[linux-dvb] DVB Hardware Checking possible (2nd try)?

[Ralph Metzler <rjkm@convergence.de>]

Joerg Eilers writes:
 > Please forgive me when I post this question a second time, but I think
 > I read you were on vacation (hope you enjoyed it) and I didn't address
 > this question to you.
 > 
 > I installed a second DVB-s card, which I bought as an DATA-only card and
 > added the missing RAM as explained some time ago here by Thomas Mungai 
 > (http://linuxtv.org/mailinglists/linux-dvb/2001/05-2001/msg00657.html) .
 > 
 > But I was not very successfull in using it, because when I tried it (with
 > VDR) I got once some seconds recorded (but never again :-(( ),
 > before I got an "ARM crashed" message. I get this messages very often 
 > when vdr tries to tune a channel.
 > 
 > I would like to see, if I can test the result of my soldering.
 > So here's my question: Is there any chance to do some deeper testing of
 > the card hardware?
 > I would especcially like some code to test the ARMs SDRAM memory (e.g. 
 > writing a bit pattern and read it back from the SDRAM).
 > 
 > Is there any chance? I hope, this are just some few lines of code I can
 > insert (or maybe its allready there with an DEBUG=test_arms_memory ? ;-))
 > and no hard or impossible stuff to do.

You would have to write a test routine which runs on the ARM core (in
the firmware) to do this. The Linux driver has no direct access 
to the SDRAM of the card. 


Ralph


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