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authorPiotr Krysik <perper@o2.pl>2009-06-30 23:03:33 +0200
committerPiotr Krysik <perper@o2.pl>2009-06-30 23:03:33 +0200
commit8d2bc49fb9e0c9a5fbd75aa3cad207608e72bf99 (patch)
treea32fdcd2e8e2b16cc725045d049ed94b3f675956 /gsm-receiver/src/python
parent8f97a59b21fd8d3ecd111ee770932d852e625d52 (diff)
moved gsm-receiver into directory - preparation to move to airprobe
Diffstat (limited to 'gsm-receiver/src/python')
-rw-r--r--gsm-receiver/src/python/Makefile.am24
-rwxr-xr-xgsm-receiver/src/python/capture.sh45
-rw-r--r--gsm-receiver/src/python/cfilebin0 -> 640000 bytes
-rwxr-xr-xgsm-receiver/src/python/go.sh12
-rwxr-xr-xgsm-receiver/src/python/gsm_receive.py117
-rwxr-xr-xgsm-receiver/src/python/gsm_receive_usrp.py141
-rwxr-xr-xgsm-receiver/src/python/test.sh16
7 files changed, 355 insertions, 0 deletions
diff --git a/gsm-receiver/src/python/Makefile.am b/gsm-receiver/src/python/Makefile.am
new file mode 100644
index 0000000..9a4befd
--- /dev/null
+++ b/gsm-receiver/src/python/Makefile.am
@@ -0,0 +1,24 @@
+#
+# 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.
+#
+
+include $(top_srcdir)/Makefile.common
+
+EXTRA_DIST = gsm_findfcch.py gsm_findfcch_usrp.py
diff --git a/gsm-receiver/src/python/capture.sh b/gsm-receiver/src/python/capture.sh
new file mode 100755
index 0000000..ef205d8
--- /dev/null
+++ b/gsm-receiver/src/python/capture.sh
@@ -0,0 +1,45 @@
+#! /bin/sh
+
+if [ $1"x" = x ]; then
+ echo "./capture.sh <freq> [duration==10] [decim==112] [gain==52]"
+ echo "Example: ./capture.sh 940.4M"
+ exit 1
+fi
+FREQ=$1
+
+DURATION=$2
+if [ $2"x" = x ]; then
+ DURATION=10
+fi
+DECIM=$3
+if [ $3"x" = x ]; then
+ DECIM=112
+fi
+
+GAIN=$4
+if [ $4"x" = x ]; then
+ GAIN=52
+fi
+
+
+USRP_PROG=usrp_rx_cfile.py
+while :; do
+ which "$USRP_PROG"
+ if [ $? -eq 0 ]; then
+ break
+ fi
+ USRP_PROG=/usr/share/gnuradio/usrp/usrp_rx_cfile.py
+ which "$USRP_PROG"
+ if [ $? -eq 0 ]; then
+ break
+ fi
+
+ echo "ERROR: usrp_rx_cfile.py not found. Make sure it's in your PATH!"
+ exit 1
+done
+
+FILE="capture_${FREQ}_${DECIM}.cfile"
+samples=`expr 64000000 / $DECIM '*' $DURATION`
+echo "Capturing for $DURATION seconds to $FILE ($samples samples)"
+$USRP_PROG -g $GAIN -d "$DECIM" -f "$FREQ" -N $samples $FILE
+
diff --git a/gsm-receiver/src/python/cfile b/gsm-receiver/src/python/cfile
new file mode 100644
index 0000000..943e35f
--- /dev/null
+++ b/gsm-receiver/src/python/cfile
Binary files differ
diff --git a/gsm-receiver/src/python/go.sh b/gsm-receiver/src/python/go.sh
new file mode 100755
index 0000000..e0d1290
--- /dev/null
+++ b/gsm-receiver/src/python/go.sh
@@ -0,0 +1,12 @@
+#! /bin/sh
+
+#echo "go.sh <file.cfile> [decim==112]"
+
+DECIM=$2
+FILE=$1
+
+if [ $DECIM"x" = x ]; then
+ DECIM=112
+fi
+
+./gsm_receive.py -d "$DECIM" -I "$FILE" | ../../../gsmdecode/src/gsmdecode -i
diff --git a/gsm-receiver/src/python/gsm_receive.py b/gsm-receiver/src/python/gsm_receive.py
new file mode 100755
index 0000000..4cfb876
--- /dev/null
+++ b/gsm-receiver/src/python/gsm_receive.py
@@ -0,0 +1,117 @@
+#!/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','../..debug/src/lib/decoder/openbts/SIP']:
+ 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 = 64e6
+ 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())
+ 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="2B 08 74 9F DD 0D 9C 00",
+ help="KC session key")
+
+ (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()
diff --git a/gsm-receiver/src/python/gsm_receive_usrp.py b/gsm-receiver/src/python/gsm_receive_usrp.py
new file mode 100755
index 0000000..a4e9720
--- /dev/null
+++ b/gsm-receiver/src/python/gsm_receive_usrp.py
