Audio USB passthrough on WP7611

IoT Modules WP Series
10

Here is my testing:

  1. type the following in AT command channel:
    at!avcfg=5,1,3
    AT!AVSETPROFILE=5

  2. in ubuntu PC

arecord -D front:CARD=WP7607,DEV=0 -r 8000 --format S16_LE /home/owner/Downloads/record.wav

  1. type the following in WP76
    AT!AVAUDIO=1,1,/home/root/0-to-9.wav

  2. after some time after the playback, type at!avaudio=1,0 in AT command channel in WP76

  3. now you can playback record.wav in Ubuntu PC, and it is proven that the 0-to-9.wav is recorded to PC.