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【STM32】无源蜂鸣器播放音乐《千与千寻》，HAL库

news 2025/1/10 14:15:50

目录

一、工程链接

二、简单介绍

主要特点：

应用：

驱动电路：

三、原理图

四、cubeMX配置

时钟配置

五、keil配置

六、驱动编写

演奏函数

主函数编写

七、效果展示

八、驱动附录

music.h

music.c

一、工程链接

STM32无源蜂鸣器播放音乐《千与千寻》资源-CSDN文库

二、简单介绍

        无源蜂鸣器（Passive Buzzer）是一种没有内建振荡器的蜂鸣器。它通常需要外部的信号来驱动发声。在工作时，无源蜂鸣器会根据输入的脉冲信号频率和波形来产生音频信号。简单来说，它通过震动产生声音，其声音的频率取决于输入信号的频率。

主要特点：

  1. 驱动方式：无源蜂鸣器需要一个方波信号或音频信号来驱动，通常由微控制器（如STM32）或其他信号源提供。
  2. 音调调节：音调是通过改变输入信号的频率来控制的，频率越高，声音越尖锐；频率越低，声音越低沉。
  3. 节能：无源蜂鸣器比有源蜂鸣器更节能，因为它没有内部的震荡电路，工作时消耗的功率较低。
  4. 灵活性：可以通过改变驱动信号的频率和占空比来调整音调和响度，适应不同的应用需求。

应用：

  • 在各种警告和提醒系统中，如电池电量低、设备故障提示等。
  • 用于电子设备中发出提示音，例如遥控器、计算器等。
  • 通过合成音调来播放简单的音乐或警报声。

驱动电路：

  • PWM（脉宽调制）驱动：微控制器生成一定频率的PWM信号，通过滤波器将其转化为模拟信号来驱动无源蜂鸣器。
  • 时钟信号驱动：无源蜂鸣器也可以直接用一个方波信号驱动，方波的频率决定声音的频率。

与有源蜂鸣器不同，使用无源蜂鸣器时，需要编程控制输出信号的频率和波形，因此提供了更大的灵活性来生成不同的音调和音效。

三、原理图

这里笔者采用的是自己绘制的STM32F407VET6开发板，无源蜂鸣器电路部分如下图所示：

BEEP引脚连接至MCU的PB4引脚

四、cubeMX配置

时钟配置

开启定时器9作为1ms定时器

定时器3的通道1作为PWM输出，分频系数设置为84-1，因为定时器3是挂载在APB1总线上的

开启晶振，调试口等常规项的配置就不赘述了

五、keil配置

这里笔者使用了自己写的keil脚本，添加music.c和music.h文件即可

六、驱动编写

笔者作为一个音乐小白，最基本的理解是：想用无源蜂鸣器来演奏音乐，需要控制声音的频率，持续时间。方便起见，这里参考了midi音乐的协议规范。

typedef struct
{uint8_t onoff; /* on or off*/uint8_t freq;  /* frequence */uint16_t tick; /* time */
}midiType;

定义三个参数：开启和关闭音符，频率，时间

配置PWM波的频率来改变无源蜂鸣器的声调高低，改变PWM波的持续时间来改变每一个音符的持续时间。

演奏函数

void play(midiType* mid)
{cnt++;if (cnt >= mid[noteIdx].tick){switch (mid[noteIdx].onoff){case 0x80:{HAL_TIM_PWM_Stop(&htim3, TIM_CHANNEL_1);break;}case 0x90:{__HAL_TIM_SET_AUTORELOAD(&htim3, 1000000u / midiFreq_table[mid[noteIdx].freq]);__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_1, 500000u / midiFreq_table[mid[noteIdx].freq]);HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1);break;}default:break;}noteIdx++;cnt = 0;}
}

