Posted on November 14, 2017 at 09:39there is something wrong with my stm32f427VI while i'm trying to operate sdio.
i am init the sdio interface in pooling mode.
after this ,while i call HAL_SD_WriteBlocks.it's return HAL_ERROR.
and Error code is 16 Transmit FIFO underrun.
but the HAL_SD_ReadBlocks works fine.
can any one help me with this problem,please
this nagged me for many days.
here is my init part:
uint8_t BSP_SD_Init(void)
{
uint8_t SD_state = MSD_OK;
uSdHandle.Instance = SDIO;
uSdHandle.Init.ClockEdge = SDIO_CLOCK_EDGE_RISING;
uSdHandle.Init.ClockBypass = SDIO_CLOCK_BYPASS_DISABLE;
uSdHandle.Init.ClockPowerSave = SDIO_CLOCK_POWER_SAVE_DISABLE;
uSdHandle.Init.BusWide = SDIO_BUS_WIDE_1B;
uSdHandle.Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_DISABLE;
uSdHandle.Init.ClockDiv = SDIO_TRANSFER_CLK_DIV;
if (HAL_SD_Init(&uSdHandle) != HAL_OK)
SD_state = MSD_ERROR;
if (SD_state == MSD_OK)
{
if (HAL_SD_ConfigWideBusOperation(&uSdHandle, SDIO_BUS_WIDE_4B) == HAL_OK)
SD_state = MSD_OK;
else
SD_state = MSD_ERROR;
}
return SD_state;
}
void HAL_SD_MspInit(SD_HandleTypeDef *hsd)
{
if (hsd->Instance == SDIO)
{
GPIO_InitTypeDef GPIO_Init_Structure;
/* Enable SDIO clock */
__HAL_RCC_SDIO_CLK_ENABLE();
/* Enable GPIOs clock */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
/* Common GPIO configuration */
GPIO_Init_Structure.Mode = GPIO_MODE_AF_PP;
GPIO_Init_Structure.Pull = GPIO_PULLUP;
GPIO_Init_Structure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_Init_Structure.Alternate = GPIO_AF12_SDIO;
/* GPIOC configuration */
GPIO_Init_Structure.Pin = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12;
HAL_GPIO_Init(GPIOC, &GPIO_Init_Structure);
/* GPIOD configuration */
GPIO_Init_Structure.Pin = GPIO_PIN_2;
HAL_GPIO_Init(GPIOD, &GPIO_Init_Structure);
}
HAL_StatusTypeDef sd = HAL_SD_WriteBlocks(&uSdHandle, buffer, 1, 1, 100000);//HAL_ERROR
HAL_SD_CardStateTypeDef sta = HAL_SD_GetCardState(&uSdHandle);//HAL_SD_CARD_TRANSFER
uint32_t ero = HAL_SD_GetError(&uSdHandle);//ero=16/Transmit FIFO underrun
is there anything i missed?or wrong?
