The second audio board is a Bt878a TV card. It
can be used as ADC up to 448000 samples per second and 16 bits. I know this
can be a bit strange but you can read the setup process here: http://www.domenech.org/bt878a-adc/index-e.htm
In the U option Linrad says:
=cut=====================================
Checking device
drivers
00:/dev/sound/dsp 44100 Hz 2
Chan. 16 bit
02:/dev/sound/dsp1 32000
Hz 2 Chan 16
bit
03:/dev/sound/dsp2 448000 Hz 2
Chan 16 bit
Select device for input by line number
_
=cut=====================================
If I select “00” it works but if I select
“03” (the Bt878 ADC) it says “ERROR (press any key)”. Doesn’t matter if I try
“03”,“3”, “02”, “2”, always the same message.
I
forgot to write the modes in the list you see when pressing
U.
As
you can see in the log file dsp1 and dsp2 fail in read
modes
so
they can not be used for input.
Try
this in setad.c:
Insert a new line
between 435 and 436.
Copy
it from line 445: read(audio_out.............
Maybe this driver wants a first read before it will
respond
to
ioctl(GETISPACE)
If
it does not help, there is nothing I know I could do. Linrad
needs
the
ioctl(GETISPACE) to synchronize boards.
If
the above fixes the problem I will make some changes to incorporate
it.
The
system might hang on the read call and something has to be
placed
on
screen for the user to know;)
73
Leif
/ SM5BSZ