SD卡的使用

记录下SD卡的使用

1.首先需要正确移植SD卡的程序

由于SD卡的管脚是固定的,标准库参考官方例程就行

加入 stm32_eval_sdio_sd.c 这是官方写的

2.加入在其他文件中定义的缺少的东西

c 复制代码
#define SD_DETECT_PIN                    GPIO_Pin_11                 /* PF.11 */
#define SD_DETECT_GPIO_PORT              GPIOF                       /* GPIOF */
#define SD_DETECT_GPIO_CLK               RCC_APB2Periph_GPIOF

#define SDIO_FIFO_ADDRESS                ((uint32_t)0x40018080)
/** 
  * @brief  SDIO Intialization Frequency (400KHz max)
  */
#define SDIO_INIT_CLK_DIV                ((uint8_t)0xB2)
/** 
  * @brief  SDIO Data Transfer Frequency (25MHz max) 
  */
//#define SDIO_TRANSFER_CLK_DIV            ((uint8_t)0x00) 
#define SDIO_TRANSFER_CLK_DIV            ((uint8_t)0x01) 

3.加入SDIO.c的函数

c 复制代码
#include "bsp_SDIO.h"

#include "stm32_eval_sdio_sd.h"

/** @addtogroup STM32F10x_StdPeriph_Examples
  * @{
  */

/** @addtogroup SDIO_uSDCard
  * @{
  */



/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint8_t Buffer_Block_Tx[BLOCK_SIZE], Buffer_Block_Rx[BLOCK_SIZE];
uint8_t Buffer_MultiBlock_Tx[MULTI_BUFFER_SIZE], Buffer_MultiBlock_Rx[MULTI_BUFFER_SIZE];
volatile TestStatus EraseStatus = FAILED, TransferStatus1 = FAILED, TransferStatus2 = FAILED;
SD_Error Status = SD_OK;
__IO uint32_t SDCardOperation = SD_OPERATION_ERASE;



/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
//int main(void)
//{
//  /*!< At this stage the microcontroller clock setting is already configured, 
//       this is done through SystemInit() function which is called from startup
//       file (startup_stm32f10x_xx.s) before to branch to application main.
//       To reconfigure the default setting of SystemInit() function, refer to
//       system_stm32f10x.c file
//     */

//  /* Initialize LEDs available on STM3210X-EVAL board *************************/
  STM_EVAL_LEDInit(LED1);
  STM_EVAL_LEDInit(LED2);
  STM_EVAL_LEDInit(LED3);
  STM_EVAL_LEDInit(LED4);  

//  /* Interrupt Config */
//  NVIC_Configuration();

//  /*------------------------------ SD Init ---------------------------------- */
//  if((Status = SD_Init()) != SD_OK)
//  {
    STM_EVAL_LEDOn(LED4); 
//  }
//        
//  while((Status == SD_OK) && (SDCardOperation != SD_OPERATION_END) && (SD_Detect()== SD_PRESENT))
//  {
//    switch(SDCardOperation)
//    {
//      /*-------------------------- SD Erase Test ---------------------------- */
//      case (SD_OPERATION_ERASE):
//      {
//        SD_EraseTest();
//        SDCardOperation = SD_OPERATION_BLOCK;
//        break;
//      }
//      /*-------------------------- SD Single Block Test --------------------- */
//      case (SD_OPERATION_BLOCK):
//      {
//        SD_SingleBlockTest();
//        SDCardOperation = SD_OPERATION_MULTI_BLOCK;
//        break;
//      }       
//      /*-------------------------- SD Multi Blocks Test --------------------- */
//      case (SD_OPERATION_MULTI_BLOCK):
//      {
//        SD_MultiBlockTest();
//        SDCardOperation = SD_OPERATION_END;
//        break;
//      }              
//    }
//  }
//  
//  /* Infinite loop */
//  while (1)
//  {}
//}

///**
//  * @brief  Configures SDIO IRQ channel.
//  * @param  None
//  * @retval None
//  */
//void NVIC_Configuration(void)
//{
//  NVIC_InitTypeDef NVIC_InitStructure;

//  /* Configure the NVIC Preemption Priority Bits */
//  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

//  NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
//  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
//  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
//  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
//  NVIC_Init(&NVIC_InitStructure);
//}

