127 lines
3.4 KiB
Python
127 lines
3.4 KiB
Python
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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# TRX Toolkit
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# CTRL interface implementation (OsmoBTS specific)
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#
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# (C) 2016-2017 by Vadim Yanitskiy <axilirator@gmail.com>
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#
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# All Rights Reserved
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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from ctrl_if import CTRLInterface
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class CTRLInterfaceBTS(CTRLInterface):
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# Internal state variables
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trx_started = False
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burst_fwd = None
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clck_gen = None
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rx_freq = None
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tx_freq = None
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pm = None
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def __init__(self, remote_addr, remote_port, bind_addr, bind_port):
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CTRLInterface.__init__(self, remote_addr, remote_port, bind_addr, bind_port)
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print("[i] Init CTRL interface for BTS (%s)" % self.desc_link())
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def parse_cmd(self, request):
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# Power control
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if self.verify_cmd(request, "POWERON", 0):
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print("[i] Recv POWERON CMD")
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# Ensure transceiver isn't working
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if self.trx_started:
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print("[!] Transceiver already started")
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return -1
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# Ensure RX / TX freq. are set
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if (self.rx_freq is None) or (self.tx_freq is None):
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print("[!] RX / TX freq. are not set")
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return -1
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print("[i] Starting transceiver...")
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self.trx_started = True
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# Power emulation
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if self.pm is not None:
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self.pm.add_bts_list([self.tx_freq])
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# Start clock indications
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if self.clck_gen is not None:
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self.clck_gen.start()
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return 0
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elif self.verify_cmd(request, "POWEROFF", 0):
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print("[i] Recv POWEROFF cmd")
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print("[i] Stopping transceiver...")
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self.trx_started = False
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# Power emulation
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if self.pm is not None:
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self.pm.del_bts_list([self.tx_freq])
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# Stop clock indications
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if self.clck_gen is not None:
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self.clck_gen.stop()
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return 0
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# Tuning Control
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elif self.verify_cmd(request, "RXTUNE", 1):
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print("[i] Recv RXTUNE cmd")
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# TODO: check freq range
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self.rx_freq = int(request[1]) * 1000
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return 0
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elif self.verify_cmd(request, "TXTUNE", 1):
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print("[i] Recv TXTUNE cmd")
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# TODO: check freq range
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self.tx_freq = int(request[1]) * 1000
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self.burst_fwd.bts_freq = self.tx_freq
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return 0
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# Timing of Arrival simulation for Downlink
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# Absolute form: CMD FAKE_TOA <BASE> <THRESH>
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elif self.verify_cmd(request, "FAKE_TOA", 2):
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print("[i] Recv FAKE_TOA cmd")
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# Parse and apply both base and threshold
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self.burst_fwd.toa256_dl_base = int(request[1])
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self.burst_fwd.toa256_dl_threshold = int(request[2])
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return 0
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# Timing of Arrival simulation for Downlink
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# Relative form: CMD FAKE_TOA <+-BASE_DELTA>
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elif self.verify_cmd(request, "FAKE_TOA", 1):
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print("[i] Recv FAKE_TOA cmd")
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# Parse and apply delta
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self.burst_fwd.toa256_dl_base += int(request[1])
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return 0
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# Wrong / unknown command
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else:
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# We don't care about other commands,
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# so let's merely ignore them ;)
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print("[i] Ignore CMD %s" % request[0])
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return 0
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