@@ -0,0 +1,141 @@
+#!/usr/bin/env python
+#this file isn't ready to use now - gsm-receiver lacks realtime processing capability
+#there are many underruns of buffer for samples from usrp's, many blocks of samples get lost and
+#receiver isn't prepared for this situation too well
+
+from gnuradio import gr, gru, blks2
+#, gsm
+from gnuradio import usrp
+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']:
+ if extdir not in sys.path:
+ sys.path.append(extdir)
+import gsm
+
+def pick_subdevice(u):
+ if u.db[0][0].dbid() >= 0:
+ return (0, 0)
+ if u.db[1][0].dbid() >= 0:
+ return (1, 0)
+ return (0, 0)
+
+class tune(gr.feval_dd):
+ def __init__(self, top_block):
+ gr.feval_dd.__init__(self)
+ self.top_block = top_block
+ # self.center_freq = 0
+ def eval(self, freq_offet):
+ # self.center_freq = self.center_freq - freq_offet
+ self.top_block.set_frequency(freq_offet)
+ 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.tune_callback = tune(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):
+ options = self.options
+ fusb_block_size = gr.prefs().get_long('fusb', 'block_size', 4096)
+ fusb_nblocks = gr.prefs().get_long('fusb', 'nblocks', 16)
+ self.usrp = usrp.source_c(decim_rate=options.decim, fusb_block_size=fusb_block_size, fusb_nblocks=fusb_nblocks)
+
+ if options.rx_subdev_spec is None:
+ options.rx_subdev_spec = pick_subdevice(self.usrp)
+
+ self.usrp.set_mux(usrp.determine_rx_mux_value(self.usrp, options.rx_subdev_spec))
+ # determine the daughterboard subdevice
+ self.subdev = usrp.selected_subdev(self.usrp, options.rx_subdev_spec)
+ input_rate = self.usrp.adc_freq() / self.usrp.decim_rate()
+
+ # set initial values
+ if options.gain is None:
+ # if no gain was specified, use the mid-point in dB
+ g = self.subdev.gain_range()
+ options.gain = float(g[0]+g[1])/2
+
+ r = self.usrp.tune(0, self.subdev, options.freq)
+ self.subdev.set_gain(options.gain)
+ return self.usrp
+
+ def _set_rates(self):
+ options = self.options
+ clock_rate = 64e6
+ 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.tune_callback, self.options.osr)
+ 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("-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("-R", "--rx-subdev-spec", type="subdev", default=None,
+ help="Select USRP Rx side A or B (default=first one with a daughterboard)")
+ parser.add_option("-r", "--osr", type="int", default=4,
+ help="Oversampling ratio [default=%default]")
+ parser.add_option("-f", "--freq", type="eng_float", default="950.4M",
+ 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)")
+ (options, args) = parser.parse_args ()
+ return (options, args)
+
+ def set_frequency(self, center_freq):
+ self.filtr.set_center_freq(center_freq)
+
+def main():
+ try:
+ gsm_receiver_first_blood().run()
+ except KeyboardInterrupt:
+ pass
+
+if __name__ == '__main__':
+ main()
+
+
diff --git a/gsm-receiver/src/python/test.sh b/gsm-receiver/src/python/test.sh
new file mode 100755
index 0000000..0a828e9
--- /dev/null
+++ b/gsm-receiver/src/python/test.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+./gsm_receive.py -I cfile > receiver-test.out 2> /dev/null
+echo " 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b\n 15 06 21 00 01 00 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b" > receiver-comp.out
+diff receiver-test.out receiver-comp.out > receiver-test-diff.out
+test_result=`cat receiver-test-diff.out`
+
+rm receiver-test.out receiver-test-diff.out receiver-comp.out
+
+if [ "x$test_result" = "x" ]; then
+ echo "Test: passed"
+ exit 0
+else
+ echo "Test: failed"
+ exit 1
+fi
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