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求大神帮忙看一下STM32F103VET6的音乐播放程序 音调总是不对

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ID:61140 发表于 2026-8-31 18:44 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
自己做了一个STM32F103VET6播放音乐的程序，但音调总是不对，听着根本不是那回事，不知道哪里出错了，求教大神
  1. /* USER CODE BEGIN Header */
  2. /**
  3.   ******************************************************************************
  4.   * @file           : main.c
  5.   * @brief          : Main program body
  6.   ******************************************************************************
  7.   * @attention
  8.   *
  9.   * Copyright (c) 2026 STMicroelectronics.
  10.   * All rights reserved.
  11.   *
  12.   * This software is licensed under terms that can be found in the LICENSE file
  13.   * in the root directory of this software component.
  14.   * If no LICENSE file comes with this software, it is provided AS-IS.
  15.   ******************************************************************************
  16.   */
  17. /* USER CODE END Header */
  18. /* Includes ------------------------------------------------------------------*/
  19. #include "main.h"
  20. /* Private includes ----------------------------------------------------------*/
  21. /* USER CODE BEGIN Includes */
  22. /* USER CODE END Includes */
  23. /* Private typedef -----------------------------------------------------------*/
  24. /* USER CODE BEGIN PTD */
  25. typedef struct
  26. {
  27.     const uint16_t *wave;
  28.     uint16_t len;
  29.     uint16_t beat_ms;
  30. }MusicNote_t;
  31. /* USER CODE END PTD */
  32. /* Private define ------------------------------------------------------------*/
  33. /* USER CODE BEGIN PD */
  34. /* USER CODE END PD */
  35. /* Private macro -------------------------------------------------------------*/
  36. /* USER CODE BEGIN PM */
  37. /* USER CODE END PM */
  38. /* Private variables ---------------------------------------------------------*/
  39. DAC_HandleTypeDef hdac;
  40. DMA_HandleTypeDef hdma_dac_ch2;
  41. TIM_HandleTypeDef htim6;

  43. /* USER CODE BEGIN PV */
  44. //C4 1 do 262Hz
  45. const uint16_t note_C4[38]={
  46. 3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,
  47. 600,600,600,600,600,600,600,600,600,600,600,600,600,600,600,600,600,600,600,600
  48. };
  49. //D4 2 re 294Hz
  50. const uint16_t note_D4[34]={
  51. 3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,
  52. 600,600,600,600,600,600,600,600,600,600,600,600,600,600,600,600,600,600
  53. };
  54. //E4 3 mi 330Hz
  55. const uint16_t note_E4[30]={
  56. 3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,
  57. 600,600,600,600,600,600,600,600,600,600,600,600,600,600,600
  58. };
  59. //F4 4 fa 349Hz
  60. const uint16_t note_F4[29]={
  61. 3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,
  62. 600,600,600,600,600,600,600,600,600,600,600,600,600,600,600
  63. };
  64. //G4 5 sol 392Hz
  65. const uint16_t note_G4[26]={
  66. 3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,
  67. 600,600,600,600,600,600,600,600,600,600,600,600,600
  68. };
  69. //A4 6 la 440Hz
  70. const uint16_t note_A4[23]={
  71. 3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,
  72. 600,600,600,600,600,600,600,600,600,600,600
  73. };
  74. //B4 7 si 494Hz
  75. const uint16_t note_B4[20]={
  76. 3500,3500,3500,3500,3500,3500,3500,3500,3500,3500,
  77. 600,600,600,600,600,600,600,600,600,600
  78. };
  79. //C5 高音1 523Hz
  80. const uint16_t note_C5[19]={
  81. 3500,3500,3500,3500,3500,3500,3500,3500,3500,
  82. 600,600,600,600,600,600,600,600,600,600
  83. };
  84. //休止符静音
  85. const uint16_t note_silence[2]={2048,2048};

