一、设计描述
本设计以STM32MP157A单片机为核心控制器,加上其他的模块一起组成基于单片机的音乐盒的整个系统,通过不同频率的PWM使蜂鸣器播放音乐,通过按键中断实现歌曲切换,音量调节,定时器中断实现播放速度调节,LED灯也会随着音乐而闪烁。
硬件:STM32MP157A
软件:STM32CUBEIDE
音乐盒的功能:
1、能稳定的播放出音乐,满足使用者对音乐盒的需求。
2、具有开始和暂停的功能,按下暂停键音乐会停止播放,再按下开始,音乐会接着播放。
3、可以通过按下切换键播放下一首歌曲。
4、可以通过按下变速键,实现歌曲由1倍数-1.2倍数-1.5倍数-2倍数-0.8倍数-0.6倍数-1倍数的切换。
5、可以通过按下音量键使音量逐渐变大,到达阈值之后音量变为0实现静音,再按又会逐渐增大。
6、led会随着歌曲的音调而变化。
二、基本配置信息
通常情况可以采用HAL_Delay()来实现一个音的持续时间,我们将其换成定时器,便于控制。再就是PWM控制蜂鸣器,我们需要设置对应的高中低音。
定时器:使用TIM2配置出一个0.1s的中断,我们将一个半拍按0.5秒算,这样我们只需要改变 对tim2中断的计数来改变播放速度。
PWM蜂鸣器:我们先了解一个公式 || ( (PSC+1)/CLK ) * ( ARR+1 ) = 1 / f || f(频率)
clk:系统时钟(64MHZ)(STM32MP157A)我们在程序中会更改ARR来改变频率,所以我们需要事先确定一个合适的PSC。 频率:一秒执行多少次。
我们取 1/f 中 取中音1频率 1/523.3 = 0.00191094974202178482705904834703
很长一串小数,可能还没算完,那我们可以取小数点后五位数据。我们以 0.00001为基础也就是让
(PSC+1)/CLK ) = 0.00001 已知clk = 64*10^6 得出PSC + 1 = 640
那么ARR是用于干什么的呢。1/523.3 就约等于 0.00001 *( ARR+1 ) 那么 ARR+1就等于191。
总结一下:我们通过计算得出一个基数,PSC配置为 640 - 1 ,明显ARR在最初时没有实际效果,因为音频不同相应的ARR也不同(这里简易 ARR = 999,不建议设置太大)
音乐盒 架构图
三、STM32CUBEIDE配置
1、定时器--100ms
2、PWM配置(蜂鸣器 -- PB6)
3、按键极LED
4、NVIC
四、程序编写
1. 基础变量
因为有许多中断,所以将在stm32mp1xx_it.c 和 main.c 之间交换信息。
stm32mp1xx_it.c 基础变量
int time_100ms_cnt = 0; //0.1s计数器
int Beat_speed = 5; //节拍速度,代表半个节拍需要多少个0.1s
int Beat_speed_n = 0; //实际执行的节拍数int Beat_num = 2; //这个一个音需要多少个 半拍
int flag = 0; //当其等于 1 时,表示一个音结束
int EN = 0; //使能信号,用于开启整个音乐盒
int list = 0; //音乐列表
int list_max = 0; //音乐总数
int Low_volume = 5; //音量大小
#define Low_volume_cnt 3 //音量大小增加数
main.c基础变量
extern int time_100ms_cnt = 0; //0.1s计数器
extern int Beat_speed = 5; //节拍速度,代表半个节拍需要多少个0.1s
extern int Beat_speed_n = 0; //实际执行的节拍数extern int Beat_num = 2; //这个一个音需要多少个 半拍
extern int flag = 0; //当其等于 1 时,表示一个音结束
extern int EN = 0; //使能信号,用于开启整个音乐盒
extern int list = 0; //音乐列表
extern int list_max = 0; //音乐总数
extern int Low_volume = 5; //音量大小
2. LED随音乐跳动
//将LED设置成全灭
void LED_RESET(){HAL_GPIO_WritePin(GPIOF, GPIO_PIN_1, GPIO_PIN_RESET);HAL_GPIO_WritePin(GPIOC, GPIO_PIN_7, GPIO_PIN_RESET);HAL_GPIO_WritePin(GPIOI, GPIO_PIN_11|GPIO_PIN_10, GPIO_PIN_RESET);
}void LED(int i){if(i >= 1) HAL_GPIO_WritePin(GPIOF, GPIO_PIN_1, GPIO_PIN_SET);if(i >= 2) HAL_GPIO_WritePin(GPIOC, GPIO_PIN_7, GPIO_PIN_SET);if(i >= 3) HAL_GPIO_WritePin(GPIOI, GPIO_PIN_11,GPIO_PIN_SET);if(i >= 4) HAL_GPIO_WritePin(GPIOI, GPIO_PIN_10, GPIO_PIN_SET);
}
//随音节输入,改变LED状�??
void LED_BEEP(int i){LED_RESET();switch(i){case 1:{LED(1);break;}case 2:{LED(1);break;}case 3:{LED(2);break;}case 4:{LED(2);break;}case 5:{LED(3);break;}case 6:{LED(3);break;}case 7:{LED(4);break;}default:{LED_RESET();break;}}
}
3. 配置低中高音
int tone[3][8];
//初始化高中低音频率
void tone_init(){tone[1][0] = 0; //不执行音乐tone[1][1] = 191;tone[1][2] = 170;tone[1][3] = 151;tone[1][4] = 143;tone[1][5] = 127;tone[1][6] = 113;tone[1][7] = 101;// 低音 (Low)for (int i = 0; i < 8; i++) {tone[0][i] = tone[1][i] * 2; // 只是低音 近似的值}// 高音 (High)for (int i = 0; i < 8; i++) {tone[2][i] = tone[1][i] / 2; // 只是高音 近似的值}
}
4.乐谱结构体
#define MAX_unit_num 200 //�??大乐谱数�??
