22 lines
460 B
C
22 lines
460 B
C
#ifndef _SPEAKER_H_
|
|
#define _SPEAKER_H_
|
|
|
|
#include "../lib/lib.h"
|
|
#include "../data/note-freq.h"
|
|
|
|
#define PIT_FREQUENCY 1193180
|
|
#define SPEAKER_PORT_CMD 0x43
|
|
#define SPEAKER_PORT_DATA 0x42
|
|
#define SPEAKER_PORT_CONF 0x61
|
|
#define SPEAKER_INIT 0xb6
|
|
#define SPEAKER_MASK_MUTE 0xfc
|
|
#define SPEAKER_MASK_UNMUTE 0x03
|
|
|
|
void speaker_init();
|
|
void speaker_play(uint16_t hz);
|
|
void speaker_tune(uint8_t row, tune_t tune);
|
|
void speaker_mute();
|
|
void speaker_unmute();
|
|
|
|
#endif
|