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-rw-r--r--gr-sounder/src/python/sounder.py271
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diff --git a/gr-sounder/src/python/sounder.py b/gr-sounder/src/python/sounder.py
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--- a/gr-sounder/src/python/sounder.py
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@@ -1,271 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2007 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 3, 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, usrp
-from gnuradio import eng_notation
-
-n2s = eng_notation.num_to_str
-
-FR_MODE = usrp.FR_USER_0
-bmFR_MODE_RESET = 1 << 0 # bit 0: active high reset
-bmFR_MODE_TX = 1 << 1 # bit 1: enable transmitter
-bmFR_MODE_RX = 1 << 2 # bit 2: enable receiver
-bmFR_MODE_LP = 1 << 3 # bit 3: enable digital loopback
-
-FR_DEGREE = usrp.FR_USER_1
-FR_AMPL = usrp.FR_USER_2
-
-def pick_subdevice(u):
- """
- The user didn't specify a subdevice on the command line.
- If there's a daughterboard on A, select A.
- If there's a daughterboard on B, select B.
- Otherwise, select A.
- """
- if u.db[0][0].dbid() >= 0: # dbid is < 0 if there's no d'board or a problem
- return (0, 0)
- if u.db[1][0].dbid() >= 0:
- return (1, 0)
- return (0, 0)
-
-class sounder_tx:
- def __init__(self, loopback=False,ampl=4096,verbose=False,debug=False):
- self._loopback=loopback
- self._amplitude = ampl
- self._verbose = verbose
- self._debug = debug
- self._u = usrp.sink_s(fpga_filename='usrp_sounder.rbf')
- if not self._loopback:
- self._subdev_spec = usrp.pick_tx_subdevice(self._u)
- self._subdev = usrp.selected_subdev(self._u, self._subdev_spec)
- if self._verbose:
- print "Using", self._subdev.name(), "for sounder transmitter."
- self.set_amplitude(ampl)
- if not self._loopback:
- self._subdev.set_lo_offset(0.0)
- self._u.start()
- if not self._loopback:
- self._subdev.set_enable(True)
-
- def tune(self, frequency):
- if self._verbose:
- print "Setting transmitter frequency to", n2s(frequency)
- result = self._u.tune(0, self._subdev, frequency)
- if result == False:
- raise RuntimeError("Failed to set transmitter frequency.")
-
- def set_amplitude(self, ampl):
- self._amplitude = ampl
- if self._debug:
- print "Writing amplitude register with:", hex(self._mode)
- self._u._write_fpga_reg(FR_AMPL, self._amplitude)
-
-class sounder_rx:
- def __init__(self,subdev_spec=None,gain=None,length=1,alpha=1.0,msgq=None,loopback=False,verbose=False,debug=False):
- self._subdev_spec = subdev_spec
- self._gain = gain
- self._length = length
- self._alpha = alpha
- self._msgq = msgq
- self._loopback = loopback
- self._verbose = verbose
- self._debug = debug
-
- self._tb = gr.top_block()
- self._u = usrp.source_c(fpga_filename='usrp_sounder.rbf')
- if not self._loopback:
- if self._subdev_spec == None:
- self._subdev_spec = pick_subdevice(self._u)
- self._u.set_mux(usrp.determine_rx_mux_value(self._u, self._subdev_spec))
- self._subdev = usrp.selected_subdev(self._u, self._subdev_spec)
- if self._verbose:
- print "Using", self._subdev.name(), "for sounder receiver."
-
- self.set_gain(self._gain)
- self._vblen = gr.sizeof_gr_complex*self._length
- if self._debug:
- print "Generating impulse vectors of length", self._length, "byte length", self._vblen
-
- self._s2v = gr.stream_to_vector(gr.sizeof_gr_complex, self._length)
- if self._verbose:
- print "Using smoothing alpha of", self._alpha
- self._lpf = gr.single_pole_iir_filter_cc(self._alpha, self._length)
- self._sink = gr.message_sink(self._vblen, self._msgq, True)
- self._tb.connect(self._u, self._s2v, self._lpf, self._sink)
-
- def tune(self, frequency):
- if self._verbose:
- print "Setting receiver frequency to", n2s(frequency)
- result = self._u.tune(0, self._subdev, frequency)
- if result == False:
- raise RuntimeError("Failed to set receiver frequency.")
