AUDIO loopback with DISCO_H747I
hg clone https://mbed.org/teams/ST/code/DISCO_H747I_AUDIO_demo
mbed compile -m DISCO_H747I -t <GCC_ARM/ARM/IAR> -f
A single printf is done at main start
Audio is recorded from board micro (U21) next to joystick.
Audio output is the jack connector (CN11) (green one).
Audio configuration is not compatible with Ethernet HW patch