  87. const MusicNote_t song[]=
  88. {
  89.     //小和尚下山去化斋 6 3 6 3 | 6 3 2 1 6? 【句停顿180】
  90.     {note_A4,23,220},{note_E4,30,220},{note_A4,23,220},{note_E4,30,220},
  91.     {note_A4,23,220},{note_E4,30,220},{note_D4,34,220},{note_C4,38,220},{note_A4,23,440},
  92.     {note_silence,2,180},

  94.     //老和尚有交待 6 3 6 3 | 6 3 2 1 6? 【句停顿180】
  95.     {note_A4,23,220},{note_E4,30,220},{note_A4,23,220},{note_E4,30,220},
  96.     {note_A4,23,220},{note_E4,30,220},{note_D4,34,220},{note_C4,38,220},{note_A4,23,440},
  97.     {note_silence,2,180},

  99.     //山下的女人是老虎 5 6 i 6 5 3 | 2 3 2 1? 【句停顿180】
  100.     {note_G4,26,220},{note_A4,23,220},{note_C5,19,220},{note_A4,23,220},{note_G4,26,220},{note_E4,30,220},
  101.     {note_D4,34,220},{note_E4,30,220},{note_D4,34,220},{note_C4,38,440},
  102.     {note_silence,2,180},

  104.     //遇见了千万要躲开 5 6 i 6 5 3 | 2 3 2 1? 【句停顿180】
  105.     {note_G4,26,220},{note_A4,23,220},{note_C5,19,220},{note_A4,23,220},{note_G4,26,220},{note_E4,30,220},
  106.     {note_D4,34,220},{note_E4,30,220},{note_D4,34,220},{note_C4,38,440},
  107.     {note_silence,2,180},

  109.     //走过了一村又一寨 6 3 3 3 2 1 |6 2 2 1 6? 【句停顿180】
  110.     {note_A4,23,220},{note_E4,30,220},{note_E4,30,220},{note_E4,30,220},{note_D4,34,220},{note_C4,38,220},
  111.     {note_A4,23,220},{note_D4,34,220},{note_D4,34,220},{note_C4,38,220},{note_A4,23,440},
  112.     {note_silence,2,180},

  114.     //小和尚暗思揣 5 6 i 6 5 3 |5 6 5 3? 【句停顿180】
  115.     {note_G4,26,220},{note_A4,23,220},{note_C5,19,220},{note_A4,23,220},{note_G4,26,220},{note_E4,30,220},
  116.     {note_G4,26,220},{note_A4,23,220},{note_G4,26,220},{note_E4,30,440},
  117.     {note_silence,2,180},

  119.     //为什么老虎不吃人 6 6 6 i 2' 3' 2' i |6 5 3? 【句停顿180】
  120.     {note_A4,23,220},{note_A4,23,220},{note_A4,23,220},{note_C5,19,220},{note_D4,34,220},{note_E4,30,220},{note_D4,34,220},{note_C5,19,220},
  121.     {note_A4,23,220},{note_G4,26,220},{note_E4,30,440},
  122.     {note_silence,2,180},

  124.     //模样还挺可爱 6 3 3 3 2 1 |6 2 2 1 6? 【句停顿180】
  125.     {note_A4,23,220},{note_E4,30,220},{note_E4,30,220},{note_E4,30,220},{note_D4,34,220},{note_C4,38,220},
  126.     {note_A4,23,220},{note_D4,34,220},{note_D4,34,220},{note_C4,38,220},{note_A4,23,440},
  127.     {note_silence,2,180},

  129.     //老和尚悄悄告徒弟 3 3 3 5 6 i |6 6 6 i 2' 3' 2' i 【句停顿180】
  130.     {note_E4,30,220},{note_E4,30,220},{note_E4,30,220},{note_G4,26,220},{note_A4,23,220},{note_C5,19,220},
  131.     {note_A4,23,220},{note_A4,23,220},{note_A4,23,220},{note_C5,19,220},{note_D4,34,220},{note_E4,30,220},{note_D4,34,220},{note_C5,19,220},
  132.     {note_silence,2,180},

