Opened 16 years ago
Closed 16 years ago
#4202 closed defect (duplicate)
22kHz tone switches don't work with myth
| Reported by: | Owned by: | danielk | |
|---|---|---|---|
| Priority: | minor | Milestone: | unknown |
| Component: | mythtv | Version: | 0.20-fixes |
| Severity: | low | Keywords: | |
| Cc: | Ticket locked: | no |
Description
I expanded my FTA setup and ended up using a 4x4 (2 dual-LNBs in, 4 receivers out) which switches on 22kHz. Pretty standard, no tone = look at LNB A (13V) or LNB B (18V), 22kHz tone = look at LNB C (13V) or LNB D (18V).
I'm using two Twinhan 102G cards which have had no problem in the last year or so I've been playing with myth.
I originally had two DiSEqC switches after a 3x4 which would allow me to switch between the LNBs but this proved to be not as useful, hence the use of a single 4x4 now. The Twinhan had no problem with the DiSEqC gear.
It seems that both dvbtune and mythtv have the same tuning bug; they will not tell the driver to emit a continuous 22kHz tone in order to activate these types of switches.
The solution was simple: in DiSEqCDevSwitch::ExecuteTone?(), change the call from mini_diseqc() to m_tree.SetTone?(pos).
It seems to work fine: #ifdef USING_DVB
m_tree.SetTone?(pos);
if (mini_diseqc(m_tree.GetFD(), pos == 0 ? SEC_MINI_A : SEC_MINI_B))
return true;
#endif USING_DVB
The only time ExecuteTone?() is run is when the switch type is set to tone, so this couldn't have possibly worked as it is written now.
Ticket 4133 has a patch that will fix this