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/**
******************************************************************************
* @file stm324xg_eval_sd.c
* @author MCD Application Team
* @brief This file includes the uSD card driver mounted on STM324xG-EVAL
* evaluation board.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* File Info : -----------------------------------------------------------------
User NOTES
1. How To use this driver:
--------------------------
- This driver is used to drive the micro SD external card mounted on STM324xG-EVAL
evaluation board.
- This driver does not need a specific component driver for the micro SD device
to be included with.
2. Driver description:
---------------------
+ Initialization steps:
o Initialize the micro SD card using the BSP_SD_Init() function. This
function includes the MSP layer hardware resources initialization and the
SDIO interface configuration to interface with the external micro SD. It
also includes the micro SD initialization sequence.
o To check the SD card presence you can use the function BSP_SD_IsDetected() which
returns the detection status
o If SD presence detection interrupt mode is desired, you must configure the
SD detection interrupt mode by calling the function BSP_SD_ITConfig(). The interrupt
is generated as an external interrupt whenever the micro SD card is
plugged/unplugged in/from the evaluation board. The SD detection interrupt
is handled by calling the function BSP_SD_DetectIT() which is called in the IRQ
handler file, the user callback is implemented in the function BSP_SD_DetectCallback().
o The function BSP_SD_GetCardInfo() is used to get the micro SD card information
which is stored in the structure "HAL_SD_CardInfoTypedef".
+ Micro SD card operations
o The micro SD card can be accessed with read/write block(s) operations once
it is ready for access. The access can be performed whether using the polling
mode by calling the functions BSP_SD_ReadBlocks()/BSP_SD_WriteBlocks(), or by DMA
transfer using the functions BSP_SD_ReadBlocks_DMA()/BSP_SD_WriteBlocks_DMA()
o The DMA transfer complete is used with interrupt mode. Once the SD transfer
is complete, the SD interrupt is handled using the function BSP_SD_IRQHandler(),
the DMA Tx/Rx transfer complete are handled using the functions
BSP_SD_DMA_Tx_IRQHandler()/BSP_SD_DMA_Rx_IRQHandler(). The corresponding user callbacks
are implemented by the user at application level.
o The SD erase block(s) is performed using the function BSP_SD_Erase() with specifying
the number of blocks to erase.
o The SD runtime status is returned when calling the function BSP_SD_GetCardState().
------------------------------------------------------------------------------*/
/* Includes ------------------------------------------------------------------*/
#include "stm324xg_eval_sd.h"
/** @addtogroup BSP
* @{
*/
/** @addtogroup STM324xG_EVAL
* @{
*/
/** @defgroup STM324xG_EVAL_SD STM324xG EVAL SD
* @{
*/
/** @defgroup STM324xG_EVAL_SD_Private_Variables STM324xG EVAL SD Private Variables
* @{
*/
SD_HandleTypeDef uSdHandle;
/**
* @}
*/
/** @defgroup STM324xG_EVAL_SD_Private_Functions STM324xG EVAL SD Private Functions
* @{
*/
/**
* @brief Initializes the SD card device.
* @retval SD status.
*/
uint8_t BSP_SD_Init(void)
{
uint8_t SD_state = MSD_OK;
/* uSD device interface configuration */
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;
/* Check if the SD card is plugged in the slot */
if(BSP_SD_IsDetected() != SD_PRESENT)
{
return MSD_ERROR;
}
/* Msp SD initialization */
BSP_SD_MspInit(&uSdHandle, NULL);
if(HAL_SD_Init(&uSdHandle) != HAL_OK)
{
SD_state = MSD_ERROR;
}
/* Configure SD Bus width */
if(SD_state == MSD_OK)
{
/* Enable wide operation */
if(HAL_SD_ConfigWideBusOperation(&uSdHandle, SDIO_BUS_WIDE_4B) != HAL_OK)
{
SD_state = MSD_ERROR;
}
else
{
SD_state = MSD_OK;
}
}
return SD_state;
}
/**
* @brief Configures Interrupt mode for SD detection pin.
* @retval Returns 0
*/
uint8_t BSP_SD_ITConfig(void)
{
GPIO_InitTypeDef GPIO_Init_Structure;
/* Configure Interrupt mode for SD detection pin */
GPIO_Init_Structure.Mode = GPIO_MODE_IT_RISING_FALLING;
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(SD_DETECT_IRQn, 0x0E, 0);
HAL_NVIC_EnableIRQ(SD_DETECT_IRQn);
return 0;
}
/**
* @brief Detects if SD card is correctly plugged in the memory slot or not.
* @retval Returns if SD is detected or not
*/
uint8_t BSP_SD_IsDetected(void)
{
__IO uint8_t status = SD_PRESENT;
/* Check SD card detect pin */
if(HAL_GPIO_ReadPin(SD_DETECT_GPIO_PORT, SD_DETECT_PIN) != GPIO_PIN_RESET)
{
status = SD_NOT_PRESENT;
}
return status;
}
/**
* @brief SD detect IT treatment
*/
void BSP_SD_DetectIT(void)
{
/* SD detect IT callback */
BSP_SD_DetectCallback();
}
/**
* @brief SD detect IT detection callback
*/
__weak void BSP_SD_DetectCallback(void)
{
/* NOTE: This function Should not be modified, when the callback is needed,
the BSP_SD_DetectCallback could be implemented in the user file
*/
}
/**
* @brief Reads block(s) from a specified address in an SD card, in polling mode.