//创建结构体保存乐�??
struct music_unit{char name[50]; //乐谱名称int unit[MAX_unit_num]; //发什么音int unit_HL[MAX_unit_num]; //发高音或者其�??int time[MAX_unit_num]; //发音时间//int time_4[MAX_unit_num]; //判断是否�??1/4�??int num; //记录有多少个
}music[25];
5. 编写乐谱
//创建乐谱 返回有多少首音乐
int music_init(){int cnt = 0;//第一首音�?? 生日快乐strcpy(music[0].name, "生日快乐"); // 使用strcpy复制字符�?? 给音乐命�??int music0_unit[29] = {0,0, 5,5,6,5,1,7, 5,5,6,5,2,1,5,5,6,3,1,7, 6,4,4,3,1,2,1,0,0}; //基础乐谱int music0_time[29] = {1,1, 1,1,2,2,2,3, 1,1,2,2,2,3,2,2,2,2,2,2, 2,2,2,2,2,2,3,1,1}; //乐谱节拍music[0].num = 29; //乐谱总数int music0_unit_HL[29] = {1,1,0,0,0,0,1,0, 0,0,0,0,1,1,0,0,1,1,1,0, 0,1,1,1,1,1,1,1,1}; //乐谱全为中音//第二首音�?? �??闪一闪亮晶晶cnt++;strcpy(music[1].name, "�??闪一闪亮晶晶"); // 使用strcpy复制字符�?? 给音乐命�??int music1_unit[44] = {0,1,1,5,5,6,6,5, 4,4,3,3,2,2,1,5,5,4,4,3,3,2, 5,5,4,4,3,3,2,1,1,5,5,6,6,5, 4,4,3,3,2,2,1,0}; //基础乐谱int music1_time[44] = {2,2,2,2,2,2,2,3, 2,2,2,2,2,2,3,2,2,2,2,2,2,3, 2,2,2,2,2,2,3,2,2,2,2,2,2,3, 2,2,2,2,2,2,3,2}; //乐谱节拍int music1_unit_HL[44] ={1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1}; //乐谱全为中音music[1].num = 44; //乐谱总数//第三首音�?? 两只老虎cnt++;strcpy(music[2].name, "两只老虎"); // 使用strcpy复制字符�?? 给音乐命�??int music2_unit[38] = {0,1,2,3,1, 1,2,3,1, 3,4,5,5, 3,4,5,5,5,6,5,4, 3,1,5,6, 5,4,3,1, 1,5,1,1,1,5,1,1, 0}; //基础乐谱int music2_time[38] = {2,1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1,0,0,0,0, 1,1,0,0, 0,0,1,1, 1,1,1,2,1,1,1,2, 2}; //乐谱节拍int music2_unit_HL[38] ={1,1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1, 1,1,1,1, 1,0,1,1,1,0,1,1, 1}; //乐谱�?? 中音music[2].num = 38; //乐谱总数//第四首音�?? 青花瓷片�??cnt++;strcpy(music[3].name, "青花瓷片选"); // 使用strcpy复制字符�?? 给音乐命�??int music3_unit[100] = {0,0,0,0, 0,5,5,3, 2,3,6,2, 3,5,3,2, 2,5,5,3,2,3,5,2, 3,5,2,1, 1,1,2,3, 5,6,5,4, 5,3,3,2,2,2,1,2, 1,1,2,1, 2,3,5,3, 3,3,5,5, 3,2,3,6,2,3,5,3, 2,2,5,5, 3,2,3,5, 2,3,5,2, 1,1,1,2,3,5,6,5, 4,5,3,3, 2,2,5,3, 2,2,2,1, 1,0,0,0}; //基础乐谱int music3_time[100] = {0,0,0,0, 0,0,0,0, 0,0,1,0, 0,0,0,2, 0,0,0,0,0,0,1,0, 0,0,0,2, 0,0,0,0, 0,0,0,0, 0,0,0,0,2,0,0,0, 0,0,0,0, 0,1,0,0, 2,0,0,0, 0,0,0,1,0,0,0,0, 2,0,0,0, 0,0,0,1, 0,0,0,0, 2,0,0,0,0,0,0,0, 0,0,0,0, 0,2,0,1, 0,0,0,1, 2,1,1,1}; //乐谱节拍for(int i =0;i<100;i++)music3_time[i] = music3_time[i]+1;int music3_unit_HL[100] ={ 1,1,1,1, 1,1,1,1, 1,1,0,1, 1,1,1,1, 1,1,1,1,1,1,0,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,0,1,1,1,1, 1,1,1,1, 1,1,1,0, 1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1, 1,1,0,1, 1,1,1,1, 1,1,1,1}; //乐谱�?? 中音music[3].num = 100; //乐谱总数for (int i = 0; i < MAX_unit_num; i++) {//将乐谱保存进结构�??if(i<music[0].num){//确保数据正确music[0].unit[i] =music0_unit[i];music[0].unit_HL[i] =music0_unit_HL[i];music[0].time[i] =music0_time[i];}//将乐谱保存进结构�??if(i<music[1].num){//确保数据正确music[1].unit[i] =music1_unit[i];music[1].unit_HL[i] =music1_unit_HL[i];music[1].time[i] =music1_time[i];}//将乐谱保存进结构�??if(i<music[2].num){//确保数据正确music[2].unit[i] =music2_unit[i];music[2].unit_HL[i] =music2_unit_HL[i];music[2].time[i] =music2_time[i];}//将乐谱保存进结构�??if(i<music[3].num){//确保数据正确music[3].unit[i] =music3_unit[i];music[3].unit_HL[i] =music3_unit_HL[i];music[3].time[i] =music3_time[i];}}return cnt;
}
6. 音乐实现函数
//播放音乐 N首音乐 音量 X 0 - 10
void play_music(int n, int x){static int ni = 0; //用于判断 是否换了音乐static int cnt = 0; //记录播放到哪一个 音节if(ni != n ){//如果音乐换了ni = n;cnt = 0;__HAL_TIM_SET_COMPARE(&htim4,TIM_CHANNEL_1,0);//设置音量HAL_Delay(1000);//}//int value = tone[music[n].unit_HL[cnt]][music[n].unit[cnt]]; //获取频率if(flag == 1){ //接受到一个音节结束flag = 0; //复位Beat_num = music[n].time[cnt]; //这个音需要多少个半拍LED_BEEP(music[n].unit[cnt]); //LED随音节变动if(music[n].time[cnt] == 0){// 后面添加的 1/4 拍Beat_speed_n = Beat_speed /2;}else{//如果没有1/4拍Beat_speed_n = Beat_speed;}__HAL_TIM_SET_AUTORELOAD(&htim4,value); //自动加载频率cnt ++; //可进行下一次音节if(cnt >= music[n].num){ //如果一首音乐播放完毕cnt = 0;//重新播放//__HAL_TIM_SET_COMPARE(&htim4,TIM_CHANNEL_1,0);//设置音量//HAL_Delay(500);//}}//__HAL_TIM_SET_COMPARE(&htim4,TIM_CHANNEL_1,x * (value/100));//设置音量__HAL_TIM_SET_COMPARE(&htim4,TIM_CHANNEL_1,(value/10)*x);//设置音量
