Posted on March 01, 2017 at 01:25
h.Rick
Clive is right! please follow his advise.
You have to start from the low level sdio testing. Forget about whatever ff, fmount, fopen etc.
YOu can try to use this to test.
int main(void)
{
char usbbuffer[500];
uint8_t SD_state = MSD_OK;
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_SDIO_SD_Init();
/* USER CODE BEGIN 2 */
/* USER CODE BEGIN 2 */
SD_Test_LowLevel();
while(1){;}
}
SD_Test_LowLevel() is defined as:
the function sendtextmsgtousb is for debugging only. you don't need that.
Error_Handler() is showing error by LED and halt system.
void SD_Test_LowLevel(void)
{
uint8_t SD_state = MSD_OK;
static uint8_t prev_status = 0;
char usbbuffer[200];
SD_state = BSP_SD_Init();
if(SD_state != MSD_OK)
{
sprintf(usbbuffer,'
---initialize failed ---
');//export it to char buffer first.
SendTextMsgToUSB(usbbuffer); //send the txt back
Error_Handler();
}
//initialization is done. Now go ahead for SD operation in low level
SD_state = BSP_SD_Erase(BLOCK_START_ADDR, (BLOCKSIZE * NUM_OF_BLOCKS));
if(SD_state != MSD_OK)
{
sprintf(usbbuffer,'
---erase failed ---
');//export it to char buffer first.
SendTextMsgToUSB(usbbuffer); //send the txt back
Error_Handler();
}
/* Fill the buffer to write */
Fill_Buffer(aTxBuffer, BUFFER_WORDS_SIZE, 0x22FF);
SD_state = BSP_SD_WriteBlocks(aTxBuffer, BLOCK_START_ADDR, BLOCKSIZE, NUM_OF_BLOCKS);
if(SD_state != MSD_OK)
{
sprintf(usbbuffer,'
---writing failed ---
');//export it to char buffer first.
SendTextMsgToUSB(usbbuffer); //send the txt back
Error_Handler();
}
SD_state = BSP_SD_ReadBlocks(aRxBuffer, BLOCK_START_ADDR, BLOCKSIZE, NUM_OF_BLOCKS);
if(SD_state != MSD_OK)
{
sprintf(usbbuffer,'
---reading failed ---
');//export it to char buffer first.
SendTextMsgToUSB(usbbuffer); //send the txt back
Error_Handler();
}
else
{
sprintf(usbbuffer,'
---Reading OK ---
');//export it to char buffer first.
SendTextMsgToUSB(usbbuffer); //send the txt back
if(Buffercmp(aTxBuffer, aRxBuffer, BUFFER_WORDS_SIZE) > 0)
{
sprintf(usbbuffer,'
---reading/writing compare failed ---
');//export it to char buffer first.
SendTextMsgToUSB(usbbuffer); //send the txt back
Error_Handler();
}
else
{
sprintf(usbbuffer,'
---Testing is done, OK ---
');//export it to char buffer first.
SendTextMsgToUSB(usbbuffer); //send the txt back
}
}
GREEN_LED_ON;//Good
while (1)
{
}
}
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