audio_stm32.c File Reference

ARMEBS4 audio for stm32. More...

#include "heivs/audio_stm32.h"
#include "heivs/bsp.h"
#include "stm32/stm32f4xx_rcc.h"
#include "stm32/stm32f4xx_spi.h"
#include "stm32/stm32f4xx_dma.h"
#include "stm32/stm32f4xx_misc.h"
#include "heivs/stm32_gpio.h"
#include "heivs/config.h"

Include dependency graph for audio_stm32.c:

Go to the source code of this file.

Data Structures
struct	audio_setup_t
	Predefined audio setup. More...
struct	dma_xfer_t
	Description of a DMA transfer. More...

Functions
static status_e	audio_setup_selection (struct audio_setup_t *setup, uint32_t fs, uint32_t sample_size)
	Find the correct setup. More...
status_e	AudioSTM32_Stream_Play_Init (uint32_t length, void *buffer0, void *buffer1, void(*done)(const void *))
	Audio stream initialization. More...
status_e	AudioSTM32_Stream_Play_Stop (void)
	Audio stream stop. More...
status_e	AudioSTM32_Stream_Play_Status (void)
	Is AudioSTM32_Stream_Play ready for the next buffer? More...
status_e	AudioSTM32_Stream_Play (const void *data)
	Audio stream play buffer. More...
status_e	AudioSTM32_Play (const int16_t *src, uint32_t length)
	Play a sound (polling mode) More...

Variables
static const struct audio_setup_t	audio_setups []
	Table of all currently supported setups.
static struct dma_xfer_t	dma_play_xfer
	DMA transfer.
static struct audio_setup_t	setup

Detailed Description

ARMEBS4 audio for stm32.

Author

marc dot pignat at hevs dot ch & Pascal Sartoretti (sap at hevs dot ch)

Definition in file audio_stm32.c.

Function Documentation

static status_e audio_setup_selection ( struct audio_setup_t *  setup, uint32_t  fs, uint32_t  sample_size  )

static

Find the correct setup.

Parameters

fs,the

sampling frequency

Returns

a pointer to the configuration or NULL if the frequency is not supported

Definition at line 113 of file audio_stm32.c.

References ARRAY_SIZE, ERROR_BAD_PARAM, memcpy(), and NO_ERROR.

Here is the call graph for this function:

Variable Documentation

struct audio_setup_t setup

static

The current audio setup

Definition at line 90 of file audio_stm32.c.

Referenced by Audio_Init(), and Audio_PlaySin().