/**
 * @file piezoSpeaker.h
 * @author Trevor Barnes
 * @brief 
 * @version 0.1
 * @date 2022-01-19
 * 
 * @copyright Copyright (c) 2022
 * 
 */

#ifndef PIEZOSPEAKER_H_
#define PIEZOSPEAKER_H_

// RCC
#define RCC_AHB1ENR (volatile uint32_t*) 0x40023830
#define RCC_APB1ENR (volatile uint32_t*) 0x40023840

// GPIOB
#define GPIOB_MODER (volatile uint32_t*) 0x40020400
#define GPIOBEN 1
#define GPIOB_AFRL (volatile uint32_t*) 0x40020420
#define AFRL_TIM3_CH1_EN 17

// Timer 3
#define TIM3_EN 1
#define TIM3_CCMR1 (volatile uint32_t*) 0x40000418
#define OC1PE 3
#define OC1M_PWM2 0b1110000
#define TIM3_CCER (volatile uint32_t*) 0x40000420
#define CCER_CC1E 1
#define TIM3_EGR (volatile uint32_t*) 0x40000414
#define EGR_UG 1
#define TIM3_PSC (volatile uint32_t*) 0x40000428
#define TIM3_ARR (volatile uint32_t*) 0x4000042C
#define TIM3_CCR1 (volatile uint32_t*) 0x40000434
#define TIM3_CR1 (volatile uint32_t*) 0x40000400
#define CR_ARPE_EN 7
#define CR_CEN 1

#define PB4_AF_V 0b10
#define PB4_AF_P 9

#define mil 1000000

typedef struct{
	double noteFrequency;
	double noteDuration;
} Note;

void piezo_init();

void play_note(Note noteToPlay);
// void play_note(double playFrequency, double playDuration);

void play_song(Note *songToPlay);

// Note Frequency Symbols
// Rest technically = 0
#define r	0
#define	C0  16.35
#define	Db0	17.32
#define	D0	18.35
#define	Eb0	19.45
#define	E0	20.60
#define	F0	21.83
#define	Gb0	23.12
#define	G0	24.50
#define	Ab0	25.96
#define	A0	27.50
#define	Bb0	29.14
#define	B0	30.87
#define	C1	32.70
#define	Db1	34.65
#define	D1	36.71
#define	Eb1	38.89
#define	E1	41.20
#define	F1	43.65
#define	Gb1	46.25
#define	G1	49.00
#define	Ab1	51.91
#define	A1	55.00
#define	Bb1	58.27
#define	B1	61.74
#define	C2	65.41
#define	Db2	69.30
#define	D2	73.42
#define	Eb2	77.78
#define	E2	82.41
#define	F2	87.31
#define	Gb2	92.50
#define	G2	98.00
#define	Ab2	103.83
#define	A2	110.00
#define	Bb2	116.54
#define	B2	123.47
#define	C3	130.81
#define	Db3	138.59
#define	D3	146.83
#define	Eb3	155.56
#define	E3	164.81
#define	F3	174.61
#define	Gb3	185.00
#define	G3	196.00
#define	Ab3	207.65
#define	A3	220.00
#define	Bb3	233.08
#define	B3	246.94
#define	C4	261.63
#define	Db4	277.18
#define	D4	293.66
#define	Eb4	311.13
#define	E4	329.63
#define	F4	349.23
#define	Gb4	369.99
#define	G4	392.00
#define	Ab4	415.30
#define	A4	440.00
#define	Bb4	466.16
#define	B4	493.88
#define	C5	523.25
#define	Db5	554.37
#define	D5	587.33
#define	Eb5	622.25
#define	E5	659.26
#define	F5	698.46
#define	Gb5	739.99
#define	G5	783.99
#define	Ab5	830.61
#define A5	880.00
#define	Bb5	932.33
#define	B5	987.77
#define	C6	1046.50
#define	Db6	1108.73
#define	D6	1174.66
#define	Eb6	1244.51
#define	E6	1318.51
#define	F6	1396.91
#define	Gb6	1479.98
#define	G6	1567.98
#define	Ab6	1661.22
#define	A6	1760.00
#define	Bb6	1864.66
#define	B6	1975.53
#define	C7	2093.00
#define	Db7	2217.46
#define	D7	2349.32
#define	Eb7	2489.02
#define	E7	2637.02
#define	F7	2793.83
#define	Gb7	2959.96
#define	G7	3135.96
#define	Ab7	3322.44
#define A7	3520.01
#define	Bb7	3729.31
#define	B7	3951.07
#define	C8	4186.01
#define	Db8	4434.92
#define	D8	4698.64
#define	Eb8	4978.03
// Ending "termination" value indicating end of a song
#define T 5000.00
// Tempo value set at 120 beats per min
#define BPM 240
#define H 2*Q
#define Q 60000/BPM
#define E Q/2
#define S Q/4
#define W 4*Q

#endif