185 lines
3.5 KiB
C
185 lines
3.5 KiB
C
/**
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* @file piezoSpeaker.h
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* @author Trevor Barnes
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* @brief Header file for the piezo speaker's C file that provides all of the necessary timer, RCC,
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* and GPIOB values for working with the respective components. Note frequency values and durations
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* are also defined.
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* @version 0.1
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* @date 2022-01-12
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*
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* @copyright Copyright (c) 2022
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*
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*/
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#ifndef PIEZOSPEAKER_H_
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#define PIEZOSPEAKER_H_
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// RCC
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#define RCC_AHB1ENR (volatile uint32_t*) 0x40023830
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#define RCC_APB1ENR (volatile uint32_t*) 0x40023840
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// GPIOB
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#define GPIOB_MODER (volatile uint32_t*) 0x40020400
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#define GPIOBEN 1
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#define GPIOB_AFRL (volatile uint32_t*) 0x40020420
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#define AFRL_TIM3_CH1_EN 17
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// Timer 3
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#define TIM3_EN 1
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#define TIM3_CCMR1 (volatile uint32_t*) 0x40000418
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#define OC1PE 3
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#define OC1M_PWM2 0b1110000
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#define TIM3_CCER (volatile uint32_t*) 0x40000420
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#define CCER_CC1E 1
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#define TIM3_EGR (volatile uint32_t*) 0x40000414
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#define EGR_UG 1
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#define TIM3_PSC (volatile uint32_t*) 0x40000428
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#define TIM3_ARR (volatile uint32_t*) 0x4000042C
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#define TIM3_CCR1 (volatile uint32_t*) 0x40000434
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#define TIM3_CR1 (volatile uint32_t*) 0x40000400
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#define CR_ARPE_EN 7
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#define CR_CEN 1
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#define PB4_AF_V 0b10
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#define PB4_AF_P 9
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#define pitchDivisor 1000000
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typedef struct{
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unsigned int noteFrequency;
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unsigned int noteDuration;
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} Note;
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// Initializes the piezo speaker to be used with timer 3
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void piezo_init();
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// Plays a given note at a certain frequency for a certain duration
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void play_note(Note noteToPlay);
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// Iterates through an array of note structs and ends at the termination value "END"
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void play_song(Note *songToPlay);
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// Frequency Value Signifying a rest
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#define r 1
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// Note Frequency Symbols (Rounded to nearest integer value)
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#define C0 16
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#define Db0 17
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#define D0 18
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#define Eb0 19
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#define E0 21
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#define F0 22
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#define Gb0 23
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#define G0 25
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#define Ab0 26
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#define A0 28
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#define Bb0 29
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#define B0 31
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#define C1 33
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#define Db1 35
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#define D1 37
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#define Eb1 39
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#define E1 41
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#define F1 44
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#define Gb1 46
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#define G1 49
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#define Ab1 52
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#define A1 55
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#define Bb1 58
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#define B1 62
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#define C2 65
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#define Db2 69
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#define D2 73
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#define Eb2 78
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#define E2 82
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#define F2 87
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#define Gb2 93
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#define G2 98
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#define Ab2 104
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#define A2 110
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#define Bb2 117
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#define B2 123
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#define C3 131
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#define Db3 139
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#define D3 147
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#define Eb3 156
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#define E3 165
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#define F3 175
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#define Gb3 185
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#define G3 196
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#define Ab3 208
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#define A3 220
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#define Bb3 233
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#define B3 247
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#define C4 262
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#define Db4 277
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#define D4 294
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#define Eb4 311
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#define E4 330
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#define F4 349
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#define Gb4 370
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#define G4 392
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#define Ab4 415
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#define A4 440
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#define Bb4 466
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#define B4 494
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#define C5 523
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#define Db5 554
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#define D5 587
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#define Eb5 622
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#define E5 659
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#define F5 698
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#define Gb5 740
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#define G5 784
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#define Ab5 831
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#define A5 880
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#define Bb5 932
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#define B5 988
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#define C6 1047
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#define Db6 1109
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#define D6 1175
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#define Eb6 1245
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#define E6 1319
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#define F6 1397
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#define Gb6 1480
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#define G6 1568
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#define Ab6 1661
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#define A6 1760
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#define Bb6 1865
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#define B6 1976
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#define C7 2093
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#define Db7 2217
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#define D7 2349
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#define Eb7 2489
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#define E7 2637
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#define F7 2794
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#define Gb7 2960
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#define G7 3136
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#define Ab7 3322
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#define A7 3520
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#define Bb7 3730
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#define B7 3951
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#define C8 4186
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#define Db8 4435
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#define D8 4699
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#define Eb8 4978
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// Value that indicates the end of a song
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#define END 0
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// Tempo value set at 120 beats per min
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#define BPM 120
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// Quarter Note
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#define Q 60000/BPM
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// Half Note
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#define H 2*Q
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// Whole Note
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#define W 4*Q
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// Eighth Note
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#define E Q/2
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// Sixteenth Note
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#define S Q/4
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#endif
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