ardupilot/libraries/AP_HAL_Linux/ToneAlarm.h

#pragma once

#include <AP_HAL/AP_HAL.h>
#include "AP_HAL_Linux_Namespace.h"

#define OCTAVE_OFFSET 0

#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3 139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3 208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define NOTE_C4  262
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4 311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978

#define     TONE_STARTUP_TUNE                   0
#define     TONE_ERROR_TUNE                     1
#define     TONE_NOTIFY_POSITIVE_TUNE           2
#define     TONE_NOTIFY_NEUTRAL_TUNE            3
#define     TONE_NOTIFY_NEGATIVE_TUNE           4
#define     TONE_ARMING_WARNING_TUNE            5
#define     TONE_BATTERY_WARNING_SLOW_TUNE      6
#define     TONE_BATTERY_WARNING_FAST_TUNE      7
#define     TONE_GPS_WARNING_TUNE               8
#define     TONE_ARMING_FAILURE_TUNE            9
#define     TONE_PARACHUTE_RELEASE_TUNE         10

#define TONE_NUMBER_OF_TUNES 11

class Linux::ToneAlarm{
public:
	ToneAlarm();
	void set_tune(uint8_t tone);
	virtual bool init();
	virtual void stop();
	virtual bool play();
	bool is_tune_comp();
	bool set_note();
	bool init_tune();

protected:
	bool tune_comp;
	static const char *tune[TONE_NUMBER_OF_TUNES];
	static bool tune_repeat[TONE_NUMBER_OF_TUNES];
	bool tune_changed;
	uint8_t default_oct;
	uint8_t default_dur;
	uint16_t bpm;
	uint16_t wholenote;
	uint16_t cur_note;
	uint16_t duration;
	int32_t prev_tune_num;
	uint32_t prev_time;
	int8_t tune_num;
	uint8_t tune_pos;

private:
	int32_t period_fd;
	int32_t duty_fd;
	int32_t run_fd;
};