[linux-dvb] Re: Full featured card summary

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Andrew de Quincey wrote:
> 
> > When I compiled the latest VDR developer version with the dvb-kernel
> > header files, everything compiled just fine - so I would assume that there
> > was no change in the API (besides, it has always been emphasized that the
> > API did not change between DVB and dvb-kernel).
> >
> > Sendeing DiSEqC codes in VDR is done via the
> >
> >    ioctl(fd_frontend, FE_DISEQC_SEND_MASTER_CMD, &cmd));
> >
> > call - is this no longer the way to go?
> 
> According to the DISEQC spec you're supposed to do the following for max.
> compatability:
>     ioctl(fd, FE_SET_TONE, SEC_TONE_OFF);
>     ioctl(fd, FE_SET_VOLTAGE, voltage);
>     usleep(15000);
>     ioctl(fd, FE_DISEQC_SEND_MASTER_CMD, &dCmd);
>     usleep(15000);
>     ioctl(fd, FE_DISEQC_SEND_BURST, miniCmd);
>     usleep(15000);
>     ioctl(fd, FE_SET_TONE, tone);
>     usleep(15000);

That's what VDR does with its default DiSEqC setup:

S19.2E  11700 V  9750  t v W15 [E0 10 38 F0] W15 A W15 t
S19.2E  99999 V 10600  t v W15 [E0 10 38 F1] W15 A W15 T
S19.2E  11700 H  9750  t V W15 [E0 10 38 F2] W15 A W15 t
S19.2E  99999 H 10600  t V W15 [E0 10 38 F3] W15 A W15 T

However, if I have equipment where I know that just plain hex commands
work, I don't see the need for doing tone and voltage handling.

Turning on the LNB voltage at all is something I believe the driver
should do when the frontend is opened.

Klaus


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