fcntl import ioctl + + mode = IFF_TAP | IFF_NO_PI + TUNSETIFF = 0x400454ca + + tun = os.open(tun_device_filename, os.O_RDWR) + ifs = ioctl(tun, TUNSETIFF, struct.pack("16sH", "gr%d", mode)) + ifname = ifs[:16].strip("\x00") + return (tun, ifname) + + +# ///////////////////////////////////////////////////////////////////////////// +# the flow graph +# ///////////////////////////////////////////////////////////////////////////// + +class my_graph(gr.flow_graph): + + def __init__(self, mod_class, demod_class, + rx_callback, options): + + gr.flow_graph.__init__(self) + self.txpath = transmit_path(self, mod_class, options) + self.rxpath = receive_path(self, demod_class, rx_callback, options) + + def send_pkt(self, payload='', eof=False): + return self.txpath.send_pkt(payload, eof) + + def carrier_sensed(self): + """ + Return True if the receive path thinks there's carrier + """ + return self.rxpath.carrier_sensed() + + +# ///////////////////////////////////////////////////////////////////////////// +# Carrier Sense MAC +# ///////////////////////////////////////////////////////////////////////////// + +class cs_mac(object): + """ + Prototype carrier sense MAC + + Reads packets from the TUN/TAP interface, and sends them to the PHY. + Receives packets from the PHY via phy_rx_callback, and sends them + into the TUN/TAP interface. + + Of course, we're not restricted to getting packets via TUN/TAP, this + is just an example. + """ + def __init__(self, tun_fd, verbose=False): + self.tun_fd = tun_fd # file descriptor for TUN/TAP interface + self.verbose = verbose + self.fg = None # flow graph (access to PHY) + + def set_flow_graph(self, fg): + self.fg = fg + + def phy_rx_callback(self, ok, payload): + """ + Invoked by thread associated with PHY to pass received packet up. + + @param ok: bool indicating whether payload CRC was OK + @param payload: contents of the packet (string) + """ + if self.verbose: + print "Rx: ok = %r len(payload) = %4d" % (ok, len(payload)) + if ok: + os.write(self.tun_fd, payload) + + def main_loop(self): + """ + Main loop for MAC. + Only returns if we get an error reading from TUN. + + FIXME: may want to check for EINTR and EAGAIN and reissue read + """ + min_delay = 0.001 # seconds + + while 1: + payload = os.read(self.tun_fd, 10*1024) + if not payload: + self.fg.send_pkt(eof=True) + break + + if self.verbose: + print "Tx: len(payload) = %4d" % (len(payload),) + + delay = min_delay + while self.fg.carrier_sensed(): + sys.stderr.write('B') + time.sleep(delay) + if delay < 0.050: + delay = delay * 2 # exponential back-off + + self.fg.send_pkt(payload) + + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +def main(): + + mods = modulation_utils.type_1_mods() + demods = modulation_utils.type_1_demods() + + parser = OptionParser (option_class=eng_option, conflict_handler="resolve") + expert_grp = parser.add_option_group("Expert") + + parser.add_option("-m", "--modulation", type="choice", choices=mods.keys(), + default='gmsk', + help="Select modulation from: %s [default=%%default]" + % (', '.join(mods.keys()),)) + + parser.add_option("-v","--verbose", action="store_true", default=False) + expert_grp.add_option("-c", "--carrier-threshold", type="eng_float", default=30, + help="set carrier detect threshold (dB) [default=%default]") + expert_grp.add_option("","--tun-device-filename", default="/dev/net/tun", + help="path to tun device file [default=%default]") + + transmit_path.add_options(parser, expert_grp) + receive_path.add_options(parser, expert_grp) + + for mod in mods.values(): + mod.add_options(expert_grp) + + for demod in demods.values(): + demod.add_options(expert_grp) + + fusb_options.add_options(expert_grp) + + (options, args) = parser.parse_args () + if len(args) != 0: + parser.print_help(sys.stderr) + sys.exit(1) + + if options.rx_freq is None or options.tx_freq is None: + sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") + parser.print_help(sys.stderr) + sys.exit(1) + + # open the TUN/TAP interface + (tun_fd, tun_ifname) = open_tun_interface(options.tun_device_filename) + + # Attempt to enable realtime scheduling + r = gr.enable_realtime_scheduling() + if r == gr.RT_OK: + realtime = True + else: + realtime = False + print "Note: failed to enable realtime scheduling" + + + # If the user hasn't set the fusb_* parameters on the command line, + # pick some values that will reduce latency. + + if options.fusb_block_size == 0 and options.fusb_nblocks == 0: + if realtime: # be more aggressive + options.fusb_block_size = gr.prefs().get_long('fusb', 'rt_block_size', 1024) + options.fusb_nblocks = gr.prefs().get_long('fusb', 'rt_nblocks', 16) + else: + options.fusb_block_size = gr.prefs().get_long('fusb', 'block_size', 4096) + options.fusb_nblocks = gr.prefs().get_long('fusb', 'nblocks', 16) + + #print "fusb_block_size =", options.fusb_block_size + #print "fusb_nblocks =", options.fusb_nblocks + + # instantiate the MAC + mac = cs_mac(tun_fd, verbose=True) + + + # build the graph (PHY) + fg = my_graph(mods[options.modulation], + demods[options.modulation], + mac.phy_rx_callback, + options) + + mac.set_flow_graph(fg) # give the MAC a handle for the PHY + + if fg.txpath.bitrate() != fg.rxpath.bitrate(): + print "WARNING: Transmit bitrate = %sb/sec, Receive bitrate = %sb/sec" % ( + eng_notation.num_to_str(fg.txpath.bitrate()), + eng_notation.num_to_str(fg.rxpath.bitrate())) + + print "modulation: %s" % (options.modulation,) + print "freq: %s" % (eng_notation.num_to_str(options.tx_freq)) + print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.txpath.bitrate()),) + print "samples/symbol: %3d" % (fg.txpath.samples_per_symbol(),) + #print "interp: %3d" % (fg.txpath.interp(),) + #print "decim: %3d" % (fg.rxpath.decim(),) + + fg.rxpath.set_carrier_threshold(options.carrier_threshold) + print "Carrier sense threshold:", options.carrier_threshold, "dB" + + print + print "Allocated virtual ethernet interface: %s" % (tun_ifname,) + print "You must now use ifconfig to set its IP address. E.g.," + print + print " $ sudo ifconfig %s 192.168.200.1" % (tun_ifname,) + print + print "Be sure to use a different address in the same subnet for each machine." + print + + + fg.start() # Start executing the flow graph (runs in separate threads) + + mac.main_loop() # don't expect this to return... + + fg.stop() # but if it does, tell flow graph to stop. + fg.wait() # wait for it to finish + + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/digital/tx_voice.py b/gnuradio-examples/python/digital/tx_voice.py new file mode 100755 index 000000000..eba0c3c71 --- /dev/null +++ b/gnuradio-examples/python/digital/tx_voice.py @@ -0,0 +1,149 @@ +#!/usr/bin/env python +# +# Copyright 2005,2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gru, modulation_utils +from gnuradio import usrp +from gnuradio import audio +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +from gnuradio.vocoder import gsm_full_rate + +import random +import time +import struct +import sys + +# from current dir +from transmit_path import transmit_path +import fusb_options + +#import os +#print os.getpid() +#raw_input('Attach and press enter') + + +class audio_rx(gr.hier_block): + def __init__(self, fg, audio_input_dev): + sample_rate = 8000 + src = audio.source(sample_rate, audio_input_dev) + src_scale = gr.multiply_const_ff(32767) + f2s = gr.float_to_short() + voice_coder = gsm_full_rate.encode_sp() + self.packets_from_encoder = gr.msg_queue() + packet_sink = gr.message_sink(33, self.packets_from_encoder, False) + fg.connect(src, src_scale, f2s, voice_coder, packet_sink) + gr.hier_block.__init__(self, fg, src, packet_sink) + + def get_encoded_voice_packet(self): + return self.packets_from_encoder.delete_head() + + +class my_graph(gr.flow_graph): + + def __init__(self, modulator_class, options): + gr.flow_graph.__init__(self) + self.txpath = transmit_path(self, modulator_class, options) + self.audio_rx = audio_rx(self, options.audio_input) + + + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +def main(): + + def send_pkt(payload='', eof=False): + return fg.txpath.send_pkt(payload, eof) + + def rx_callback(ok, payload): + print "ok = %r, payload = '%s'" % (ok, payload) + + mods = modulation_utils.type_1_mods() + + parser = OptionParser(option_class=eng_option, conflict_handler="resolve") + expert_grp = parser.add_option_group("Expert") + + parser.add_option("-m", "--modulation", type="choice", choices=mods.keys(), + default='gmsk', + help="Select modulation from: %s [default=%%default]" + % (', '.join(mods.keys()),)) + parser.add_option("-M", "--megabytes", type="eng_float", default=0, + help="set megabytes to transmit [default=inf]") + parser.add_option("-I", "--audio-input", type="string", default="", + help="pcm input device name. E.g., hw:0,0 or /dev/dsp") + + transmit_path.add_options(parser, expert_grp) + + for mod in mods.values(): + mod.add_options(expert_grp) + + fusb_options.add_options(expert_grp) + + parser.set_defaults(bitrate=50e3) # override default bitrate default + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + if options.tx_freq is None: + sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") + parser.print_help(sys.stderr) + sys.exit(1) + + + # build the graph + fg = my_graph(mods[options.modulation], options) + + r = gr.enable_realtime_scheduling() + if r != gr.RT_OK: + print "Warning: failed to enable realtime scheduling" + + + fg.start() # start flow graph + + # generate and send packets + nbytes = int(1e6 * options.megabytes) + n = 0 + pktno = 0 + + while nbytes == 0 or n < nbytes: + packet = fg.audio_rx.get_encoded_voice_packet() + s = packet.to_string() + send_pkt(s) + n += len(s) + sys.stderr.write('.') + pktno += 1 + + send_pkt(eof=True) + fg.wait() # wait for it to finish + fg.txpath.set_auto_tr(False) + + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass diff --git a/gnuradio-examples/python/gmsk2/Makefile.am b/gnuradio-examples/python/gmsk2/Makefile.am deleted file mode 100644 index 9c5c88dc7..000000000 --- a/gnuradio-examples/python/gmsk2/Makefile.am +++ /dev/null @@ -1,37 +0,0 @@ -# -# Copyright 2004 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -EXTRA_DIST = \ - README \ - benchmark_gmsk_rx.py \ - benchmark_gmsk_tx.py \ - benchmark_mpsk_rx.py \ - benchmark_mpsk_tx.py \ - fusb_options.py \ - gen_whitener.py \ - gmsk_test.py \ - pick_bitrate.py \ - receive_path.py \ - transmit_path.py - - - - diff --git a/gnuradio-examples/python/gmsk2/README b/gnuradio-examples/python/gmsk2/README deleted file mode 100644 index b3c343e4b..000000000 --- a/gnuradio-examples/python/gmsk2/README +++ /dev/null @@ -1,81 +0,0 @@ -Quick overview of what's here: - -* gmsk_test.py: stand-alone program that exercises the GMSK packet tx -and rx code. The two halves are connected with a simulated noisy -channel. It's easy to add extra instrumentation to log various internal -states. We used a variant of this code to get this working in the -first place. - -* benchmark_gmsk_tx.py: generates packets of the size you -specify and sends them across the air using the USRP. Known to work -well using the USRP with the Flex 400 transceiver daughterboard. -You can specify the bitrate to use with the -r command line -parameter. The default is 500k. Some machines will do 1M or more. - -* benchmark_gmsk_rx.py: the receiver half of benchmark_gmsk_tx.py. -Command line arguments are pretty much the same as tx. Works well -with a USRP and Flex 400 transceiver daughterboard. Will also work -with TVRX daugherboard, but you'll need to fiddle with the gain. See -below. Prints a summary of each packet received and keeps a running -total of packets received, and how many of them were error free. -There are two levels of error reporting going on. If the access code -(PN code) and header of a packet were properly detected, then you'll -get an output line. If the CRC32 of the payload was correct you get -"ok = True", else "ok = False". The "pktno" is extracted from the -received packet. If there are skipped numbers, you're missing some -packets. Be sure you've got a suitable antenna connected to the TX/RX -port on each board. A "70 cm" / 420 MHz antenna for a ham -handi-talkie works great. These are available at ham radio supplies, -etc. The boards need to be at least 3m apart. You can also try -experimenting with the rx gain (-g command line option). - -Generally speaking, I start the rx first on one machine, and then fire -up the tx on the other machine. The tx also supports a discontinous -transmission mode where it sends bursts of 5 packets and then waits 1 -second. This is useful for ensuring that all the receiver control -loops lock up fast enough. - -* tunnel.py: This program provides a framework for building your own -MACs. It creates a "TAP" interface in the kernel, typically gr0, -and sends and receives ethernet frames through it. See -/usr/src/linux/Documentation/networking/tuntap.txt and/or Google for -"universal tun tap". The Linux 2.6 kernel includes the tun module, you -don't have to build it. You may have to "modprobe tun" if it's not -loaded by default. If /dev/net/tun doesn't exist, try "modprobe tun". - -To run this program you'll need to be root or running with the -appropriate capability to open the tun interface. You'll need to fire -up two copies on different machines. Once each is running you'll need -to ifconfig the gr0 interface to set the IP address. - -This will allow two machines to talk, but anything beyond the two -machines depends on your networking setup. Left as an exercise... - -On machine A: - - $ su - # ./tunnel.py --freq 423.0M --bitrate 500k - # # in another window on A, also as root... - # ifconfig gr0 10.10.10.1 - - -On machine B: - - $ su - # ./tunnel.py --freq 423.0M --bitrate 500k - # # in another window on B, also as root... - # ifconfig gr0 10.10.10.2 - -Now, on machine A you shold be able to ping machine B: - - $ ping 10.10.10.2 - -and you should see some output for each packet in the -tunnel.py window if you used the -v option. - -Likewise, on machine B: - - $ ping 10.10.10.1 - -This now uses a carrier sense MAC, so you should be able to ssh -between the machines, web browse, etc. diff --git a/gnuradio-examples/python/gmsk2/benchmark_gmsk_rx.py b/gnuradio-examples/python/gmsk2/benchmark_gmsk_rx.py deleted file mode 100755 index f511e334c..000000000 --- a/gnuradio-examples/python/gmsk2/benchmark_gmsk_rx.py +++ /dev/null @@ -1,128 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gru, blks -from gnuradio import usrp -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -import random -import struct - -# from current dir -from receive_path import receive_path -import fusb_options - -#import os -#print os.getpid() -#raw_input('Attach and press enter') - - -class my_graph(gr.flow_graph): - - def __init__(self, demod_class, rx_subdev_spec, - bitrate, decim_rate, spb, - rx_callback, options, demod_kwargs): - gr.flow_graph.