* @param pData: Pointer to the buffer that will contain the data to transmit
* @param ReadAddr: Address from where data is to be read
* @param NumOfBlocks: Number of SD blocks to read
* @param Timeout: Timeout for read operation
* @retval SD status
*/
uint8_t BSP_SD_ReadBlocks(uint32_t *pData, uint32_t ReadAddr, uint32_t NumOfBlocks, uint32_t Timeout)
{
if(HAL_SD_ReadBlocks(&uSdHandle, (uint8_t *)pData, ReadAddr, NumOfBlocks, Timeout) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Writes block(s) to a specified address in an SD card, in polling mode.
* @param pData: Pointer to the buffer that will contain the data to transmit
* @param WriteAddr: Address from where data is to be written
* @param NumOfBlocks: Number of SD blocks to write
* @param Timeout: Timeout for write operation
* @retval SD status
*/
uint8_t BSP_SD_WriteBlocks(uint32_t *pData, uint32_t WriteAddr, uint32_t NumOfBlocks, uint32_t Timeout)
{
if(HAL_SD_WriteBlocks(&uSdHandle, (uint8_t *)pData, WriteAddr, NumOfBlocks, Timeout) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Reads block(s) from a specified address in an SD card, in DMA mode.
* @param pData: Pointer to the buffer that will contain the data to transmit
* @param ReadAddr: Address from where data is to be read
* @param NumOfBlocks: Number of SD blocks to read
* @retval SD status
*/
uint8_t BSP_SD_ReadBlocks_DMA(uint32_t *pData, uint32_t ReadAddr, uint32_t NumOfBlocks)
{
/* Read block(s) in DMA transfer mode */
if(HAL_SD_ReadBlocks_DMA(&uSdHandle, (uint8_t *)pData, ReadAddr, NumOfBlocks) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Writes block(s) to a specified address in an SD card, in DMA mode.
* @param pData: Pointer to the buffer that will contain the data to transmit
* @param WriteAddr: Address from where data is to be written
* @param NumOfBlocks: Number of SD blocks to write
* @retval SD status
*/
uint8_t BSP_SD_WriteBlocks_DMA(uint32_t *pData, uint32_t WriteAddr, uint32_t NumOfBlocks)
{
/* Write block(s) in DMA transfer mode */
if(HAL_SD_WriteBlocks_DMA(&uSdHandle, (uint8_t *)pData, WriteAddr, NumOfBlocks) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Erases the specified memory area of the given SD card.
* @param StartAddr: Start byte address
* @param EndAddr: End byte address
* @retval SD status
*/
uint8_t BSP_SD_Erase(uint32_t StartAddr, uint32_t EndAddr)
{
if(HAL_SD_Erase(&uSdHandle, StartAddr, EndAddr) != HAL_OK)
{
return MSD_ERROR;
}
else
{
return MSD_OK;
}
}
/**
* @brief Initializes the SD MSP.
* @param hsd: SD handle
* @param Params : pointer on additional configuration parameters, can be NULL.
*/
__weak void BSP_SD_MspInit(SD_HandleTypeDef *hsd, void *Params)
{
static DMA_HandleTypeDef dmaRxHandle;
static DMA_HandleTypeDef dmaTxHandle;
GPIO_InitTypeDef GPIO_Init_Structure;
/* 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 */
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, 0x0E, 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, 0x0F, 0);
HAL_NVIC_EnableIRQ(SD_DMAx_Rx_IRQn);
/* NVIC configuration for DMA transfer complete interrupt */
HAL_NVIC_SetPriority(SD_DMAx_Tx_IRQn, 0x0F, 0);
HAL_NVIC_EnableIRQ(SD_DMAx_Tx_IRQn);
}
/**
* @brief Gets the current SD card data status.
* @retval Data transfer state.
* This value can be one of the following values:
* @arg SD_TRANSFER_OK: No data transfer is acting
* @arg SD_TRANSFER_BUSY: Data transfer is acting
*/
uint8_t BSP_SD_GetCardState(void)
{
return((HAL_SD_GetCardState(&uSdHandle) == HAL_SD_CARD_TRANSFER ) ? SD_TRANSFER_OK : SD_TRANSFER_BUSY);
}
/**
* @brief Get SD information about specific SD card.
* @param CardInfo: Pointer to HAL_SD_CardInfoTypedef structure
* @retval None
*/
void BSP_SD_GetCardInfo(HAL_SD_CardInfoTypeDef *CardInfo)
{
/* Get SD card Information */
HAL_SD_GetCardInfo(&uSdHandle, CardInfo);
}
/**
* @brief SD Abort callbacks
* @param hsd: SD handle
* @retval None
*/
void HAL_SD_AbortCallback(SD_HandleTypeDef *hsd)
{
BSP_SD_AbortCallback();
}
/**
* @brief Tx Transfer completed callbacks
* @param hsd: SD handle
* @retval None
*/
void HAL_SD_TxCpltCallback(SD_HandleTypeDef *hsd)
{
BSP_SD_WriteCpltCallback();
}
/**
* @brief Rx Transfer completed callbacks
* @param hsd: SD handle
* @retval None
*/
void HAL_SD_RxCpltCallback(SD_HandleTypeDef *hsd)
{
BSP_SD_ReadCpltCallback();
}
/**
* @brief BSP SD Abort callbacks
* @retval None
*/
__weak void BSP_SD_AbortCallback(void)
{
}
/**
* @brief BSP Tx Transfer completed callbacks
* @retval None
*/
__weak void BSP_SD_WriteCpltCallback(void)
{
}
/**
* @brief BSP Rx Transfer completed callbacks
* @retval None
*/
__weak void BSP_SD_ReadCpltCallback(void)
{
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
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