移植ST官方demo，做了部分修改

#include "stm32f10x.h" #include "sdio_sd.h"/* RCC時鐘配置 */ void RCC_config(void) { ErrorStatus HSEStartUpStatus;/* RCC寄存器設置為默認配置 */RCC_DeInit();/* 打開外部高速時鐘 */RCC_HSEConfig(RCC_HSE_ON);/* 等待外部高速時鐘穩定 */HSEStartUpStatus = RCC_WaitForHSEStartUp();if(HSEStartUpStatus == SUCCESS) { /* 設置HCLK = SYSCLK */RCC_HCLKConfig(RCC_SYSCLK_Div1);/* 設置PCLK2 = HCLK */RCC_PCLK2Config(RCC_HCLK_Div1);/* 設置PCLK1 = HCLK / 2 */RCC_PCLK1Config(RCC_HCLK_Div2);/* 設置FLASH代碼延時 */FLASH_SetLatency(FLASH_Latency_2);/* 使能預取址緩存 */FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);/* 設置PLL時鐘源為HSE倍頻9 72MHz */RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);/* 使能PLL */RCC_PLLCmd(ENABLE);/* 等待PLL穩定 */while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);/* 設置PLL為系統時鐘源 */RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);/* 等待系統時鐘源切換到PLL */while(RCC_GetSYSCLKSource() != 0x08);} }/* 中斷配置 */ void NVIC_config(void) {/* 選擇中斷分組2 */NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); }uint8_t wbuf[512]; uint8_t rbuf[512];int main(void) {/* 時鐘配置 */RCC_config();/* 中斷配置 */NVIC_config();if(SD_Init() == SD_OK){for(uint16_t i = 0; i < 512; i++)wbuf[i] = i+1;SD_WriteBlock(wbuf, 0x00, 512);SD_WaitWriteOperation();while(SD_GetStatus() != SD_TRANSFER_OK);SD_ReadBlock(rbuf, 0x00, 512);SD_WaitReadOperation();while(SD_GetStatus() != SD_TRANSFER_OK);}while(1){} } /********************************************************************************* @file stm32_eval_sdio_sd.h* @author MCD Application Team* @version V4.5.0* @date 07-March-2011* @brief This file contains all the functions prototypes for the SD Card * stm32_eval_sdio_sd driver firmware library.******************************************************************************* @attention** THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.** <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>****************************************************************************** */ /* Define to prevent recursive inclusion -------------------------------------*/ #ifndef __STM32_EVAL_SDIO_SD_H #define __STM32_EVAL_SDIO_SD_H#ifdef __cplusplusextern "C" { #endif/* Includes ------------------------------------------------------------------*/ #include "stm32f10x.h"/** @addtogroup Utilities* @{*//** @addtogroup STM32_EVAL* @{*/ /** @addtogroup Common* @{*//** @addtogroup STM32_EVAL_SDIO_SD* @{*/#define SDIO_FIFO_ADDRESS ((uint32_t)0x40018080) /** * @brief SDIO Intialization Frequency (400KHz max)*/ #define SDIO_INIT_CLK_DIV ((uint8_t)0xB2) /** * @brief SDIO Data Transfer Frequency (25MHz max) */ #define SDIO_TRANSFER_CLK_DIV ((uint8_t)0x01) /** @defgroup STM32_EVAL_SDIO_SD_Exported_Types* @{*/ typedef enum { /** * @brief SDIO specific error defines */ SD_CMD_CRC_FAIL = (1), /*!< Command response received (but CRC check failed) */SD_DATA_CRC_FAIL = (2), /*!< Data bock sent/received (CRC check Failed) */SD_CMD_RSP_TIMEOUT = (3), /*!< Command response timeout */SD_DATA_TIMEOUT = (4), /*!< Data time out */SD_TX_UNDERRUN = (5), /*!< Transmit FIFO under-run */SD_RX_OVERRUN = (6), /*!< Receive FIFO over-run */SD_START_BIT_ERR = (7), /*!< Start bit not detected on all data signals in widE bus mode */SD_CMD_OUT_OF_RANGE = (8), /*!< CMD's argument was out of range.*/SD_ADDR_MISALIGNED = (9), /*!< Misaligned address */SD_BLOCK_LEN_ERR = (10), /*!< Transferred block length is not allowed for the card or the number of transferred bytes does not match the block length */SD_ERASE_SEQ_ERR = (11), /*!< An error in the sequence of erase command occurs.*/SD_BAD_ERASE_PARAM = (12), /*!