__init__(self) - self.rxpath = receive_path(self, demod_class, rx_subdev_spec, - bitrate, decim_rate, spb, - rx_callback, options, demod_kwargs) - -# ///////////////////////////////////////////////////////////////////////////// -# main -# ///////////////////////////////////////////////////////////////////////////// - -global n_rcvd, n_right - -def main(): - global n_rcvd, n_right - - n_rcvd = 0 - n_right = 0 - - def rx_callback(ok, payload): - global n_rcvd, n_right - (pktno,) = struct.unpack('!H', payload[0:2]) - n_rcvd += 1 - if ok: - n_right += 1 - - print "ok = %r pktno = %4d n_rcvd = %4d n_right = %4d" % ( - ok, pktno, n_rcvd, n_right) - - parser = OptionParser (option_class=eng_option) - parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, - help="select USRP Rx side A or B") - parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, - help="set Rx frequency to FREQ [default=%default]", - metavar="FREQ") - parser.add_option("-r", "--bitrate", type="eng_float", default=None, - help="specify bitrate. spb and interp will be derived.") - parser.add_option("-g", "--rx-gain", type="eng_float", default=27, - help="set rx gain") - parser.add_option("-S", "--spb", type="int", default=None, - help="set samples/baud [default=%default]") - parser.add_option("-d", "--decim", type="intx", default=None, - help="set fpga decim rate to DECIM [default=%default]") - fusb_options.add_options(parser) - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help() - sys.exit(1) - - if options.freq < 1e6: - options.freq *= 1e6 - - demod_kwargs = { } # placeholder - - # build the graph - fg = my_graph(blks.gmsk2_demod, - options.rx_subdev_spec, options.bitrate, - options.decim, options.spb, rx_callback, - options, demod_kwargs) - - print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.rxpath.bitrate()),) - print "spb: %3d" % (fg.rxpath.spb(),) - print "decim: %3d" % (fg.rxpath.decim(),) - - ok = fg.rxpath.set_freq(options.freq) - if not ok: - print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(options.freq),) - raise SystemExit - - fg.rxpath.set_gain(options.rx_gain) - print "Rx gain_range: ", fg.rxpath.subdev.gain_range(), " using", fg.rxpath.gain - - r = gr.enable_realtime_scheduling() - if r != gr.RT_OK: - print "Warning: Failed to enable realtime scheduling." - - fg.start() # start flow graph - fg.wait() # wait for it to finish - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass diff --git a/gnuradio-examples/python/gmsk2/benchmark_gmsk_tx.py b/gnuradio-examples/python/gmsk2/benchmark_gmsk_tx.py deleted file mode 100755 index 36bced29b..000000000 --- a/gnuradio-examples/python/gmsk2/benchmark_gmsk_tx.py +++ /dev/null @@ -1,146 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005,2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gru, blks -from gnuradio import usrp -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -import random -import time -import struct -import sys - -# from current dir -from transmit_path import transmit_path -import fusb_options - -#import os -#print os.getpid() -#raw_input('Attach and press enter') - - -class my_graph(gr.flow_graph): - - def __init__(self, mod_class, tx_subdev_spec, - bitrate, interp_rate, spb, gain, - options, mod_kwargs): - gr.flow_graph.__init__(self) - self.txpath = transmit_path(self, mod_class, tx_subdev_spec, - bitrate, interp_rate, spb, gain, - options, mod_kwargs) - - -# ///////////////////////////////////////////////////////////////////////////// -# main -# ///////////////////////////////////////////////////////////////////////////// - -def main(): - - def send_pkt(payload='', eof=False): - return fg.txpath.send_pkt(payload, eof) - - def rx_callback(ok, payload): - print "ok = %r, payload = '%s'" % (ok, payload) - - parser = OptionParser (option_class=eng_option) - parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=None, - help="select USRP Tx side A or B") - parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, - help="set Tx and Rx frequency to FREQ [default=%default]", - metavar="FREQ") - parser.add_option("-r", "--bitrate", type="eng_float", default=None, - help="specify bitrate. spb and interp will be derived.") - parser.add_option("-S", "--spb", type="int", default=None, - help="set samples/baud [default=%default]") - parser.add_option("-i", "--interp", type="intx", default=None, - help="set fpga interpolation rate to INTERP [default=%default]") - parser.add_option("-s", "--size", type="eng_float", default=1500, - help="set packet size [default=%default]") - parser.add_option("", "--bt", type="float", default=0.3, - help="set bandwidth-time product [default=%default]") - parser.add_option("-g", "--gain", type="eng_float", default=100.0, - help="transmitter gain [default=%default]") - parser.add_option("-M", "--megabytes", type="eng_float", default=1.0, - help="set megabytes to transmit [default=%default]") - parser.add_option("","--discontinuous", action="store_true", default=False, - help="enable discontinous transmission (bursts of 5 packets)") - fusb_options.add_options(parser) - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help() - sys.exit(1) - - if options.freq < 1e6: - options.freq *= 1e6 - - pkt_size = int(options.size) - - mod_kwargs = { - 'bt' : options.bt, - } - - # build the graph - fg = my_graph(blks.gmsk2_mod, options.tx_subdev_spec, - options.bitrate, options.interp, options.spb, options.gain, - options, mod_kwargs) - - print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.txpath.bitrate()),) - print "spb: %3d" % (fg.txpath.spb(),) - print "interp: %3d" % (fg.txpath.interp(),) - - ok = fg.txpath.set_freq(options.freq) - if not ok: - print "Failed to set Tx frequency to %s" % (eng_notation.num_to_str(options.freq),) - raise SystemExit - - r = gr.enable_realtime_scheduling() - if r != gr.RT_OK: - print "Warning: failed to enable realtime scheduling" - - fg.start() # start flow graph - - # generate and send packets - nbytes = int(1e6 * options.megabytes) - n = 0 - pktno = 0 - - while n < nbytes: - send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) - n += pkt_size - sys.stderr.write('.') - if options.discontinuous and pktno % 5 == 4: - time.sleep(1) - pktno += 1 - - send_pkt(eof=True) - fg.wait() # wait for it to finish - fg.txpath.set_auto_tr(False) - - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass diff --git a/gnuradio-examples/python/gmsk2/benchmark_mpsk_rx.py b/gnuradio-examples/python/gmsk2/benchmark_mpsk_rx.py deleted file mode 100755 index 9bb70106f..000000000 --- a/gnuradio-examples/python/gmsk2/benchmark_mpsk_rx.py +++ /dev/null @@ -1,149 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gru, blks -from gnuradio import usrp -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -import random -import struct - -# from current dir -from bpsk import bpsk_demod -from dbpsk import dbpsk_demod -from dqpsk import dqpsk_demod -from receive_path import receive_path -import fusb_options - -if 1: - import os - print os.getpid() - raw_input('Attach and press enter') - - -class my_graph(gr.flow_graph): - - def __init__(self, demod_class, rx_subdev_spec, - bitrate, decim_rate, spb, - rx_callback, options, demod_kwargs): - gr.flow_graph.__init__(self) - self.rxpath = receive_path(self, demod_class, rx_subdev_spec, - bitrate, decim_rate, spb, - rx_callback, options, demod_kwargs) - -# ///////////////////////////////////////////////////////////////////////////// -# main -# ///////////////////////////////////////////////////////////////////////////// - -global n_rcvd, n_right - -def main(): - global n_rcvd, n_right - - n_rcvd = 0 - n_right = 0 - - def rx_callback(ok, payload): - global n_rcvd, n_right - (pktno,) = struct.unpack('!H', payload[0:2]) - n_rcvd += 1 - if ok: - n_right += 1 - - print "ok = %r pktno = %4d n_rcvd = %4d n_right = %4d" % ( - ok, pktno, n_rcvd, n_right) - - parser = OptionParser (option_class=eng_option) - parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, - help="select USRP Rx side A or B") - parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, - help="set Rx frequency to FREQ [default=%default]", - metavar="FREQ") - parser.add_option("-r", "--bitrate", type="eng_float", default=None, - help="specify bitrate. spb and interp will be derived.") - parser.add_option("-S", "--spb", type="int", default=None, - help="set samples/baud [default=%default]") - parser.add_option("-d", "--decim", type="intx", default=None, - help="set fpga decim rate to DECIM [default=%default]") - parser.add_option("-m", "--modulation", type="string", default='dbpsk', - help="modulation type (bpsk, dbpsk, dqpsk) [default=%default]") - parser.add_option("", "--excess-bw", type="float", default=0.3, - help="set RRC excess bandwith factor [default=%default]") - parser.add_option("-g", "--gain", type="eng_float", default=27, - help="set rx gain") - parser.add_option("","--log", action="store_true", default=False, - help="enable diagnostic logging") - fusb_options.add_options(parser) - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help() - sys.exit(1) - - if options.freq < 1e6: - options.freq *= 1e6 - - demod_kwargs = { - 'excess_bw' : options.excess_bw, - } - - #FIXME: Needs to be worked in to overall structure; this will be fixed - # once static class definitions for modulations are defined - if(options.modulation=='bpsk'): - modulation=bpsk_demod - elif(options.modulation=='dbpsk'): - modulation=dbpsk_demod - else: - modulation=dqpsk_demod - - # build the graph - fg = my_graph(modulation, - options.rx_subdev_spec, options.bitrate, - options.decim, options.spb, - rx_callback, options, demod_kwargs) - - print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.rxpath.bitrate()),) - print "spb: %3d" % (fg.rxpath.spb(),) - print "decim: %3d" % (fg.rxpath.decim(),) - - ok = fg.rxpath.set_freq(options.freq) - if not ok: - print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(options.freq),) - raise SystemExit - - fg.rxpath.set_gain(options.gain) - print "Rx gain_range: ", fg.rxpath.subdev.gain_range(), " using", fg.rxpath.gain - - r = gr.enable_realtime_scheduling() - if r != gr.RT_OK: - print "Warning: Failed to enable realtime scheduling." - - fg.start() # start flow graph - fg.wait() # wait for it to finish - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass diff --git a/gnuradio-examples/python/gmsk2/benchmark_mpsk_tx.py b/gnuradio-examples/python/gmsk2/benchmark_mpsk_tx.py deleted file mode 100755 index 2808f1d5c..000000000 --- a/gnuradio-examples/python/gmsk2/benchmark_mpsk_tx.py +++ /dev/null @@ -1,157 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005, 2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gru, blks -from gnuradio import usrp -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -import random, time, struct, sys - -# from current dir -from bpsk import bpsk_mod -from dbpsk import dbpsk_mod -from dqpsk import dqpsk_mod -from transmit_path import transmit_path -import fusb_options - -#import os -#print os.getpid() -#raw_input('Attach and press enter') - - -class my_graph(gr.flow_graph): - - def __init__(self, mod_class, tx_subdev_spec, - bitrate, interp_rate, spb, gain, - options, mod_kwargs): - gr.flow_graph.