}
7. 全部中断
void EXTI0_IRQHandler(void)
{/* USER CODE BEGIN EXTI0_IRQn 0 */if(HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_0) == 0)//确保数据稳定{//每次按下解决 音量�?? Low_volume_cntLow_volume = Low_volume + Low_volume_cnt;if(Low_volume >= 10)Low_volume = 0;}/* USER CODE END EXTI0_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0);/* USER CODE BEGIN EXTI0_IRQn 1 *//* USER CODE END EXTI0_IRQn 1 */
}/*** @brief This function handles EXTI line1 interrupt.*/
void EXTI1_IRQHandler(void)
{/* USER CODE BEGIN EXTI1_IRQn 0 */if(HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_1) == 0)//确保数据稳定{//控制音乐播放的�?�度static int i = 0;i++;//倍数计算公式 1 + (1 - (新的节拍速度 / 原来的节拍�?�度))switch(i){case 0:{Beat_speed = 5; //0.5s半个节拍,正常+�?�度break;}case 1:{Beat_speed = 4; //1.2倍数break;}case 2:{Beat_speed = 3; //约等�?? 1.5倍数break;}case 3:{Beat_speed = 1; //约等�?? 2 倍数break;}case 4:{Beat_speed = 6; //约等�?? 0.8 倍数break;}case 5:{Beat_speed = 7; //约等�?? 0.6 倍数break;}default:{Beat_speed = 5; //0.5s半个节拍,正常�?�度i=0;break;}}}/* USER CODE END EXTI1_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_1);/* USER CODE BEGIN EXTI1_IRQn 1 *//* USER CODE END EXTI1_IRQn 1 */
}/*** @brief This function handles EXTI line2 interrupt.*/
void EXTI2_IRQHandler(void)
{/* USER CODE BEGIN EXTI2_IRQn 0 *///按下�??次音乐进入下�??�??if(HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_2) == 0)//确保数据稳定{list++;if(list > list_max){list = 0;}}/* USER CODE END EXTI2_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_2);/* USER CODE BEGIN EXTI2_IRQn 1 *//* USER CODE END EXTI2_IRQn 1 */
}/*** @brief This function handles TIM2 global interrupt.*/
void TIM2_IRQHandler(void)
{/* USER CODE BEGIN TIM2_IRQn 0 */if(EN == 1)time_100ms_cnt++;elsetime_100ms_cnt = time_100ms_cnt; //其余状�?�不计数if(time_100ms_cnt >= Beat_speed_n * Beat_num){ //这个音节结束time_100ms_cnt = 0;flag = 1; //发�?�音节结束信�??}/* USER CODE END TIM2_IRQn 0 */HAL_TIM_IRQHandler(&htim2);/* USER CODE BEGIN TIM2_IRQn 1 *//* USER CODE END TIM2_IRQn 1 */
}/*** @brief This function handles EXTI line9 interrupt.*/
void EXTI9_IRQHandler(void)
{/* USER CODE BEGIN EXTI9_IRQn 0 */if(HAL_GPIO_ReadPin(GPIOF, GPIO_PIN_9) == 0)//确保数据稳定EN = !EN;/* USER CODE END EXTI9_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_9);/* USER CODE BEGIN EXTI9_IRQn 1 *//* USER CODE END EXTI9_IRQn 1 */
}
五、总代码
main.c
/* USER CODE BEGIN Header */
/********************************************************************************* @file : main.c* @brief : Main program body******************************************************************************* @attention** <h2><center>© Copyright (c) 2024 STMicroelectronics.* All rights reserved.</center></h2>** This software component is licensed by ST under BSD 3-Clause license,* the "License"; You may not use this file except in compliance with the* License. You may obtain a copy of the License at:* opensource.org/licenses/BSD-3-Clause********************************************************************************/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes *//* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */#include <string.h> // 引入strcpy函数�?�?的头文件
/* USER CODE END PTD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM *//* USER CODE END PM *//* Private variables ---------------------------------------------------------*/
TIM_HandleTypeDef htim2;
TIM_HandleTypeDef htim4;/* USER CODE BEGIN PV *//* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_TIM4_Init(void);
static void MX_TIM2_Init(void);
/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 *///将LED设置成全�??
