Question
Something wrong with SDIO
Posted on November 14, 2017 at 09:39
there 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 underrunis there anything i missed?or wrong?
