269 lines
5.1 KiB
C
269 lines
5.1 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
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* necessary timer, RCC, and GPIOB values for working with the respective
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* components. Note frequency values and durations are also defined.
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* Registers addresses converted to structs in this new version
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* @version 0.2
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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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#include <inttypes.h>
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// RCC
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typedef struct {
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uint32_t CR;
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uint32_t PLL_CFGR;
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uint32_t CFGR;
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uint32_t CIR;
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uint32_t AHB1RSTR;
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uint32_t AHB2RSTR;
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uint32_t AHB3RSTR;
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uint32_t _RESERVED_1_;
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uint32_t APB1RSTR;
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uint32_t APB2RSTR;
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uint32_t _RESERVED_2_;
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uint32_t _RESERVED_3_;
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uint32_t AHB1ENR;
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uint32_t AHB2ENR;
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uint32_t AHB3ENR;
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uint32_t _RESERVED_4_;
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uint32_t APB1ENR;
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uint32_t APB2ENR;
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uint32_t _RESERVED_5_;
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uint32_t _RESERVED_6_;
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} RCC;
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// GPIOB
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#define GPIOBEN 1
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#define PB4_AF_V 0b10
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#define PB4_AF_P 9
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typedef struct {
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uint32_t MODER;
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uint32_t OTYPER;
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uint32_t OSPEEDER;
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uint32_t PUPDR;
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uint32_t IDR;
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uint32_t ODR;
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uint32_t BSRR;
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uint32_t LCKR;
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uint32_t AFRL;
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uint32_t AFRH;
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} GPIO;
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typedef struct {
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uint32_t CR1; // Control Register 1
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uint32_t CR2; // Control Register 2
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uint32_t SMCR; // Slave Mode Control Register
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uint32_t DIER; // DMA/Interrupt Enable Register
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uint32_t SR; // Status Register
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uint32_t EGR; // Event Generation Register
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uint32_t CCMR1; // Capture/Compare Mode Register 1
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uint32_t CCMR2; // Capture/Compare Mode Register 2
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uint32_t CCER; // Capture/Compare Enable Register
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uint32_t CNT; // Counter
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uint32_t PSC; // Prescaler
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uint32_t ARR; // Auto-Reload Register
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uint32_t _RESERVED_1_;
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uint32_t CCR1; // Capture/Compare Register 1
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uint32_t CCR2; // Capture/Compare Register 2
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uint32_t CCR3; // Capture/Compare Register 3
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uint32_t CCR4; // Capture/Compare Register 4
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uint32_t _RESERVED_2_;
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uint32_t DCR; // DMA Control Register
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uint32_t DMAR; // DMA Address for Full Transfer
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uint32_t TIM2_OR; // TIM2 Option Register
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uint32_t TIM5_OR; // TIM5 Option Register
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} TIM;
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// Timers 3 & 4
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#define TIM3_EN 1
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#define TIM4_EN 2
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#define AFRL_TIM3_CH1_EN 17
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#define OC1PE 3
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#define OC1M_PWM2 0b1110000
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#define CCER_CC1E 1
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#define EGR_UG 1
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#define CR_ARPE_EN 7
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#define CR_CEN 1
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#define DIER_TIE 6
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#define pitchDivisor 1000000
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// SYSCFG
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typedef struct {
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uint32_t MEMRMP;
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uint32_t PMC;
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uint32_t EXTICR1;
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uint32_t EXTICR2;
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uint32_t EXTICR3;
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uint32_t EXTICR4;
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uint32_t CMPCR;
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uint32_t CFGR;
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} SYSCFG;
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// Interrupt
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#define NVIC_ISER1 (volatile uint32_t*) 0xE000E104
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typedef struct {
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uint32_t IMR;
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uint32_t EMR;
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uint32_t RTSR;
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uint32_t FTSR;
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uint32_t SWIER;
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uint32_t PR;
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} EXTI;
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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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extern Note songIM[];
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extern Note songMT[];
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extern Note songFG[];
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// Initializes the piezo speaker to be used with timer 3.
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// Also initializes timer 4 for note duration interrupt
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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
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// and ends at the termination value "END"
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void play_song(Note *songToPlay);
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void play_song_br(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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