void LED_RESET(){HAL_GPIO_WritePin(GPIOF, GPIO_PIN_1, GPIO_PIN_RESET);HAL_GPIO_WritePin(GPIOC, GPIO_PIN_7, GPIO_PIN_RESET);HAL_GPIO_WritePin(GPIOI, GPIO_PIN_11|GPIO_PIN_10, GPIO_PIN_RESET);
}void LED(int i){if(i >= 1) HAL_GPIO_WritePin(GPIOF, GPIO_PIN_1, GPIO_PIN_SET);if(i >= 2) HAL_GPIO_WritePin(GPIOC, GPIO_PIN_7, GPIO_PIN_SET);if(i >= 3) HAL_GPIO_WritePin(GPIOI, GPIO_PIN_11,GPIO_PIN_SET);if(i >= 4) HAL_GPIO_WritePin(GPIOI, GPIO_PIN_10, GPIO_PIN_SET);
}
//随音节输入,改变LED状�??
void LED_BEEP(int i){LED_RESET();switch(i){case 1:{LED(1);break;}case 2:{LED(1);break;}case 3:{LED(2);break;}case 4:{LED(2);break;}case 5:{LED(3);break;}case 6:{LED(3);break;}case 7:{LED(4);break;}default:{LED_RESET();break;}}
}extern int time_100ms_cnt; //0.1s计数�??
extern int Beat_speed; //节拍速度,代表半个节拍需要多少个0.1s
extern int Beat_speed_n; //实际执行的节�??extern int Beat_num; //这个�?? �??要多少个 半拍
extern int flag; //当其等于 1 时,表示�??个音结束
extern int EN; //使能信号,用于开启整个音�??
extern int list ; //音乐列表
extern int list_max ; //音乐总数
extern int Low_volume; //音量大小int tone[3][8];
//初始化高中低�??
void tone_init(){tone[1][0] = 0; //不执�??tone[1][1] = 191;tone[1][2] = 170;tone[1][3] = 151;tone[1][4] = 143;tone[1][5] = 127;tone[1][6] = 113;tone[1][7] = 101;// 低音 (Low)for (int i = 0; i < 8; i++) {tone[0][i] = tone[1][i] * 2; // 只是�??个近似的值,实际值可能不�??}// 高音 (High)for (int i = 0; i < 8; i++) {tone[2][i] = tone[1][i] / 2; // 只是�??个近似的值,实际值可能不�??}
}#define MAX_unit_num 200 //�??大乐谱数�??
//创建结构体保存乐�??
struct music_unit{char name[50]; //乐谱名称int unit[MAX_unit_num]; //发什么音int unit_HL[MAX_unit_num]; //发高音或者其�??int time[MAX_unit_num]; //发音时间//int time_4[MAX_unit_num]; //判断是否�??1/4�??int num; //记录有多少个
}music[25];//创建乐谱 返回有多少首音乐
int music_init(){int cnt = 0;//第一首音�?? 生日快乐strcpy(music[0].name, "生日快乐"); // 使用strcpy复制字符�?? 给音乐命�??int music0_unit[29] = {0,0, 5,5,6,5,1,7, 5,5,6,5,2,1,5,5,6,3,1,7, 6,4,4,3,1,2,1,0,0}; //基础乐谱int music0_time[29] = {1,1, 1,1,2,2,2,3, 1,1,2,2,2,3,2,2,2,2,2,2, 2,2,2,2,2,2,3,1,1}; //乐谱节拍music[0].num = 29; //乐谱总数int music0_unit_HL[29] = {1,1,0,0,0,0,1,0, 0,0,0,0,1,1,0,0,1,1,1,0, 0,1,1,1,1,1,1,1,1}; //乐谱全为中音//第二首音�?? �??闪一闪亮晶晶cnt++;strcpy(music[1].name, "�??闪一闪亮晶晶"); // 使用strcpy复制字符�?? 给音乐命�??int music1_unit[44] = {0,1,1,5,5,6,6,5, 4,4,3,3,2,2,1,5,5,4,4,3,3,2, 5,5,4,4,3,3,2,1,1,5,5,6,6,5, 4,4,3,3,2,2,1,0}; //基础乐谱int music1_time[44] = {2,2,2,2,2,2,2,3, 2,2,2,2,2,2,3,2,2,2,2,2,2,3, 2,2,2,2,2,2,3,2,2,2,2,2,2,3, 2,2,2,2,2,2,3,2}; //乐谱节拍int music1_unit_HL[44] ={1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1}; //乐谱全为中音music[1].num = 44; //乐谱总数//第三首音�?? 两只老虎cnt++;strcpy(music[2].name, "两只老虎"); // 使用strcpy复制字符�?? 给音乐命�??int music2_unit[38] = {0,1,2,3,1, 1,2,3,1, 3,4,5,5, 3,4,5,5,5,6,5,4, 3,1,5,6, 5,4,3,1, 1,5,1,1,1,5,1,1, 0}; //基础乐谱int music2_time[38] = {2,1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1,0,0,0,0, 1,1,0,0, 0,0,1,1, 1,1,1,2,1,1,1,2, 2}; //乐谱节拍int music2_unit_HL[38] ={1,1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1, 1,1,1,1, 1,0,1,1,1,0,1,1, 1}; //乐谱�?? 中音music[2].num = 38; //乐谱总数//第四首音�?? 青花瓷片�??cnt++;strcpy(music[3].name, "青花瓷片选"); // 使用strcpy复制字符�?? 给音乐命�??int music3_unit[100] = {0,0,0,0, 0,5,5,3, 2,3,6,2, 3,5,3,2, 2,5,5,3,2,3,5,2, 3,5,2,1, 1,1,2,3, 5,6,5,4, 5,3,3,2,2,2,1,2, 1,1,2,1, 2,3,5,3, 3,3,5,5, 3,2,3,6,2,3,5,3, 2,2,5,5, 3,2,3,5, 2,3,5,2, 1,1,1,2,3,5,6,5, 4,5,3,3, 2,2,5,3, 2,2,2,1, 1,0,0,0}; //基础乐谱int music3_time[100] = {0,0,0,0, 0,0,0,0, 0,0,1,0, 0,0,0,2, 0,0,0,0,0,0,1,0, 0,0,0,2, 0,0,0,0, 0,0,0,0, 0,0,0,0,2,0,0,0, 0,0,0,0, 0,1,0,0, 2,0,0,0, 0,0,0,1,0,0,0,0, 2,0,0,0, 0,0,0,1, 0,0,0,0, 2,0,0,0,0,0,0,0, 0,0,0,0, 0,2,0,1, 0,0,0,1, 2,1,1,1}; //乐谱节拍for(int i =0;i<100;i++)music3_time[i] = music3_time[i]+1;int music3_unit_HL[100] ={ 1,1,1,1, 1,1,1,1, 1,1,0,1, 1,1,1,1, 1,1,1,1,1,1,0,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,0,1,1,1,1, 1,1,1,1, 1,1,1,0, 1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1, 1,1,0,1, 1,1,1,1, 1,1,1,1}; //乐谱�?? 中音music[3].num = 100; //乐谱总数for (int i = 0; i < MAX_unit_num; i++) {//将乐谱保存进结构�??if(i<music[0].num){//确保数据正确music[0].unit[i] =music0_unit[i];music[0].unit_HL[i] =music0_unit_HL[i];music[0].time[i] =music0_time[i];}//将乐谱保存进结构�??if(i<music[1].num){//确保数据正确music[1].unit[i] =music1_unit[i];music[1].unit_HL[i] =music1_unit_HL[i];music[1].time[i] =music1_time[i];}//将乐谱保存进结构�??if(i<music[2].num){//确保数据正确music[2].unit[i] =music2_unit[i];music[2].unit_HL[i] =music2_unit_HL[i];music[2].time[i] =music2_time[i];}//将乐谱保存进结构�??if(i<music[3].num){//确保数据正确music[3].unit[i] =music3_unit[i];music[3].unit_HL[i] =music3_unit_HL[i];music[3].time[i] =music3_time[i];}}return cnt;
