Hello

I am new to ALSA and trying to write a new driver for a ADC connected with PCM to an AVR32 on a NGW100 reference card provided by Atmel.

I have the problem that different channels from the PCM stream comes in different positions in the WAV file. For example when I disable all but the first PCM channel on the ADC, I can see with an oscilloscope that there is only data in the first timeslot on the PCM data stream. But the data from this channel can occur in any of the 4 channels in the WAV file. This is consistent throughout the one capture/file, but in the next capture the data will occur in another channel in the WAV-file.

How can I make sure that the data from one particular channel always occur in a fixed position in the WAV file?

Best regards William Juul