Rock/linein
< Rock
There are Line In from the extension header on rock pro. The latest Rabian has enabled Line in.
1 Tested module
http://detail.tmall.com/item.htm?spm=a1z10.3-b.w4011-3079905380.27.SocVjO&id=42576261888&rn=b482a0f48f9bab9ef1f5e1ffb433daed&abbucket=7# Module power supply pins VCC GND connect to pro/lite extend port J8 pins 2 1. Module audio out pin OUT connect to pro/lite extend port J8 pins 5/6.
2 Select capture from mic / line in
echo 1 > /tmp/rk1000_input_sel #RK1000 capture from mic echo 2 > /tmp/rk1000_input_sel #RK1000 capture from line in
3 test cmd
capture: arecord -D 'default' -V stereo -c 2 -f dat -d 100 out.wav #100 capture duration