}//播放�?? N首音�?? 音量�?? X 0 - 100
void play_music(int n, int x){static int ni = 0; //用于判断 是否换了音乐static int cnt = 0; //记录播放到哪�??�?? 音节if(ni != n ){//如果音乐换了ni = n;cnt = 0;__HAL_TIM_SET_COMPARE(&htim4,TIM_CHANNEL_1,0);//设置音量HAL_Delay(1000);//}//int value = tone[music[n].unit_HL[cnt]][music[n].unit[cnt]]; //获取频率if(flag == 1){ //接受到一个音节结�??flag = 0; //复位Beat_num = music[n].time[cnt]; //这个音需要多少个半拍LED_BEEP(music[n].unit[cnt]); //LED随音节变动�?�变�??if(music[n].time[cnt] == 0){//如果�?? 1/4�??Beat_speed_n = Beat_speed /2;}else{//如果没有1/4�??Beat_speed_n = Beat_speed;}//if(value != 0)//如果有频率�?�执行,没有者只更新 时间�??__HAL_TIM_SET_AUTORELOAD(&htim4,value); //自动加载频率�??cnt ++; //可进行下�??次音�??if(cnt >= music[n].num){ //如果�??个音节播放完�??cnt = 0;//重新播放//__HAL_TIM_SET_COMPARE(&htim4,TIM_CHANNEL_1,0);//设置音量//HAL_Delay(500);//}}//__HAL_TIM_SET_COMPARE(&htim4,TIM_CHANNEL_1,x * (value/100));//设置音量__HAL_TIM_SET_COMPARE(&htim4,TIM_CHANNEL_1,(value/10)*x);//设置音量
}/* USER CODE END 0 *//*** @brief The application entry point.* @retval int*/
int main(void)
{/* USER CODE BEGIN 1 *//* USER CODE END 1 *//* MCU Configuration--------------------------------------------------------*//* Reset of all peripherals, Initializes the Flash interface and the Systick. */HAL_Init();/* USER CODE BEGIN Init *//* USER CODE END Init */if(IS_ENGINEERING_BOOT_MODE()){/* Configure the system clock */SystemClock_Config();}/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_TIM4_Init();MX_TIM2_Init();/* USER CODE BEGIN 2 */tone_init(); //初始化音量频�??list_max = music_init();//更新乐谱HAL_TIM_PWM_Start(&htim4, TIM_CHANNEL_1); //�??启PWMHAL_TIM_Base_Start_IT(&htim2); //�??启定时器�??/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */if(EN == 1)//�??启音�??play_music(list,Low_volume);else__HAL_TIM_SET_COMPARE(&htim4,TIM_CHANNEL_1,0);//设置音量//EN = 1;//play_music(0,5);}/* USER CODE END 3 */
}/*** @brief System Clock Configuration* @retval None*/
void SystemClock_Config(void)
{RCC_OscInitTypeDef RCC_OscInitStruct = {0};RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};/** Initializes the RCC Oscillators according to the specified parameters* in the RCC_OscInitTypeDef structure.*/RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;RCC_OscInitStruct.HSIState = RCC_HSI_ON;RCC_OscInitStruct.HSICalibrationValue = 16;RCC_OscInitStruct.HSIDivValue = RCC_HSI_DIV1;RCC_OscInitStruct.LSIState = RCC_LSI_ON;RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;RCC_OscInitStruct.PLL2.PLLState = RCC_PLL_NONE;RCC_OscInitStruct.PLL3.PLLState = RCC_PLL_NONE;RCC_OscInitStruct.PLL4.PLLState = RCC_PLL_NONE;if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK){Error_Handler();}/** RCC Clock Config*/RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_ACLK|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2|RCC_CLOCKTYPE_PCLK3|RCC_CLOCKTYPE_PCLK4|RCC_CLOCKTYPE_PCLK5;RCC_ClkInitStruct.AXISSInit.AXI_Clock = RCC_AXISSOURCE_HSI;RCC_ClkInitStruct.AXISSInit.AXI_Div = RCC_AXI_DIV1;RCC_ClkInitStruct.MCUInit.MCU_Clock = RCC_MCUSSOURCE_HSI;RCC_ClkInitStruct.MCUInit.MCU_Div = RCC_MCU_DIV1;RCC_ClkInitStruct.APB4_Div = RCC_APB4_DIV1;RCC_ClkInitStruct.APB5_Div = RCC_APB5_DIV1;RCC_ClkInitStruct.APB1_Div = RCC_APB1_DIV1;RCC_ClkInitStruct.APB2_Div = RCC_APB2_DIV1;RCC_ClkInitStruct.APB3_Div = RCC_APB3_DIV1;if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct) != HAL_OK){Error_Handler();}
}/*** @brief TIM2 Initialization Function* @param None* @retval None*/
static void MX_TIM2_Init(void)
