ARMEBS4 audio. More...

#include "heivs/audio.h"
#include "heivs/audio_stm32.h"
#include "heivs/audio_codec.h"
#include "stm32/stm32f4xx_rcc.h"
#include "stm32/stm32f4xx_spi.h"
#include "stm32/stm32f4xx_dma.h"
#include "stm32/stm32f4xx_misc.h"
#include "heivs/delay.h"
#include "heivs/time.h"
#include <math.h>
#include "heivs/config.h"

Include dependency graph for audio.c:

Go to the source code of this file.

Data Structures
struct	sine_wave_state_t

Functions
static void	init_sine_wave_float (struct sine_wave_state_t *state, float amplitude, float fs, float frequency, float phase)
	Fast sine wave generator initialization. More...

static float	gen_sine_wave_float (struct sine_wave_state_t *state)
	Fast sine wave generator. More...

status_e	Audio_Stream_Play_Init (uint32_t length, void buffer0, void buffer1, void(done)(const void ))
	Audio stream play initialization. More...

status_e	Audio_Stream_Play_Stop (void)
	Audio stream playing stop. More...

status_e	Audio_Stream_Play_Status (void)
	Is Audio_Stream_Play ready for the next buffer? More...

status_e	Audio_Stream_Play_Pause (void)
	Audio stream play pause. More...

status_e	Audio_Stream_Play (const void *data)
	Audio stream play buffer. More...

status_e	Audio_Stream_Record_Init (uint32_t length, void buffer0, void buffer1, void(done)(const void ))
	Audio stream record initialization. More...

status_e	Audio_Stream_Record_Stop (void)
	Audio stream record stop. More...

status_e	Audio_Init (uint32_t fs, uint32_t sample_size)
	Audio initialization. More...

status_e	Audio_PlaySin (uint16_t freq, uint16_t duration)
	Play a sine sound at a given frequency. More...

status_e	Audio_Play (const int16_t *src, uint32_t length)
	Play a sound (polling mode) More...

status_e	Audio_Record (int16_t *dest, uint32_t length)
	Record a sound (polling mode) More...

status_e	Audio_SetVolumeSpeaker (uint8_t volume)
	Set the volume for speaker output. More...

status_e	Audio_SetVolumeHeadphone (uint8_t volume)
	Set the volume for headphone output. More...

Detailed Description

ARMEBS4 audio.

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

Definition in file audio.c.

Function Documentation

static void init_sine_wave_float	(	struct sine_wave_state_t *	state,
		float	amplitude,
		float	fs,
		float	frequency,
		float	phase
	)

static

Fast sine wave generator initialization.

Parameters

state,the	internal state of the generator
amplitude,the	amplitude of the sine wave
fs,the	sampling frequency (in Hz)
frequency,the	sine frequency (in Hz)
phase,the	start phase (in radians)