audio.h File Reference

Files for controlling audio speaker and MIDI files. More...

#include "VS1053_PatchTable.h"

Go to the source code of this file.

Functions
void	audioInit (void)
	Initialize audio chip. More...
void	audioNoteOn (uint8 instrument, uint8 key, uint8 velocity, uint32 duration)
	Plays given note for given time. This will schedule a note off message for the sound chip. More...
void	audioNoteOff (uint8 instrument, uint8 key)
	Turns off given note. More...
void	audioNoteOffAll (void)
	Turns off all notes. More...
void	audioVolume (uint8 volume)
	Set the volume level. More...
void	soundChipTest (uint8 test)
	Turns off sound. Sends audioMIDINoteOff data through SSI to soundchip. More...
void	playMajorChord (uint8 instrument, uint8 baseNote, uint8 volume, uint32 duration)
	Plays a three note major chord. More...
void	playMinorChord (uint8 instrument, uint8 baseNote, uint8 volume, uint32 duration)
	Plays a three note minor chord. More...

Detailed Description

Files for controlling audio speaker and MIDI files.

Since

Jul 6, 2011

Author

Sunny Kim

Function Documentation

void audioInit

(

void

)

Initialize audio chip.

Returns

void

void audioNoteOff	(	uint8	instrument,
		uint8	key
	)

Turns off given note.

Parameters

instrument	Instrument to stop
key	Note to turn off

Returns

void

void audioNoteOffAll

(

void

)

Turns off all notes.

Returns

void

void audioNoteOn	(	uint8	instrument,
		uint8	key,
		uint8	velocity,
		uint32	duration
	)

Plays given note for given time. This will schedule a note off message for the sound chip.

Parameters

instrument	Instrument to play
key	Note to play
velocity	the velocity (volume) to play. range is from 0-127
duration	Duration of the note (ms)

void audioVolume

(

uint8

volume)

Set the volume level.

Parameters

volume

the output level for left and right channels. 0 = total silence, 255 = max volume

Returns

void

void playMajorChord	(	uint8	instrument,
		uint8	baseNote,
		uint8	volume,
		uint32	duration
	)

Plays a three note major chord.

Parameters

instrument
baseNote	root of the chord (played at baseNote + middleC)
volume	the output level for left and right channels. 0 = total silence, 255 = max volume
duration	Duration of the note (ms)

Returns

void

void playMinorChord	(	uint8	instrument,
		uint8	baseNote,
		uint8	volume,
		uint32	duration
	)

Plays a three note minor chord.

Parameters

instrument
baseNote	root of the chord (played at baseNote + middleC)
volume	the output level for left and right channels. 0 = total silence, 255 = max volume
duration	Duration of the note (ms)

Returns

void

void soundChipTest

(

uint8

test)

Turns off sound. Sends audioMIDINoteOff data through SSI to soundchip.

Parameters

test

Returns

void