__init__(self) - self.txpath = transmit_path(self, mod_class, tx_subdev_spec, - bitrate, interp_rate, spb, gain, - options, mod_kwargs) - - -# ///////////////////////////////////////////////////////////////////////////// -# main -# ///////////////////////////////////////////////////////////////////////////// - -def main(): - - def send_pkt(payload='', eof=False): - return fg.txpath.send_pkt(payload, eof) - - def rx_callback(ok, payload): - print "ok = %r, payload = '%s'" % (ok, payload) - - parser = OptionParser (option_class=eng_option) - parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=None, - help="select USRP Tx side A or B") - parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, - help="set Tx and Rx frequency to FREQ [default=%default]", - metavar="FREQ") - parser.add_option("-r", "--bitrate", type="eng_float", default=None, - help="specify bitrate. spb and interp will be derived.") - parser.add_option("-S", "--spb", type="int", default=None, - help="set samples/baud [default=%default]") - parser.add_option("-i", "--interp", type="intx", default=None, - help="set fpga interpolation rate to INTERP [default=%default]") - parser.add_option("-s", "--size", type="eng_float", default=1500, - help="set packet size [default=%default]") - parser.add_option("-m", "--modulation", type="string", default='dbpsk', - help="modulation type (bpsk, dbpsk, dqpsk) [default=%default]") - parser.add_option("", "--excess-bw", type="float", default=0.3, - help="set RRC excess bandwith factor [default=%default]") - parser.add_option("-g", "--gain", type="eng_float", default=100.0, - help="transmitter gain [default=%default]") - parser.add_option("-M", "--megabytes", type="eng_float", default=1.0, - help="set megabytes to transmit [default=%default]") - parser.add_option("","--discontinuous", action="store_true", default=False, - help="enable discontinous transmission (bursts of 5 packets)") - fusb_options.add_options(parser) - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help() - sys.exit(1) - - if options.freq < 1e6: - options.freq *= 1e6 - - pkt_size = int(options.size) - - mod_kwargs = { - 'excess_bw' : options.excess_bw, - } - - #FIXME: rework when static class defintions are ready for the modulation types - if(options.modulation=='bpsk'): - modulation=bpsk_mod - elif( options.modulation=='dbpsk'): - modulation=dbpsk_mod - else: - modulation=dqpsk_mod - - # build the graph - fg = my_graph(modulation, - options.tx_subdev_spec, options.bitrate, options.interp, - options.spb, options.gain, - options, mod_kwargs) - - print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.txpath.bitrate()),) - print "spb: %3d" % (fg.txpath.spb(),) - print "interp: %3d" % (fg.txpath.interp(),) - - ok = fg.txpath.set_freq(options.freq) - if not ok: - print "Failed to set Tx frequency to %s" % (eng_notation.num_to_str(options.freq),) - raise SystemExit - - r = gr.enable_realtime_scheduling() - if r != gr.RT_OK: - print "Warning: failed to enable realtime scheduling" - - fg.start() # start flow graph - - # generate and send packets - nbytes = int(1e6 * options.megabytes) - n = 0 - pktno = 0 - - while n < nbytes: - send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) - n += pkt_size - sys.stderr.write('.') - if options.discontinuous and pktno % 5 == 4: - time.sleep(1) - pktno += 1 - - send_pkt(eof=True) - fg.wait() # wait for it to finish - fg.txpath.set_auto_tr(False) - - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass diff --git a/gnuradio-examples/python/gmsk2/bpsk.py b/gnuradio-examples/python/gmsk2/bpsk.py deleted file mode 100644 index dcf8a10b6..000000000 --- a/gnuradio-examples/python/gmsk2/bpsk.py +++ /dev/null @@ -1,256 +0,0 @@ -# -# Copyright 2005,2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -# See gnuradio-examples/python/gmsk2 for examples - -""" -BPSK modulation and demodulation. -""" - -from gnuradio import gr, gru -from math import pi, sqrt -import cmath -import Numeric -from pprint import pprint - -_use_gray_code = True - -def make_constellation(m): - return [cmath.exp(i * 2 * pi / m * 1j) for i in range(m)] - -# Common definition of constellations for Tx and Rx -constellation = { - 2 : make_constellation(2), # BPSK - 4 : make_constellation(4), # QPSK - 8 : make_constellation(8) # 8PSK - } - -if 0: - print "const(2) =" - pprint(constellation[2]) - print "const(4) =" - pprint(constellation[4]) - print "const(8) =" - pprint(constellation[8]) - - -if _use_gray_code: - # ----------------------- - # Do Gray code - # ----------------------- - # binary to gray coding - binary_to_gray = { - 2 : (0, 1), - 4 : (0, 1, 3, 2), - 8 : (0, 1, 3, 2, 7, 6, 4, 5) - } - - # gray to binary - gray_to_binary = { - 2 : (0, 1), - 4 : (0, 1, 3, 2), - 8 : (0, 1, 3, 2, 6, 7, 5, 4) - } -else: - # ----------------------- - # Don't Gray code - # ----------------------- - # identity mapping - binary_to_gray = { - 2 : (0, 1), - 4 : (0, 1, 2, 3), - 8 : (0, 1, 2, 3, 4, 5, 6, 7) - } - - # identity mapping - gray_to_binary = { - 2 : (0, 1), - 4 : (0, 1, 2, 3), - 8 : (0, 1, 2, 3, 4, 5, 6, 7) - } - - -# ///////////////////////////////////////////////////////////////////////////// -# mPSK mod/demod with steams of bytes as data i/o -# ///////////////////////////////////////////////////////////////////////////// - - -class bpsk_mod(gr.hier_block): - - def __init__(self, fg, spb, excess_bw): - """ - Hierarchical block for RRC-filtered BPSK modulation. - - The input is a byte stream (unsigned char) and the - output is the complex modulated signal at baseband. - - @param fg: flow graph - @type fg: flow graph - @param spb: samples per baud >= 2 - @type spb: integer - @param excess_bw: Root-raised cosine filter excess bandwidth - @type excess_bw: float - """ - if not isinstance(spb, int) or spb < 2: - raise TypeError, "sbp must be an integer >= 2" - self.spb = spb - - ntaps = 11 * spb - - bits_per_symbol = self.bits_per_baud() - arity = pow(2,bits_per_symbol) - print "bits_per_symbol =", bits_per_symbol - - # turn bytes into k-bit vectors - self.bytes2chunks = \ - gr.packed_to_unpacked_bb(bits_per_symbol, gr.GR_MSB_FIRST) - - self.chunks2symbols = gr.chunks_to_symbols_bc(constellation[arity]) - - # pulse shaping filter - self.rrc_taps = gr.firdes.root_raised_cosine( - spb, # gain (spb since we're interpolating by spb) - spb, # sampling rate - 1.0, # symbol rate - excess_bw, # excess bandwidth (roll-off factor) - ntaps) - - self.rrc_filter = gr.interp_fir_filter_ccf(spb, self.rrc_taps) - - # Connect - fg.connect(self.bytes2chunks, self.chunks2symbols, self.rrc_filter) - - if 1: - fg.connect(self.rrc_filter, - gr.file_sink(gr.sizeof_gr_complex, "rrc.dat")) - - # Initialize base class - gr.hier_block.__init__(self, fg, self.bytes2chunks, self.rrc_filter) - - def samples_per_baud(self): - return self.spb - - def bits_per_baud(self=None): # staticmethod that's also callable on an instance - return 1 - bits_per_baud = staticmethod(bits_per_baud) # make it a static method. RTFM - - -class bpsk_demod__coherent_detection_of_psk(gr.hier_block): - def __init__(self, fg, spb, excess_bw, costas_alpha=0.005, gain_mu=0.05): - """ - Hierarchical block for RRC-filtered BPSK demodulation - - The input is the complex modulated signal at baseband. - The output is a stream of bits packed 1 bit per byte (LSB) - - @param fg: flow graph - @type fg: flow graph - @param spb: samples per baud >= 2 - @type spb: float - @param excess_bw: Root-raised cosine filter excess bandwidth - @type excess_bw: float - @param costas_alpha: loop filter gain - @type costas_alphas: float - @param gain_mu: - @type gain_mu: float - """ - if spb < 2: - raise TypeError, "sbp must be >= 2" - self.spb = spb - - bits_per_symbol = self.bits_per_baud() - arity = pow(2,bits_per_symbol) - print "bits_per_symbol =", bits_per_symbol - - # Automatic gain control - self.preamp = gr.multiply_const_cc(10e-5) - self.agc = gr.agc_cc(1e-3, 1, 1) - - # Costas loop (carrier tracking) - # FIXME: need to decide how to handle this more generally; do we pull it from higher layer? - costas_order = 2 - costas_alpha *= 15 # 2nd order loop needs more gain - beta = .25 * costas_alpha * costas_alpha - self.costas_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, costas_order) - - # RRC data filter - ntaps = 11 * spb - self.rrc_taps = gr.firdes.root_raised_cosine( - 1.0, # gain - spb, # sampling rate - 1.0, # symbol rate - excess_bw, # excess bandwidth (roll-off factor) - ntaps) - - self.rrc_filter=gr.fir_filter_ccf(1, self.rrc_taps) - - # symbol clock recovery - omega = spb - gain_omega = .25 * gain_mu * gain_mu - omega_rel_limit = 0.5 - mu = 0.05 - gain_mu = 0.1 - self.clock_recovery=gr.clock_recovery_mm_cc(omega, gain_omega, - mu, gain_mu, omega_rel_limit) - - # find closest constellation point - #rot = .707 + .707j - rot = 1 - rotated_const = map(lambda pt: pt * rot, constellation[arity]) - print "rotated_const =", rotated_const - - self.slicer = gr.constellation_decoder_cb(rotated_const, range(arity)) - self.gray_decoder = gr.map_bb(gray_to_binary[arity]) - - # unpack the k bit vector into a stream of bits - self.unpack = gr.unpack_k_bits_bb(bits_per_symbol) - - fg.connect(self.preamp, self.agc, self.costas_loop, self.rrc_filter, self.clock_recovery, - self.slicer, self.gray_decoder, self.unpack) - - # Debug sinks - if 1: - fg.connect(self.agc, - gr.file_sink(gr.sizeof_gr_complex, "agc.dat")) - fg.connect(self.costas_loop, - gr.file_sink(gr.sizeof_gr_complex, "costas_loop.dat")) - fg.connect(self.rrc_filter, - gr.file_sink(gr.sizeof_gr_complex, "rrc.dat")) - fg.connect(self.clock_recovery, - gr.file_sink(gr.sizeof_gr_complex, "clock_recovery.dat")) - fg.connect(self.slicer, - gr.file_sink(gr.sizeof_char, "slicer.dat")) - fg.connect(self.unpack, - gr.file_sink(gr.sizeof_char, "unpack.dat")) - - # Initialize base class - gr.hier_block.__init__(self, fg, self.preamp, self.unpack) - - def samples_per_baud(self): - return self.spb - - def bits_per_baud(self=None): # staticmethod that's also callable on an instance - return 1 - bits_per_baud = staticmethod(bits_per_baud) # make it a static method. RTFM - - -bpsk_demod = bpsk_demod__coherent_detection_of_psk - diff --git a/gnuradio-examples/python/gmsk2/dbpsk.py b/gnuradio-examples/python/gmsk2/dbpsk.py deleted file mode 100644 index 7d2765df4..000000000 --- a/gnuradio-examples/python/gmsk2/dbpsk.py +++ /dev/null @@ -1,282 +0,0 @@ -# -# Copyright 2005,2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -# See gnuradio-examples/python/gmsk2 for examples - -""" -differential BPSK modulation and demodulation. -""" - -from gnuradio import gr, gru -from math import pi, sqrt -import cmath -import Numeric -from pprint import pprint - -_use_gray_code = True - -def make_constellation(m): - return [cmath.exp(i * 2 * pi / m * 1j) for i in range(m)] - -# Common definition of constellations for Tx and Rx -constellation = { - 2 : make_constellation(2), # BPSK - 4 : make_constellation(4), # QPSK - 8 : make_constellation(8) # 8PSK - } - -if 0: - print "const(2) =" - pprint(constellation[2]) - print "const(4) =" - pprint(constellation[4]) - print "const(8) =" - pprint(constellation[8]) - - -if _use_gray_code: - # ----------------------- - # Do Gray code - # ----------------------- - # binary to gray coding - binary_to_gray = { - 2 : (0, 1), - 4 : (0, 1, 3, 2), - 8 : (0, 1, 3, 2, 7, 6, 4, 5) - } - - # gray to binary - gray_to_binary = { - 2 : (0, 1), - 4 : (0, 1, 3, 2), - 8 : (0, 1, 3, 2, 6, 7, 5, 4) - } -else: - # ----------------------- - # Don't Gray code - # ----------------------- - # identity mapping - binary_to_gray = { - 2 : (0, 1), - 4 : (0, 1, 2, 3), - 8 : (0, 1, 2, 3, 4, 5, 6, 7) - } - - # identity mapping - gray_to_binary = { - 2 : (0, 1), - 4 : (0, 1, 2, 3), - 8 : (0, 1, 2, 3, 4, 5, 6, 7) - } - - -# ///////////////////////////////////////////////////////////////////////////// -# BPSK mod/demod with steams of bytes as data i/o -# ///////////////////////////////////////////////////////////////////////////// - - -class dbpsk_mod(gr.hier_block): - - def __init__(self, fg, spb, excess_bw): - """ - Hierarchical block for RRC-filtered QPSK modulation. - - The input is a byte stream (unsigned char) and the - output is the complex modulated signal at baseband. - - @param fg: flow graph - @type fg: flow graph - @param spb: samples per baud >= 2 - @type spb: integer - @param excess_bw: Root-raised cosine filter excess bandwidth - @type excess_bw: float - """ - if not isinstance(spb, int) or spb < 2: - raise TypeError, "sbp must be an integer >= 2" - self.spb = spb - - ntaps = 11 * spb - - bits_per_symbol = self.bits_per_baud() - arity = pow(2,bits_per_symbol) - self.bits_per_symbol = bits_per_symbol - print "bits_per_symbol =", bits_per_symbol - - # turn bytes into k-bit vectors - self.bytes2chunks = \ - gr.packed_to_unpacked_bb(bits_per_symbol, gr.GR_MSB_FIRST) - - if True: - self.gray_coder = gr.map_bb(binary_to_gray[arity]) - else: - self.gray_coder = None - - self.diffenc = gr.diff_encoder_bb(arity) - - self.chunks2symbols = gr.chunks_to_symbols_bc(constellation[arity]) - - # pulse shaping filter - self.rrc_taps = gr.firdes.root_raised_cosine( - spb, # gain (spb since we're interpolating by spb) - spb, # sampling rate - 1.0, # symbol rate - excess_bw, # excess bandwidth (roll-off factor) - ntaps) - - self.rrc_filter = gr.interp_fir_filter_ccf(spb, self.rrc_taps) - - # Connect - if self.gray_coder: - fg.connect(self.bytes2chunks, self.gray_coder) - t = self.gray_coder - else: - t = self.bytes2chunks - - fg.connect(t, self.diffenc, self.chunks2symbols, self.rrc_filter) - - if 1: - fg.connect(self.gray_coder, - gr.file_sink(gr.sizeof_char, "graycoder.dat")) - fg.connect(self.diffenc, - gr.file_sink(gr.sizeof_char, "diffenc.dat")) - - # Initialize base class - gr.hier_block.__init__(self, fg, self.bytes2chunks, self.rrc_filter) - - def samples_per_baud(self): - return self.spb - - def bits_per_baud(self=None): # staticmethod that's also callable on an instance - return 1 - bits_per_baud = staticmethod(bits_per_baud) # make it a static method. RTFM - - - -class dbpsk_demod__coherent_detection_of_differentially_encoded_psk(gr.hier_block): - def __init__(self, fg, spb, excess_bw, costas_alpha=0.005, gain_mu=0.05): - """ - Hierarchical block for RRC-filtered BPSK demodulation - - The input is the complex modulated signal at baseband. - The output is a stream of bits packed 1 bit per byte (LSB) - - @param fg: flow graph - @type fg: flow graph - @param spb: samples per baud >= 2 - @type spb: float - @param excess_bw: Root-raised cosine filter excess bandwidth - @type excess_bw: float - @param costas_alpha: loop filter gain - @type costas_alphas: float - @param gain_mu: - @type gain_mu: float - """ - if spb < 2: - raise TypeError, "sbp must be >= 2" - self.spb = spb - - bits_per_symbol = self.bits_per_baud() - arity = pow(2,bits_per_symbol) - print "bits_per_symbol =", bits_per_symbol - - # Automatic gain control - self.preamp = gr.multiply_const_cc(10e-5) - self.agc = gr.agc_cc(1e-3, 1, 1, 1000) - - # Costas loop (carrier tracking) - # FIXME: need to decide how to handle this more generally; do we pull it from higher layer? - costas_order = 2 - costas_alpha *= 15 # 2nd order loop needs more gain - beta = .25 * costas_alpha * costas_alpha - self.costas_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, costas_order) - - # RRC data filter - ntaps = 11 * spb - self.rrc_taps = gr.firdes.root_raised_cosine( - 1.0, # gain - spb, # sampling rate - 1.0, # symbol rate - excess_bw, # excess bandwidth (roll-off factor) - ntaps) - - self.rrc_filter=gr.fir_filter_ccf(1, self.rrc_taps) - - # symbol clock recovery - omega = spb - gain_omega = .25 * gain_mu * gain_mu - omega_rel_limit = 0.5 - mu = 0.05 - gain_mu = 0.1 - self.clock_recovery=gr.clock_recovery_mm_cc(omega, gain_omega, - mu, gain_mu, omega_rel_limit) - - # find closest constellation point - #rot = .707 + .707j - rot = 1 - rotated_const = map(lambda pt: pt * rot, constellation[arity]) - print "rotated_const =", rotated_const - - self.diffdec = gr.diff_phasor_cc() - #self.diffdec = gr.diff_decoder_bb(arity) - - self.slicer = gr.constellation_decoder_cb(rotated_const, range(arity)) - self.gray_decoder = gr.map_bb(gray_to_binary[arity]) - - # unpack the k bit vector into a stream of bits - self.unpack = gr.unpack_k_bits_bb(bits_per_symbol) - - fg.connect(self.preamp, self.agc, self.costas_loop, self.rrc_filter, self.clock_recovery, - self.diffdec, self.slicer, self.gray_decoder, self.unpack) - #fg.connect(self.preamp, self.agc, self.costas_loop, self.rrc_filter, self.clock_recovery, - # self.slicer, self.diffdec, self.gray_decoder, self.unpack) - - # Debug sinks - if 1: - fg.connect(self.agc, - gr.file_sink(gr.sizeof_gr_complex, "agc.dat")) - fg.connect(self.costas_loop, - gr.file_sink(gr.sizeof_gr_complex, "costas_loop.dat")) - fg.connect(self.rrc_filter, - gr.file_sink(gr.sizeof_gr_complex, "rrc.dat")) - fg.connect(self.clock_recovery, - gr.file_sink(gr.sizeof_gr_complex, "clock_recovery.dat")) - fg.connect(self.slicer, - gr.file_sink(gr.sizeof_char, "slicer.dat")) - fg.connect(self.diffdec, - gr.file_sink(gr.sizeof_gr_complex, "diffdec.dat")) - #fg.connect(self.diffdec, - # gr.file_sink(gr.sizeof_char, "diffdec.dat")) - fg.connect(self.unpack, - gr.file_sink(gr.sizeof_char, "unpack.dat")) - - # Initialize base class - gr.hier_block.