Hi, I have bought a MEMs breakout board from adafruit (https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout/overview) and connected it to the I2S headers found on J21A on the Development Kit.
I have connected the pins on the J21A header as follows;
3.3V on pin 1
GND on pin 39
BCLK on pin 12
DOUT on pin 40 and
LRCL on pin 35
Then I used the following to record the sound;
gst-launch-1.0 audiotestsrc ! ‘audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2’ ! voaacenc ! qtmux ! filesink location=test.mp4 -e
but I just get a loud beep as recording.
I would be grateful if somebody could help me.
Am I connecting the microphone wrong? or should I change the channel or do some software configuration prior to start encoding the audio?