gr-gsm/apps/grgsm_trx

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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# GR-GSM based transceiver
#
# (C) 2016-2017 by Vadim Yanitskiy <axilirator@gmail.com>
#
# All Rights Reserved
#
# This program 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 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import signal
import getopt
import sys
from grgsm.trx import ctrl_if_bb
from grgsm.trx import radio_if
from grgsm.trx import fake_pm
COPYRIGHT = \
"Copyright (C) 2016-2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
"License GPLv2+: GNU GPL version 2 or later " \
"<http://gnu.org/licenses/gpl.html>\n" \
"This is free software: you are free to change and redistribute it.\n" \
"There is NO WARRANTY, to the extent permitted by law.\n"
class Application:
# Application variables
remote_addr = "127.0.0.1"
base_port = 5700
# PHY specific
phy_sample_rate = 2000000
phy_subdev_spec = False
phy_gain = 30
phy_args = ""
phy_ppm = 0
def __init__(self):
self.print_copyright()
self.parse_argv()
# Set up signal handlers
signal.signal(signal.SIGINT, self.sig_handler)
def run(self):
# Init Radio interface
self.radio = radio_if(self.phy_args, self.phy_subdev_spec,
self.phy_sample_rate, self.phy_gain, self.phy_ppm,
self.remote_addr, self.base_port)
# Power measurement emulation
# Noise: -120 .. -105
# BTS: -75 .. -50
self.pm = fake_pm(-120, -105, -75, -50)
# Init TRX CTRL interface
self.server = ctrl_if_bb(self.remote_addr,
self.base_port + 101, self.base_port + 1,
self.radio, self.pm)
print("[i] Init complete")
# Enter main loop
while True:
self.server.loop()
def shutdown(self):
print("[i] Shutting down...")
self.server.shutdown()
self.radio.shutdown()
def print_copyright(self):
print(COPYRIGHT)
def print_help(self):
s = " Usage: " + sys.argv[0] + " [options]\n\n" \
" Some help...\n" \
" -h --help this text\n\n"
# TRX specific
s += " TRX interface specific\n" \
" -s --remote-addr Set remote address (default 127.0.0.1)\n" \
" -p --base-port Set base port number (default 5700)\n\n"
# PHY specific
s += " Radio interface specific\n" \
" -a --device-args Set device arguments\n" \
" -s --sample-rate Set PHY sample rate (default 2000000)\n" \
" -S --subdev-spec Set PHY sub-device specification\n" \
" -g --gain Set PHY gain (default 30)\n" \
" --ppm Set PHY frequency correction (default 0)\n"
print(s)
def parse_argv(self):
try:
opts, args = getopt.getopt(sys.argv[1:],
"a:p:i:s:S:g:h",
["help", "remote-addr=", "base-port=", "device-args=",
"gain=", "subdev-spec=", "sample-rate=", "ppm="])
except getopt.GetoptError as err:
# Print(help and exit)
self.print_help()
print("[!] " + str(err))
sys.exit(2)
for o, v in opts:
if o in ("-h", "--help"):
self.print_help()
sys.exit(2)
# TRX specific
elif o in ("-i", "--remote-addr"):
self.remote_addr = v
elif o in ("-p", "--base-port"):
if int(v) >= 0 and int(v) <= 65535:
self.base_port = int(v)
else:
print("[!] The port number should be in range [0-65536]")
sys.exit(2)
# PHY specific
elif o in ("-a", "--device-args"):
self.phy_args = v
elif o in ("-g", "--gain"):
self.phy_gain = int(v)
elif o in ("-S", "--subdev-spec"):
self.phy_subdev_spec = v
elif o in ("-s", "--sample-rate"):
self.phy_sample_rate = int(v)
elif o in ("--ppm"):
self.phy_ppm = int(v)
def sig_handler(self, signum, frame):
print("Signal %d received" % signum)
if signum is signal.SIGINT:
self.shutdown()
sys.exit(0)
if __name__ == '__main__':
app = Application()
app.run()