__init__(self, fg, self.preamp, self.unpack) - - def samples_per_baud(self): - return self.spb - - def bits_per_baud(self=None): # staticmethod that's also callable on an instance - return 1 - bits_per_baud = staticmethod(bits_per_baud) # make it a static method. RTFM - - -dbpsk_demod = dbpsk_demod__coherent_detection_of_differentially_encoded_psk - diff --git a/gnuradio-examples/python/gmsk2/dqpsk.py b/gnuradio-examples/python/gmsk2/dqpsk.py deleted file mode 100644 index a18f28b75..000000000 --- a/gnuradio-examples/python/gmsk2/dqpsk.py +++ /dev/null @@ -1,280 +0,0 @@ -# -# Copyright 2005,2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -# See gnuradio-examples/python/gmsk2 for examples - -""" -differential QPSK modulation and demodulation. -""" - -from gnuradio import gr, gru -from math import pi, sqrt -import cmath -import Numeric -from pprint import pprint - -_use_gray_code = True - -def make_constellation(m): - return [cmath.exp(i * 2 * pi / m * 1j) for i in range(m)] - -# Common definition of constellations for Tx and Rx -constellation = { - 2 : make_constellation(2), # BPSK - 4 : make_constellation(4), # QPSK - 8 : make_constellation(8) # 8PSK - } - -if 0: - print "const(2) =" - pprint(constellation[2]) - print "const(4) =" - pprint(constellation[4]) - print "const(8) =" - pprint(constellation[8]) - - -if _use_gray_code: - # ----------------------- - # Do Gray code - # ----------------------- - # binary to gray coding - binary_to_gray = { - 2 : (0, 1), - 4 : (0, 1, 3, 2), - 8 : (0, 1, 3, 2, 7, 6, 4, 5) - } - - # gray to binary - gray_to_binary = { - 2 : (0, 1), - 4 : (0, 1, 3, 2), - 8 : (0, 1, 3, 2, 6, 7, 5, 4) - } -else: - # ----------------------- - # Don't Gray code - # ----------------------- - # identity mapping - binary_to_gray = { - 2 : (0, 1), - 4 : (0, 1, 2, 3), - 8 : (0, 1, 2, 3, 4, 5, 6, 7) - } - - # identity mapping - gray_to_binary = { - 2 : (0, 1), - 4 : (0, 1, 2, 3), - 8 : (0, 1, 2, 3, 4, 5, 6, 7) - } - - -# ///////////////////////////////////////////////////////////////////////////// -# QPSK mod/demod with steams of bytes as data i/o -# ///////////////////////////////////////////////////////////////////////////// - - -class dqpsk_mod(gr.hier_block): - - def __init__(self, fg, spb, excess_bw): - """ - Hierarchical block for RRC-filtered QPSK modulation. - - The input is a byte stream (unsigned char) and the - output is the complex modulated signal at baseband. - - @param fg: flow graph - @type fg: flow graph - @param spb: samples per baud >= 2 - @type spb: integer - @param excess_bw: Root-raised cosine filter excess bandwidth - @type excess_bw: float - """ - if not isinstance(spb, int) or spb < 2: - raise TypeError, "sbp must be an integer >= 2" - self.spb = spb - - ntaps = 11 * spb - - bits_per_symbol = self.bits_per_baud() - arity = pow(2,bits_per_symbol) - print "bits_per_symbol =", bits_per_symbol - - # turn bytes into k-bit vectors - self.bytes2chunks = \ - gr.packed_to_unpacked_bb(bits_per_symbol, gr.GR_MSB_FIRST) - - if True: - self.gray_coder = gr.map_bb(binary_to_gray[arity]) - else: - self.gray_coder = None - - self.diffenc = gr.diff_encoder_bb(arity) - - self.chunks2symbols = gr.chunks_to_symbols_bc(constellation[arity]) - - # pulse shaping filter - self.rrc_taps = gr.firdes.root_raised_cosine( - spb, # gain (spb since we're interpolating by spb) - spb, # sampling rate - 1.0, # symbol rate - excess_bw, # excess bandwidth (roll-off factor) - ntaps) - - self.rrc_filter = gr.interp_fir_filter_ccf(spb, self.rrc_taps) - - # Connect - if self.gray_coder: - fg.connect(self.bytes2chunks, self.gray_coder) - t = self.gray_coder - else: - t = self.bytes2chunks - - fg.connect(t, self.diffenc, self.chunks2symbols, self.rrc_filter) - - if 1: - fg.connect(self.gray_coder, - gr.file_sink(gr.sizeof_char, "graycoder.dat")) - fg.connect(self.diffenc, - gr.file_sink(gr.sizeof_char, "diffenc.dat")) - - # Initialize base class - gr.hier_block.__init__(self, fg, self.bytes2chunks, self.rrc_filter) - - def samples_per_baud(self): - return self.spb - - def bits_per_baud(self=None): # staticmethod that's also callable on an instance - return 2 - bits_per_baud = staticmethod(bits_per_baud) # make it a static method. RTFM - - - -class dqpsk_demod__coherent_detection_of_differentially_encoded_psk(gr.hier_block): - def __init__(self, fg, spb, excess_bw, costas_alpha=0.005, gain_mu=0.05): - """ - Hierarchical block for RRC-filtered QPSK demodulation - - The input is the complex modulated signal at baseband. - The output is a stream of bits packed 1 bit per byte (LSB) - - @param fg: flow graph - @type fg: flow graph - @param spb: samples per baud >= 2 - @type spb: float - @param excess_bw: Root-raised cosine filter excess bandwidth - @type excess_bw: float - @param costas_alpha: loop filter gain - @type costas_alphas: float - @param gain_mu: - @type gain_mu: float - """ - if spb < 2: - raise TypeError, "sbp must be >= 2" - self.spb = spb - - bits_per_symbol = self.bits_per_baud() - arity = pow(2,bits_per_symbol) - print "bits_per_symbol =", bits_per_symbol - - # Automatic gain control - self.preamp = gr.multiply_const_cc(10e-5) - self.agc = gr.agc_cc(1e-3, 1, 1) - - # Costas loop (carrier tracking) - # FIXME: need to decide how to handle this more generally; do we pull it from higher layer? - costas_order = 4 - beta = .25 * costas_alpha * costas_alpha - self.costas_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, costas_order) - - # RRC data filter - ntaps = 11 * spb - self.rrc_taps = gr.firdes.root_raised_cosine( - 1.0, # gain - spb, # sampling rate - 1.0, # symbol rate - excess_bw, # excess bandwidth (roll-off factor) - ntaps) - - self.rrc_filter=gr.fir_filter_ccf(1, self.rrc_taps) - - # symbol clock recovery - omega = spb - gain_omega = .25 * gain_mu * gain_mu - omega_rel_limit = 0.5 - mu = 0.05 - gain_mu = 0.1 - self.clock_recovery=gr.clock_recovery_mm_cc(omega, gain_omega, - mu, gain_mu, omega_rel_limit) - - # find closest constellation point - #rot = .707 + .707j - rot = 1 - rotated_const = map(lambda pt: pt * rot, constellation[arity]) - print "rotated_const =", rotated_const - - self.diffdec = gr.diff_phasor_cc() - #self.diffdec = gr.diff_decoder_bb(arity) - - self.slicer = gr.constellation_decoder_cb(rotated_const, range(arity)) - self.gray_decoder = gr.map_bb(gray_to_binary[arity]) - - # unpack the k bit vector into a stream of bits - self.unpack = gr.unpack_k_bits_bb(bits_per_symbol) - - fg.connect(self.preamp, self.agc, self.costas_loop, self.rrc_filter, self.clock_recovery, - self.diffdec, self.slicer, self.gray_decoder, self.unpack) - #fg.connect(self.preamp, self.agc, self.costas_loop, self.rrc_filter, self.clock_recovery, - # self.slicer, self.diffdec, self.gray_decoder, self.unpack) - - # Debug sinks - if 1: - fg.connect(self.agc, - gr.file_sink(gr.sizeof_gr_complex, "agc.dat")) - fg.connect(self.costas_loop, - gr.file_sink(gr.sizeof_gr_complex, "costas_loop.dat")) - fg.connect(self.rrc_filter, - gr.file_sink(gr.sizeof_gr_complex, "rrc.dat")) - fg.connect(self.clock_recovery, - gr.file_sink(gr.sizeof_gr_complex, "clock_recovery.dat")) - fg.connect(self.slicer, - gr.file_sink(gr.sizeof_char, "slicer.dat")) - fg.connect(self.diffdec, - gr.file_sink(gr.sizeof_gr_complex, "diffdec.dat")) - #fg.connect(self.diffdec, - # gr.file_sink(gr.sizeof_char, "diffdec.dat")) - fg.connect(self.unpack, - gr.file_sink(gr.sizeof_char, "unpack.dat")) - - # Initialize base class - gr.hier_block.__init__(self, fg, self.preamp, self.unpack) - - def samples_per_baud(self): - return self.spb - - def bits_per_baud(self=None): # staticmethod that's also callable on an instance - return 2 - bits_per_baud = staticmethod(bits_per_baud) # make it a static method. RTFM - - -dqpsk_demod = dqpsk_demod__coherent_detection_of_differentially_encoded_psk - diff --git a/gnuradio-examples/python/gmsk2/fusb_options.py b/gnuradio-examples/python/gmsk2/fusb_options.py deleted file mode 100644 index cdb15d72b..000000000 --- a/gnuradio-examples/python/gmsk2/fusb_options.py +++ /dev/null @@ -1,31 +0,0 @@ -# -# Copyright 2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -def add_options(parser): - """ - Add Fast USB specifc options to command line parser. - - @param parser: instance of OptionParser - """ - parser.add_option("-B", "--fusb-block-size", type="int", default=0, - help="specify fast usb block size [default=%default]") - parser.add_option("-N", "--fusb-nblocks", type="int", default=0, - help="specify number of fast usb blocks [default=%default]") diff --git a/gnuradio-examples/python/gmsk2/gen_whitener.py b/gnuradio-examples/python/gmsk2/gen_whitener.py deleted file mode 100755 index 93aea2b82..000000000 --- a/gnuradio-examples/python/gmsk2/gen_whitener.py +++ /dev/null @@ -1,40 +0,0 @@ -#!/usr/bin/env python - -from gnuradio import gr, gru -from gnuradio.eng_option import eng_option -from optparse import OptionParser -import sys - -class my_graph(gr.flow_graph): - - def __init__(self): - gr.flow_graph.__init__(self) - - parser = OptionParser(option_class=eng_option) - (options, args) = parser.parse_args () - if len(args) != 0: - parser.print_help() - raise SystemExit, 1 - - src = gr.lfsr_32k_source_s() - head = gr.head(gr.sizeof_short, 2048) - self.dst = gr.vector_sink_s() - self.connect(src, head, self.dst) - -if __name__ == '__main__': - try: - fg = my_graph() - fg.run() - f = sys.stdout - i = 0 - for s in fg.dst.data(): - f.write("%3d, " % (s & 0xff,)) - f.write("%3d, " % ((s >> 8) & 0xff,)) - i = i+2 - if i % 16 == 0: - f.write('\n') - - except KeyboardInterrupt: - pass - - diff --git a/gnuradio-examples/python/gmsk2/gmsk_test.py b/gnuradio-examples/python/gmsk2/gmsk_test.py deleted file mode 100755 index 7ae69a0a9..000000000 --- a/gnuradio-examples/python/gmsk2/gmsk_test.py +++ /dev/null @@ -1,115 +0,0 @@ -#!/usr/bin/env python - -from gnuradio import gr, blks -from gnuradio.eng_option import eng_option -from optparse import OptionParser -import random -import struct - -#import os -#print os.getpid() -#raw_input('Attach and press enter') - - -class my_graph(gr.flow_graph): - - def __init__(self, rx_callback, spb, bt, SNR, freq_error): - gr.flow_graph.__init__(self) - - fg = self - - # Tuning Parameters - gain_mu = 0.002*spb - omega = spb*(1+freq_error) - - # transmitter - self.packet_transmitter = blks.gmsk2_mod_pkts(fg, spb=spb, bt=bt) - - # add some noise - add = gr.add_cc() - noise = gr.noise_source_c(gr.GR_GAUSSIAN, pow(10.0,-SNR/20.0)) - - # channel filter - rx_filt_taps = gr.firdes.low_pass(1,spb,0.8,0.1,gr.firdes.WIN_HANN) - rx_filt = gr.fir_filter_ccf(1,rx_filt_taps) - - # receiver - self.packet_receiver = blks.gmsk2_demod_pkts(fg, callback=rx_callback, - spb=spb, gain_mu=gain_mu, - freq_error=freq_error, omega=omega) - - fg.connect (self.packet_transmitter, (add,0)) - fg.connect (noise, (add,1)) - fg.connect(add, rx_filt, self.packet_receiver) - - -class stats(object): - def __init__(self): - self.npkts = 0 - self.nright = 0 - -def main(): - st = stats() - - def send_pkt(payload='', eof=False): - fg.packet_transmitter.send_pkt(payload, eof) - - def rx_callback(ok, payload): - st.npkts += 1 - if ok: - st.nright += 1 - if len(payload) <= 16: - print "ok = %5r payload = '%s' %d/%d" % (ok, payload, st.nright, st.npkts) - else: - (pktno,) = struct.unpack('!H', payload[0:2]) - print "ok = %5r pktno = %4d len(payload) = %4d %d/%d" % (ok, pktno, len(payload), - st.nright, st.npkts) - - - parser = OptionParser (option_class=eng_option) - parser.add_option("-M", "--megabytes", type="eng_float", default=1, - help="set megabytes to transmit [default=%default]") - parser.add_option("-s", "--size", type="eng_float", default=1500, - help="set packet size [default=%default]") - parser.add_option("","--spb", type=int, default=4, - help="set samples per baud to SPB [default=%default]") - parser.add_option("", "--bt", type="eng_float", default=0.3, - help="set bandwidth time product for Gaussian filter [default=%default]") - parser.add_option("", "--snr", type="eng_float", default=20, - help="set SNR in dB for simulation [default=%default]") - parser.add_option("", "--freq-error", type="eng_float", default=0, - help="set frequency error for simulation [default=%default]") - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help() - sys.exit(1) - - pkt_size = int(options.size) - - fg = my_graph(rx_callback, options.spb, options.bt, options.snr, options.freq_error) - fg.start() - - nbytes = int(1e6 * options.megabytes) - n = 0 - pktno = 0 - - send_pkt('Hello World') - - # generate and send packets - while n < nbytes: - send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) - n += pkt_size - pktno += 1 - - send_pkt('Goodbye World') - send_pkt(eof=True) # tell modulator we're not sending any more pkts - - fg.wait() - - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass diff --git a/gnuradio-examples/python/gmsk2/mpsk_test.py b/gnuradio-examples/python/gmsk2/mpsk_test.py deleted file mode 100755 index 1f257d9c5..000000000 --- a/gnuradio-examples/python/gmsk2/mpsk_test.py +++ /dev/null @@ -1,125 +0,0 @@ -#!