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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# TRX Toolkit
# CTRL interface implementation (OsmoBTS specific)
#
# (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.
from ctrl_if import CTRLInterface
class CTRLInterfaceBTS(CTRLInterface):
# Internal state variables
trx_started = False
burst_fwd = None
clck_gen = None
rx_freq = None
tx_freq = None
pm = None
def __init__(self, remote_addr, remote_port, bind_addr, bind_port):
CTRLInterface.__init__(self, remote_addr, remote_port, bind_addr, bind_port)
print("[i] Init CTRL interface for BTS (%s)" % self.desc_link())
def parse_cmd(self, request):
# Power control
if self.verify_cmd(request, "POWERON", 0):
print("[i] Recv POWERON CMD")
# Ensure transceiver isn't working
if self.trx_started:
print("[!] Transceiver already started")
return -1
# Ensure RX / TX freq. are set
if (self.rx_freq is None) or (self.tx_freq is None):
print("[!] RX / TX freq. are not set")
return -1
print("[i] Starting transceiver...")
self.trx_started = True
# Power emulation
if self.pm is not None:
self.pm.add_bts_list([self.tx_freq])
# Start clock indications
if self.clck_gen is not None:
self.clck_gen.start()
return 0
elif self.verify_cmd(request, "POWEROFF", 0):
print("[i] Recv POWEROFF cmd")
print("[i] Stopping transceiver...")
self.trx_started = False
# Power emulation
if self.pm is not None:
self.pm.del_bts_list([self.tx_freq])
# Stop clock indications
if self.clck_gen is not None:
self.clck_gen.stop()
return 0
# Tuning Control
elif self.verify_cmd(request, "RXTUNE", 1):
print("[i] Recv RXTUNE cmd")
# TODO: check freq range
self.rx_freq = int(request[1]) * 1000
return 0
elif self.verify_cmd(request, "TXTUNE", 1):
print("[i] Recv TXTUNE cmd")
# TODO: check freq range
self.tx_freq = int(request[1]) * 1000
self.burst_fwd.bts_freq = self.tx_freq
return 0
# Timing of Arrival simulation for Downlink
# Absolute form: CMD FAKE_TOA <BASE> <THRESH>
elif self.verify_cmd(request, "FAKE_TOA", 2):
print("[i] Recv FAKE_TOA cmd")
# Parse and apply both base and threshold
self.burst_fwd.toa256_dl_base = int(request[1])
self.burst_fwd.toa256_dl_threshold = int(request[2])
return 0
# Timing of Arrival simulation for Downlink
# Relative form: CMD FAKE_TOA <+-BASE_DELTA>
elif self.verify_cmd(request, "FAKE_TOA", 1):
print("[i] Recv FAKE_TOA cmd")
# Parse and apply delta
self.burst_fwd.toa256_dl_base += int(request[1])
return 0
# Wrong / unknown command
else:
# We don't care about other commands,
# so let's merely ignore them ;)
print("[i] Ignore CMD %s" % request[0])
return 0
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