41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <avr/io.h>
|
|
#include <util/delay.h>
|
|
#include "musical_notes.h"
|
|
|
|
#ifndef AUDIO_H
|
|
#define AUDIO_H
|
|
|
|
typedef union {
|
|
uint8_t raw;
|
|
struct {
|
|
bool enable :1;
|
|
uint8_t level :7;
|
|
};
|
|
} audio_config_t;
|
|
|
|
void audio_toggle(void);
|
|
void audio_on(void);
|
|
void audio_off(void);
|
|
|
|
void play_sample(uint8_t * s, uint16_t l, bool r);
|
|
void play_note(double freq, int vol);
|
|
void stop_note(double freq);
|
|
void stop_all_notes(void);
|
|
void init_notes(void);
|
|
void play_notes(float (*np)[][2], uint8_t n_count, bool n_repeat, float n_rest);
|
|
|
|
void set_timbre(float timbre);
|
|
void set_tempo(float tempo);
|
|
void increase_tempo(uint8_t tempo_change);
|
|
void decrease_tempo(uint8_t tempo_change);
|
|
|
|
// These macros are used to allow play_notes to play an array of indeterminate
|
|
// length. This works around the limitation of C's sizeof operation on pointers.
|
|
// The global float array for the song must be used here.
|
|
#define NOTE_ARRAY_SIZE(x) ((int)(sizeof(x) / (sizeof(x[0]))))
|
|
#define PLAY_NOTE_ARRAY(note_array, note_repeat, note_rest_style) play_notes(¬e_array, NOTE_ARRAY_SIZE((note_array)), (note_repeat), (note_rest_style));
|
|
|
|
|
|
#endif |