/usr/bin/env python - -from gnuradio import gr, blks -from gnuradio.eng_option import eng_option -from optparse import OptionParser -import random -import struct -from mpsk_pkt import * -import cmath - -class my_graph(gr.flow_graph): - - def __init__(self, rx_callback, spb, excess_bw, SNR, freq_error, arity): - gr.flow_graph.__init__(self) - - fg = self - - # Tuning Parameters - gain_mu = 0.05/spb - - # transmitter - self.packet_transmitter = \ - mpsk_mod_pkts(fg, spb=spb, excess_bw=excess_bw, diff=True, arity=arity) - - # ---------------------------------------------------------------- - # Channel model - # ---------------------------------------------------------------- - - awgn = gr.noise_source_c(gr.GR_GAUSSIAN, pow(10.0,-SNR/20.0)) - add = gr.add_cc() # add some noise - fg.connect(awgn, (add,1)) - radians = 17*pi/180 - phase_rotate = gr.multiply_const_cc(cmath.exp(radians * 1j)) - - # ---------------------------------------------------------------- - - # channel filter - rx_filt_taps = gr.firdes.low_pass(1,spb,0.8,0.1,gr.firdes.WIN_HANN) - #rx_filt_taps = (1,) - rx_filt = gr.fir_filter_ccf(1,rx_filt_taps) - - # receiver - self.packet_receiver = \ - mpsk_demod_pkts(fg, callback=rx_callback, - excess_bw=excess_bw, arity=arity, diff=True, - costas_alpha=.005, gain_mu=gain_mu, spb=spb) - - fg.connect (self.packet_transmitter, (add,0)) - fg.connect(add, phase_rotate, rx_filt, self.packet_receiver) - - -class stats(object): - def __init__(self): - self.npkts = 0 - self.nright = 0 - -def main(): - st = stats() - - def send_pkt(payload='', eof=False): - fg.packet_transmitter.send_pkt(payload, eof) - - def rx_callback(ok, payload): - st.npkts += 1 - if ok: - st.nright += 1 - if len(payload) <= 16: - print "ok = %5r payload = '%s' %d/%d" % (ok, payload, st.nright, st.npkts) - else: - (pktno,) = struct.unpack('!H', payload[0:2]) - print "ok = %5r pktno = %4d len(payload) = %4d %d/%d" % (ok, pktno, len(payload), - st.nright, st.npkts) - - - parser = OptionParser (option_class=eng_option) - parser.add_option("-M", "--megabytes", type="eng_float", default=1, - help="set megabytes to transmit [default=%default]") - parser.add_option("-s", "--size", type="eng_float", default=1500, - help="set packet size [default=%default]") - parser.add_option("","--spb", type=int, default=4, - help="set samples per baud to SPB [default=%default]") - parser.add_option("", "--excess-bw", type="eng_float", default=0.4, - help="set excess bandwidth for RRC filter [default=%default]") - parser.add_option("", "--snr", type="eng_float", default=40, - help="set SNR in dB for simulation [default=%default]") - parser.add_option("", "--m-arity", type=int, default=4, - help="PSK arity [default=%default]") - parser.add_option("", "--freq-error", type="eng_float", default=0, - help="set frequency error for simulation [default=%default]") - - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help() - sys.exit(1) - - pkt_size = int(options.size) - - fg = my_graph(rx_callback, options.spb, options.excess_bw, options.snr, - options.freq_error, options.m_arity) - fg.start() - - nbytes = int(1e6 * options.megabytes) - n = 0 - pktno = 0 - - send_pkt('Hello World') - - # generate and send packets - while n < nbytes: - send_pkt(struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno & 0xff)) - n += pkt_size - pktno += 1 - - send_pkt('Goodbye World') - send_pkt(eof=True) # tell modulator we're not sending any more pkts - - fg.wait() - - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass diff --git a/gnuradio-examples/python/gmsk2/pick_bitrate.py b/gnuradio-examples/python/gmsk2/pick_bitrate.py deleted file mode 100644 index 35074f1dc..000000000 --- a/gnuradio-examples/python/gmsk2/pick_bitrate.py +++ /dev/null @@ -1,143 +0,0 @@ -# -# Copyright 2005 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -_default_bitrate = 500e3 - -_valid_spbs = (2,3,4,5,6,7) - -def _gen_tx_info(converter_rate): - results = [] - for spb in _valid_spbs: - for interp in range(16, 512 + 1, 4): - bitrate = converter_rate / interp / spb - results.append((bitrate, spb, interp)) - results.sort() - return results - -def _gen_rx_info(converter_rate): - results = [] - for spb in _valid_spbs: - for decim in range(8, 256 + 1, 2): - bitrate = converter_rate / decim / spb - results.append((bitrate, spb, decim)) - results.sort() - return results - -def _filter_info(info, samples_per_baud, xrate): - if samples_per_baud is not None: - info = [x for x in info if x[1] == samples_per_baud] - if xrate is not None: - info = [x for x in info if x[2] == xrate] - return info - -def _pick_best(target_bitrate, bits_per_symbol, info): - """ - @returns tuple (bitrate, samples_per_baud, interp_rate_or_decim_rate) - """ - if len(info) == 0: - raise RuntimeError, "info is zero length!" - - if target_bitrate is None: # return the fastest one - return info[-1] - - # convert bit rate to symbol rate - target_symbolrate = target_bitrate / bits_per_symbol - - # Find the closest matching symbol rate. - # In the event of a tie, the one with the lowest samples_per_baud wins. - # (We already sorted them, so the first one is the one we take) - - best = info[0] - best_delta = abs(target_symbolrate - best[0]) - for x in info[1:]: - delta = abs(target_symbolrate - x[0]) - if delta < best_delta: - best_delta = delta - best = x - - # convert symbol rate back to bit rate - return ((best[0] * bits_per_symbol),) + best[1:] - -def _pick_bitrate(bitrate, bits_per_symbol, samples_per_baud, - xrate, converter_rate, gen_info): - """ - @returns tuple (bitrate, samples_per_baud, interp_rate_or_decim_rate) - """ - if not isinstance(bits_per_symbol, int) or bits_per_symbol < 1: - raise ValueError, "bits_per_symbol must be an int >= 1" - - if samples_per_baud is not None and xrate is not None: # completely determined - return (float(converter_rate) / xrate / samples_per_baud, - samples_per_baud, xrate) - - if bitrate is None and samples_per_baud is None and xrate is None: - bitrate = _default_bitrate - - # now we have a target bitrate and possibly an xrate or - # samples_per_baud constraint, but not both of them. - - return _pick_best(bitrate, bits_per_symbol, - _filter_info(gen_info(converter_rate), samples_per_baud, xrate)) - -# --------------------------------------------------------------------------------------- - -def pick_tx_bitrate(bitrate, bits_per_symbol, samples_per_baud, - interp_rate, converter_rate=128e6): - """ - Given the 4 input parameters, return at configuration that matches - - @param bitrate: desired bitrate or None - @type bitrate: number or None - @param bits_per_symbol: E.g., BPSK -> 1, QPSK -> 2, 8-PSK -> 3 - @type bits_per_symbol: integer >= 1 - @param samples_per_baud: samples/baud (aka samples/symbol) - @type samples_per_baud: number or None - @param interp_rate: USRP interpolation factor - @type interp_rate: integer or None - @param converter_rate: converter sample rate in Hz - @type converter_rate: number - - @returns tuple (bitrate, samples_per_baud, interp_rate) - """ - return _pick_bitrate(bitrate, bits_per_symbol, samples_per_baud, - interp_rate, converter_rate, _gen_tx_info) - - -def pick_rx_bitrate(bitrate, bits_per_symbol, samples_per_baud, - decim_rate, converter_rate=64e6): - """ - Given the 4 input parameters, return at configuration that matches - - @param bitrate: desired bitrate or None - @type bitrate: number or None - @param bits_per_symbol: E.g., BPSK -> 1, QPSK -> 2, 8-PSK -> 3 - @type bits_per_symbol: integer >= 1 - @param samples_per_baud: samples/baud (aka samples/symbol) - @type samples_per_baud: number or None - @param decim_rate: USRP decimation factor - @type decim_rate: integer or None - @param converter_rate: converter sample rate in Hz - @type converter_rate: number - - @returns tuple (bitrate, samples_per_baud, decim_rate) - """ - return _pick_bitrate(bitrate, bits_per_symbol, samples_per_baud, - decim_rate, converter_rate, _gen_rx_info) diff --git a/gnuradio-examples/python/gmsk2/qpsk.py b/gnuradio-examples/python/gmsk2/qpsk.py deleted file mode 100644 index 26d95ed71..000000000 --- a/gnuradio-examples/python/gmsk2/qpsk.py +++ /dev/null @@ -1,418 +0,0 @@ -# -# Copyright 2005,2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -# See gnuradio-examples/python/gmsk2 for examples - -""" -PSK and differential PSK modulation and demodulation. -""" - -from gnuradio import gr, gru -from math import pi, sqrt -import cmath -import Numeric -from pprint import pprint - -_use_gray_code = True - -def make_constellation(m): - return [cmath.exp(i * 2 * pi / m * 1j) for i in range(m)] - -# Common definition of constellations for Tx and Rx -constellation = { - 2 : make_constellation(2), # BPSK - 4 : make_constellation(4), # QPSK - 8 : make_constellation(8) # 8PSK - } - -if 0: - print "const(2) =" - pprint(constellation[2]) - print "const(4) =" - pprint(constellation[4]) - print "const(8) =" - pprint(constellation[8]) - - -if _use_gray_code: - # ----------------------- - # Do Gray code - # ----------------------- - # binary to gray coding - binary_to_gray = { - 2 : (0, 1), - 4 : (0, 1, 3, 2), - 8 : (0, 1, 3, 2, 7, 6, 4, 5) - } - - # gray to binary - gray_to_binary = { - 2 : (0, 1), - 4 : (0, 1, 3, 2), - 8 : (0, 1, 3, 2, 6, 7, 5, 4) - } -else: - # ----------------------- - # Don't Gray code - # ----------------------- - # identity mapping - binary_to_gray = { - 2 : (0, 1), - 4 : (0, 1, 2, 3), - 8 : (0, 1, 2, 3, 4, 5, 6, 7) - } - - # identity mapping - gray_to_binary = { - 2 : (0, 1), - 4 : (0, 1, 2, 3), - 8 : (0, 1, 2, 3, 4, 5, 6, 7) - } - - -# ///////////////////////////////////////////////////////////////////////////// -# mPSK mod/demod with steams of bytes as data i/o -# ///////////////////////////////////////////////////////////////////////////// - - -class mpsk_mod(gr.hier_block): - - def __init__(self, fg, spb, arity, excess_bw, diff=False): - """ - Hierarchical block for RRC-filtered PSK modulation. - - The input is a byte stream (unsigned char) and the - output is the complex modulated signal at baseband. - - @param fg: flow graph - @type fg: flow graph - @param spb: samples per baud >= 2 - @type spb: integer - @param excess_bw: Root-raised cosine filter excess bandwidth - @type excess_bw: float - @param arity: whick PSK: 2, 4, 8 - @type arity: int in {2, 4, 8} - @param diff: differential PSK if true - @type diff: bool - """ - if not isinstance(spb, int) or spb < 2: - raise TypeError, "sbp must be an integer >= 2" - self.spb = spb - - if not arity in (2, 4): - raise ValueError, "n must be 2, 4, or 8" - - ntaps = 11 * spb - - bits_per_symbol = int(gru.log2(arity)) - self.bits_per_symbol = bits_per_symbol - print "bits_per_symbol =", bits_per_symbol - - # turn bytes into k-bit vectors - self.bytes2chunks = \ - gr.packed_to_unpacked_bb(bits_per_symbol, gr.GR_MSB_FIRST) - - if True or arity > 2: - self.gray_coder = gr.map_bb(binary_to_gray[arity]) - else: - self.gray_coder = None - - if diff: - self.diffenc = gr.diff_encoder_bb(arity) - else: - self.diffenc = None - - self.chunks2symbols = gr.chunks_to_symbols_bc(constellation[arity]) - - # pulse shaping filter - self.rrc_taps = gr.firdes.root_raised_cosine( - spb, # gain (spb since we're interpolating by spb) - spb, # sampling rate - 1.0, # symbol rate - excess_bw, # excess bandwidth (roll-off factor) - ntaps) - - self.rrc_filter = gr.interp_fir_filter_ccf(spb, self.rrc_taps) - - # Connect - if self.gray_coder: - fg.connect(self.bytes2chunks, self.gray_coder) - t = self.gray_coder - else: - t = self.bytes2chunks - - if diff: - fg.connect(t, self.diffenc, self.chunks2symbols, self.rrc_filter) - else: - fg.connect(t, self.chunks2symbols, self.rrc_filter) - - if 1: - fg.connect(self.gray_coder, - gr.file_sink(gr.sizeof_char, "graycoder.dat")) - if diff: - fg.connect(self.diffenc, - gr.file_sink(gr.sizeof_char, "diffenc.dat")) - - # Initialize base class - gr.hier_block.