audio_dma_register_callback

int32_t audio_dma_register_callback(
    struct audio_dma_descriptor *const desc,
    audio_buffer_cb cb
)

This function allows the application to register a function for the driver to call back when queued buffer transfer has finished, or error happens.

Parameters

desc

Type: struct audio_dma_descriptor Struct *const

Pointer to the audio driver descriptor

cb

Type: audio_buffer_cb typedef

Callback function, passing NULL will de-register any registered callback function

Returns

Type: int32_t

The status of callback assignment.