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Some transceivers (e.g. OsmoTRX) have inherited a rudiment from
OpenBTS - two dummy bytes at the end of TRX2L1 messages. Despite
they are absolutely useless, some L1 implementations, such as
trxcon and OpenBTS, still do expect them when checking
the message length.
Let's add an optional (disabled by default) argument to gen_msg(),
that would enable adding those two dummy bytes.
Change-Id: I0cf1314c399411886420176704cadd6e6d84787f
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The built-in struct module is already used for toa256 decoding,
so let's use it for toa256 encoding, and TDMA frame number
coding too - no need to (re)implement the wheel!
Change-Id: I10d2e15ac57a0524e9bc1c80ed6a0f6f5a263436
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There are multiple advantages of using Python's logging module:
- advanced message formatting (file name, line number, etc.),
- multiple logging targets (e.g. stderr, file, socket),
- logging levels (e.g. DEBUG, INFO, ERROR),
- the pythonic way ;)
so, let's replace multiple print() calls by logging calls,
add use the following logging message format by default:
[%(levelname)s] %(filename)s:%(lineno)d %(message)s
Examples:
[INFO] ctrl_if_bts.py:57 Starting transceiver...
[DEBUG] clck_gen.py:87 IND CLOCK 26826
[DEBUG] ctrl_if_bts.py:71 Recv POWEROFF cmd
[INFO] ctrl_if_bts.py:73 Stopping transceiver...
[INFO] fake_trx.py:127 Shutting down...
Please note that there is no way to filter messages by logging
level yet. This is to be introduced soon, together with argparse.
Change-Id: I7fcafabafe8323b58990997a47afdd48b6d1f357
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This toolkit has branched out into several different tools for
TRX interface hacking, and creating a virtual Um-interface
(FakeTRX) is only one of its potential applications.
Change-Id: I56bcbc76b9c273d6b469a2bb68ddc46f3980e835
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