path: root/src/stm32lib/examples/SDIO/main.c

/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name          : main.c
* Author             : MCD Application Team
* Version            : V2.0.1
* Date               : 06/13/2008
* Description        : Main program body
********************************************************************************
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
#include "sdcard.h"

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

/* Private define ------------------------------------------------------------*/
#define BlockSize            512 /* Block Size in Bytes */
#define BufferWordsSize      (BlockSize >> 2)

#define NumberOfBlocks       2  /* For Multi Blocks operation (Read/Write) */
#define MultiBufferWordsSize ((BlockSize * NumberOfBlocks) >> 2)


/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
SD_CardInfo SDCardInfo;
u32 Buffer_Block_Tx[BufferWordsSize], Buffer_Block_Rx[BufferWordsSize];
u32 Buffer_MultiBlock_Tx[MultiBufferWordsSize], Buffer_MultiBlock_Rx[MultiBufferWordsSize];
volatile TestStatus EraseStatus = FAILED, TransferStatus1 = FAILED, TransferStatus2 = FAILED;
SD_Error Status = SD_OK;
ErrorStatus HSEStartUpStatus;

/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void NVIC_Configuration(void);
void Fill_Buffer(u32 *pBuffer, u16 BufferLenght, u32 Offset);
TestStatus Buffercmp(u32* pBuffer1, u32* pBuffer2, u16 BufferLength);
TestStatus eBuffercmp(u32* pBuffer, u16 BufferLength);

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

/*******************************************************************************
* Function Name  : main
* Description    : Main program.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif

  /* Clock Config */
  RCC_Configuration();

  /* Interrupt Config */
  NVIC_Configuration();

  /*-------------------------- SD Init ----------------------------- */
  Status = SD_Init();

  if (Status == SD_OK)
  {
    /*----------------- Read CSD/CID MSD registers ------------------*/
    Status = SD_GetCardInfo(&SDCardInfo);
  }

  if (Status == SD_OK)
  {
    /*----------------- Select Card --------------------------------*/
    Status = SD_SelectDeselect((u32) (SDCardInfo.RCA << 16));
  }

  if (Status == SD_OK)
  {
    Status = SD_EnableWideBusOperation(SDIO_BusWide_4b);
  }

  /*------------------- Block Erase -------------------------------*/
  if (Status == SD_OK)
  {
    /* Erase NumberOfBlocks Blocks of WRITE_BL_LEN(512 Bytes) */
    Status = SD_Erase(0x00, (BlockSize * NumberOfBlocks));
  }

  /* Set Device Transfer Mode to DMA */
  if (Status == SD_OK)
  {  
    Status = SD_SetDeviceMode(SD_DMA_MODE);
  }

  if (Status == SD_OK)
  {
    Status = SD_ReadMultiBlocks(0x00, Buffer_MultiBlock_Rx, BlockSize, NumberOfBlocks);
  }

  if (Status == SD_OK)
  {
    EraseStatus = eBuffercmp(Buffer_MultiBlock_Rx, MultiBufferWordsSize);
  }
  
  /*------------------- Block Read/Write --------------------------*/
  /* Fill the buffer to send */
  Fill_Buffer(Buffer_Block_Tx, BufferWordsSize, 0xFFFF);


  if (Status == SD_OK)
  {
    /* Write block of 512 bytes on address 0 */
    Status = SD_WriteBlock(0x00, Buffer_Block_Tx, BlockSize);
  }

  if (Status == SD_OK)
  {
    /* Read block of 512 bytes from address 0 */
    Status = SD_ReadBlock(0x00, Buffer_Block_Rx, BlockSize);
  }

  if (Status == SD_OK)
  {
    /* Check the corectness of written dada */
    TransferStatus1 = Buffercmp(Buffer_Block_Tx, Buffer_Block_Rx, BufferWordsSize);
  }

