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'trx-calibration-path' is the new VTY command indicating the path
name where the calibration files can be found.
Calibration is only implemented for SUPERFEMTO API version 2.4.0 or
later.
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Introduce femtobts_tracef_docs with some more information about
the traceflags, add parameters to the vty_cmd_string_from_valstr
for specifying the separator, the suffix and if the name should
be lowered.
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Make the clock names lower case to match with the vty command.
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This allows us to do RF measurements (EDGE EVM and the like) even
without having any PCU/RLC/MAC code as of now.
To use it, configure PDCH type timeslots (e.g. TS 7) in the BSC and then
use "trx 0 7 activate 0" to manually activate the PDTCH lchan on top
of that timeslot. The BTS will now happily transmit EDGE/8PSK data.
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where previously we would only see
<0006> oml.c:931 (bts=0,trx=0,ts=1,ss=0) MPH-DEACTIVATE.req (FACCH/F)
we now get
<0006> oml.c:931 (bts=0,trx=0,ts=1,ss=0) MPH-DEACTIVATE.req (FACCH/F RxUL)
to notice it is modifying the receive path in the uplink direction.
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the default source is the OCXO
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Parts of the code check if GsmL1_TchPlType_Efr is defined, others
parts don't. Follow the easy route and assume it is defined.
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This code re-works osmo-bts to add support for the upcoming sysmocom BTS.
It also tries to add some level of abstraction between the generic
part of a BTS (A-bis, RSL, OML, data structures, paging scheduling,
BCCH/AGCH scheduling, etc.) and the actual hardware-specific bits.
The hardware-specific bits are currently only implemented for the sysmocom
femtobts, but should be (re-)added for osmocom-bb, as well as a virtual
BTS for simulation purpose later.
The sysmocom bts specific parts require hardware-specific header files
which are (at least currently) not publicly distributed.
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