{/* USER CODE BEGIN TIM2_Init 0 *//* USER CODE END TIM2_Init 0 */TIM_ClockConfigTypeDef sClockSourceConfig = {0};TIM_MasterConfigTypeDef sMasterConfig = {0};/* USER CODE BEGIN TIM2_Init 1 *//* USER CODE END TIM2_Init 1 */htim2.Instance = TIM2;htim2.Init.Prescaler = 6400-1;htim2.Init.CounterMode = TIM_COUNTERMODE_UP;htim2.Init.Period = 1000-1;htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;if (HAL_TIM_Base_Init(&htim2) != HAL_OK){Error_Handler();}sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK){Error_Handler();}sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK){Error_Handler();}/* USER CODE BEGIN TIM2_Init 2 *//* USER CODE END TIM2_Init 2 */}/*** @brief TIM4 Initialization Function* @param None* @retval None*/
static void MX_TIM4_Init(void)
{/* USER CODE BEGIN TIM4_Init 0 *//* USER CODE END TIM4_Init 0 */TIM_ClockConfigTypeDef sClockSourceConfig = {0};TIM_MasterConfigTypeDef sMasterConfig = {0};TIM_OC_InitTypeDef sConfigOC = {0};/* USER CODE BEGIN TIM4_Init 1 *//* USER CODE END TIM4_Init 1 */htim4.Instance = TIM4;htim4.Init.Prescaler = 640-1;htim4.Init.CounterMode = TIM_COUNTERMODE_UP;htim4.Init.Period = 100-1;htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;if (HAL_TIM_Base_Init(&htim4) != HAL_OK){Error_Handler();}sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;if (HAL_TIM_ConfigClockSource(&htim4, &sClockSourceConfig) != HAL_OK){Error_Handler();}if (HAL_TIM_PWM_Init(&htim4) != HAL_OK){Error_Handler();}sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK){Error_Handler();}sConfigOC.OCMode = TIM_OCMODE_PWM1;sConfigOC.Pulse = 0;sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;if (HAL_TIM_PWM_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_1) != HAL_OK){Error_Handler();}/* USER CODE BEGIN TIM4_Init 2 *//* USER CODE END TIM4_Init 2 */HAL_TIM_MspPostInit(&htim4);}/*** @brief GPIO Initialization Function* @param None* @retval None*/
static void MX_GPIO_Init(void)
{GPIO_InitTypeDef GPIO_InitStruct = {0};/* GPIO Ports Clock Enable */__HAL_RCC_GPIOF_CLK_ENABLE();__HAL_RCC_GPIOC_CLK_ENABLE();__HAL_RCC_GPIOI_CLK_ENABLE();__HAL_RCC_GPIOG_CLK_ENABLE();__HAL_RCC_GPIOE_CLK_ENABLE();__HAL_RCC_GPIOB_CLK_ENABLE();/*Configure GPIO pin Output Level */HAL_GPIO_WritePin(GPIOF, GPIO_PIN_1|GPIO_PIN_6, GPIO_PIN_RESET);/*Configure GPIO pin Output Level */HAL_GPIO_WritePin(GPIOC, GPIO_PIN_7, GPIO_PIN_RESET);/*Configure GPIO pin Output Level */HAL_GPIO_WritePin(GPIOI, GPIO_PIN_11|GPIO_PIN_10, GPIO_PIN_RESET);/*Configure GPIO pins : PF1 PF6 */GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_6;GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);/*Configure GPIO pin : PC7 */GPIO_InitStruct.Pin = GPIO_PIN_7;GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);/*Configure GPIO pins : PI11 PI10 */GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_10;GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);/*Configure GPIO pins : PG2 PG0 PG1 */GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_0|GPIO_PIN_1;GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;GPIO_InitStruct.Pull = GPIO_PULLUP;HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);/*Configure GPIO pin : PE9 */GPIO_InitStruct.Pin = GPIO_PIN_9;GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;GPIO_InitStruct.Pull = GPIO_PULLUP;HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);/* EXTI interrupt init*/HAL_NVIC_SetPriority(EXTI0_IRQn, 2, 0);HAL_NVIC_EnableIRQ(EXTI0_IRQn);HAL_NVIC_SetPriority(EXTI1_IRQn, 2, 0);HAL_NVIC_EnableIRQ(EXTI1_IRQn);HAL_NVIC_SetPriority(EXTI2_IRQn, 2, 0);HAL_NVIC_EnableIRQ(EXTI2_IRQn);HAL_NVIC_SetPriority(EXTI9_IRQn, 1, 0);HAL_NVIC_EnableIRQ(EXTI9_IRQn);}/* USER CODE BEGIN 4 *//* USER CODE END 4 *//*** @brief This function is executed in case of error occurrence.* @retval None*/
void Error_Handler(void)
{/* USER CODE BEGIN Error_Handler_Debug *//* User can add his own implementation to report the HAL error return state */__disable_irq();while (1){}/* USER CODE END Error_Handler_Debug */
}#ifdef USE_FULL_ASSERT
/*** @brief Reports the name of the source file and the source line number* where the assert_param error has occurred.* @param file: pointer to the source file name* @param line: assert_param error line source number* @retval None*/
