Trying to send audio from I2S mic to a BT sink. How should I go about in doing this? I have both components working but need to integrate them together. Any thoughts regarding DMA sizes and timing interrupts I should try implementing?

How exactly does the callback function for the data work (bt_app_a2d_data_cb)? Where does it get this 'data' from? I'm trying to manually put in an array myself (of a sinusoid) to be played to my Bluetooth speaker but it currently is just outputting noise with no semblance of the PCM sine wave I hav...