From 9baae39b8d98a3271f03a1848c62180f129a775f Mon Sep 17 00:00:00 2001
From: Dieter Spaar <spaar@mirider.augusta.de>
Date: Thu, 29 Jul 2010 21:32:47 +0200
Subject: Add python and shell script files to run gsm-receiver on USRP2
---
gsm-receiver/src/python/go_usrp2.sh | 26 +++++++
gsm-receiver/src/python/gsm_receive100.py | 119 ++++++++++++++++++++++++++++++
2 files changed, 145 insertions(+)
create mode 100644 gsm-receiver/src/python/go_usrp2.sh
create mode 100644 gsm-receiver/src/python/gsm_receive100.py
(limited to 'gsm-receiver/src')
diff --git a/gsm-receiver/src/python/go_usrp2.sh b/gsm-receiver/src/python/go_usrp2.sh
new file mode 100644
index 0000000..707dda4
--- /dev/null
+++ b/gsm-receiver/src/python/go_usrp2.sh
@@ -0,0 +1,26 @@
+#! /bin/sh
+
+#echo "go.sh <file.cfile> [decim==174]"
+
+KEY=$4
+CONFIGURATION=$3
+DECIM=$2
+FILE=$1
+
+if [ $DECIM"x" = x ]; then
+ DECIM=174
+fi
+
+if [ $CONFIGURATION"x" = x ]; then
+ CONFIGURATION=""
+fi
+
+if [ "$KEY""x" = x ]; then
+ KEY="00 00 00 00 00 00 00 00"
+fi
+
+# Use GSMTAP with WireShark instead of gmsdecode !
+
+#./gsm_receive100.py -d "$DECIM" -I "$FILE" -c "$CONFIGURATION" -k "$KEY" | ../../../gsmdecode/src/gsmdecode -i
+
+./gsm_receive100.py -d "$DECIM" -I "$FILE" -c "$CONFIGURATION" -k "$KEY"
diff --git a/gsm-receiver/src/python/gsm_receive100.py b/gsm-receiver/src/python/gsm_receive100.py
new file mode 100644
index 0000000..d59474f
--- /dev/null
+++ b/gsm-receiver/src/python/gsm_receive100.py
@@ -0,0 +1,119 @@
+#!/usr/bin/env python
+
+from gnuradio import gr, gru, blks2
+#, gsm
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+from os import sys
+
+for extdir in ['../../debug/src/lib','../../debug/src/lib/.libs','../lib','../lib/.libs']:
+ if extdir not in sys.path:
+ sys.path.append(extdir)
+import gsm
+
+class tuner(gr.feval_dd):
+ def __init__(self, top_block):
+ gr.feval_dd.__init__(self)
+ self.top_block = top_block
+ def eval(self, freq_offet):
+ self.top_block.set_center_frequency(freq_offet)
+ return freq_offet
+
+class synchronizer(gr.feval_dd):
+ def __init__(self, top_block):
+ gr.feval_dd.__init__(self)
+ self.top_block = top_block
+
+ def eval(self, timing_offset):
+ self.top_block.set_timing(timing_offset)
+ return freq_offet
+
+class gsm_receiver_first_blood(gr.top_block):
+ def __init__(self):
+ gr.top_block.__init__(self)
+ (options, args) = self._process_options()
+ self.tuner_callback = tuner(self)
+ self.synchronizer_callback = synchronizer(self)
+ self.options = options
+ self.args = args
+ self._set_rates()
+ self.source = self._set_source()
+ self.filtr = self._set_filter()
+ self.interpolator = self._set_interpolator()
+ self.receiver = self._set_receiver()
+ self.converter = self._set_converter()
+ self.sink = self._set_sink()
+
+ self.connect(self.source, self.filtr, self.interpolator, self.receiver, self.converter, self.sink)
+
+ def _set_sink(self):
+ nazwa_pliku_wy = self.options.outputfile
+ ujscie = gr.file_sink(gr.sizeof_float, nazwa_pliku_wy)
+ return ujscie
+
+ def _set_source(self):
+ nazwa_pliku = self.options.inputfile
+ zrodlo = gr.file_source(gr.sizeof_gr_complex, nazwa_pliku, False)
+ return zrodlo
+
+ def _set_rates(self):
+ options = self.options
+ clock_rate = 100e6
+ self.clock_rate = clock_rate
+ self.input_rate = clock_rate / options.decim
+ self.gsm_symb_rate = 1625000.0 / 6.0
+ self.sps = self.input_rate / self.gsm_symb_rate / self.options.osr
+
+ def _set_filter(self):
+ filter_cutoff = 145e3
+ filter_t_width = 10e3
+ offset = 0
+# print "input_rate:", self.input_rate, "sample rate:", self.sps, " filter_cutoff:", filter_cutoff, " filter_t_width:", filter_t_width
+ filter_taps = gr.firdes.low_pass(1.0, self.input_rate, filter_cutoff, filter_t_width, gr.firdes.WIN_HAMMING)
+ filtr = gr.freq_xlating_fir_filter_ccf(1, filter_taps, offset, self.input_rate)
+ return filtr
+
+ def _set_converter(self):
+ v2s = gr.vector_to_stream(gr.sizeof_float, 142)
+ return v2s
+
+ def _set_interpolator(self):
+ interpolator = gr.fractional_interpolator_cc(0, self.sps)
+ return interpolator
+
+ def _set_receiver(self):
+ receiver = gsm.receiver_cf(self.tuner_callback, self.synchronizer_callback, self.options.osr, self.options.key.replace(' ', '').lower(), self.options.configuration.upper())
+ return receiver
+
+ def _process_options(self):
+ parser = OptionParser(option_class=eng_option)
+ parser.add_option("-d", "--decim", type="int", default=128,
+ help="Set USRP decimation rate to DECIM [default=%default]")
+ parser.add_option("-r", "--osr", type="int", default=4,
+ help="Oversampling ratio [default=%default]")
+ parser.add_option("-I", "--inputfile", type="string", default="cfile",
+ help="Input filename")
+ parser.add_option("-O", "--outputfile", type="string", default="cfile2.out",
+ help="Output filename")
+ parser.add_option("-k", "--key", type="string", default="AD 6A 3E C2 B4 42 E4 00",
+ help="KC session key")
+ parser.add_option("-c", "--configuration", type="string", default="",
+ help="Decoder configuration")
+
+ (options, args) = parser.parse_args ()
+ return (options, args)
+
+ def set_center_frequency(self, center_freq):
+ self.filtr.set_center_freq(center_freq)
+
+ def set_timing(self, timing_offset):
+ pass
+
+def main():
+ try:
+ gsm_receiver_first_blood().run()
+ except KeyboardInterrupt:
+ pass
+
+if __name__ == '__main__':
+ main()
--
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