170 lines
4.1 KiB
Python
170 lines
4.1 KiB
Python
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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# GR-GSM based transceiver
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# CTRL interface for OsmocomBB
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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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import grgsm
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from ctrl_if import ctrl_if
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class ctrl_if_bb(ctrl_if):
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def __init__(self, remote_addr, remote_port, bind_port, tb, pm):
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print("[i] Init CTRL interface")
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ctrl_if.__init__(self, remote_addr, remote_port, bind_port)
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# Set link to the follow graph (top block)
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self.tb = tb
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# Power measurement
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self.pm = pm
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def shutdown(self):
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print("[i] Shutdown CTRL interface")
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ctrl_if.shutdown(self)
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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.tb.trx_started:
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print("[!] Transceiver already started")
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return -1
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print("[i] Starting transceiver...")
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self.tb.trx_started = True
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self.tb.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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# TODO: flush all buffers between blocks
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if self.tb.trx_started:
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print("[i] Stopping transceiver...")
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self.tb.trx_started = False
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self.tb.set_ta(0)
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self.tb.stop()
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self.tb.wait()
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return 0
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# Gain control
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elif self.verify_cmd(request, "SETRXGAIN", 1):
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print("[i] Recv SETRXGAIN cmd")
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# TODO: check gain value
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gain = int(request[1])
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self.tb.set_rx_gain(gain)
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return 0
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elif self.verify_cmd(request, "SETTXGAIN", 1):
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print("[i] Recv SETTXGAIN cmd")
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# TODO: check gain value
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gain = int(request[1])
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self.tb.set_tx_gain(gain)
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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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freq = int(request[1]) * 1000
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self.tb.set_rx_freq(freq)
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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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freq = int(request[1]) * 1000
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self.tb.set_tx_freq(freq)
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return 0
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# Timeslot management
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elif self.verify_cmd(request, "SETSLOT", 2):
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print("[i] Recv SETSLOT cmd")
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# Obtain TS index
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tn = int(request[1])
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if tn not in range(0, 8):
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print("[!] TS index should be in range: 0..7")
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return -1
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# Ignore timeslot type for now
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config = int(request[2])
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print("[i] Configure timeslot filter to: %s"
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% ("drop all" if config == 0 else "TS %d" % tn))
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if config == 0:
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# Value 0 means 'drop all'
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self.tb.ts_filter.set_policy(
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grgsm.FILTER_POLICY_DROP_ALL)
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else:
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self.tb.ts_filter.set_policy(
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grgsm.FILTER_POLICY_DEFAULT)
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self.tb.ts_filter.set_tn(tn)
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return 0
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# Power measurement
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elif self.verify_cmd(request, "MEASURE", 1):
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print("[i] Recv MEASURE cmd")
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# TODO: check freq range
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meas_freq = int(request[1]) * 1000
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# HACK: send fake low power values
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# until actual power measurement is implemented
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meas_dbm = str(self.pm.measure(meas_freq))
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return (0, [meas_dbm])
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# Timing Advance control
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elif self.verify_cmd(request, "SETTA", 1):
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print("[i] Recv SETTA cmd")
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# Check TA range
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ta = int(request[1])
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if ta < 0 or ta > 63:
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print("[!] TA value must be in range: 0..63")
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return -1
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self.tb.set_ta(ta)
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return 0
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# Misc
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elif self.verify_cmd(request, "ECHO", 0):
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print("[i] Recv ECHO cmd")
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return 0
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# Wrong / unknown command
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else:
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print("[!] Wrong request on CTRL interface")
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return -1
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