I2S audio support
Implemented I2S audio support:
- driver
I2Son the BadgeVMS side. It opens I2S channel to transmit 16kHz mono 16bit data - audio_test app which reads wav file from SD card and plays it to the I2S device
Implemented I2S audio support:
I2S on the BadgeVMS side. It opens I2S channel to transmit 16kHz mono 16bit data