void assert_failed(uint8_t *file, uint32_t line)
{/* USER CODE BEGIN 6 *//* User can add his own implementation to report the file name and line number,ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) *//* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT *//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
stm32mp1xx_it.c
/* USER CODE BEGIN Header */
/********************************************************************************* @file stm32mp1xx_it.c* @brief Interrupt Service Routines.******************************************************************************* @attention** <h2><center>© Copyright (c) 2024 STMicroelectronics.* All rights reserved.</center></h2>** This software component is licensed by ST under BSD 3-Clause license,* the "License"; You may not use this file except in compliance with the* License. You may obtain a copy of the License at:* opensource.org/licenses/BSD-3-Clause********************************************************************************/
/* USER CODE END Header *//* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32mp1xx_it.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD *//* USER CODE END TD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD *//* USER CODE END PD *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM *//* USER CODE END PM *//* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV *//* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
int time_100ms_cnt = 0; //0.1s计数�??
int Beat_speed = 5; //节拍速度,代表半个节拍需要多少个0.1s
int Beat_speed_n = 0; //实际执行的节�??int Beat_num = 2; //这个�?? �??要多少就 半拍
int flag = 0; //当其等于 1 时,表示�??个音结束
int EN = 0; //使能信号,用于开启整个音�??
int list = 0; //音乐列表
int list_max = 0; //音乐总数
int Low_volume = 5; //音量大小
#define Low_volume_cnt 3 //音量大小�??10增加/* USER CODE END 0 *//* External variables --------------------------------------------------------*/
extern TIM_HandleTypeDef htim2;
/* USER CODE BEGIN EV *//* USER CODE END EV *//******************************************************************************/
/* Cortex-M4 Processor Interruption and Exception Handlers */
/******************************************************************************/
/*** @brief This function handles Non maskable interrupt.*/
void NMI_Handler(void)
{/* USER CODE BEGIN NonMaskableInt_IRQn 0 *//* USER CODE END NonMaskableInt_IRQn 0 *//* USER CODE BEGIN NonMaskableInt_IRQn 1 */while (1){}/* USER CODE END NonMaskableInt_IRQn 1 */
}/*** @brief This function handles Hard fault interrupt.*/
void HardFault_Handler(void)
{/* USER CODE BEGIN HardFault_IRQn 0 *//* USER CODE END HardFault_IRQn 0 */while (1){/* USER CODE BEGIN W1_HardFault_IRQn 0 *//* USER CODE END W1_HardFault_IRQn 0 */}
}/*** @brief This function handles Memory management fault.*/
void MemManage_Handler(void)
{/* USER CODE BEGIN MemoryManagement_IRQn 0 *//* USER CODE END MemoryManagement_IRQn 0 */while (1){/* USER CODE BEGIN W1_MemoryManagement_IRQn 0 *//* USER CODE END W1_MemoryManagement_IRQn 0 */}
}/*** @brief This function handles Pre-fetch fault, memory access fault.*/
void BusFault_Handler(void)
{/* USER CODE BEGIN BusFault_IRQn 0 *//* USER CODE END BusFault_IRQn 0 */while (1){/* USER CODE BEGIN W1_BusFault_IRQn 0 *//* USER CODE END W1_BusFault_IRQn 0 */}
}/*** @brief This function handles Undefined instruction or illegal state.*/
void UsageFault_Handler(void)
{/* USER CODE BEGIN UsageFault_IRQn 0 *//* USER CODE END UsageFault_IRQn 0 */while (1){/* USER CODE BEGIN W1_UsageFault_IRQn 0 *//* USER CODE END W1_UsageFault_IRQn 0 */}
}/*** @brief This function handles System service call via SWI instruction.*/
void SVC_Handler(void)
{/* USER CODE BEGIN SVCall_IRQn 0 *//* USER CODE END SVCall_IRQn 0 *//* USER CODE BEGIN SVCall_IRQn 1 *//* USER CODE END SVCall_IRQn 1 */
}/*** @brief This function handles Debug monitor.*/
void DebugMon_Handler(void)
{/* USER CODE BEGIN DebugMonitor_IRQn 0 *//* USER CODE END DebugMonitor_IRQn 0 *//* USER CODE BEGIN DebugMonitor_IRQn 1 *//* USER CODE END DebugMonitor_IRQn 1 */
}/*** @brief This function handles Pendable request for system service.*/
