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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# Virtual Um-interface (fake transceiver)
# CTRL interface implementation (OsmocomBB 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 CTRLInterfaceBB(CTRLInterface):
# Internal state variables
trx_started = False
burst_fwd = None
rx_freq = None
tx_freq = None
pm = None
def __init__(self, remote_addr, remote_port, bind_port):
print("[i] Init CTRL interface for BB")
CTRLInterface.__init__(self, remote_addr, remote_port, bind_port)
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
return 0
elif self.verify_cmd(request, "POWEROFF", 0):
print("[i] Recv POWEROFF cmd")
print("[i] Stopping transceiver...")
self.trx_started = False
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
self.burst_fwd.bb_freq = self.rx_freq
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
return 0
# Power measurement
elif self.verify_cmd(request, "MEASURE", 1):
print("[i] Recv MEASURE cmd")
if self.pm is None:
return -1
# TODO: check freq range
meas_freq = int(request[1]) * 1000
meas_dbm = str(self.pm.measure(meas_freq))
return (0, [meas_dbm])
elif self.verify_cmd(request, "SETSLOT", 2):
print("[i] Recv SETSLOT cmd")
if self.burst_fwd is None:
return -1
# Obtain TS index
ts = int(request[1])
if ts not in range(0, 8):
print("[!] TS index should be in range: 0..7")
return -1
# Parse TS type
ts_type = int(request[2])
# TS activation / deactivation
# We don't care about ts_type
if ts_type == 0:
self.burst_fwd.ts_pass = None
else:
self.burst_fwd.ts_pass = ts
return 0
# Timing Advance
elif self.verify_cmd(request, "SETTA", 1):
print("[i] Recv SETTA cmd")
# Parse and check TA value
ta = int(request[1])
if ta < 0 or ta > 63:
print("[!] TA value should be in range: 0..63")
return -1
# Save to the BurstForwarder instance
self.burst_fwd.ta = ta
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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