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#ifndef BUZZER_H_
#define BUZZER_H_
#include "util.h"
#include <stdint.h>
typedef uint8_t note_t;
enum note_t_fields {
NOTE_ID_MASK = 0x0F,
NOTE_ID_SHIFT = 0,
NOTE_VAL_MASK = 0x70,
NOTE_VAL_SHIFT = 4,
};
enum note_ids {
NOTEID_PAUSE = 0,
NOTEID_C4,
NOTEID_D4,
NOTEID_E4,
NOTEID_F4,
NOTEID_G4,
NOTEID_A4,
NOTEID_B4,
NOTEID_C5,
NOTEID_D5,
NOTEID_E5,
NOTEID_F5,
NOTEID_G5,
NOTEID_A5,
NOTEID_B5,
NOTEID_FLAGS,
};
enum note_values {
NOTEVAL_1_1 = 0, /* 1/1 */
NOTEVAL_1_2, /* 1/2 */
NOTEVAL_1_4, /* 1/4 */
NOTEVAL_1_8, /* 1/8 */
NOTEVAL_1_16, /* 1/16 */
NOTEVAL_1_32, /* 1/32 */
NOTEVAL_1_64, /* 1/64 */
NOTEVAL_UNUSED0,
};
#define RESTRIKE_MS 5
enum note_flags_values {
NOTEVAL_SHARP = 0,
NOTEVAL_DOT,
NOTEVAL_TIE,
NOTEVAL_OCTAVE_SH_UP,
NOTEVAL_OCTAVE_SH_DOWN,
NOTEVAL_UNUSED1,
NOTEVAL_UNUSED2,
NOTEVAL_UNUSED3,
};
#define note(id, val) ( \
((NOTEID_##id << NOTE_ID_SHIFT) & NOTE_ID_MASK) | \
((NOTEVAL_##val << NOTE_VAL_SHIFT) & NOTE_VAL_MASK) )
#define note_sharp(id, val) note(FLAGS, SHARP), note(id, val)
#define n_dot note(FLAGS, DOT)
#define n_octave_up note(FLAGS, OCTAVE_SH_UP)
#define n_octave_down note(FLAGS, OCTAVE_SH_DOWN)
#define n_tie note(FLAGS, TIE)
#define n_pause(val) note(PAUSE, val)
#define invalid_note 0xFF
#define note_array_end invalid_note
void buzzer_play(const note_t __flash *notes,
uint16_t basespeed_ms,
bool loop);
void buzzer_stop(void);
bool buzzer_is_playing(void);
enum buzzer_volume_limits {
BUZZER_VOLUME_MIN = 5,
BUZZER_VOLUME_DEFAULT = 9,
BUZZER_VOLUME_MAX = 15,
};
void buzzer_volume_set(int8_t volume);
int8_t buzzer_volume_get(void);
void buzzer_100hz_tick(void);
void buzzer_init(void);
#endif /* BUZZER_H_ */
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