Audio I2S interface API for Audio applications. More...

Macros
#define	FRAME_SIZE_BYTES ((CONFIG_I2S_LRCK_FREQ_HZ / 1000 * 10) * CONFIG_I2S_CH_NUM * CONFIG_AUDIO_BIT_DEPTH_OCTETS)
	Calculate frame size in bytes based on audio configuration.

#define	FRAME_SIZE_MONO_BYTES (FRAME_SIZE_BYTES / CONFIG_I2S_CH_NUM)

#define	BLOCK_SIZE_BYTES (FRAME_SIZE_BYTES / CONFIG_FIFO_FRAME_SPLIT_NUM)

#define	I2S_SAMPLES_NUM (BLOCK_SIZE_BYTES / (CONFIG_AUDIO_BIT_DEPTH_OCTETS) / (32 / CONFIG_AUDIO_BIT_DEPTH_BITS))
	Calculate number of samples per I2S block.

Typedefs
typedef void(*	i2s_blk_comp_callback_t) (uint32_t frame_start_ts, uint32_t rx_buf_released, uint32_t const tx_buf_released)
	I2S block complete event callback type.

Functions
void	audio_i2s_set_next_buf (const uint8_t tx_buf, uint32_t rx_buf)
	Supply the buffers to be used in the next part of the I2S transfer.

void	audio_i2s_start (const uint8_t tx_buf, uint32_t rx_buf)
	Start the continuous I2S transfer.

void	audio_i2s_stop (void)
	Stop the continuous I2S transfer.

void	audio_i2s_blk_comp_cb_register (i2s_blk_comp_callback_t blk_comp_callback)
	Register callback function for I2S block complete event.

void	audio_i2s_init (void)
	Initialize I2S module.

Detailed Description

Audio I2S interface API for Audio applications.

This module provides the I2S (Inter-IC Sound) interface for audio data transfer between the application and external audio hardware.

Macros