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[STM32H7] 【STM32H7S78-DK测评】-6- SD读写测试

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 楼主| 南来之风 发表于 2024-9-29 19:56 | 显示全部楼层 |阅读模式
ST, STM, STM32, STM32H7, sd
本帖最后由 南来之风 于 2024-9-8 21:53 编辑

开发板上有MicroSD卡接口：
2990466ddab251184a.png

根据原理图初始化相应的PIN与时钟：
复制
  1. /**
    

  2. * [url=home.php?mod=space&uid=247401]@brief[/url] SD MSP Initialization
    

  3. * This function configures the hardware resources used in this example
    

  4. * @param hsd: SD handle pointer
    

  5. * @retval None
    

  6. */
    

  7. void HAL_SD_MspInit(SD_HandleTypeDef* hsd)
    

  8. {
    

  9.   GPIO_InitTypeDef GPIO_InitStruct = {0};
    

  10.   RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
    

  11.   if(hsd->Instance==SDMMC1)
    

  12.   {
    

  13.   /* USER CODE BEGIN SDMMC1_MspInit 0 */
    


  14. 

  15.   /* USER CODE END SDMMC1_MspInit 0 */
    


  16. 

  17.   /** Initializes the peripherals clock
    

  18.   */
    

  19.     PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_SDMMC12;
    

  20.     PeriphClkInit.Sdmmc12ClockSelection = RCC_SDMMC12CLKSOURCE_PLL2S;
    

  21.     if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    

  22.     {
    

  23.       Error_Handler();
    

  24.     }
    


  25. 

  26.     /* Peripheral clock enable */
    

  27.     __HAL_RCC_SDMMC1_CLK_ENABLE();
    


  28. 

  29.     __HAL_RCC_GPIOD_CLK_ENABLE();
    

  30.     __HAL_RCC_GPIOC_CLK_ENABLE();
    

  31.     /**SDMMC1 GPIO Configuration
    

  32.     PD2     ------> SDMMC1_CMD
    

  33.     PC10     ------> SDMMC1_D2
    

  34.     PC11     ------> SDMMC1_D3
    

  35.     PC12     ------> SDMMC1_CK
    

  36.     PC8     ------> SDMMC1_D0
    

  37.     PC9     ------> SDMMC1_D1
    

  38.     */
    

  39.     GPIO_InitStruct.Pin = GPIO_PIN_2;
    

  40.     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    

  41.     GPIO_InitStruct.Pull = GPIO_NOPULL;
    

  42.     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    

  43.     GPIO_InitStruct.Alternate = GPIO_AF11_SDMMC1;
    

  44.     HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
    


  45. 

  46.     GPIO_InitStruct.Pin = GPIO_PIN_10;
    

  47.     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    

  48.     GPIO_InitStruct.Pull = GPIO_NOPULL;
    

  49.     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    

  50.     GPIO_InitStruct.Alternate = GPIO_AF12_SDMMC1;
    

  51.     HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
    


  52. 

  53.     GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_8|GPIO_PIN_9;
    

  54.     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    

  55.     GPIO_InitStruct.Pull = GPIO_NOPULL;
    

  56.     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    

  57.     GPIO_InitStruct.Alternate = GPIO_AF11_SDMMC1;
    

  58.     HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
    


  59. 

  60.     /* SDMMC1 interrupt Init */
    

  61.     HAL_NVIC_SetPriority(SDMMC1_IRQn, 0, 0);
    

  62.   /* USER CODE BEGIN SDMMC1_MspInit 1 */
    

  63.   /*  SDMMC Clk on PLL1S: (64 / 4 * 25 / 2) = 200MHz */
    


  64. 

  65.   /* Activate PLL1 with HSI as source (HSI is ON at reset) */
    


  66. 

  67.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    


  68. 

  69.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    

  70.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    

  71.   RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
    

  72.   RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
    

  73.   RCC_OscInitStruct.PLL1.PLLState = RCC_PLL_ON;
    

  74.   RCC_OscInitStruct.PLL1.PLLSource = RCC_PLLSOURCE_HSI;
    

  75.   RCC_OscInitStruct.PLL1.PLLM = 16;
    

  76.   RCC_OscInitStruct.PLL1.PLLN = 275;
    

  77.   RCC_OscInitStruct.PLL1.PLLP = 2;
    

  78.   RCC_OscInitStruct.PLL1.PLLQ = 2;
    

  79.   RCC_OscInitStruct.PLL1.PLLR = 2;
    

  80.   RCC_OscInitStruct.PLL1.PLLS = 2;
    

  81.   RCC_OscInitStruct.PLL1.PLLT = 2;
    

  82.   RCC_OscInitStruct.PLL1.PLLFractional = 0;
    

  83.   RCC_OscInitStruct.PLL2.PLLState = RCC_PLL_NONE;
    

  84.   RCC_OscInitStruct.PLL3.PLLState = RCC_PLL_NONE;
    

  85.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    

  86.   {
    

  87.     /* Initialization error */
    

  88.     while(1);
    

  89.   }
    


  90. 

