furi_hal_speaker.h File Reference

Speaker HAL. More...

#include <furi.h>

Go to the source code of this file.

Functions
void	furi_hal_speaker_init (void)
	Init speaker.
void	furi_hal_speaker_deinit (void)
	Deinit speaker.
FURI_WARN_UNUSED bool	furi_hal_speaker_acquire (uint32_t timeout)
	Acquire speaker ownership.
void	furi_hal_speaker_release (void)
	Release speaker ownership.
bool	furi_hal_speaker_is_mine (void)
	Check current process speaker ownership.
void	furi_hal_speaker_start (float frequency, float volume)
	Play a note.
void	furi_hal_speaker_set_volume (float volume)
	Set volume.
void	furi_hal_speaker_stop (void)
	Stop playback.

Detailed Description

Speaker HAL.

Function Documentation

furi_hal_speaker_acquire()

FURI_WARN_UNUSED bool furi_hal_speaker_acquire

(

uint32_t

timeout

)

Acquire speaker ownership.

Warning

You must acquire speaker ownership before use

Parameters

timeout

Timeout during which speaker ownership must be acquired

Returns

bool returns true on success

furi_hal_speaker_is_mine()

bool furi_hal_speaker_is_mine

(

void

)

Check current process speaker ownership.

Warning

always returns true if called from ISR

Returns

bool returns true if process owns speaker

furi_hal_speaker_release()

void furi_hal_speaker_release

(

void

)

Release speaker ownership.

Warning

You must release speaker ownership after use

furi_hal_speaker_set_volume()

void furi_hal_speaker_set_volume

(

float

volume

)

Set volume.

Warning

no ownership check if called from ISR

Parameters

volume

The volume

furi_hal_speaker_start()

void furi_hal_speaker_start	(	float	frequency,
		float	volume )

Play a note.

Warning

no ownership check if called from ISR

Parameters

frequency	The frequency
volume	The volume

furi_hal_speaker_stop()

void furi_hal_speaker_stop

(

void

)

Stop playback.

Warning

no ownership check if called from ISR