From 5d69a524f81f234b3fbc41d49ba18d6f6886baba Mon Sep 17 00:00:00 2001
From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Thu, 3 Aug 2006 04:51:51 +0000
Subject: Houston, we have a trunk.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5
---
.../python/multi_usrp/multi_usrp_rx_cfile.py | 131 +++++++++++++++++++++
1 file changed, 131 insertions(+)
create mode 100755 gnuradio-examples/python/multi_usrp/multi_usrp_rx_cfile.py
(limited to 'gnuradio-examples/python/multi_usrp/multi_usrp_rx_cfile.py')
diff --git a/gnuradio-examples/python/multi_usrp/multi_usrp_rx_cfile.py b/gnuradio-examples/python/multi_usrp/multi_usrp_rx_cfile.py
new file mode 100755
index 0000000000..6084aba3d7
--- /dev/null
+++ b/gnuradio-examples/python/multi_usrp/multi_usrp_rx_cfile.py
@@ -0,0 +1,131 @@
+#!/usr/bin/env python
+
+"""
+Read samples 2 from two linked synchronised USRP's and write to file formatted as binary
+single-precision complex values.
+Make sure you read README on how to link the two usrps
+
+"""
+
+from gnuradio import gr, eng_notation
+from gnuradio import audio
+from gnuradio import usrp
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+import sys
+
+import time
+from gnuradio import usrp_multi
+
+class my_graph(gr.flow_graph):
+
+ def __init__(self):
+ gr.flow_graph.__init__(self)
+
+ usage="%prog: [options] output_filename"
+ parser = OptionParser(option_class=eng_option, usage=usage)
+ parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=(0, 0),
+ help="select USRP Rx side A or B (default=A)")
+ parser.add_option("-d", "--decim", type="int", default=128,
+ help="set selfpa decimation rate to DECIM [default=%default]")
+ parser.add_option("-f", "--freq", type="eng_float", default=0.0,
+ help="set frequency to FREQ", metavar="FREQ")
+ parser.add_option("-g", "--gain", type="eng_float", default=None,
+ help="set gain in dB (default is midpoint)")
+ parser.add_option("-n", "--nchan", type="intx", default=2,
+ help="set nchannels to NCHAN")
+ parser.add_option("-N", "--nsamples", type="eng_float", default=None,
+ help="number of samples to collect [default=+inf]")
+ parser.add_option ("-o", "--output-file-m", default="usrp_rx_m.dat",
+ help="write master data to FILE", metavar="FILE")
+ parser.add_option ("--output-file-m2", default="usrp_rx_m2.dat",
+ help="write master data from second channel to FILE", metavar="FILE")
+ parser.add_option ("-p", "--output-file-s", default="usrp_rx_s.dat",
+ help="write slave data to FILE", metavar="FILE")
+ parser.add_option ("--output-file-s2", default="usrp_rx_s2.dat",
+ help="write slave data from second channel to FILE", metavar="FILE")
+ parser.add_option("-x", "--master-serialno", type="string", default=None,
+ help="Serial_no of the usrp which should be the MASTER (default= select any)")
+ (options, args) = parser.parse_args ()
+ if len(args) != 0:
+ parser.print_help()
+ raise SystemExit, 1
+
+ if options.freq is None:
+ parser.print_help()
+ sys.stderr.write('You must specify the frequency with -f FREQ\n');
+ raise SystemExit, 1
+
+ # build the graph
+ self.multi=usrp_multi.multi_source_align( fg=self, master_serialno=options.master_serialno, decim=options.decim,
+ nchan=options.nchan )
+ self.um=self.multi.get_master_usrp()
+ self.us=self.multi.get_slave_usrp()
+
+ dst_m=gr.file_sink (gr.sizeof_gr_complex, options.output_file_m)
+ dst_s=gr.file_sink (gr.sizeof_gr_complex, options.output_file_s)
+ if options.nsamples is None:
+ self.connect((self.multi.get_master_source_c(),1),dst_m)
+ self.connect((self.multi.get_slave_source_c(),1),dst_s)
+ else:
+ head_m = gr.head(gr.sizeof_gr_complex, int(options.nsamples))
+ head_s = gr.head(gr.sizeof_gr_complex, int(options.nsamples))
+ self.connect((self.multi.get_master_source_c(),1),head_m,dst_m)
+ self.connect((self.multi.get_slave_source_c(),1),head_s,dst_s)
+
+ if(4==options.nchan):
+ dst_m2=gr.file_sink (gr.sizeof_gr_complex, options.output_file_m2)
+ dst_s2=gr.file_sink (gr.sizeof_gr_complex, options.output_file_s2)
+ if options.nsamples is None:
+ self.connect((self.multi.get_master_source_c(),2),dst_m2)
+ self.connect((self.multi.get_slave_source_c(),2),dst_s2)
+ else:
+ head_m2 = gr.head(gr.sizeof_gr_complex, int(options.nsamples))
+ head_s2 = gr.head(gr.sizeof_gr_complex, int(options.nsamples))
+ self.connect((self.multi.get_master_source_c(),2),head_m2,dst_m2)
+ self.connect((self.multi.get_slave_source_c(),2),head_s2,dst_s2)
+
+ if options.rx_subdev_spec is None:
+ options.rx_subdev_spec = usrp.pick_rx_subdevice(self.um)
+
+ if (options.nchan!=4):
+ mux=usrp.determine_rx_mux_value(self.um, options.rx_subdev_spec)
+ mux= (mux<<8 & 0xffffffff) | (mux & 0xff)
+ self.um.set_mux(mux)
+ self.us.set_mux(mux)
+
+ # determine the daughterboard subdevice we're using
+ self.subdevm = usrp.selected_subdev(self.um, options.rx_subdev_spec)
+ self.subdevs = usrp.selected_subdev(self.us, options.rx_subdev_spec)
+ print "Using MASTER RX d'board %s" % (self.subdevm.side_and_name(),)
+ print "Using SLAVE RX d'board %s" % (self.subdevs.side_and_name(),)
+ input_rate = self.um.adc_freq() / self.um.decim_rate()
+ print "USB sample rate %s" % (eng_notation.num_to_str(input_rate))
+
+ if options.gain is None:
+ # if no gain was specified, use the mid-point in dB
+ g = self.subdevm.gain_range()
+ options.gain = float(g[0]+g[1])/2
+
+ self.multi.set_gain_all_rx(options.gain)
+ result,r1,r2,r3,r4 = self.multi.tune_all_rx(options.freq)
+ if not result:
+ sys.stderr.write('Failed to set frequency\n')
+ raise SystemExit, 1
+
+ def sync_usrps(self):
+ self.multi.sync()
+
+
+if __name__ == '__main__':
+ fg=my_graph()
+ fg.start()
+ #time.sleep(0.5)
+ fg.sync_usrps()
+ raw_input ('Press Enter to quit: ')
+ fg.stop()
+ #try:
+ # fg.start()
+ # fg.sync_usrps()
+ #except KeyboardInterrupt:
+ # pass
--
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