mic_array_vanilla.h#

void ma_vanilla_init()#

Initializes the mic array module. (Vanilla API only)

Initializes the contexts for the decimator thread and configures the clocks and ports for PDM reception.

After calling this, the PDM clock is active and signaling, but the PDM rx service (ISR) has not yet been activated, so received PDM samples are ignored. The real-time condition is not yet active.

Parameters:

  • pdm_res – Hardware resources required by the mic array module.

void ma_vanilla_task(chanend_t c_frames_out)#

Entry point for decimator thread and PDM rx. (Vanilla API only)

This function sets up and activates the PDM rx service in ISR mode, and then immediately begins executing the decimator.

After calling this the real-time condition is active, meaning there must be another thread waiting to pull frames from the other end of c_frames_out as they become available.

Parameters:

  • c_frames_out – (Non-streaming) Channel over which to send processed frames of audio.