Em 12-11-2012 11:04, Martin Rudge escreveu:
Hello All,
When using the V5 API (DVB-S/S2) for the DVB frontend device (with the
now merged SEC functionality), setting properties DTV_VOLTAGE and/or
DTV_TONE generates extra (unwanted?) events. This is due to utilising
the legacy FE_SET_FRONTEND IOCTL in their respective implementations.
Depending on their placement in one "atomic" FE_SET_PROPERTY call,
they can cause an "incorrect" (premature) SYNC/LOCK event to be
generated. For example, when looping issuing tune requests in
succession during a scan operation. This was with a fairly recent
media build (pulled Saturday).
I suspect that this is an undesirable behavior, likely there since the initial
version of DVB-S2 API. It could be too late to fix, as userspace apps may be
trusting on this behavior.
Maybe you could propose a patch and ask app developers what they thing about
it.
Conversly using DTV_CLEAR clears the cached values, but doesn't affect
the frontend (LNB). This is probably desirable behaviour.
This is desirable.
Any thoughts, working as designed/intended?
Regards,
Mauro
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