主函数编写

在1ms的中断里反复地调用这个play函数，就可以完成音乐的播放了

/*** @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 *//* Configure the system clock */SystemClock_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_TIM3_Init();MX_SPI2_Init();MX_TIM9_Init();/* USER CODE BEGIN 2 */
HAL_TIM_Base_Start_IT(&htim3);
HAL_TIM_Base_Start_IT(&htim9);/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */
}/*** @brief System Clock Configuration* @retval None*/
void SystemClock_Config(void)
{RCC_OscInitTypeDef RCC_OscInitStruct = {0};RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};/** Configure the main internal regulator output voltage*/__HAL_RCC_PWR_CLK_ENABLE();__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);/** Initializes the RCC Oscillators according to the specified parameters* in the RCC_OscInitTypeDef structure.*/RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;RCC_OscInitStruct.HSEState = RCC_HSE_ON;RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;RCC_OscInitStruct.PLL.PLLM = 4;RCC_OscInitStruct.PLL.PLLN = 168;RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;RCC_OscInitStruct.PLL.PLLQ = 4;if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK){Error_Handler();}/** Initializes the CPU, AHB and APB buses clocks*/RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK){Error_Handler();}
}/* USER CODE BEGIN 4 */void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{static unsigned int cnt_1ms = 0;static unsigned char cnt = 0;if (htim == &htim3){}if (htim == &htim9){cnt_1ms++;if (cnt_1ms >= 100){cnt_1ms = 0;cnt = cnt % 8;cnt++;}play(Spirited_Away);}
}/* USER CODE END 4 */

七、效果展示

Spirited_Away

八、驱动附录

music.h

#ifndef MUSIC_H
#define MUSIC_H#include "main.h"
#include "tim.h"
#include "stdint.h"typedef struct
{uint8_t onoff; /* on or off*/uint8_t freq;  /* frequence */uint16_t tick; /* time */
}midiType;extern const midiType Spirited_Away[];void play(midiType* mid);#endif