  /*--------------- Multiple Block Read/Write ---------------------*/
  /* Fill the buffer to send */
  Fill_Buffer(Buffer_MultiBlock_Tx, MultiBufferWordsSize, 0x0);

  if (Status == SD_OK)
  {
    /* Write multiple block of many bytes on address 0 */
    Status = SD_WriteMultiBlocks(0x00, Buffer_MultiBlock_Tx, BlockSize, NumberOfBlocks);
  }

  if (Status == SD_OK)
  {
    /* Read block of many bytes from address 0 */
    Status = SD_ReadMultiBlocks(0x00, Buffer_MultiBlock_Rx, BlockSize, NumberOfBlocks);
  }

  if (Status == SD_OK)
  {
    /* Check the corectness of written dada */
    TransferStatus2 = Buffercmp(Buffer_MultiBlock_Tx, Buffer_MultiBlock_Rx, MultiBufferWordsSize);
  }

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

/*******************************************************************************
* Function Name  : RCC_Configuration
* Description    : Configures the different system clocks.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void RCC_Configuration(void)
{   
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
    /* Enable Prefetch Buffer */
    FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

    /* Flash 2 wait state */
    FLASH_SetLatency(FLASH_Latency_2);
 
    /* HCLK = SYSCLK */
    RCC_HCLKConfig(RCC_SYSCLK_Div1); 
  
    /* PCLK2 = HCLK */
    RCC_PCLK2Config(RCC_HCLK_Div1); 

    /* PCLK1 = HCLK/2 */
    RCC_PCLK1Config(RCC_HCLK_Div2);

    /* PLLCLK = 8MHz * 9 = 72 MHz */
    RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

    /* Enable PLL */ 
    RCC_PLLCmd(ENABLE);

    /* Wait till PLL is ready */
    while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
    {
    }

    /* Select PLL as system clock source */
    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

    /* Wait till PLL is used as system clock source */
    while(RCC_GetSYSCLKSource() != 0x08)
    {
    }
  }
}

/*******************************************************************************
* Function Name  : NVIC_Config
* Description    : Configures SDIO IRQ channel.
* Input          : None
* Output         : None
* Return         : 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_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

/*******************************************************************************
* Function Name  : Buffercmp
* Description    : Compares two buffers.
* Input          : - pBuffer1, pBuffer2: buffers to be compared.
*                : - BufferLength: buffer's length
* Output         : None
* Return         : PASSED: pBuffer1 identical to pBuffer2
*                  FAILED: pBuffer1 differs from pBuffer2
*******************************************************************************/
TestStatus Buffercmp(u32* pBuffer1, u32* pBuffer2, u16 BufferLength)
{
  while (BufferLength--)
  {
    if (*pBuffer1 != *pBuffer2)
    {
      return FAILED;
    }

    pBuffer1++;
    pBuffer2++;
  }

  return PASSED;
}

/*******************************************************************************
* Function name : Fill_Buffer
* Description   : Fills buffer with user predefined data.
* Input         : - pBuffer: pointer on the Buffer to fill
*                 - BufferLenght: size of the buffer to fill
*                 - Offset: first value to fill on the Buffer
* Output        : None
* Return        : None
*******************************************************************************/
void Fill_Buffer(u32 *pBuffer, u16 BufferLenght, u32 Offset)
{
  u16 index = 0;

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

/*******************************************************************************
* Function name : eBuffercmp
* Description    : Checks if a buffer has all its values are equal to zero.
* Input          : - pBuffer: buffer to be compared.
*                : - BufferLength: buffer's length
* Output         : None
* Return         : PASSED: pBuffer values are zero
*                  FAILED: At least one value from pBuffer buffer is diffrent 
*                          from zero.
*******************************************************************************/
TestStatus eBuffercmp(u32* pBuffer, u16 BufferLength)
{
  while (BufferLength--)
  {
    if (*pBuffer != 0x00)
    {
      return FAILED;
    }

    pBuffer++;
  }

  return PASSED;
}

#ifdef  DEBUG
/*******************************************************************************
* Function Name  : assert_failed
* Description    : Reports the name of the source file and the source line number
*                  where the assert_param error has occurred.
* Input          : - file: pointer to the source file name
*                  - line: assert_param error line source number
* Output         : None
* Return         : None
*******************************************************************************/
void assert_failed(u8* file, u32 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

/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/