[linux-dvb] Problems with twinhanDTV Sat-CI and new HlCI Api

sigmund at snap.tv sigmund at snap.tv
Thu Jun 23 16:01:13 CEST 2005

sigmund at snap.tv wrote:
>> Hi,
>> I'm trying to make a TwinhanDTV Sat-CI card work with cam and the new api, 
>> but have a few problems. I can't say if all these are related, and I'm not 
>> sure what more info should be supplied, but here goes:
>> *Scanning works with dvbscan, and tuning works with szap, but no data comes 
>> out of dvr0, even with -r and -x in various combinations and positions for 
>> szap. I do however get FTA channels with vlc(which does it's own tuning).
>try using test_dvr and see whether the same problem persists in 
works. 0x2000 gets lots of data, using a video pid gets some data, pat and 
pmt pids get no data as long as I care to wait, but this is probably because 
test_dvr doesn save anything before it has 65535 bytes 

>> *I've tried to replicate the calls of ca_zap inside vlc's dvb module, and 
>> all seems to work, however the channel stay scrambled.
>Let's stick on to a minimalistic thing to get this going else, would be 
>a real pain ..
>Try running ca_zap alone, you might not be able to identify anything at 
>all if the initial problems are not solved ..
ca_zap does not finish, even when run before any of my code after a clean 
reboot. There is nothing interresting in dmesg.

>Which provider is it ?..  Some providers even if they do descryption at 
>Program level, the have all the descriptors at Stream level . TPS is 
>known for that . In this case the descriptors from the Stream level have 
>to be moved to Program level ..
Telenor/canal digital, I do not know how they implement this stuff.
>This thing i have not implemented yet ..
That's ok, I heard there is a hacked version of ca_zap flowing around that 
does this. Is this correct? Could the hacks be integrated as an option 
>Try to get a dvbsnoop output for the PAT and PMT
I will try that, I'll be back with the information.
>> I hope this information can be of help, and can help someone find give me a 
>> hint as to what is wrong.
>> As a side note, I've had several problems with these drivers, after some time 
>> the signal strength and SNR values returned goes to 0000 in szap, and some 
>That's okay for the moment, nothing to get upset ..
Not upset, just mentioning it in case it might be related. I assume things 
will play nice once I figure out how to use them.
>> large negative value in vlc, even though tuning works. And after some more 
>> time tuning stops working. Even though the tuning calls complete without error
>> the data returned are still from the old transponder. Reloading the drivers 
>> sometimes help, other times a reboot is needed.
>Hmm .. junk data was written to the card, the MCU crashed .. most 
>probably ..
A reboot should fix that? Or is there some utility to reset/jump start it 

Thanks for the help this far.


Sigmund Augdal

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