  91.   /*##-1- Enable peripherals and GPIO Clocks #################################*/
    


  92. 

  93.   __HAL_RCC_SDMMC1_FORCE_RESET();
    

  94.   __HAL_RCC_SDMMC1_RELEASE_RESET();
    


  95. 

  96.   /* NVIC configuration for SDMMC interrupts */
    

  97.   HAL_NVIC_EnableIRQ(SDMMC1_IRQn);
    

  98.   /* USER CODE END SDMMC1_MspInit 1 */
    


  99. 

  100.   }
    


  101. 

  102. }


相应的初始化函数：
复制
  1. void MX_SDMMC1_SD_Init(void)
    

  2. {
    


  3. 

  4.   /* USER CODE BEGIN SDMMC1_Init 0 */
    


  5. 

  6.   /* USER CODE END SDMMC1_Init 0 */
    


  7. 

  8.   /* USER CODE BEGIN SDMMC1_Init 1 */
    


  9. 

  10.   /* USER CODE END SDMMC1_Init 1 */
    

  11.   hsd1.Instance = SDMMC1;
    

  12.   hsd1.Init.ClockEdge = SDMMC_CLOCK_EDGE_FALLING;
    

  13.   hsd1.Init.ClockPowerSave = SDMMC_CLOCK_POWER_SAVE_DISABLE;
    

  14.   hsd1.Init.BusWide = SDMMC_BUS_WIDE_4B;
    

  15.   hsd1.Init.HardwareFlowControl = SDMMC_HARDWARE_FLOW_CONTROL_ENABLE;
    

  16.   hsd1.Init.ClockDiv = 0x02;
    

  17.   if (HAL_SD_Init(&hsd1) != HAL_OK)
    

  18.   {
    

  19.     Error_Handler();
    

  20.   }
    

  21.   /* USER CODE BEGIN SDMMC1_Init 2 */
    


  22. 

  23.   /* USER CODE END SDMMC1_Init 2 */
    


  24. 

  25. }
接下来进行读写测试：
复制
  1. static int32_t FS_FileOperations(void)
    

  2. {
    

  3.   FRESULT res; /* FatFs function common result code */
    

  4.   uint32_t byteswritten, bytesread; /* File write/read counts */
    

  5.   uint8_t rtext[100]; /* File read buffer */
    


  6. 

  7.   /* Register the file system object to the FatFs module */
    

  8.   if(f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) == FR_OK)
    

  9.   {
    

  10.     /* Create and Open a new text file object with write access */
    

  11.     if(f_open(&SDFile, "STM32.TXT", FA_CREATE_ALWAYS | FA_WRITE) == FR_OK)
    

  12.     {
    


  13. 

  14.       /* Write data to the text file */
    

  15.       res = f_write(&SDFile, (const void *)wtext, sizeof(wtext), (void *)&byteswritten);
    


  16. 

  17.       if((byteswritten > 0) && (res == FR_OK))
    

  18.       {
    

  19.         /* Close the open text file */
    

  20.         f_close(&SDFile);
    


  21. 

  22.         /* Open the text file object with read access */
    

  23.         if(f_open(&SDFile, "STM32.TXT", FA_READ) == FR_OK)
    

  24.         {
    

  25.           /* Read data from the text file */
    

  26.           res = f_read(&SDFile, ( void *)rtext, sizeof(rtext), (void *)&bytesread);
    

  27.           HAL_UART_Transmit(&huart4, "\r\n", sizeof("\r\n"), 0xffffffff);
    

  28.           HAL_UART_Transmit(&huart4, rtext, strlen(rtext), 0xffffffff);
    


  29. 

  30.           if((bytesread > 0) && (res == FR_OK))
    

  31.           {
    

  32.             /* Close the open text file */
    

  33.             f_close(&SDFile);
    


  34. 

  35.             /* Compare read data with the expected data */
    

  36.             if(bytesread == byteswritten)
    

  37.             {
    

  38.                     HAL_UART_Transmit(&huart4, "\r\nSuccess of the demo", sizeof("\r\n Success of the demo"), 0xffffffff);
    

  39.               /* Success of the demo: no error occurrence */
    

  40.               return 0;
    

  41.             }
    

  42.           }
    

  43.         }
    

  44.       }
    

  45.     }
    

  46.   }
    

  47.   /* Error */
    

  48.   return -1;
    

  49. }


实物展示：
2645066ddabe2cb7e5.png


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Amazingxixixi 发表于 2024-10-31 16:01 | 显示全部楼层
测试速度没有？速度可以到多少M？
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地瓜patch 发表于 2024-10-31 18:00 来自手机 | 显示全部楼层
sd卡的文件系统是用系统自带的么？还是调用库
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