2009-07-10 05:22:38     PCM data stream error

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2009-07-10 05:22:38     PCM data stream error

david wang (CHINA)

Message: 77032   

 

Hi, all

 

  I've make the wm8731 driver work  in my bf527 board, but a problem, when I read pcm data from the device, the data format is not correct. I compare to the normal pcm data stream ,and found there'er many of zeros between valid data. the attached is the wrong recorded data. I've check the wm8731'  register and ADCLRC by oscilloscope, they were correct. I'm not very familiar with ALSA and I2S, Does anyone here can tell me what may be the problem? Thanks!

 

 

 

  the attached is a 10 seconds pcm data stream at 8K sample rate , 16bit sample size, and 1 channel.

 

tmp.pcm

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2009-07-10 05:24:38     Re: PCM data stream error

david wang (CHINA)

Message: 77033   

 

forgot to tell  my kernel version, 2009R1.

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2009-07-10 13:16:13     Re: PCM data stream error

Robin Getz (UNITED STATES)

Message: 77049   

 

David:

 

We support the ADI codecs - not the Wolfson ones - try the ALSA mailing list.

 

-Robin

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