/**
  * @brief  Tests the SD card erase operation.
  * @param  None
  * @retval None
  */
void SD_EraseTest(void)
{
  /*------------------- Block Erase ------------------------------------------*/
  if (Status == SD_OK)
  {
    /* Erase NumberOfBlocks Blocks of WRITE_BL_LEN(512 Bytes) */
    Status = SD_Erase(0x00, (BLOCK_SIZE * NUMBER_OF_BLOCKS));
  }

  if (Status == SD_OK)
  {
    Status = SD_ReadMultiBlocks(Buffer_MultiBlock_Rx, 0x00, BLOCK_SIZE, NUMBER_OF_BLOCKS);

    /* Check if the Transfer is finished */
    Status = SD_WaitReadOperation();

    /* Wait until end of DMA transfer */
    while(SD_GetStatus() != SD_TRANSFER_OK);
  }

  /* Check the correctness of erased blocks */
  if (Status == SD_OK)
  {
    EraseStatus = eBuffercmp(Buffer_MultiBlock_Rx, MULTI_BUFFER_SIZE);
  }
  
  if(EraseStatus == PASSED)
  {
//    STM_EVAL_LEDOn(LED1);
  }
  else
  {
//    STM_EVAL_LEDOff(LED1);
//    STM_EVAL_LEDOn(LED4);    
  }
}

/**
  * @brief  Tests the SD card Single Blocks operations.
  * @param  None
  * @retval None
  */
void SD_SingleBlockTest(void)
{
  /*------------------- Block Read/Write --------------------------*/
  /* Fill the buffer to send */
  Fill_Buffer(Buffer_Block_Tx, BLOCK_SIZE, 0x320F);

  if (Status == SD_OK)
  {
    /* Write block of 512 bytes on address 0 */
    Status = SD_WriteBlock(Buffer_Block_Tx, 0x00, BLOCK_SIZE);
    /* Check if the Transfer is finished */
    Status = SD_WaitWriteOperation();
    while(SD_GetStatus() != SD_TRANSFER_OK);
  }

  if (Status == SD_OK)
  {
    /* Read block of 512 bytes from address 0 */
    Status = SD_ReadBlock(Buffer_Block_Rx, 0x00, BLOCK_SIZE);
    /* Check if the Transfer is finished */
    Status = SD_WaitReadOperation();
    while(SD_GetStatus() != SD_TRANSFER_OK);
  }

  /* Check the correctness of written data */
  if (Status == SD_OK)
  {
    TransferStatus1 = Buffercmp(Buffer_Block_Tx, Buffer_Block_Rx, BLOCK_SIZE);
  }
  
  if(TransferStatus1 == PASSED)
  {
//    STM_EVAL_LEDOn(LED2);
  }
  else
  {
//    STM_EVAL_LEDOff(LED2);
//    STM_EVAL_LEDOn(LED4);    
  }
}

/**
  * @brief  Tests the SD card Multiple Blocks operations.
  * @param  None
  * @retval None
  */
void SD_MultiBlockTest(void)
{
  /*--------------- Multiple Block Read/Write ---------------------*/
  /* Fill the buffer to send */
  Fill_Buffer(Buffer_MultiBlock_Tx, MULTI_BUFFER_SIZE, 0x0);

  if (Status == SD_OK)
  {
    /* Write multiple block of many bytes on address 0 */
    Status = SD_WriteMultiBlocks(Buffer_MultiBlock_Tx, 0x00, BLOCK_SIZE, NUMBER_OF_BLOCKS);
    /* Check if the Transfer is finished */
    Status = SD_WaitWriteOperation();
    while(SD_GetStatus() != SD_TRANSFER_OK);
  }

  if (Status == SD_OK)
  {
    /* Read block of many bytes from address 0 */
    Status = SD_ReadMultiBlocks(Buffer_MultiBlock_Rx, 0x00, BLOCK_SIZE, NUMBER_OF_BLOCKS);
    /* Check if the Transfer is finished */
    Status = SD_WaitReadOperation();
    while(SD_GetStatus() != SD_TRANSFER_OK);
  }