__init__(self, fg, self.bytes2chunks, self.rrc_filter) - - def samples_per_baud(self): - return self.spb - - def bits_per_baud(self): - return self.bits_per_symbol - - -class mpsk_demod__coherent_detection_of_differentially_encoded_psk(gr.hier_block): - def __init__(self, fg, spb, arity, excess_bw, diff=False, costas_alpha=0.005, gain_mu=0.05): - """ - Hierarchical block for RRC-filtered PSK demodulation - - The input is the complex modulated signal at baseband. - The output is a stream of bits packed 1 bit per byte (LSB) - - @param fg: flow graph - @type fg: flow graph - @param spb: samples per baud >= 2 - @type spb: float - @param excess_bw: Root-raised cosine filter excess bandwidth - @type excess_bw: float - @param arity: whick PSK: 2, 4, 8 - @type arity: int in {2, 4, 8} - @param diff: differential PSK if true - @type diff: bool - @param costas_alpha: loop filter gain - @type costas_alphas: float - @param gain_mu: - @type gain_mu: float - """ - if spb < 2: - raise TypeError, "sbp must be >= 2" - self.spb = spb - - if not arity in (2, 4): - raise ValueError, "n must be 2 or 4" - - if not diff and arity==4: - raise NotImplementedError, "non-differential QPSK not supported yet" - - bits_per_symbol = int(gru.log2(arity)) - print "bits_per_symbol =", bits_per_symbol - - # Automatic gain control - self.agc = gr.agc_cc(1e-3, 1, 1) - - # Costas loop (carrier tracking) - # FIXME: need to decide how to handle this more generally; do we pull it from higher layer? - if arity == 2: - costas_order = 2 - costas_alpha *= 15 # 2nd order loop needs more gain - else: - costas_order = 4 - beta = .25 * costas_alpha * costas_alpha - self.costas_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, costas_order) - - # RRC data filter - ntaps = 11 * spb - self.rrc_taps = gr.firdes.root_raised_cosine( - 1.0, # gain - spb, # sampling rate - 1.0, # symbol rate - excess_bw, # excess bandwidth (roll-off factor) - ntaps) - - self.rrc_filter=gr.fir_filter_ccf(1, self.rrc_taps) - - # symbol clock recovery - omega = spb - gain_omega = .25 * gain_mu * gain_mu - omega_rel_limit = 0.5 - mu = 0.05 - gain_mu = 0.1 - self.clock_recovery=gr.clock_recovery_mm_cc(omega, gain_omega, - mu, gain_mu, omega_rel_limit) - - # find closest constellation point - #rot = .707 + .707j - rot = 1 - rotated_const = map(lambda pt: pt * rot, constellation[arity]) - print "rotated_const =", rotated_const - - if(diff): - self.diffdec = gr.diff_phasor_cc() - #self.diffdec = gr.diff_decoder_bb(arity) - - self.slicer = gr.constellation_decoder_cb(rotated_const, range(arity)) - self.gray_decoder = gr.map_bb(gray_to_binary[arity]) - - # unpack the k bit vector into a stream of bits - self.unpack = gr.unpack_k_bits_bb(bits_per_symbol) - - if(diff): - fg.connect(self.agc, self.costas_loop, self.rrc_filter, self.clock_recovery, - self.diffdec, self.slicer, self.gray_decoder, self.unpack) - else: - fg.connect(self.agc, self.costas_loop, self.rrc_filter, self.clock_recovery, - self.slicer, self.gray_decoder, self.unpack) - - #fg.connect(self.agc, self.costas_loop, self.rrc_filter, self.clock_recovery, - # self.slicer, self.diffdec, self.gray_decoder, self.unpack) - - # Debug sinks - if 1: - fg.connect(self.agc, - gr.file_sink(gr.sizeof_gr_complex, "agc.dat")) - fg.connect(self.costas_loop, - gr.file_sink(gr.sizeof_gr_complex, "costas_loop.dat")) - fg.connect(self.rrc_filter, - gr.file_sink(gr.sizeof_gr_complex, "rrc.dat")) - fg.connect(self.clock_recovery, - gr.file_sink(gr.sizeof_gr_complex, "clock_recovery.dat")) - fg.connect(self.slicer, - gr.file_sink(gr.sizeof_char, "slicer.dat")) - if(diff): - fg.connect(self.diffdec, - gr.file_sink(gr.sizeof_gr_complex, "diffdec.dat")) - #fg.connect(self.diffdec, - # gr.file_sink(gr.sizeof_char, "diffdec.dat")) - fg.connect(self.unpack, - gr.file_sink(gr.sizeof_char, "unpack.dat")) - - # Initialize base class - gr.hier_block.__init__(self, fg, self.agc, self.unpack) - - def samples_per_baud(self): - return self.spb - - def bits_per_baud(self): - return self.bits_per_symbol - - -######################################################################### - -class mpsk_demod__coherent_detection_of_nondifferentially_encoded_psk(gr.hier_block): - def __init__(self, fg, spb, arity, excess_bw, diff=False, costas_alpha=0.005, gain_mu=0.05): - """ - Hierarchical block for RRC-filtered PSK demodulation - - The input is the complex modulated signal at baseband. - The output is a stream of bits packed 1 bit per byte (LSB) - - @param fg: flow graph - @type fg: flow graph - @param spb: samples per baud >= 2 - @type spb: float - @param excess_bw: Root-raised cosine filter excess bandwidth - @type excess_bw: float - @param arity: whick PSK: 2, 4, 8 - @type arity: int in {2, 4, 8} - @param diff: differential PSK if true - @type diff: bool - @param costas_alpha: loop filter gain - @type costas_alphas: float - @param gain_mu: - @type gain_mu: float - """ - if spb < 2: - raise TypeError, "sbp must be >= 2" - self.spb = spb - - if not arity in (2, 4): - raise ValueError, "n must be 2 or 4" - - bits_per_symbol = int(gru.log2(arity)) - print "bits_per_symbol =", bits_per_symbol - - # Automatic gain control - self.agc = gr.agc_cc(1e-3, 1, 1) - - # Costas loop (carrier tracking) - # FIXME: need to decide how to handle this more generally; do we pull it from higher layer? - if arity == 2: - costas_order = 2 - costas_alpha *= 15 # 2nd order loop needs more gain - else: - costas_order = 4 - beta = .25 * costas_alpha * costas_alpha - self.costas_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, costas_order) - - # RRC data filter - ntaps = 11 * spb - self.rrc_taps = gr.firdes.root_raised_cosine( - 1.0, # gain - spb, # sampling rate - 1.0, # symbol rate - excess_bw, # excess bandwidth (roll-off factor) - ntaps) - - self.rrc_filter=gr.fir_filter_ccf(1, self.rrc_taps) - - # symbol clock recovery - omega = spb - gain_omega = .25 * gain_mu * gain_mu - omega_rel_limit = 0.5 - mu = 0.05 - gain_mu = 0.1 - self.clock_recovery=gr.clock_recovery_mm_cc(omega, gain_omega, - mu, gain_mu, omega_rel_limit) - - # find closest constellation point - #rot = .707 + .707j - rot = 1 - rotated_const = map(lambda pt: pt * rot, constellation[arity]) - print "rotated_const =", rotated_const - - self.slicer = gr.constellation_decoder_cb(rotated_const, range(arity)) - self.gray_decoder = gr.map_bb(gray_to_binary[arity]) - - # unpack the k bit vector into a stream of bits - self.unpack = gr.unpack_k_bits_bb(bits_per_symbol) - - fg.connect(self.agc, self.costas_loop, self.rrc_filter, self.clock_recovery, - self.slicer, self.gray_decoder, self.unpack) - - # Debug sinks - if 1: - fg.connect(self.agc, - gr.file_sink(gr.sizeof_gr_complex, "agc.dat")) - fg.connect(self.costas_loop, - gr.file_sink(gr.sizeof_gr_complex, "costas_loop.dat")) - fg.connect(self.rrc_filter, - gr.file_sink(gr.sizeof_gr_complex, "rrc.dat")) - fg.connect(self.clock_recovery, - gr.file_sink(gr.sizeof_gr_complex, "clock_recovery.dat")) - fg.connect(self.slicer, - gr.file_sink(gr.sizeof_char, "slicer.dat")) - fg.connect(self.unpack, - gr.file_sink(gr.sizeof_char, "unpack.dat")) - - # Initialize base class - gr.hier_block.__init__(self, fg, self.agc, self.unpack) - - def samples_per_baud(self): - return self.spb - - def bits_per_baud(self): - return self.bits_per_symbol - - -mpsk_demod = mpsk_demod__coherent_detection_of_differentially_encoded_psk -#mpsk_demod = mpsk_demod__coherent_detection_of_nondifferentially_encoded_psk diff --git a/gnuradio-examples/python/gmsk2/qpsk_tester.py b/gnuradio-examples/python/gmsk2/qpsk_tester.py deleted file mode 100644 index ea7bae2eb..000000000 --- a/gnuradio-examples/python/gmsk2/qpsk_tester.py +++ /dev/null @@ -1,127 +0,0 @@ -#!/usr/bin/env python - -import random -from gnuradio import gr - -default_access_code = '\xAC\xDD\xA4\xE2\xF2\x8C\x20\xFC' - -def string_to_1_0_list(s): - r = [] - for ch in s: - x = ord(ch) - for i in range(8): - t = (x >> i) & 0x1 - r.append(t) - - return r - -def to_1_0_string(L): - return ''.join(map(lambda x: chr(x + ord('0')), L)) - -code = string_to_1_0_list(default_access_code) -access_code = to_1_0_string(code) - -use_agc = 0 -use_rrc_tx = 1 -use_rrc_rx = 1 -use_sync_loop = 1 -use_clock_sync = 1 - -def main(): - fg = gr.flow_graph() - -# data = (1,2,3,4,5,6,7,8,9) - random.seed() - data = [random.randint(1,100) for i in range(20000)] - data[0] = 0 # you know, for the diff encoding stuff - bytes_src = gr.vector_source_b(data,False) - - k = 2 - spb = 50 - ntaps = 11*spb - excess_bw = 0.9 - threshold = 12 - constellation = (1+0j, 0+1j, -1+0j, 0-1j) - - bytes2chunks = gr.packed_to_unpacked_bb(k, gr.GR_MSB_FIRST) - diffenc = gr.diff_encoder_bb(4) - chunks2symbols = gr.chunks_to_symbols_bc(constellation) - - if use_rrc_tx: - rrc_taps_tx = gr.firdes.root_raised_cosine(spb, spb, 1.0, \ - excess_bw, ntaps) - rrc_tx = gr.interp_fir_filter_ccf(spb, rrc_taps_tx) - else: - rrc_tx = gr.interp_fir_filter_ccf(1, (1,)) - -################### CHANNEL MODEL ############################# - - phase_rotate = gr.multiply_const_cc(1-0.36j) - channel = gr.add_cc() - awgn = gr.noise_source_c(gr.GR_GAUSSIAN, 0.5) - fg.connect(awgn, (channel,1)) - -################### CHANNEL MODEL ############################# - - if use_agc: - agc = gr.agc_cc(1e-4, 1, 1) - else: - agc = gr.multiply_const_cc(1) - - # Downconverter - if use_sync_loop: - costas_alpha=0.005 - beta = costas_alpha*costas_alpha*0.25 - sync_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, 0) - else: - sync_loop = gr.multiply_const_cc(1) - - if use_rrc_rx: - rrc_taps_rx = gr.firdes.root_raised_cosine(1, spb, 1.0, \ - excess_bw, ntaps) - rrc_rx = gr.fir_filter_ccf(1, rrc_taps_rx) - else: - rrc_rx = gr.fir_filter_ccf(1, (1,)) - - # Sampler - if use_clock_sync: - mu = 0.05 - omega = spb - gain_mu = 0.05 - gain_omega = 0.25*gain_mu*gain_mu - omega_rel_limit = 0.5 - clock_sync = gr.clock_recovery_mm_cc(omega, gain_omega, mu, \ - gain_mu, omega_rel_limit) - #clock_sync.set_verbose(True); - else: - clock_sync = gr.fir_filter_ccf(1, (1,)) - - diff_phasor = gr.diff_phasor_cc() - slicer = gr.constellation_decoder_cb((constellation), (0,1,2,3)) - unpack = gr.unpack_k_bits_bb(k) - access = gr.correlate_access_code_bb(access_code,threshold) - - sink = gr.file_sink(gr.sizeof_char, 'output.dat') - - fg.connect(bytes_src, bytes2chunks, diffenc, chunks2symbols, rrc_tx) - fg.connect(rrc_tx, phase_rotate, channel, agc) - fg.connect(agc, sync_loop, rrc_rx, clock_sync, diff_phasor, slicer, sink) - - test = gr.file_sink(gr.sizeof_gr_complex, 'test.dat') - fg.connect(rrc_rx, test) - - fg.connect(chunks2symbols, gr.file_sink(gr.sizeof_gr_complex, 'rrc_tx.dat')) # into TX RRC - fg.connect(channel, gr.file_sink(gr.sizeof_gr_complex, 'channel.dat')) # Out of TX RRC - fg.connect(rrc_rx, gr.file_sink(gr.sizeof_gr_complex, 'rrc_rx.dat')) # Out of RX RRC -> clock_sync - fg.connect(clock_sync, gr.file_sink(gr.sizeof_gr_complex, 'clock_sync.dat')) # Out of M&M sync loop - fg.connect(bytes2chunks, gr.file_sink(gr.sizeof_char, 'source.dat')) - - fg.start() - fg.wait() - -if __name__ == "__main__": - main() - - - - diff --git a/gnuradio-examples/python/gmsk2/qpsk_usrp_tester.py b/gnuradio-examples/python/gmsk2/qpsk_usrp_tester.py deleted file mode 100644 index bf7698a2b..000000000 --- a/gnuradio-examples/python/gmsk2/qpsk_usrp_tester.py +++ /dev/null @@ -1,103 +0,0 @@ -#!/usr/bin/env python - -import random -from gnuradio import gr, gru, usrp - -default_access_code = '\xAC\xDD\xA4\xE2\xF2\x8C\x20\xFC' - -def string_to_1_0_list(s): - r = [] - for ch in s: - x = ord(ch) - for i in range(8): - t = (x >> i) & 0x1 - r.append(t) - - return r - -def to_1_0_string(L): - return ''.join(map(lambda x: chr(x + ord('0')), L)) - -code = string_to_1_0_list(default_access_code) - -access_code = to_1_0_string(code) - -def main(): - - fg = gr.flow_graph() - f_rf = 5e6 - fs = 400e3 - sr = 100e3 - alpha = 0.5 - M = 4 - k = int(gru.log2(M)) - - # Source - src = usrp.source_c () - adc_rate = src.adc_rate() - usrp_decim = int(adc_rate / fs) - src.set_decim_rate(usrp_decim) - - subdev_spec = usrp.pick_rx_subdevice(src) - subdev = usrp.selected_subdev(src, subdev_spec) - print "Using RX d'board %s" % (subdev.side_and_name(),) - src.set_mux(usrp.determine_rx_mux_value(src, subdev_spec)) - src.tune(0, subdev, f_rf) - - g = subdev.gain_range() - subdev.set_gain(g[1]) - subdev.set_auto_tr(True) - - print "USRP Decimation Rate = %d" % usrp_decim - print "RF Frequency = %d" % f_rf - - agc = gr.multiply_const_cc(0.0025) - - # Downconverter - costas_alpha=0.005 - beta = costas_alpha*costas_alpha*0.25 - sync_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, 0) - - # Stage 2 -# fs2 = 200e3 -# D = int(fs / fs2) -# decimator = gr.keep_one_in_n(gr.sizeof_gr_complex, D) -# print "D = %d\nAfter decimator fs = %f" % (D, fs2) - - # Demodulator - taps = gr.firdes.root_raised_cosine(1, fs, sr, alpha, 45) - rrc = gr.fir_filter_ccf(1, taps) - - # Sampler - mu = 0.01 - omega = 4.3 - gain_mu = 0.05 - gain_omega = 0.25*gain_mu*gain_mu - omega_rel_limit = 0.5 - clock_sync = gr.clock_recovery_mm_cc(omega, gain_omega, mu, - gain_mu, omega_rel_limit) - clock_sync.set_verbose(False) - - diff_phasor = gr.diff_phasor_cc() - - threshold = 12 - constellation = (1+0j, 0+1j, -1+0j, 0-1j) - slicer = gr.constellation_decoder_cb((constellation), (0,1,2,3)) - unpack = gr.unpack_k_bits_bb(k) - access = gr.correlate_access_code_bb(access_code,threshold) - - test = gr.file_sink(gr.sizeof_gr_complex, 'test.dat') - sink = gr.file_sink(gr.sizeof_char, 'output.dat') - - fg.connect(src, agc, sync_loop, rrc, clock_sync) - fg.connect(clock_sync, diff_phasor, slicer, unpack, access, sink) - - fg.connect(slicer, gr.file_sink(gr.sizeof_char, 'chunks.dat')) - fg.connect(unpack, gr.file_sink(gr.sizeof_char, 'unpack.dat')) - fg.connect(clock_sync, gr.file_sink(gr.sizeof_gr_complex, 'phasor.dat')) - - fg.start() - fg.wait() - -if __name__ == "__main__": - main() diff --git a/gnuradio-examples/python/gmsk2/receive_path.py b/gnuradio-examples/python/gmsk2/receive_path.py deleted file mode 100644 index c2eba7b76..000000000 --- a/gnuradio-examples/python/gmsk2/receive_path.py +++ /dev/null @@ -1,150 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005,2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gru, blks -from gnuradio import usrp - -# from current dir -from pick_bitrate import pick_rx_bitrate - -# ///////////////////////////////////////////////////////////////////////////// -# receive path -# ///////////////////////////////////////////////////////////////////////////// - -class receive_path(gr.hier_block): - def __init__(self, fg, demod_class, rx_subdev_spec, - bitrate, decim, spb, - rx_callback, options, demod_kwargs): - - self.u = usrp.source_c (fusb_block_size=options.fusb_block_size, - fusb_nblocks=options.fusb_nblocks) - adc_rate = self.u.adc_rate() - - (self._bitrate, self._spb, self._decim) = \ - pick_rx_bitrate(bitrate, demod_class.bits_per_baud(), spb, decim, adc_rate) - - self.u.set_decim_rate(self._decim) - sw_decim = 1 - - if rx_subdev_spec is None: - rx_subdev_spec = usrp.pick_rx_subdevice(self.u) - self.subdev = usrp.selected_subdev(self.u, rx_subdev_spec) - print "Using RX d'board %s" % (self.subdev.side_and_name(),) - - self.u.set_mux(usrp.determine_rx_mux_value(self.u, rx_subdev_spec)) - - # Create filter to get actual channel we want - chan_coeffs = gr.firdes.low_pass (1.0, # gain - sw_decim * self._spb, # sampling rate - 1.0, # midpoint of trans. band - 0.1, # width of trans. band - gr.firdes.WIN_HANN) # filter type - - print "len(rx_chan_coeffs) =", len(chan_coeffs) - - # Decimating Channel filter - # complex in and out, float taps - self.chan_filt = gr.fft_filter_ccc(sw_decim, chan_coeffs) - #self.chan_filt = gr.fir_filter_ccf(sw_decim, chan_coeffs) - - # receiver - self.packet_receiver = \ - blks.demod_pkts(fg, - demod_class(fg, spb=self._spb, **demod_kwargs), - access_code=None, - callback=rx_callback, - threshold=-1) - - fg.connect(self.u, self.chan_filt, self.packet_receiver) - gr.hier_block.