  134.     //这样的老虎最呀最厉害 3 3 3 5 6 i |6 6 6 i 2' 3' 5? 【句停顿180】
  135.     {note_E4,30,220},{note_E4,30,220},{note_E4,30,220},{note_G4,26,220},{note_A4,23,220},{note_C5,19,220},
  136.     {note_A4,23,220},{note_A4,23,220},{note_A4,23,220},{note_C5,19,220},{note_D4,34,220},{note_E4,30,220},{note_G4,26,440},
  137.     {note_silence,2,180},

  139.     //小和尚吓得赶紧跑 3 3 3 5 6 i | 2 2 2 2 5 5 【句停顿180】
  140.     {note_E4,30,220},{note_E4,30,220},{note_E4,30,220},{note_G4,26,220},{note_A4,23,220},{note_C5,19,220},
  141.     {note_D4,34,220},{note_D4,34,220},{note_D4,34,220},{note_D4,34,220},{note_G4,26,220},{note_G4,26,220},
  142.     {note_silence,2,180},

  144.     //师傅呀呀呀呀坏坏坏 3 3 2 3 5 6 |2 2 2 5 5?
  145.     {note_E4,30,220},{note_E4,30,220},{note_D4,34,220},{note_E4,30,220},{note_G4,26,220},{note_A4,23,220},
  146.     {note_D4,34,220},{note_D4,34,220},{note_D4,34,220},{note_G4,26,220},{note_G4,26,440},

  148.     {note_silence,2,600}
  149. };
  150. #define SONG_LEN  (sizeof(song)/sizeof(MusicNote_t))
  151. /* USER CODE END PV */

  153. /* Private function prototypes -----------------------------------------------*/
  154. void SystemClock_Config(void);
  155. static void MX_GPIO_Init(void);
  156. static void MX_DMA_Init(void);
  157. static void MX_DAC_Init(void);
  158. static void MX_TIM6_Init(void);
  159. /* USER CODE BEGIN PFP */
  160. void DAC_SetNote(const uint16_t *wave_tab,uint16_t len);
  161. /* USER CODE END PFP */

  163. /* Private user code ---------------------------------------------------------*/
  164. /* USER CODE BEGIN 0 */
  165. /* USER CODE END 0 */

  167. /**
  168.   * @brief  The application entry point.
  169.   * @retval int
  170.   */
  171. int main(void)
  172. {
  173.   /* USER CODE BEGIN 1 */
  174.   uint32_t idx=0;
  175.   /* USER CODE END 1 */

  177.   /* MCU Configuration--------------------------------------------------------*/
  178.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  179.   HAL_Init();

  181.   /* USER CODE BEGIN Init */
  182.   /* USER CODE END Init */

  184.   /* Configure the system clock */
  185.   SystemClock_Config();

  187.   /* USER CODE BEGIN SysInit */
  188.   /* USER CODE END SysInit */

  190.   /* Initialize all configured peripherals */
  191.   MX_GPIO_Init();
  192.   MX_DMA_Init();
  193.   MX_DAC_Init();
  194.   MX_TIM6_Init();

  196.   /* USER CODE BEGIN 2 */
  197.   DAC_SetNote(song[0].wave, song[0].len);
  198.   HAL_TIM_Base_Start(&htim6);
  199.   idx=1;
  200.   /* USER CODE END 2 */

  202.   /* Infinite loop */
  203.   /* USER CODE BEGIN WHILE */
  204.   while (1)
  205.   {
  206.       if(idx < SONG_LEN)
  207.       {
  208.           HAL_Delay(song[idx].beat_ms);
  209.           DAC_SetNote(song[idx].wave, song[idx].len);
  210.           idx++;
  211.       }
  212.       else
  213.       {
  214.           HAL_Delay(800);
  215.           idx=0;
  216.           DAC_SetNote(song[0].wave, song[0].len);
  217.           idx=1;
  218.       }
  219.     /* USER CODE END WHILE */