void PendSV_Handler(void)
{/* USER CODE BEGIN PendSV_IRQn 0 *//* USER CODE END PendSV_IRQn 0 *//* USER CODE BEGIN PendSV_IRQn 1 *//* USER CODE END PendSV_IRQn 1 */
}/*** @brief This function handles System tick timer.*/
void SysTick_Handler(void)
{/* USER CODE BEGIN SysTick_IRQn 0 *//* USER CODE END SysTick_IRQn 0 */HAL_IncTick();/* USER CODE BEGIN SysTick_IRQn 1 *//* USER CODE END SysTick_IRQn 1 */
}/******************************************************************************/
/* STM32MP1xx Peripheral Interrupt Handlers */
/* Add here the Interrupt Handlers for the used peripherals. */
/* For the available peripheral interrupt handler names, */
/* please refer to the startup file (startup_stm32mp1xx.s). */
/******************************************************************************//*** @brief This function handles EXTI line0 interrupt.*/
void EXTI0_IRQHandler(void)
{/* USER CODE BEGIN EXTI0_IRQn 0 */if(HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_0) == 0)//确保数据稳定{//每次按下解决 音量�?? Low_volume_cntLow_volume = Low_volume + Low_volume_cnt;if(Low_volume >= 10)Low_volume = 0;}/* USER CODE END EXTI0_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0);/* USER CODE BEGIN EXTI0_IRQn 1 *//* USER CODE END EXTI0_IRQn 1 */
}/*** @brief This function handles EXTI line1 interrupt.*/
void EXTI1_IRQHandler(void)
{/* USER CODE BEGIN EXTI1_IRQn 0 */if(HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_1) == 0)//确保数据稳定{//控制音乐播放的�?�度static int i = 0;i++;//倍数计算公式 1 + (1 - (新的节拍速度 / 原来的节拍�?�度))switch(i){case 0:{Beat_speed = 5; //0.5s半个节拍,正常+�?�度break;}case 1:{Beat_speed = 4; //1.2倍数break;}case 2:{Beat_speed = 3; //约等�?? 1.5倍数break;}case 3:{Beat_speed = 1; //约等�?? 2 倍数break;}case 4:{Beat_speed = 6; //约等�?? 0.8 倍数break;}case 5:{Beat_speed = 7; //约等�?? 0.6 倍数break;}default:{Beat_speed = 5; //0.5s半个节拍,正常�?�度i=0;break;}}}/* USER CODE END EXTI1_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_1);/* USER CODE BEGIN EXTI1_IRQn 1 *//* USER CODE END EXTI1_IRQn 1 */
}/*** @brief This function handles EXTI line2 interrupt.*/
void EXTI2_IRQHandler(void)
{/* USER CODE BEGIN EXTI2_IRQn 0 *///按下�??次音乐进入下�??�??if(HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_2) == 0)//确保数据稳定{list++;if(list > list_max){list = 0;}}/* USER CODE END EXTI2_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_2);/* USER CODE BEGIN EXTI2_IRQn 1 *//* USER CODE END EXTI2_IRQn 1 */
}/*** @brief This function handles TIM2 global interrupt.*/
void TIM2_IRQHandler(void)
{/* USER CODE BEGIN TIM2_IRQn 0 */if(EN == 1)time_100ms_cnt++;elsetime_100ms_cnt = time_100ms_cnt; //其余状�?�不计数if(time_100ms_cnt >= Beat_speed_n * Beat_num){ //这个音节结束time_100ms_cnt = 0;flag = 1; //发�?�音节结束信�??}/* USER CODE END TIM2_IRQn 0 */HAL_TIM_IRQHandler(&htim2);/* USER CODE BEGIN TIM2_IRQn 1 *//* USER CODE END TIM2_IRQn 1 */
}/*** @brief This function handles EXTI line9 interrupt.*/
void EXTI9_IRQHandler(void)
{/* USER CODE BEGIN EXTI9_IRQn 0 */if(HAL_GPIO_ReadPin(GPIOF, GPIO_PIN_9) == 0)//确保数据稳定EN = !EN;/* USER CODE END EXTI9_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_9);/* USER CODE BEGIN EXTI9_IRQn 1 *//* USER CODE END EXTI9_IRQn 1 */
}/*** @brief This function handles RCC wake-up interrupt.*/
void RCC_WAKEUP_IRQHandler(void)
{/* USER CODE BEGIN RCC_WAKEUP_IRQn 0 *//* USER CODE END RCC_WAKEUP_IRQn 0 */HAL_RCC_WAKEUP_IRQHandler();/* USER CODE BEGIN RCC_WAKEUP_IRQn 1 *//* USER CODE END RCC_WAKEUP_IRQn 1 */
}/* USER CODE BEGIN 1 *//* USER CODE END 1 */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
六、总结
这是一个基于STM32MP157A单片机的音乐盒设计较为全面和详细。主要包括以下几个方面:
-
硬件设计:
- 使用STM32MP157A单片机作为核心控制器
- 采用TIM2定时器产生0.1s中断控制节拍
- 使用TIM4输出PWM信号驱动蜂鸣器播放音乐
- 使用GPIO输入检测按键操作
-
软件设计:
- 初始化音乐频率数据表,包括低音、中音和高音
- 定义乐谱结构体,保存不同音乐的音符和节拍信息
- 编写播放音乐的函数,根据乐谱信息控制蜂鸣器输出
- 编写LED灯随音乐闪烁的函数
- 实现通过按键控制音乐播放、速度、音量的功能
-
中断处理:
- 使用外部中断处理按键输入,切换音乐、调节速度和音量
- 使用定时器中断处理节拍控制,根据乐谱信息播放音乐
-
整体架构:
- 将变量和函数划分到main.c和stm32mp1xx_it.c两个文件中,方便管理
- 通过外部变量在两个文件中交换信息
- 整体设计思路清晰,功能模块化,可扩展性强
总的来说,这个音乐盒的设计充分==利用了STM32MP157A单片机的各种外设资源,实现了一个功能丰富的音乐播放器。对于初学者来说,这个对于了解定时器和PWM有一定帮助。
帮助:关于电脑蓝屏解决方法(ST-LINK/ J-Link)