1 files changed, 139 insertions, 0 deletions
diff --git a/gnuradio-examples/python/gmsk2/tx_voice.py b/gnuradio-examples/python/gmsk2/tx_voice.py
new file mode 100755
index 0000000000..9e274e5e09
--- /dev/null
+++ b/gnuradio-examples/python/gmsk2/tx_voice.py
@@ -0,0 +1,139 @@
+#!/usr/bin/env python
+#
+# Copyright 2005 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., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+# 
+
+from gnuradio import gr, gru, blks
+from gnuradio import usrp
+from gnuradio import audio
+from gnuradio import eng_notation
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+
+from gnuradio.vocoder import gsm_full_rate
+
+import random
+import time
+import struct
+import sys
+
+# from current dir
+from transmit_path import transmit_path
+
+#import os
+#print os.getpid()
+#raw_input('Attach and press enter')
+
+
+class my_graph(gr.flow_graph):
+
+    def __init__(self, tx_subdev_spec, bitrate, interp_rate, spb, bt):
+        gr.flow_graph.__init__(self)
+        self.txpath = transmit_path(self, tx_subdev_spec, bitrate, interp_rate, spb, bt)
+
+        audio_input = ""
+        sample_rate = 8000
+        src = audio.source(sample_rate, audio_input)
+        src_scale = gr.multiply_const_ff(32767)
+        f2s = gr.float_to_short()
+        voice_coder = gsm_full_rate.encode_sp()
+        self.packets_from_encoder = gr.msg_queue()
+        packet_sink = gr.message_sink(33, self.packets_from_encoder, False)
+        self.connect(src, src_scale, f2s, voice_coder, packet_sink)
+
+
+
+# /////////////////////////////////////////////////////////////////////////////
+#                                   main
+# /////////////////////////////////////////////////////////////////////////////
+
+def main():
+
+    def send_pkt(payload='', eof=False):
+        return fg.txpath.send_pkt(payload, eof)
+
+    def rx_callback(ok, payload):
+        print "ok = %r, payload = '%s'" % (ok, payload)
+
+    parser = OptionParser (option_class=eng_option)
+    parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=None,
+                      help="select USRP Tx side A or B")
+    parser.add_option("-f", "--freq", type="eng_float", default=423.1e6,
+                       help="set Tx and Rx frequency to FREQ [default=%default]", metavar="FREQ")
+    parser.add_option("-r", "--bitrate", type="eng_float", default=100e3,
+                      help="specify bitrate.  spb and interp will be derived.")
+    parser.add_option("-S", "--spb", type="int", default=None, help="set samples/baud [default=%default]")
+    parser.add_option("-i", "--interp", type="intx", default=None,
+                      help="set fpga interpolation rate to INTERP [default=%default]")
+    parser.add_option("-s", "--size", type="eng_float", default=1500,
+                      help="set packet size [default=%default]")
+    parser.add_option("", "--bt", type="float", default=0.3, help="set bandwidth-time product [default=%default]")
+    parser.add_option("-M", "--megabytes", type="eng_float", default=1.0,
+                      help="set megabytes to transmit [default=%default]")
+    parser.add_option("","--discontinuous", action="store_true", default=False,
+                      help="enable discontinous transmission (bursts of 5 packets)")
+    (options, args) = parser.parse_args ()
+
+    if len(args) != 0:
+        parser.print_help()
+        sys.exit(1)
+
+    if options.freq < 1e6:
+        options.freq *= 1e6
+
+    pkt_size = int(options.size)
+
+    # build the graph
+    fg = my_graph(options.tx_subdev_spec, options.bitrate, options.interp,
+                  options.spb, options.bt)
+
+    print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.txpath.bitrate()),)
+    print "spb:     %3d" % (fg.txpath.spb(),)
+    print "interp:  %3d" % (fg.txpath.interp(),)
+
+    fg.txpath.set_freq(options.freq)
+
+    fg.start()                       # start flow graph
+
+    # generate and send packets
+    nbytes = int(1e6 * options.megabytes)
+    n = 0
+    pktno = 0
+
+    while n < nbytes:
+        packet = fg.packets_from_encoder.delete_head()
+        s = packet.to_string()
+        send_pkt(s)
+        n += len(s)
+        sys.stderr.write('.')
+        if options.discontinuous and pktno % 5 == 4:
+            time.sleep(1)
+        pktno += 1
+        
+    send_pkt(eof=True)
+    fg.wait()                       # wait for it to finish
+    fg.txpath.set_auto_tr(False)
+
+
+if __name__ == '__main__':
+    try:
+        main()
+    except KeyboardInterrupt:
+        pass