/**
* @brief Initializes the SD MSP.
* @retval None
*/
static void SD_MspInit(void)
{
GPIO_InitTypeDef gpioinitstruct = {0};
/* Enable SDIO clock */
__HAL_RCC_SDIO_CLK_ENABLE();
/* Enable DMA2 clocks */
__DMAx_TxRx_CLK_ENABLE();
/* Enable GPIOs clock */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__SD_DETECT_GPIO_CLK_ENABLE();
/* Common GPIO configuration */
gpioinitstruct.Mode = GPIO_MODE_AF_PP;
gpioinitstruct.Pull = GPIO_PULLUP;
gpioinitstruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
gpioinitstruct.Alternate = GPIO_AF12_SDIO;
/* GPIOC configuration */
gpioinitstruct.Pin = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12;
HAL_GPIO_Init(GPIOC, &gpioinitstruct);
/* GPIOD configuration */
gpioinitstruct.Pin = GPIO_PIN_2;
HAL_GPIO_Init(GPIOD, &gpioinitstruct);
/* SD Card detect pin configuration */
gpioinitstruct.Mode = GPIO_MODE_INPUT;
gpioinitstruct.Pull = GPIO_PULLUP;
gpioinitstruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
gpioinitstruct.Pin = SD_DETECT_PIN;
HAL_GPIO_Init(SD_DETECT_GPIO_PORT, &gpioinitstruct);
/* NVIC configuration for SDIO interrupts */
HAL_NVIC_SetPriority(SDIO_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(SDIO_IRQn);
/* DMA initialization should be done here but , as there is only one channel for RX and TX it is configured and done directly when required*/
}
/**
* @brief Initializes the SD MSP.
* @param None
* @retval None
*/
static void SD_MspInit(void)
{
static DMA_HandleTypeDef dmaRxHandle;
static DMA_HandleTypeDef dmaTxHandle;
GPIO_InitTypeDef GPIO_Init_Structure;
SD_HandleTypeDef *hsd = &uSdHandle;
/* Enable SDIO clock */
__SDIO_CLK_ENABLE();
/* Enable DMA2 clocks */
__DMAx_TxRx_CLK_ENABLE();
/* Enable GPIOs clock */
__GPIOC_CLK_ENABLE();
__GPIOD_CLK_ENABLE();
__SD_DETECT_GPIO_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_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);
/* SD Card detect pin configuration */
GPIO_Init_Structure.Mode = GPIO_MODE_INPUT;
GPIO_Init_Structure.Pull = GPIO_PULLUP;
GPIO_Init_Structure.Speed = GPIO_SPEED_HIGH;
GPIO_Init_Structure.Pin = SD_DETECT_PIN;
HAL_GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_Init_Structure);
/* NVIC configuration for SDIO interrupts */
HAL_NVIC_SetPriority(SDIO_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(SDIO_IRQn);
/* Configure DMA Rx parameters */
dmaRxHandle.Init.Channel = SD_DMAx_Rx_CHANNEL;
dmaRxHandle.Init.Direction = DMA_PERIPH_TO_MEMORY;
dmaRxHandle.Init.PeriphInc = DMA_PINC_DISABLE;
dmaRxHandle.Init.MemInc = DMA_MINC_ENABLE;
dmaRxHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
dmaRxHandle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
dmaRxHandle.Init.Mode = DMA_PFCTRL;
dmaRxHandle.Init.Priority = DMA_PRIORITY_VERY_HIGH;
dmaRxHandle.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
dmaRxHandle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
dmaRxHandle.Init.MemBurst = DMA_MBURST_INC4;
dmaRxHandle.Init.PeriphBurst = DMA_PBURST_INC4;
dmaRxHandle.Instance = SD_DMAx_Rx_STREAM;
/* Associate the DMA handle */
__HAL_LINKDMA(hsd, hdmarx, dmaRxHandle);
/* Deinitialize the stream for new transfer */
HAL_DMA_DeInit(&dmaRxHandle);
/* Configure the DMA stream */
HAL_DMA_Init(&dmaRxHandle);
/* Configure DMA Tx parameters */
dmaTxHandle.Init.Channel = SD_DMAx_Tx_CHANNEL;
dmaTxHandle.Init.Direction = DMA_MEMORY_TO_PERIPH;
dmaTxHandle.Init.PeriphInc = DMA_PINC_DISABLE;
dmaTxHandle.Init.MemInc = DMA_MINC_ENABLE;
dmaTxHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
dmaTxHandle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
dmaTxHandle.Init.Mode = DMA_PFCTRL;
dmaTxHandle.Init.Priority = DMA_PRIORITY_VERY_HIGH;
dmaTxHandle.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
dmaTxHandle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
dmaTxHandle.Init.MemBurst = DMA_MBURST_INC4;
dmaTxHandle.Init.PeriphBurst = DMA_PBURST_INC4;
dmaTxHandle.Instance = SD_DMAx_Tx_STREAM;
/* Associate the DMA handle */
__HAL_LINKDMA(hsd, hdmatx, dmaTxHandle);
/* Deinitialize the stream for new transfer */
HAL_DMA_DeInit(&dmaTxHandle);
/* Configure the DMA stream */
HAL_DMA_Init(&dmaTxHandle);
/* NVIC configuration for DMA transfer complete interrupt */
HAL_NVIC_SetPriority(SD_DMAx_Rx_IRQn, 6, 0);
HAL_NVIC_EnableIRQ(SD_DMAx_Rx_IRQn);
/* NVIC configuration for DMA transfer complete interrupt */
HAL_NVIC_SetPriority(SD_DMAx_Tx_IRQn, 6, 0);
HAL_NVIC_EnableIRQ(SD_DMAx_Tx_IRQn);
}