-
- def set_gain(self, gain):
- self._gain = gain
- if self._loopback:
- return
-
- if self._gain is None:
- # if no gain was specified, use the mid-point in dB
- g = self._subdev.gain_range()
- self._gain = float(g[0]+g[1])/2
- if self._verbose:
- print "Setting receiver gain to", gain
- self._subdev.set_gain(self._gain)
-
- def start(self):
- if self._debug:
- print "Starting receiver flow graph."
- self._tb.start()
-
- def wait(self):
- if self._debug:
- print "Waiting for threads..."
- self._tb.wait()
-
- def stop(self):
- if self._debug:
- print "Stopping receiver flow graph."
- self._tb.stop()
- self.wait()
- if self._debug:
- print "Receiver flow graph stopped."
-
-
-class sounder:
- def __init__(self,transmit=False,receive=False,loopback=False,rx_subdev_spec=None,ampl=0x1FFF,
- frequency=0.0,rx_gain=None,degree=12,length=1,alpha=1.0,msgq=None,verbose=False,debug=False):
- self._transmit = transmit
- self._receive = receive
- self._loopback = loopback
- self._rx_subdev_spec = rx_subdev_spec
- self._frequency = frequency
- self._amplitude = ampl
- self._rx_gain = rx_gain
- self._degree = degree
- self._length = length
- self._alpha = alpha
- self._msgq = msgq
- self._verbose = verbose
- self._debug = debug
- self._mode = 0
- self._u = None
- self._trans = None
- self._rcvr = None
- self._transmitting = False
- self._receiving = False
-
- if self._transmit:
- self._trans = sounder_tx(loopback=self._loopback,ampl=self._amplitude,
- verbose=self._verbose)
- self._u = self._trans._u
-
- if self._receive:
- self._rcvr = sounder_rx(subdev_spec=self._rx_subdev_spec,length=self._length,
- gain=self._rx_gain,alpha=self._alpha,msgq=self._msgq,
- loopback=self._loopback,verbose=self._verbose,
- debug=self._debug)
- self._u = self._rcvr._u # either receiver or transmitter object will do
-
- self.set_reset(True)
- if self._loopback == False:
- self.tune(self._frequency)
- self.set_degree(self._degree)
- self.set_loopback(self._loopback)
- self.set_reset(False)
-
- def tune(self, frequency):
- self._frequency = frequency
- if self._rcvr:
- self._rcvr.tune(frequency)
- if self._trans:
- self._trans.tune(frequency)
-
- def set_degree(self, degree):
- if self._verbose:
- print "Setting PN code degree to", degree
- self._u._write_fpga_reg(FR_DEGREE, degree);
-
- def _write_mode(self):
- if self._debug:
- print "Writing mode register with:", hex(self._mode)
- self._u._write_fpga_reg(FR_MODE, self._mode)
-
- def enable_tx(self, value):
- if value:
- if self._verbose:
- print "Enabling transmitter."
- self._mode |= bmFR_MODE_TX
- self._transmitting = True
- else:
- if self._verbose:
- print "Disabling transmitter."
- self._mode &= ~bmFR_MODE_TX
- self._write_mode()
-
- def enable_rx(self, value):
- if value:
- self._mode |= bmFR_MODE_RX
- self._write_mode()
- self._rcvr.start()
- self._receiving = True
- else:
- self._rcvr.stop()
- self._mode &= ~bmFR_MODE_RX
- self._write_mode()
- self._receiving = False
-
- def set_loopback(self, value):
- if value:
- if self._verbose:
- print "Enabling digital loopback."
- self._mode |= bmFR_MODE_LP
- else:
- if self._verbose:
- print "Disabling digital loopback."
- self._mode &= ~bmFR_MODE_LP
- self._write_mode()
-
- def set_reset(self, value):
- if value:
- if self._debug:
- print "Asserting reset."
- self._mode |= bmFR_MODE_RESET
- else:
- if self._debug:
- print "De-asserting reset."
- self._mode &= ~bmFR_MODE_RESET
- self._write_mode()
-
- def start(self):
- if self._transmit:
- self.enable_tx(True)
- if self._receive:
- self.enable_rx(True)
-
- def __del__(self):
- if self._transmitting:
- self.enable_tx(False)
-
- if self._receiving:
- self.enable_rx(False)
-
generated by cgit (git 2.34.1) at 2024-12-21 14:00:19 +0000