[linux-dvb] Support for Technotrend DVB-C CI budget card (13c2:1010)

Simo Kivimäki simo.j.kivimaki at tut.fi
Fri Aug 5 14:48:29 CEST 2005


Andrew de Quincey wrote:
> On Wednesday 27 July 2005 16:39, Simo Kivimäki wrote:
>>Andrew de Quincey wrote:
>>
>>>Argh. there were reports before that the STV0297 driver didn't like
>>>QAM-128. I don't have access to any QAM128 signals (was testing with
>>>QAM64).
>>
>>Ok, any ideas how to get it work? I have only QAM128 signals here.
> 
> Hmm, basically someone with access to a QAM256 signal has to fiddle with the 
> code until it works :(

Hi,

Now I get the card tuned with QAM128 but it's quite slow. I increased 
timeouts much (+5 s and +10 s for main lock). Latest CVS version is in use.

And I changed:
stv0297_writereg_mask(state, 0x88, 0x08, 0x08);
to stv0297_writereg_mask(state, 0x88, 0x08, 0x00);

as proposed in: 
http://www.linuxtv.org/pipermail/linux-dvb/2005-June/002691.html

Usually it gets nicely pass "equaliser full convergence" timeout but 
main lock is more difficult to accomplish.

Could you give any hints for further debug? Any register values that I 
could try to change?

Is there any specifications somewhere that would help? How about 
investigating what register values Windows driver uses. Is it for 
example possible to read them from the i2c bus?





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