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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# TRX Toolkit
# CTRL interface implementation (common commands)
#
# (C) 2016-2018 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 logging as log
from ctrl_if import CTRLInterface
class CTRLInterfaceTRX(CTRLInterface):
""" CTRL interface handler for common transceiver management commands.
The following set of commands is mandatory for every transceiver:
- POWERON / POWEROFF - state management (running / idle),
- RXTUNE / TXTUNE - RX / TX frequency management,
- SETSLOT - timeslot management.
Additionally, there is an optional MEASURE command, which is used
by OsmocomBB to perform power measurement on a given frequency.
A given transceiver may also define its own command handler,
that is prioritized, i.e. it can overwrite any commands mentioned
above. If None is returned, a command is considered as unhandled.
"""
def __init__(self, trx, *udp_link_args):
CTRLInterface.__init__(self, *udp_link_args)
# Link with Transceiver instance we belong to
self.trx = trx
def parse_cmd(self, request):
# Custom command handlers (prioritized)
res = self.trx.ctrl_cmd_handler(request)
if res is not None:
return res
# Power control
if self.verify_cmd(request, "POWERON", 0):
log.debug("(%s) Recv POWERON CMD" % self.trx)
# Ensure transceiver isn't working
if self.trx.running:
log.error("(%s) Transceiver already started" % self.trx)
return -1
# Ensure RX / TX freq. are set
if (self.trx.rx_freq is None) or (self.trx.tx_freq is None):
log.error("(%s) RX / TX freq. are not set" % self.trx)
return -1
log.info("(%s) Starting transceiver..." % self.trx)
self.trx.running = True
# Notify transceiver about that
self.trx.power_event_handler("POWERON")
return 0
elif self.verify_cmd(request, "POWEROFF", 0):
log.debug("(%s) Recv POWEROFF cmd" % self.trx)
log.info("(%s) Stopping transceiver..." % self.trx)
self.trx.running = False
# Notify transceiver about that
self.trx.power_event_handler("POWEROFF")
return 0
# Tuning Control
elif self.verify_cmd(request, "RXTUNE", 1):
log.debug("(%s) Recv RXTUNE cmd" % self.trx)
# TODO: check freq range
self.trx.rx_freq = int(request[1]) * 1000
return 0
elif self.verify_cmd(request, "TXTUNE", 1):
log.debug("(%s) Recv TXTUNE cmd" % self.trx)
# TODO: check freq range
self.trx.tx_freq = int(request[1]) * 1000
return 0
elif self.verify_cmd(request, "SETSLOT", 2):
log.debug("(%s) Recv SETSLOT cmd" % self.trx)
# Obtain TS index
ts = int(request[1])
if ts not in range(0, 8):
log.error("(%s) TS index should be in "
"range: 0..7" % self.trx)
return -1
# Parse TS type
ts_type = int(request[2])
# TS activation / deactivation
# We don't care about ts_type
if ts_type == 0:
# Deactivate TS (remove from the list of active timeslots)
if ts in self.trx.ts_list:
self.trx.ts_list.remove(ts)
else:
# Activate TS (add to the list of active timeslots)
if ts not in self.trx.ts_list:
self.trx.ts_list.append(ts)
return 0
# Power measurement
if self.verify_cmd(request, "MEASURE", 1):
log.debug("(%s) Recv MEASURE cmd" % self.trx)
# Power Measurement interface is optional
# for Transceiver, thus may be uninitialized
if self.trx.pwr_meas is None:
log.error("(%s) Power Measurement interface is not "
"initialized => rejecting command" % self.trx)
return -1
# TODO: check freq range
meas_freq = int(request[1]) * 1000
meas_dbm = self.trx.pwr_meas.measure(meas_freq)
return (0, [str(meas_dbm)])
# Wrong / unknown command
else:
# We don't care about other commands,
# so let's merely ignore them ;)
log.debug("(%s) Ignore CMD %s" % (self.trx, request[0]))
return 0
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