Merge branch 'moving_to_airprobe'

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
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