7) 修改 main.c。参考\STM32Cube_FW_F4_V1.11.0\Projects\STM324x9I_EVAL\Applications\FatFs\FatFs_uSD\Src\main.c，
修改此文件，如下：/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F4xx_StdPeriph_Examples
* @{
*/
/** @addtogroup SDIO_uSDCard
* @{
*/
/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*//* Private variables ---------------------------------------------------------*/
FATFS SDFatFs; /* File system object for SD card logical drive */
FIL MyFile; /* File object */
char SDPath[4]; /* SD card logical drive path */
/* Private function prototypes -----------------------------------------------*/
static void NVIC_Configuration(void);
static void Error_Handler(void);
/* Private functions ---------------------------------------------------------*/
/**
* [url=home.php?mod=space&uid=247401]@brief[/url] 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
files (startup_stm32f40_41xxx.s/startup_stm32f427_437xx.s)
before to branch to application main. To reconfigure the default setting
of SystemInit() function, refer to system_stm32f4xx.c file
*/
FRESULT res; /* FatFs function common result
code */
uint32_t byteswritten, bytesread; /* File write/read counts */
uint8_t wtext[] = "STM32 with FatFs demo [url=home.php?mod=space&uid=72445]@[/url] std lib"; /* File write buffer */
uint8_t rtext[100]; /* File read buffer */
/* Initialize LEDs available on EVAL board */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED3);
/* NVIC Configuration */
NVIC_Configuration();
/*##-1- Link the micro SD disk I/O driver ##################################*/
if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0)
{
/*##-2- Register the file system object to the FatFs module ##############*/
if(f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) != FR_OK)
{
/* FatFs Initialization Error */
Error_Handler();
}
else
{
/*##-3- Create a FAT file system (format) on the logical drive #########*//* WARNING: Formatting the uSD card will delete all content on the device */
if(f_mkfs((TCHAR const*)SDPath, 0, 0) != FR_OK)
{
/* FatFs Format Error */
Error_Handler();
}
else
{
/*##-4- Create and Open a new text file object with write access #####*/
if(f_open(&MyFile, "STM32STD.TXT", FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
{
/* 'STM32STD.TXT' file Open for write Error */
Error_Handler();
}
else
{
/*##-5- Write data to the text file ################################*/
res = f_write(&MyFile, wtext, sizeof(wtext), (void *)&byteswritten);
if((byteswritten == 0) || (res != FR_OK))
{
/* 'STM32STD.TXT' file Write or EOF Error */
Error_Handler();
}
else
{
/*##-6- Close the open text file #################################*/
f_close(&MyFile);
/*##-7- Open the text file object with read access ###############*/
if(f_open(&MyFile, "STM32STD.TXT", FA_READ) != FR_OK)
{
/* 'STM32STD.TXT' file Open for read Error */
Error_Handler();
}
else
{
/*##-8- Read data from the text file ###########################*/
res = f_read(&MyFile, rtext, sizeof(rtext), (UINT*)&bytesread);
if((bytesread == 0) || (res != FR_OK))
{
/* 'STM32STD.TXT' file Read or EOF Error */
Error_Handler();
}
else
{
/*##-9- Close the open text file #############################*/
f_close(&MyFile);/*##-10- Compare read data with the expected data ############*/
if((bytesread != byteswritten))
{
/* Read data is different from the expected data */
Error_Handler();
}
else
{
/* Success of the demo: no error occurrence */
STM_EVAL_LEDOn(LED1);
}
}
}
}
}
}
}
}
/*##-11- Unlink the micro SD disk I/O driver ###############################*/
FATFS_UnLinkDriver(SDPath);
/* Infinite loop */
while (1)
{
}
}
/**
* @brief Configures SDIO IRQ channel.
* @param None
* @retval None
*/
static 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);
NVIC_InitStructure.NVIC_IRQChannel = SD_SDIO_DMA_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_Init(&NVIC_InitStructure);}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
/* Turn LED3 on */
STM_EVAL_LEDOn(LED3);
while(1)
{
}
}
#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
还需要在 main.h 中加入：
/* FatFs includes component */
#include "ff_gen_drv.h"
#include "sd_diskio.h"
8) 编译，成功。
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