Re: [linux-dvb] [patch] Compro DVB-T300 and 200 card support

Andy linux-dvb at andrewsmith.plus.com
Thu Sep 15 14:25:51 CEST 2005


>> Kernel 2.6.12-1.1447_FC4. Ran "get_dvb_firmware tda10046" and copied the
>> resulting "dvb-fe-tda10046.fw" to /lib/firmware. As I understand that's all
>> I need to do, although I can't see any indication in /var/log/messages of it
>> actually being loaded...
>> 
>Hm, this might depend on the distribution you use. For me, the location has to
>be /usr/lib/hotplug/firmware/
>
>You might be fooled by this: The driver deals with the firmware when the
>device gets opened, so i.e. when you start tzap. Then you will find the
>appropriate messages and in your case hopefully the failed download.
>Please check.

Ah ha, did some searching and came up with this (http://www.linuxquestions.org/questions/showthread.php?threadid=353293) which guided 
me through setting up the transmitter frequencies and then doing a channel scan. End result is tzap being able to lock on to channels. Each time 
it's started, the following message appears in messages:

    Sep 15 12:45:46 alpha kernel: tda1004x: found firmware revision 26 -- ok

So the firmware must have been loaded at some point in the past whilst I was playing around with it!


>> Anyway, into mythtv-setup - and it acknowledged that the card existed
>> (woo!). However a channel search resulted in no channels found; during the
>> search SNR was fluctuating between 60-100% but signal strength was fixed
>> firmly at 0%.
>> 
>> This could be the cheapo antenna cable I'm using but I wont be in the same
>> physical location as the machine for a couple weeks so I cant change it atm!
>> But could someone let me know how I can find out whether the firmware is
>> actually loading or not...? Even with cheap cable I'd expect to see a tiny
>> bit of signal strength...
>> 
>Maybe, but the chip yust tells nonsens until it is initialized (and locked)

Ah, I see that's true now :)  Here's my output from tzap:

# ./tzap -c ./channels.conf-dvbt-sudbury "BBC ONE"
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
tuning to 698167000 Hz
video pid 0x0258, audio pid 0x0259
status 01 | signal a6a6 | snr 3737 | ber 0001fffe | unc 00000000 | 
status 1f | signal aaaa | snr fcfc | ber 00000276 | unc 00000002 | FE_HAS_LOCK

I assume 'ffff' is the maximum signal and snr values? Looks like I have a decent enough signal...

Still having troubles with myth-tv but don't think I can really do much more until I'm actually sitting at the machine (there's only so much one can 
do with SSH and VNC!).

Regards,

Andy




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