__init__(self, fg, None, None) - - g = self.subdev.gain_range() - #self.set_gain((g[0] + g[1])/2) # set gain to midpoint - self.set_gain(g[1]) # set gain to max - self.set_auto_tr(True) # enable Auto Transmit/Receive switching - - # Carrier Sensing Blocks - alpha = 0.001 - thresh = 30 # in dB, will have to adjust - self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha) - fg.connect(self.chan_filt, self.probe) - - def set_freq(self, target_freq): - """ - Set the center frequency we're interested in. - - @param target_freq: frequency in Hz - @rypte: bool - - Tuning is a two step process. First we ask the front-end to - tune as close to the desired frequency as it can. Then we use - the result of that operation and our target_frequency to - determine the value for the digital up converter. - """ - r = self.u.tune(0, self.subdev, target_freq) - if r: - return True - - return False - - def set_gain(self, gain): - if gain is None: - r = self.subdev.gain_range() - gain = (r[0] + r[1])/2 # set gain to midpoint - self.gain = gain - return self.subdev.set_gain(gain) - - def set_auto_tr(self, enable): - return self.subdev.set_auto_tr(enable) - - def bitrate(self): - return self._bitrate - - def spb(self): - return self._spb - - def decim(self): - return self._decim - - - def carrier_sensed(self): - """ - Return True if we think carrier is present. - """ - #return self.probe.level() > X - return self.probe.unmuted() - - def carrier_threshold(self): - """ - Return current setting in dB. - """ - return self.probe.threshold() - - def set_carrier_threshold(self, threshold_in_db): - """ - Set carrier threshold. - - @param threshold_in_db: set detection threshold - @type threshold_in_db: float (dB) - """ - self.probe.set_threshold(threshold_in_db) - diff --git a/gnuradio-examples/python/gmsk2/rx_voice.py b/gnuradio-examples/python/gmsk2/rx_voice.py deleted file mode 100755 index 605b46360..000000000 --- a/gnuradio-examples/python/gmsk2/rx_voice.py +++ /dev/null @@ -1,132 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gru, blks -from gnuradio import usrp -from gnuradio import audio -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -from gnuradio.vocoder import gsm_full_rate - -import random -import struct - -# from current dir -from receive_path import receive_path - -#import os -#print os.getpid() -#raw_input('Attach and press enter') - - -class audio_tx(gr.hier_block): - def __init__(self, fg): - self.packet_src = gr.message_source(33) - voice_decoder = gsm_full_rate.decode_ps() - s2f = gr.short_to_float () - sink_scale = gr.multiply_const_ff(1.0/32767.) - audio_sink = audio.sink(8000) - fg.connect(self.packet_src, voice_decoder, s2f, sink_scale, audio_sink) - gr.hier_block.__init__(self, fg, self.packet_src, audio_sink) - - def msgq(self): - return self.packet_src.msgq() - - -class my_graph(gr.flow_graph): - - def __init__(self, rx_subdev_spec, bitrate, decim_rate, spb, rx_callback, log): - gr.flow_graph.__init__(self) - self.rxpath = receive_path(self, rx_subdev_spec, bitrate, decim_rate, - spb, rx_callback, log) - - self.audio_tx = audio_tx(self) - - -# ///////////////////////////////////////////////////////////////////////////// -# main -# ///////////////////////////////////////////////////////////////////////////// - -global n_rcvd, n_right - -def main(): - global n_rcvd, n_right - - n_rcvd = 0 - n_right = 0 - - def rx_callback(ok, payload): - global n_rcvd, n_right - n_rcvd += 1 - if ok: - n_right += 1 - - fg.audio_tx.msgq().insert_tail(gr.message_from_string(payload)) - - print "ok = %r n_rcvd = %4d n_right = %4d" % ( - ok, n_rcvd, n_right) - - parser = OptionParser (option_class=eng_option) - parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, - help="select USRP Rx side A or B") - parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, - help="set Rx frequency to FREQ [default=%default]", metavar="FREQ") - parser.add_option("-r", "--bitrate", type="eng_float", default=100e3, - help="specify bitrate. spb and interp will be derived.") - parser.add_option("-S", "--spb", type="int", default=None, help="set samples/baud [default=%default]") - parser.add_option("-d", "--decim", type="intx", default=None, - help="set fpga decim rate to DECIM [default=%default]") - parser.add_option("-g", "--gain", type="eng_float", default=27, - help="set rx gain") - parser.add_option("","--log", action="store_true", default=False, - help="enable diagnostic logging") - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help() - sys.exit(1) - - if options.freq < 1e6: - options.freq *= 1e6 - - # build the graph - fg = my_graph(options.rx_subdev_spec, options.bitrate, - options.decim, options.spb, rx_callback, options.log) - - print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.rxpath.bitrate()),) - print "spb: %3d" % (fg.rxpath.spb(),) - print "decim: %3d" % (fg.rxpath.decim(),) - - fg.rxpath.set_freq(options.freq) - fg.rxpath.set_gain(options.gain) - print "Rx gain_range: ", fg.rxpath.subdev.gain_range(), " using", fg.rxpath.gain - - fg.start() # start flow graph - fg.wait() # wait for it to finish - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass diff --git a/gnuradio-examples/python/gmsk2/transmit_path.py b/gnuradio-examples/python/gmsk2/transmit_path.py deleted file mode 100644 index d360d1a5e..000000000 --- a/gnuradio-examples/python/gmsk2/transmit_path.py +++ /dev/null @@ -1,108 +0,0 @@ -# -# Copyright 2005,2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gru, blks -from gnuradio import usrp - -# from current dir -from pick_bitrate import pick_tx_bitrate - -# ///////////////////////////////////////////////////////////////////////////// -# transmit path -# ///////////////////////////////////////////////////////////////////////////// - -class transmit_path(gr.hier_block): - def __init__(self, fg, mod_class, tx_subdev_spec, - bitrate, interp, spb, gain, - options, mod_kwargs): - - self.normal_gain = gain - - self.u = usrp.sink_c (fusb_block_size=options.fusb_block_size, - fusb_nblocks=options.fusb_nblocks) - dac_rate = self.u.dac_rate(); - - print mod_class - print mod_class.bits_per_baud() - (self._bitrate, self._spb, self._interp) = \ - pick_tx_bitrate(bitrate, mod_class.bits_per_baud(), spb, interp, dac_rate) - - self.u.set_interp_rate(self._interp) - - # determine the daughterboard subdevice we're using - if tx_subdev_spec is None: - tx_subdev_spec = usrp.pick_tx_subdevice(self.u) - self.u.set_mux(usrp.determine_tx_mux_value(self.u, tx_subdev_spec)) - self.subdev = usrp.selected_subdev(self.u, tx_subdev_spec) - print "Using TX d'board %s" % (self.subdev.side_and_name(),) - - # transmitter - self.packet_transmitter = \ - blks.mod_pkts(fg, - mod_class(fg, spb=self._spb, **mod_kwargs), - access_code=None, - msgq_limit=4, - pad_for_usrp=True) - - self.amp = gr.multiply_const_cc (self.normal_gain) - - fg.connect(self.packet_transmitter, self.amp, self.u) - gr.hier_block.__init__(self, fg, None, None) - - self.set_gain(self.subdev.gain_range()[1]) # set max Tx gain - self.set_auto_tr(True) # enable Auto Transmit/Receive switching - - def set_freq(self, target_freq): - """ - Set the center frequency we're interested in. - - @param target_freq: frequency in Hz - @rypte: bool - - Tuning is a two step process. First we ask the front-end to - tune as close to the desired frequency as it can. Then we use - the result of that operation and our target_frequency to - determine the value for the digital up converter. - """ - r = self.u.tune(self.subdev._which, self.subdev, target_freq) - if r: - return True - - return False - - def set_gain(self, gain): - self.gain = gain - self.subdev.set_gain(gain) - - def set_auto_tr(self, enable): - return self.subdev.set_auto_tr(enable) - - def send_pkt(self, payload='', eof=False): - return self.packet_transmitter.send_pkt(payload, eof) - - def bitrate(self): - return self._bitrate - - def spb(self): - return self._spb - - def interp(self): - return self._interp diff --git a/gnuradio-examples/python/gmsk2/tunnel.py b/gnuradio-examples/python/gmsk2/tunnel.py deleted file mode 100755 index faf16a634..000000000 --- a/gnuradio-examples/python/gmsk2/tunnel.py +++ /dev/null @@ -1,310 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005,2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - - -# ///////////////////////////////////////////////////////////////////////////// -# -# This code sets up up a virtual ethernet interface (typically gr0), -# and relays packets between the interface and the GNU Radio PHY+MAC -# -# What this means in plain language, is that if you've got a couple -# of USRPs on different machines, and if you run this code on those -# machines, you can talk between them using normal TCP/IP networking. -# -# ///////////////////////////////////////////////////////////////////////////// - - -from gnuradio import gr, gru, blks -from gnuradio import usrp -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -import random -import time -import struct -import sys -import os - -# from current dir -from transmit_path import transmit_path -from receive_path import receive_path -import fusb_options - -#print os.getpid() -#raw_input('Attach and press enter') - - -# ///////////////////////////////////////////////////////////////////////////// -# -# Use the Universal TUN/TAP device driver to move packets to/from kernel -# -# See /usr/src/linux/Documentation/networking/tuntap.txt -# -# ///////////////////////////////////////////////////////////////////////////// - -# Linux specific... -# TUNSETIFF ifr flags from - -IFF_TUN = 0x0001 # tunnel IP packets -IFF_TAP = 0x0002 # tunnel ethernet frames -IFF_NO_PI = 0x1000 # don't pass extra packet info -IFF_ONE_QUEUE = 0x2000 # beats me ;) - -def open_tun_interface(tun_device_filename): - from fcntl import ioctl - - mode = IFF_TAP | IFF_NO_PI - TUNSETIFF = 0x400454ca - - tun = os.open(tun_device_filename, os.O_RDWR) - ifs = ioctl(tun, TUNSETIFF, struct.pack("16sH", "gr%d", mode)) - ifname = ifs[:16].strip("\x00") - return (tun, ifname) - - -# ///////////////////////////////////////////////////////////////////////////// -# the flow graph -# ///////////////////////////////////////////////////////////////////////////// - -class my_graph(gr.flow_graph): - - def __init__(self, mod_class, demod_class, - tx_subdev_spec, rx_subdev_spec, - rx_callback, - options, kwargs): - - gr.flow_graph.__init__(self) - self.txpath = transmit_path(self, mod_class, tx_subdev_spec, - options.bitrate, options.interp, options.spb, - options.tx_gain, options, kwargs) - self.rxpath = receive_path(self, demod_class, rx_subdev_spec, - options.bitrate, options.decim, options.spb, - rx_callback, options, {}) - - def send_pkt(self, payload='', eof=False): - return self.txpath.send_pkt(payload, eof) - - def carrier_sensed(self): - """ - Return True if the receive path thinks there's carrier - """ - return self.rxpath.carrier_sensed() - - -# ///////////////////////////////////////////////////////////////////////////// -# Carrier Sense MAC -# ///////////////////////////////////////////////////////////////////////////// - -class cs_mac(object): - """ - Prototype carrier sense MAC - - Reads packets from the TUN/TAP interface, and sends them to the PHY. - Receives packets from the PHY via phy_rx_callback, and sends them - into the TUN/TAP interface. - - Of course, we're not restricted to getting packets via TUN/TAP, this - is just an example. - """ - def __init__(self, tun_fd, verbose=False): - self.tun_fd = tun_fd # file descriptor for TUN/TAP interface - self.verbose = verbose - self.fg = None # flow graph (access to PHY) - - def set_flow_graph(self, fg): - self.fg = fg - - def phy_rx_callback(self, ok, payload): - """ - Invoked by thread associated with PHY to pass received packet up. - - @param ok: bool indicating whether payload CRC was OK - @param payload: contents of the packet (string) - """ - if self.verbose: - print "Rx: ok = %r len(payload) = %4d" % (ok, len(payload)) - if ok: - os.write(self.tun_fd, payload) - - def main_loop(self): - """ - Main loop for MAC. - Only returns if we get an error reading from TUN. - - FIXME: may want to check for EINTR and EAGAIN and reissue read - """ - min_delay = 0.001 # seconds - - while 1: - payload = os.read(self.tun_fd, 10*1024) - if not payload: - self.fg.send_pkt(eof=True) - break - - if self.verbose: - print "Tx: len(payload) = %4d" % (len(payload),) - - delay = min_delay - while self.fg.carrier_sensed(): - sys.stderr.write('B') - time.sleep(delay) - if delay < 0.050: - delay = delay * 2 # exponential back-off - - self.fg.send_pkt(payload) - - -# ///////////////////////////////////////////////////////////////////////////// -# main -# ///////////////////////////////////////////////////////////////////////////// - -def main(): - - parser = OptionParser (option_class=eng_option) - parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, - help="set Tx and Rx frequency to FREQ [default=%default]", - metavar="FREQ") - parser.add_option("-r", "--bitrate", type="eng_float", default=None, - help="specify bitrate. spb and interp will be derived.") - parser.add_option("-g", "--rx-gain", type="eng_float", default=27, - help="set rx gain") - parser.add_option("-p", "--tx-gain", type="eng_float", default=100, - help="set tx gain") - parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=None, - help="select USRP Tx side A or B") - parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, - help="select USRP Rx side A or B") - parser.add_option("-S", "--spb", type="int", default=None, - help="set samples/baud [default=%default]") - parser.add_option("-d", "--decim", type="intx", default=None, - help="set fpga decim rate to DECIM [default=%default]") - parser.add_option("-i", "--interp", type="intx", default=None, - help="set fpga interpolation rate to INTERP [default=%default]") - parser.add_option("-c", "--carrier-threshold", type="eng_float", default=30, - help="set carrier detect threshold (dB) [default=%default]") - parser.add_option("", "--bt", type="float", default=0.3, - help="set bandwidth-time product [default=%default]") - parser.add_option("","--tun-device-filename", default="/dev/net/tun", - help="path to tun device file [default=%default]") - parser.add_option("-v","--verbose", action="store_true", default=False) - fusb_options.add_options(parser) - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help() - sys.exit(1) - - if options.freq < 1e6: - options.freq *= 1e6 - - mod_kwargs = { - 'bt' : options.bt, - } - - # open the TUN/TAP interface - (tun_fd, tun_ifname) = open_tun_interface(options.tun_device_filename) - - # Attempt to enable realtime scheduling - r = gr.enable_realtime_scheduling() - if r == gr.RT_OK: - realtime = True - else: - realtime = False - print "Note: failed to enable realtime scheduling" - - - # If the user hasn't set the fusb_* parameters on the command line, - # pick some values that will reduce latency. - - if options.fusb_block_size == 0 and options.fusb_nblocks == 0: - if realtime: # be more aggressive - options.fusb_block_size = gr.prefs().get_long('fusb', 'rt_block_size', 1024) - options.fusb_nblocks = gr.prefs().get_long('fusb', 'rt_nblocks', 16) - else: - options.fusb_block_size = gr.prefs().get_long('fusb', 'block_size', 4096) - options.fusb_nblocks = gr.prefs().get_long('fusb', 'nblocks', 16) - - print "fusb_block_size =", options.fusb_block_size - print "fusb_nblocks =", options.fusb_nblocks - - # instantiate the MAC - mac = cs_mac(tun_fd, verbose=True) - - - # build the graph (PHY) - fg = my_graph(blks.gmsk2_mod, blks.gmsk2_demod, - options.tx_subdev_spec, options.rx_subdev_spec, - mac.phy_rx_callback, - options, mod_kwargs) - - mac.set_flow_graph(fg) # give the MAC a handle for the PHY - - if fg.txpath.bitrate() != fg.rxpath.bitrate(): - print "WARNING: Transmit bitrate = %sb/sec, Receive bitrate = %sb/sec" % ( - eng_notation.num_to_str(fg.txpath.bitrate()), - eng_notation.num_to_str(fg.rxpath.bitrate())) - - print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.txpath.bitrate()),) - print "spb: %3d" % (fg.txpath.spb(),) - print "interp: %3d" % (fg.txpath.interp(),) - - ok = fg.txpath.set_freq(options.freq) - if not ok: - print "Failed to set Tx frequency to %s" % (eng_notation.num_to_str(options.freq),) - raise SystemExit - - ok = fg.rxpath.set_freq(options.freq) - if not ok: - print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(options.freq),) - raise SystemExit - - print "Tx gain: ", options.tx_gain - fg.rxpath.set_gain(options.rx_gain) - print "Rx gain_range: ", fg.rxpath.subdev.gain_range(), " using", fg.rxpath.gain - - fg.rxpath.set_carrier_threshold(options.carrier_threshold) - print "Carrier sense threshold:", options.carrier_threshold, "dB" - - print - print "Allocated virtual ethernet interface: %s" % (tun_ifname,) - print "You must now use ifconfig to set its IP address. E.g.," - print - print " $ sudo ifconfig %s 10.10.10.1" % (tun_ifname,) - print - print "Be sure to use a different address in the same subnet for each machine." - print - - - fg.start() # Start executing the flow graph (runs in separate threads) - - mac.main_loop() # don't expect this to return... - - fg.stop() # but if it does, tell flow graph to stop. - fg.wait() # wait for it to finish - - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass diff --git a/gnuradio-examples/python/gmsk2/tx_voice.py b/gnuradio-examples/python/gmsk2/tx_voice.py deleted file mode 100755 index b1f6b0ab8..000000000 --- a/gnuradio-examples/python/gmsk2/tx_voice.py +++ /dev/null @@ -1,139 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gru, blks -from gnuradio import usrp -from gnuradio import audio -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -from gnuradio.vocoder import gsm_full_rate - -import random -import time -import struct -import sys - -# from current dir -from transmit_path import transmit_path - -#import os -#print os.getpid() -#raw_input('Attach and press enter') - - -class my_graph(gr.flow_graph): - - def __init__(self, tx_subdev_spec, bitrate, interp_rate, spb, bt): - gr.flow_graph.__init__(self) - self.txpath = transmit_path(self, tx_subdev_spec, bitrate, interp_rate, spb, bt) - - audio_input = "" - sample_rate = 8000 - src = audio.source(sample_rate, audio_input) - src_scale = gr.multiply_const_ff(32767) - f2s = gr.float_to_short() - voice_coder = gsm_full_rate.encode_sp() - self.packets_from_encoder = gr.msg_queue() - packet_sink = gr.message_sink(33, self.packets_from_encoder, False) - self.connect(src, src_scale, f2s, voice_coder, packet_sink) - - - -# ///////////////////////////////////////////////////////////////////////////// -# main -# ///////////////////////////////////////////////////////////////////////////// - -def main(): - - def send_pkt(payload='', eof=False): - return fg.txpath.send_pkt(payload, eof) - - def rx_callback(ok, payload): - print "ok = %r, payload = '%s'" % (ok, payload) - - parser = OptionParser (option_class=eng_option) - parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=None, - help="select USRP Tx side A or B") - parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, - help="set Tx and Rx frequency to FREQ [default=%default]", metavar="FREQ") - parser.add_option("-r", "--bitrate", type="eng_float", default=100e3, - help="specify bitrate. spb and interp will be derived.") - parser.add_option("-S", "--spb", type="int", default=None, help="set samples/baud [default=%default]") - parser.add_option("-i", "--interp", type="intx", default=None, - help="set fpga interpolation rate to INTERP [default=%default]") - parser.add_option("-s", "--size", type="eng_float", default=1500, - help="set packet size [default=%default]") - parser.add_option("", "--bt", type="float", default=0.3, help="set bandwidth-time product [default=%default]") - parser.add_option("-M", "--megabytes", type="eng_float", default=1.0, - help="set megabytes to transmit [default=%default]") - parser.add_option("","--discontinuous", action="store_true", default=False, - help="enable discontinous transmission (bursts of 5 packets)") - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help() - sys.exit(1) - - if options.freq < 1e6: - options.freq *= 1e6 - - pkt_size = int(options.size) - - # build the graph - fg = my_graph(options.tx_subdev_spec, options.bitrate, options.interp, - options.spb, options.bt) - - print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.txpath.bitrate()),) - print "spb: %3d" % (fg.txpath.spb(),) - print "interp: %3d" % (fg.txpath.interp(),) - - fg.txpath.set_freq(options.freq) - - fg.start() # start flow graph - - # generate and send packets - nbytes = int(1e6 * options.megabytes) - n = 0 - pktno = 0 - - while n < nbytes: - packet = fg.packets_from_encoder.delete_head() - s = packet.to_string() - send_pkt(s) - n += len(s) - sys.stderr.write('.') - if options.discontinuous and pktno % 5 == 4: - time.sleep(1) - pktno += 1 - - send_pkt(eof=True) - fg.wait() # wait for it to finish - fg.txpath.set_auto_tr(False) - - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass diff --git a/gnuradio-examples/python/mc4020/Makefile.am b/gnuradio-examples/python/mc4020/Makefile.am deleted file mode 100644 index 45f48b46b..000000000 --- a/gnuradio-examples/python/mc4020/Makefile.am +++ /dev/null @@ -1,28 +0,0 @@ -# -# Copyright 2004 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -EXTRA_DIST = \ - fm_demod.py \ - mc4020_fft.py - - - - diff --git a/gnuradio-examples/python/mc4020/fm_demod.py b/gnuradio-examples/python/mc4020/fm_demod.py deleted file mode 100755 index e58407f73..000000000 --- a/gnuradio-examples/python/mc4020/fm_demod.py +++ /dev/null @@ -1,150 +0,0 @@ -#!/usr/bin/env python - -from gnuradio import gr -from gnuradio import audio -from gnuradio import mc4020 -import sys - -def high_speed_adc (fg, input_rate): - # return gr.file_source (gr.sizeof_short, "dummy.dat", False) - return mc4020.source (input_rate, mc4020.MCC_CH3_EN | mc4020.MCC_ALL_1V) - -# -# return a gr.flow_graph -# -def build_graph (freq1, freq2): - input_rate = 20e6 - cfir_decimation = 125 - audio_decimation = 5 - - quad_rate = input_rate / cfir_decimation - audio_rate = quad_rate / audio_decimation - - fg = gr.flow_graph () - - # use high speed ADC as input source - src = high_speed_adc (fg, input_rate) - - # compute FIR filter taps for channel selection - channel_coeffs = \ - gr.firdes.low_pass (1.0, # gain - input_rate, # sampling rate - 250e3, # low pass cutoff freq - 8*100e3, # width of trans. band - gr.firdes.WIN_HAMMING) - - # input: short; output: complex - chan_filter1 = \ - gr.freq_xlating_fir_filter_scf (cfir_decimation, - channel_coeffs, - freq1, # 1st station freq - input_rate) - - (head1, tail1) = build_pipeline (fg, quad_rate, audio_decimation) - - # sound card as final sink - audio_sink = audio.sink (int (audio_rate)) - - # now wire it all together - fg.connect (src, chan_filter1) - fg.connect (chan_filter1, head1) - fg.connect (tail1, (audio_sink, 0)) - - # two stations at once? - if freq2: - # Extract the second station and connect - # it to a second pipeline... - - # input: short; output: complex - chan_filter2 = \ - gr.freq_xlating_fir_filter_scf (cfir_decimation, - channel_coeffs, - freq2, # 2nd station freq - input_rate) - - (head2, tail2) = build_pipeline (fg, quad_rate, audio_decimation) - - fg.connect (src, chan_filter2) - fg.connect (chan_filter2, head2) - fg.connect (tail2, (audio_sink, 1)) - - return fg - -def build_pipeline (fg, quad_rate, audio_decimation): - '''Given a flow_graph, fg, construct a pipeline - for demodulating a broadcast FM signal. The - input is the downconverteed complex baseband - signal. The output is the demodulated audio. - - build_pipeline returns a two element tuple - containing the input and output endpoints. - ''' - fm_demod_gain = 2200.0/32768.0 - audio_rate = quad_rate / audio_decimation - volume = 1.0 - - # input: complex; output: float - fm_demod = gr.quadrature_demod_cf (volume*fm_demod_gain) - - # compute FIR filter taps for audio filter - width_of_transition_band = audio_rate / 32 - audio_coeffs = gr.firdes.low_pass (1.0, # gain - quad_rate, # sampling rate - audio_rate/2 - width_of_transition_band, - width_of_transition_band, - gr.firdes.WIN_HAMMING) - - # input: float; output: float - audio_filter = gr.fir_filter_fff (audio_decimation, audio_coeffs) - - fg.connect (fm_demod, audio_filter) - return ((fm_demod, 0), (audio_filter, 0)) - - -def main (args): - nargs = len (args) - if nargs == 1: - freq1 = float (args[0]) * 1e6 - freq2 = None - elif nargs == 2: - freq1 = float (args[0]) * 1e6 - freq2 = float (args[1]) * 1e6 - else: - sys.stderr.write ('usage: fm_demod freq1 [freq2]\n') - sys.exit (1) - - # connect to RF front end - rf_front_end = gr.microtune_4937_eval_board () - if not rf_front_end.board_present_p (): - raise IOError, 'RF front end not found' - - # set front end gain - rf_front_end.set_AGC (300) - IF_freq = rf_front_end.get_output_freq () - IF_freq = 5.75e6 - - if not freq2: # one station - - rf_front_end.set_RF_freq (freq1) - fg = build_graph (IF_freq, None) - - else: # two stations - - if abs (freq1 - freq2) > 5.5e6: - raise IOError, 'freqs too far apart' - - target_freq = (freq1 + freq2) / 2 - actual_freq = rf_front_end.set_RF_freq (target_freq) - #actual_freq = target_freq - - fg = build_graph (IF_freq + freq1 - actual_freq, - IF_freq + freq2 - actual_freq) - - fg.start () # fork thread(s) and return - raw_input ('Press Enter to quit: ') - fg.stop () - -if __name__ == '__main__': - main (sys.argv[1:]) - - diff --git a/gnuradio-examples/python/mc4020/mc4020_fft.py b/gnuradio-examples/python/mc4020/mc4020_fft.py deleted file mode 100755 index d226b9ca8..000000000 --- a/gnuradio-examples/python/mc4020/mc4020_fft.py +++ /dev/null @@ -1,53 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2004 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr -from gnuradio import mc4020 -from gnuradio.eng_option import eng_option -from gnuradio.wxgui import stdgui, fftsink -from optparse import OptionParser -import wx - -class app_flow_graph (stdgui.gui_flow_graph): - def __init__(self, frame, panel, vbox, argv): - stdgui.gui_flow_graph.__init__ (self, frame, panel, vbox, argv) - - - parser = OptionParser (option_class=eng_option) - (options, args) = parser.parse_args () - - input_rate = 20e6 - src = mc4020.source (input_rate, mc4020.MCC_CH3_EN | mc4020.MCC_ALL_1V) - cvt = gr.short_to_float () - block, fft_win = fftsink.make_fft_sink_f (self, panel, "Rx Data", 512, input_rate) - - self.connect (src, cvt) - self.connect (cvt, block) - vbox.Add (fft_win, 1, wx.EXPAND) - - -def main (): - app = stdgui.stdapp (app_flow_graph, "USRP FFT") - app.MainLoop () - -if __name__ == '__main__': - main () diff --git a/gnuradio-examples/python/usrp/usrp_siggen.py b/gnuradio-examples/python/usrp/usrp_siggen.py index 59e01e0a9..6a41f74b8 100755 --- a/gnuradio-examples/python/usrp/usrp_siggen.py +++ b/gnuradio-examples/python/usrp/usrp_siggen.py @@ -101,10 +101,10 @@ class my_graph(gr.flow_graph): """ r = self.u.tune(self.subdev._which, self.subdev, target_freq) if r: - print "r.baseband_freq =", eng_notation.num_to_str(r.baseband_freq) - print "r.dxc_freq =", eng_notation.num_to_str(r.dxc_freq) - print "r.residual_freq =", eng_notation.num_to_str(r.residual_freq) - print "r.inverted =", r.inverted + #print "r.baseband_freq =", eng_notation.num_to_str(r.baseband_freq) + #print "r.dxc_freq =", eng_notation.num_to_str(r.dxc_freq) + #print "r.residual_freq =", eng_notation.num_to_str(r.residual_freq) + #print "r.inverted =", r.inverted return True return False -- cgit