music.c

#include "music.h"uint16_t midiFreq_table[] = 
{8,9,9,10,10,11,12,12,13,14,15,15,16,17,18,19,21,22,23,24,26,27,29,31,33,35,37,39,41,44,46,49,52,55,58,62,65,69,74,78,82,87,92,98,104,110,116,123,130,138,146,155,164,174,184,195,207,220,233,247,261,277,293,311,329,349,370,392,415,440,466,493,523,554,587,622,659,698,740,784,830,880,932,987,1047,1109,1175,1245,1319,1397,1480,1568,1661,1760,1865,1975,2093,2217,2349,2489,2637,2794,2960,3136,3322,3520,3729,3951,4186,4435,4698,4978,5274,5588,5920,6272,6645,7040,7458,7902,8372,8870,9397,9956,10548,11176,11840,12544
};const midiType Spirited_Away[] = 
{
0x90,0x59,0x14A0,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x60,0x0018,
0x80,0x60,0x02B8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x00D8,
0x90,0x56,0x0018,
0x80,0x56,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x02B8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x58,0x0018,
0x80,0x58,0x0360,
0x90,0x58,0x0060,
0x80,0x58,0x01B0,
0x90,0x56,0x0030,
0x80,0x56,0x01B0,
0x90,0x58,0x0030,
0x80,0x58,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x54,0x0018,
0x80,0x54,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x01B0,
0x90,0x5E,0x0030,
0x80,0x5E,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x0360,
0x90,0x59,0x0060,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x60,0x0018,
0x80,0x60,0x02B8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x00D8,
0x90,0x56,0x0018,
0x80,0x56,0x00D8,
0x90,0x56,0x0018,
0x80,0x56,0x01B0,
0x90,0x58,0x0030,
0x80,0x58,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x54,0x0018,
0x80,0x54,0x0360,
0x90,0x54,0x0060,
0x80,0x54,0x01B0,
0x90,0x56,0x0030,
0x80,0x56,0x01B0,
0x90,0x58,0x0030,
0x80,0x58,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x54,0x0018,
0x80,0x54,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x01B0,
0x90,0x5E,0x0030,
0x80,0x5E,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x0750,
0x90,0x5D,0x0210,
0x80,0x5D,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x00D8,
0x90,0x60,0x0018,
0x80,0x60,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x00D8,
0x90,0x62,0x0018,
0x80,0x62,0x00D8,
0x90,0x60,0x0018,
0x80,0x60,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x01B0,
0x90,0x5D,0x0030,
0x80,0x5D,0x01B0,
0x90,0x5D,0x0030,
0x80,0x5D,0x01B0,
0x90,0x5D,0x0030,
0x80,0x5D,0x01B0,
0x90,0x5D,0x0030,
0x80,0x5D,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x00D8,
0x90,0x58,0x0018,
0x80,0x58,0x00D8,
0x90,0x56,0x0018,
0x80,0x56,0x01B0,
0x90,0x58,0x0030,
0x80,0x58,0x01B0,
0x90,0x58,0x0030,
0x80,0x58,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x0360,
0x90,0x5D,0x0060,
0x80,0x5D,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x00D8,
0x90,0x60,0x0018,
0x80,0x60,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x00D8,
0x90,0x62,0x0018,
0x80,0x62,0x00D8,
0x90,0x60,0x0018,
0x80,0x60,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x01B0,
0x90,0x5D,0x0030,
0x80,0x5D,0x01B0,
0x90,0x5D,0x0030,
0x80,0x5D,0x01B0,
0x90,0x5D,0x0030,
0x80,0x5D,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x58,0x0018,
0x80,0x58,0x00D8,
0x90,0x56,0x0018,
0x80,0x56,0x01B0,
0x90,0x56,0x0030,
0x80,0x56,0x00D8,
0x90,0x58,0x0018,
0x80,0x58,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x54,0x0018,
0x80,0x54,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x0288,
0x90,0x5B,0x0048,
0x80,0x5B,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x0360,
0x90,0x59,0x0BA0,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x60,0x0018,
0x80,0x60,0x02B8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x00D8,
0x90,0x56,0x0018,
0x80,0x56,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x02B8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x58,0x0018,
0x80,0x58,0x0360,
0x90,0x59,0x0060,
0x80,0x59,0x00D8,
0x90,0x58,0x0018,
0x80,0x58,0x00D8,
0x90,0x56,0x0018,
0x80,0x56,0x01B0,
0x90,0x58,0x0030,
0x80,0x58,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x54,0x0018,
