diff options
Diffstat (limited to 'gr-sounder/src/python/usrp_sounder.py')
| -rwxr-xr-x | gr-sounder/src/python/usrp_sounder.py | 198 |
1 files changed, 53 insertions, 145 deletions
diff --git a/gr-sounder/src/python/usrp_sounder.py b/gr-sounder/src/python/usrp_sounder.py index 31e766ef5..4aada45d6 100755 --- a/gr-sounder/src/python/usrp_sounder.py +++ b/gr-sounder/src/python/usrp_sounder.py @@ -20,174 +20,82 @@ # Boston, MA 02110-1301, USA. # -from gnuradio import gr, usrp +from gnuradio import gr +from gnuradio.sounder import sounder from gnuradio import eng_notation from gnuradio.eng_option import eng_option from optparse import OptionParser -import sys, time +import sys 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 - -class sounder: - def __init__(self, options): - self._options = options - self._mode = 0 - - self._u = None - self._trans = None - self._rcvr = None - self._transmitting = False - self._receiving = False - - if options.transmit: - print "Creating sounder transmitter." - self._trans = usrp.sink_s(fpga_filename='usrp_sounder.rbf') - self._trans_subdev_spec = usrp.pick_tx_subdevice(self._trans) - self._trans_subdev = usrp.selected_subdev(self._trans, self._trans_subdev_spec) - self._trans.start() - self._u = self._trans - - if options.receive: - print "Creating sounder receiver." - self._fg = gr.flow_graph() - self._rcvr = usrp.source_s(fpga_filename='usrp_sounder.rbf', decim_rate=128) - self._rcvr_subdev_spec = usrp.pick_rx_subdevice(self._rcvr) - self._rcvr_subdev = usrp.selected_subdev(self._rcvr, self._rcvr_subdev_spec) - self._sink = gr.file_sink(gr.sizeof_short, "output.dat") - - if options.samples >= 0: - self._head = gr.head(gr.sizeof_short, options.samples*gr.sizeof_short) - self._fg.connect(self._rcvr, self._head, self._sink) - else: - self._fg.connect(self._rcvr, self._sink) - self._u = self._rcvr # either receiver or transmitter object will do - - self.set_reset(True) - self.set_freq(options.frequency) - self.set_degree(options.degree) - self.set_loopback(options.loopback) - self.set_reset(False) - - def set_freq(self, frequency): - print "Setting center frequency to", n2s(frequency) - if self._rcvr: - self._rcvr.tune(0, self._rcvr_subdev, frequency) - - if self._trans: - self._trans.tune(0, self._trans_subdev, frequency) - - def set_degree(self, degree): - print "Setting PN code degree to", degree - self._u._write_fpga_reg(FR_DEGREE, degree); - - def _write_mode(self): - print "Writing mode register with:", hex(self._mode) - self._u._write_fpga_reg(FR_MODE, self._mode) - - def enable_tx(self, value): - if value: - print "Enabling transmitter." - self._mode |= bmFR_MODE_TX - self._transmitting = True - else: - print "Disabling transmitter." - self._mode &= ~bmFR_MODE_TX - self._write_mode() - - def enable_rx(self, value): - if value: - print "Starting receiver flow graph." - self._mode |= bmFR_MODE_RX - self._write_mode() - self._fg.start() - self._receiving = True - if self._options.samples >= 0: - self._fg.wait() - else: - print "Stopping receiver flow graph." - if self._options.samples < 0: - self._fg.stop() - print "Waiting for threads..." - self._fg.wait() - print "Receiver flow graph stopped." - self._mode &= ~bmFR_MODE_RX - self._write_mode() - self._receiving = False - - def set_loopback(self, value): - if value: - print "Enabling digital loopback." - self._mode |= bmFR_MODE_LP - else: - print "Disabling digital loopback." - self._mode &= ~bmFR_MODE_LP - self._write_mode() - - def set_reset(self, value): - if value: - print "Asserting reset." - self._mode |= bmFR_MODE_RESET - else: - print "De-asserting reset." - self._mode &= ~bmFR_MODE_RESET - self._write_mode() - - def __del__(self): - if self._transmitting: - self.enable_tx(False) - - if self._receiving: - self.enable_rx(False) - -# ------------------------------------------------------------------------------ - def main(): parser = OptionParser(option_class=eng_option) + parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=(0, 0), + help="select USRP Rx side A or B") parser.add_option("-f", "--frequency", type="eng_float", default=0.0, help="set frequency to FREQ in Hz, default is %default", metavar="FREQ") - - parser.add_option("-d", "--degree", type="int", default=16, - help="set souding sequence degree (len=2^degree-1), default is %default") - + parser.add_option("-d", "--degree", type="int", default=12, + help="set sounding sequence degree (2-12), default is %default,") parser.add_option("-t", "--transmit", action="store_true", default=False, help="enable sounding transmitter") - parser.add_option("-r", "--receive", action="store_true", default=False, help="enable sounding receiver") - - parser.add_option("-n", "--samples", type="int", default=-1, - help="number of samples to capture on receive, default is infinite") - parser.add_option("-l", "--loopback", action="store_true", default=False, help="enable digital loopback, default is disabled") - + parser.add_option("-v", "--verbose", action="store_true", default=False, + help="enable verbose output, default is disabled") + parser.add_option("-D", "--debug", action="store_true", default=False, + help="enable debugging output, default is disabled") + parser.add_option("-F", "--filename", default=None, + help="log received impulse responses to file") + (options, args) = parser.parse_args() if len(args) != 0 or not (options.transmit | options.receive): parser.print_help() sys.exit(1) - print "Using PN code degree of", options.degree, "length", 2**options.degree-1 - print "Sounding frequency range is", n2s(options.frequency-16e6), "to", n2s(options.frequency+16e6) - - s = sounder(options) - - if options.transmit: - s.enable_tx(True) + if options.receive and (options.filename == None): + print "Must supply filename when receiving." + sys.exit(1) + + if options.degree > 12 or options.degree < 2: + print "PN code degree must be between 2 and 12" + sys.exit(1) + + length = int(2**options.degree-1) + if options.verbose: + print "Using PN code degree of", options.degree, "length", length + if options.loopback == False: + print "Sounding frequency range is", n2s(options.frequency-16e6), "to", n2s(options.frequency+16e6) + if options.filename != None: + print "Logging impulse records to file: ", options.filename + + msgq = gr.msg_queue() + s = sounder(transmit=options.transmit,receive=options.receive,loopback=options.loopback, + rx_subdev_spec=options.rx_subdev_spec,frequency=options.frequency,degree=options.degree, + length=length,msgq=msgq,verbose=options.verbose,debug=options.debug) + s.start() if options.receive: - s.enable_rx(True) - - if options.samples < 0: - raw_input("Press enter to exit.") - + f = open(options.filename, "wb") + print "Enter CTRL-C to stop." + try: + while (1): + msg = msgq.delete_head() + if msg.type() == 1: + break + rec = msg.to_string()[:length*gr.sizeof_gr_complex] + if options.debug: + print "Received impulse vector of length", len(rec) + f.write(rec) + + except KeyboardInterrupt: + pass + else: + if options.transmit: + raw_input("Press return to exit.") + if __name__ == "__main__": main() |