  /* Check the correctness of written data */
  if (Status == SD_OK)
  {
    TransferStatus2 = Buffercmp(Buffer_MultiBlock_Tx, Buffer_MultiBlock_Rx, MULTI_BUFFER_SIZE);
  }
  
  if(TransferStatus2 == PASSED)
  {
//    STM_EVAL_LEDOn(LED3);
  }
  else
  {
//    STM_EVAL_LEDOff(LED3);
//    STM_EVAL_LEDOn(LED4);    
  }
}

/**
  * @brief  Compares two buffers.
  * @param  pBuffer1, pBuffer2: buffers to be compared.
  * @param  BufferLength: buffer's length
  * @retval PASSED: pBuffer1 identical to pBuffer2
  *         FAILED: pBuffer1 differs from pBuffer2
  */
TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint32_t BufferLength)
{
  while (BufferLength--)
  {
    if (*pBuffer1 != *pBuffer2)
    {
      return FAILED;
    }

    pBuffer1++;
    pBuffer2++;
  }

  return PASSED;
}

/**
  * @brief  Fills buffer with user predefined data.
  * @param  pBuffer: pointer on the Buffer to fill
  * @param  BufferLength: size of the buffer to fill
  * @param  Offset: first value to fill on the Buffer
  * @retval None
  */
void Fill_Buffer(uint8_t *pBuffer, uint32_t BufferLength, uint32_t Offset)
{
  uint16_t index = 0;

  /* Put in global buffer same values */
  for (index = 0; index < BufferLength; index++)
  {
    pBuffer[index] = index + Offset;
  }
}

/**
  * @brief  Checks if a buffer has all its values are equal to zero.
  * @param  pBuffer: buffer to be compared.
  * @param  BufferLength: buffer's length
  * @retval PASSED: pBuffer values are zero
  *         FAILED: At least one value from pBuffer buffer is different from zero.
  */
TestStatus eBuffercmp(uint8_t* pBuffer, uint32_t BufferLength)
{
  while (BufferLength--)
  {
    /* In some SD Cards the erased state is 0xFF, in others it's 0x00 */
    if ((*pBuffer != 0xFF) && (*pBuffer != 0x00))
    {
      return FAILED;
    }

    pBuffer++;
  }

  return PASSED;
}

#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 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) */

  /* Infinite loop */
  while (1)
  {}
}
#endif

在头文件中加入

c 复制代码
#include "pbdata.h"



/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

/* Private define ------------------------------------------------------------*/
#define BLOCK_SIZE            512 /* Block Size in Bytes */

#define NUMBER_OF_BLOCKS      32  /* For Multi Blocks operation (Read/Write) */
#define MULTI_BUFFER_SIZE    (BLOCK_SIZE * NUMBER_OF_BLOCKS)

#define SD_OPERATION_ERASE          0
#define SD_OPERATION_BLOCK          1
#define SD_OPERATION_MULTI_BLOCK    2 
#define SD_OPERATION_END            3





extern  __IO uint32_t SDCardOperation;

在中断中加入

c 复制代码
/**
  * @brief  This function handles SDIO global interrupt request.
  * @param  None
  * @retval None
  */
void SDIO_IRQHandler(void)
{
  /* Process All SDIO Interrupt Sources */
  SD_ProcessIRQSrc();
}

进行测试

c 复制代码
  /*------------------------------ SD Init ---------------------------------- */
  if((gStatus = SD_Init()) != SD_OK)
  {
//    STM_EVAL_LEDOn(LED4); 
  }
        
  while((gStatus == SD_OK) && (SDCardOperation != SD_OPERATION_END) && (SD_Detect()== SD_PRESENT))
  {
    switch(SDCardOperation)
    {
      /*-------------------------- SD Erase Test ---------------------------- */
      case (SD_OPERATION_ERASE):
      {
        SD_EraseTest();
        SDCardOperation = SD_OPERATION_BLOCK;
        break;
      }
      /*-------------------------- SD Single Block Test --------------------- */
      case (SD_OPERATION_BLOCK):
      {
        SD_SingleBlockTest();
        SDCardOperation = SD_OPERATION_MULTI_BLOCK;
        break;
      }       
      /*-------------------------- SD Multi Blocks Test --------------------- */
      case (SD_OPERATION_MULTI_BLOCK):
      {
        SD_MultiBlockTest();
        SDCardOperation = SD_OPERATION_END;
        break;
      }              
    }
  }

SD卡读写内容一致,就可以正常使用了
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