0x80,0x54,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x01B0,
0x90,0x5E,0x0030,
0x80,0x5E,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x0360,
0x90,0x59,0x0060,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x60,0x0018,
0x80,0x60,0x02B8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x01B0,
0x90,0x60,0x0030,
0x80,0x60,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x56,0x0018,
0x80,0x56,0x00D8,
0x90,0x56,0x0018,
0x80,0x56,0x01B0,
0x90,0x58,0x0030,
0x80,0x58,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x54,0x0018,
0x80,0x54,0x0360,
0x90,0x54,0x0060,
0x80,0x54,0x01B0,
0x90,0x56,0x0030,
0x80,0x56,0x01B0,
0x90,0x58,0x0030,
0x80,0x58,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x54,0x0018,
0x80,0x54,0x01B0,
0x90,0x59,0x0030,
0x80,0x59,0x01B0,
0x90,0x5B,0x0030,
0x80,0x5B,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5E,0x0018,
0x80,0x5E,0x01B0,
0x90,0x5E,0x0030,
0x80,0x5E,0x00D8,
0x90,0x5D,0x0018,
0x80,0x5D,0x00D8,
0x90,0x5B,0x0018,
0x80,0x5B,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x00D8,
0x90,0x59,0x0018,
0x80,0x59,0x0360,
0x90,0x69,0x0BA0,
0x80,0x69,0x00D8,
0x90,0x6A,0x0018,
0x80,0x6A,0x00D8,
0x90,0x6C,0x0018,
0x80,0x6C,0x01B0,
0x90,0x6C,0x0030,
0x80,0x6C,0x01B0,
0x90,0x6C,0x0030,
0x80,0x6C,0x01B0,
0x90,0x6C,0x0030,
0x80,0x6C,0x01B0,
0x90,0x6C,0x0030,
0x80,0x6C,0x00D8,
0x90,0x6E,0x0018,
0x80,0x6E,0x00D8,
0x90,0x6C,0x0018,
0x80,0x6C,0x00D8,
0x90,0x6A,0x0018,
0x80,0x6A,0x00D8,
0x90,0x69,0x0018,
0x80,0x69,0x01B0,
0x90,0x69,0x0030,
0x80,0x69,0x01B0,
0x90,0x69,0x0030,
0x80,0x69,0x01B0,
0x90,0x69,0x0030,
0x80,0x69,0x01B0,
0x90,0x69,0x0030,
0x80,0x69,0x00D8,
0x90,0x6A,0x0018,
0x80,0x6A,0x00D8,
0x90,0x69,0x0018,
0x80,0x69,0x00D8,
0x90,0x67,0x0018,
0x80,0x67,0x00D8,
0x90,0x65,0x0018,
0x80,0x65,0x01B0,
0x90,0x65,0x0030,
0x80,0x65,0x01B0,
0x90,0x65,0x0030,
0x80,0x65,0x00D8,
0x90,0x64,0x0018,
0x80,0x64,0x00D8,
0x90,0x62,0x0018,
0x80,0x62,0x01B0,
0x90,0x64,0x0030,
0x80,0x64,0x01B0,
0x90,0x64,0x0030,
0x80,0x64,0x00D8,
0x90,0x65,0x0018,
0x80,0x65,0x00D8,
0x90,0x67,0x0018,
0x80,0x67,0x01B0,
0x90,0x67,0x0030,
0x80,0x67,0x00D8,
0x90,0x69,0x0018,
0x80,0x69,0x00D8,
0x90,0x67,0x0018,
0x80,0x67,0x00D8,
0x90,0x69,0x0018,
0x80,0x69,0x00D8,
0x90,0x67,0x0018,
0x80,0x67,0x0360,
0x90,0x69,0x0060,
0x80,0x69,0x00D8,
0x90,0x6A,0x0018,
0x80,0x6A,0x00D8,
0x90,0x6C,0x0018,
0x80,0x6C,0x01B0,
0x90,0x6C,0x0030,
0x80,0x6C,0x01B0,
0x90,0x6C,0x0030,
0x80,0x6C,0x01B0,
0x90,0x6C,0x0030,
0x80,0x6C,0x01B0,
0x90,0x6C,0x0030,
0x80,0x6C,0x00D8,
0x90,0x6E,0x0018,
0x80,0x6E,0x00D8,
0x90,0x6C,0x0018,
0x80,0x6C,0x00D8,
0x90,0x6A,0x0018,
0x80,0x6A,0x00D8,
0x90,0x69,0x0018,
0x80,0x69,0x01B0,
0x90,0x69,0x0030,
0x80,0x69,0x01B0,
0x90,0x69,0x0030,
0x80,0x69,0x01B0,
0x90,0x69,0x0030,
0x80,0x69,0x00D8,
0x90,0x6A,0x0018,
0x80,0x6A,0x00D8,
0x90,0x69,0x0018,
0x80,0x69,0x00D8,
0x90,0x67,0x0018,
0x80,0x67,0x00D8,
0x90,0x65,0x0018,
0x80,0x65,0x00D8,
0x90,0x64,0x0018,
0x80,0x64,0x00D8,
0x90,0x62,0x01F8,
0x80,0x62,0x00D8,
0x90,0x64,0x0018,
0x80,0x64,0x00D8,
0x90,0x65,0x0018,
0x80,0x65,0x00D8,
0x90,0x67,0x0018,
0x80,0x67,0x00D8,
0x90,0x60,0x0018,
0x80,0x60,0x01B0,
0x90,0x65,0x0030,
0x80,0x65,0x01B0,
0x90,0x67,0x0030,
0x80,0x67,0x00D8,
0x90,0x69,0x0018,
0x80,0x69,0x00D8,
0x90,0x67,0x0018,
0x80,0x67,0x0360,
0x90,0x67,0x0060,
0x80,0x67,0x00D8,
0x90,0x65,0x0018,
0x80,0x65,0x00D8,
0x90,0x65,0x0018,
0x80,0x59,0x0510,
0x90,0x59,0x0090,
0x80,0x65,0x0360,};static int16_t cnt = 0;
static uint16_t noteIdx = 1;void play(midiType* mid)
{cnt++;if (cnt >= mid[noteIdx].tick){switch (mid[noteIdx].onoff){case 0x80:{HAL_TIM_PWM_Stop(&htim3, TIM_CHANNEL_1);break;}case 0x90:{__HAL_TIM_SET_AUTORELOAD(&htim3, 1000000u / midiFreq_table[mid[noteIdx].freq]);__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_1, 500000u / midiFreq_table[mid[noteIdx].freq]);HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1);break;}default:break;}noteIdx++;cnt = 0;}
}

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