  221.     /* USER CODE BEGIN 3 */
  222.     /* USER CODE END 3 */
  223.   }
  224. }

  226. /**
  227.   * @brief System Clock Configuration
  228.   * @retval None
  229.   */
  230. void SystemClock_Config(void)
  231. {
  232.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  233.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  235.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  236.   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  237.   RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  238.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  239.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  240.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  241.   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL6;
  242.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  243.   {
  244.     Error_Handler();
  245.   }

  247.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  248.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  249.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  250.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  251.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  252.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  254.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  255.   {
  256.     Error_Handler();
  257.   }
  258. }

  260. /**
  261.   * @brief DAC Initialization Function
  262.   * @param None
  263.   * @retval None
  264.   */
  265. static void MX_DAC_Init(void)
  266. {
  267.   /* USER CODE BEGIN DAC_Init 0 */
  268.   /* USER CODE END DAC_Init 0 */
  269.   DAC_ChannelConfTypeDef sConfig = {0};
  270.   /* USER CODE BEGIN DAC_Init 1 */
  271.   /* USER CODE END DAC_Init 1 */
  272.   hdac.Instance = DAC;
  273.   if (HAL_DAC_Init(&hdac) != HAL_OK)
  274.   {
  275.     Error_Handler();
  276.   }
  277.   sConfig.DAC_Trigger = DAC_TRIGGER_T6_TRGO;
  278.   sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
  279.   if (HAL_DAC_ConfigChannel(&hdac, &sConfig, DAC_CHANNEL_2) != HAL_OK)
  280.   {
  281.     Error_Handler();
  282.   }
  283.   /* USER CODE BEGIN DAC_Init 2 */
  284.   /* USER CODE END DAC_Init 2 */
  285. }

  287. /**
  288.   * @brief TIM6 Initialization Function
  289.   * @param None
  290.   * @retval None
  291.   */
  292. static void MX_TIM6_Init(void)
  293. {
  294.   /* USER CODE BEGIN TIM6_Init 0 */
  295.   /* USER CODE END TIM6_Init 0 */
  296.   TIM_MasterConfigTypeDef sMasterConfig = {0};
  297.   /* USER CODE BEGIN TIM6_Init 1 */
  298.   /* USER CODE END TIM6_Init 1 */
  299.   htim6.Instance = TIM6;
  300.   htim6.Init.Prescaler = 35;
  301.   htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
  302.   htim6.Init.Period = 99;
  303.   htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  304.   if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
  305.   {
  306.     Error_Handler();
  307.   }
  308.   sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
  309.   sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  310.   if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
  311.   {
  312.     Error_Handler();
  313.   }
  314.   /* USER CODE BEGIN TIM6_Init 2 */
  315.   /* USER CODE END TIM6_Init 2 */
  316. }

  318. static void MX_DMA_Init(void)
  319. {
  320.   __HAL_RCC_DMA2_CLK_ENABLE();
  321.   HAL_NVIC_SetPriority(DMA2_Channel4_5_IRQn, 0, 0);
  322.   HAL_NVIC_EnableIRQ(DMA2_Channel4_5_IRQn);
  323. }

  325. static void MX_GPIO_Init(void)
  326. {
  327.   __HAL_RCC_GPIOA_CLK_ENABLE();
  328. }

  330. /* USER CODE BEGIN 4 */
  331. void DAC_SetNote(const uint16_t *wave_tab,uint16_t len)
  332. {
  333.     HAL_DAC_Stop_DMA(&hdac,DAC_CHANNEL_2);
  334.     HAL_DAC_Start_DMA(&hdac, DAC_CHANNEL_2, (uint32_t *)wave_tab, len, DAC_ALIGN_12B_R);
  335. }
  336. /* USER CODE END 4 */

  338. void Error_Handler(void)
  339. {
  340.   __disable_irq();
  341.   while (1)
  342.   {
  343.   }
  344. }

  346. #ifdef USE_FULL_ASSERT
  347. void assert_failed(uint8_t *file, uint32_t line)
  348. {
  349. }
  350. #endif /* USE_FULL_ASSERT */
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