/**
* @brief Initializes the SD/SD communication.
* @param None
* @retval The SD Response:
* - MSD_ERROR : Sequence failed
* - MSD_OK : Sequence succeed
*/
uint8_t BSP_SD_Init(void)
{
/* Configure IO functionalities for SD pin */
SD_IO_Init();
/* Check SD card detect pin */
if(BSP_SD_IsDetected()==SD_NOT_PRESENT)
{
SdStatus = SD_NOT_PRESENT;
return MSD_ERROR;
}
else
{
SdStatus = SD_PRESENT;
}
/* SD initialized and set to SPI mode properly */
return (SD_GoIdleState());
}
/**
* @brief Initializes the SD/SD communication.
* @param None
* @retval The SD Response:
* - SD_RESPONSE_FAILURE: Sequence failed
* - SD_RESPONSE_NO_ERROR: Sequence succeed
*/
SD_Error SD_Init(void)
{
uint32_t i = 0;
/*!< Initialize SD_SPI */
SD_LowLevel_Init();
/*!< SD chip select high */
SD_CS_HIGH();
/*!< Send dummy byte 0xFF, 10 times with CS high */
/*!< Rise CS and MOSI for 80 clocks cycles */
for (i = 0; i <= 9; i++)
{
/*!< Send dummy byte 0xFF */
SD_WriteByte(SD_DUMMY_BYTE);
}
/*------------Put SD in SPI mode--------------*/
/*!< SD initialized and set to SPI mode properly */
return (SD_GoIdleState());
}
/**
* @brief Initializes the SD/SD communication.
* @param None
* @retval The SD Response:
* - MSD_ERROR: Sequence failed
* - MSD_OK: Sequence succeed
*/
uint8_t BSP_SD_Init(void)
{
uint8_t status = MSD_ERROR;
/* Configure IO functionalities for SD pin */
SD_IO_Init();
/* SD detection pin is not physically mapped on the Adafruit shield */
SdStatus = SD_PRESENT;
/* SD initialized and set to SPI mode properly */
status = SD_GoIdleState();
if (status == SD_RESPONSE_NO_ERROR)
{
return MSD_OK;
}
else
{
return MSD_ERROR;
}
}
/**
* @brief Initializes the SD/SD communication.
* @param None
* @retval The SD Response:
* - SD_RESPONSE_FAILURE: Sequence failed
* - SD_RESPONSE_NO_ERROR: Sequence succeed
*/
SD_Error SD_Init(void)
{
uint32_t TimeOut, i = 0;
SD_Error Status = SD_RESPONSE_NO_ERROR;
/*!< Initialize SD_SPI 初始化SPI相应管脚与处理器的SPI接口 */
//printf("(SD Init in SPI mode)");
SD_LowLevel_Init();
SD_SPI_SetSpeedLow();
//rt_kprintf("sd_init 0\n");
/*------------Put SD in SPI mode--------------*/
/*!< SD initialized and set to SPI mode properly */
TimeOut = 0;
do
{
/*!< SD chip select high */
SD_CS_HIGH();
/*!< Send dummy byte 0xFF, 10 times with CS high */
/*!< Rise CS and MOSI for 80 clocks cycles */
for (i = 0; i <= 9; i++)
{
/*!< Send dummy byte 0xFF */
SD_WriteByte(SD_DUMMY_BYTE);
}
Status = SD_GoIdleState();
//rt_kprintf("sd_init 1 %d\n",(uint32_t)Status);
if(TimeOut > 6)
{
break;
}
TimeOut++;
}while(Status);
SD_SPI_SetSpeedHi();
return (Status);
}