< An Invalid selection for erase groups */SD_WRITE_PROT_VIOLATION = (13), /*!< Attempt to program a write protect block */SD_LOCK_UNLOCK_FAILED = (14), /*!< Sequence or password error has been detected in unlock command or if there was an attempt to access a locked card */SD_COM_CRC_FAILED = (15), /*!< CRC check of the previous command failed */SD_ILLEGAL_CMD = (16), /*!< Command is not legal for the card state */SD_CARD_ECC_FAILED = (17), /*!< Card internal ECC was applied but failed to correct the data */SD_CC_ERROR = (18), /*!< Internal card controller error */SD_GENERAL_UNKNOWN_ERROR = (19), /*!< General or Unknown error */SD_STREAM_READ_UNDERRUN = (20), /*!< The card could not sustain data transfer in stream read operation. */SD_STREAM_WRITE_OVERRUN = (21), /*!< The card could not sustain data programming in stream mode */SD_CID_CSD_OVERWRITE = (22), /*!< CID/CSD overwrite error */SD_WP_ERASE_SKIP = (23), /*!< only partial address space was erased */SD_CARD_ECC_DISABLED = (24), /*!< Command has been executed without using internal ECC */SD_ERASE_RESET = (25), /*!< Erase sequence was cleared before executing because an out of erase sequence command was received */SD_AKE_SEQ_ERROR = (26), /*!< Error in sequence of authentication. */SD_INVALID_VOLTRANGE = (27),SD_ADDR_OUT_OF_RANGE = (28),SD_SWITCH_ERROR = (29),SD_SDIO_DISABLED = (30),SD_SDIO_FUNCTION_BUSY = (31),SD_SDIO_FUNCTION_FAILED = (32),SD_SDIO_UNKNOWN_FUNCTION = (33),/** * @brief Standard error defines */ SD_INTERNAL_ERROR, SD_NOT_CONFIGURED,SD_REQUEST_PENDING, SD_REQUEST_NOT_APPLICABLE, SD_INVALID_PARAMETER, SD_UNSUPPORTED_FEATURE, SD_UNSUPPORTED_HW, SD_ERROR, SD_OK = 0 } SD_Error;/** * @brief SDIO Transfer state */ typedef enum {SD_TRANSFER_OK = 0,SD_TRANSFER_BUSY = 1,SD_TRANSFER_ERROR } SDTransferState;/** * @brief SD Card States */ typedef enum {SD_CARD_READY = ((uint32_t)0x00000001),SD_CARD_IDENTIFICATION = ((uint32_t)0x00000002),SD_CARD_STANDBY = ((uint32_t)0x00000003),SD_CARD_TRANSFER = ((uint32_t)0x00000004),SD_CARD_SENDING = ((uint32_t)0x00000005),SD_CARD_RECEIVING = ((uint32_t)0x00000006),SD_CARD_PROGRAMMING = ((uint32_t)0x00000007),SD_CARD_DISCONNECTED = ((uint32_t)0x00000008),SD_CARD_ERROR = ((uint32_t)0x000000FF) }SDCardState;/** * @brief Card Specific Data: CSD Register */ typedef struct {__IO uint8_t CSDStruct; /*!< CSD structure */__IO uint8_t SysSpecVersion; /*!< System specification version */__IO uint8_t Reserved1; /*!< Reserved */__IO uint8_t TAAC; /*!< Data read access-time 1 */__IO uint8_t NSAC; /*!< Data read access-time 2 in CLK cycles */__IO uint8_t MaxBusClkFrec; /*!< Max. bus clock frequency */__IO uint16_t CardComdClasses; /*!< Card command classes */__IO uint8_t RdBlockLen; /*!< Max. read data block length */__IO uint8_t PartBlockRead; /*!< Partial blocks for read allowed */__IO uint8_t WrBlockMisalign; /*!< Write block misalignment */__IO uint8_t RdBlockMisalign; /*!< Read block misalignment */__IO uint8_t DSRImpl; /*!< DSR implemented */__IO uint8_t Reserved2; /*!< Reserved */__IO uint32_t DeviceSize; /*!< Device Size */__IO uint8_t MaxRdCurrentVDDMin; /*!< Max. read current @ VDD min */__IO uint8_t MaxRdCurrentVDDMax; /*!< Max. read current @ VDD max */__IO uint8_t MaxWrCurrentVDDMin; /*!< Max. write current @ VDD min */__IO uint8_t MaxWrCurrentVDDMax; /*!< Max. write current @ VDD max */__IO uint8_t DeviceSizeMul; /*!< Device size multiplier */__IO uint8_t EraseGrSize; /*!< Erase group size */__IO uint8_t EraseGrMul; /*!< Erase group size multiplier */__IO uint8_t WrProtectGrSize; /*!< Write protect group size */__IO uint8_t WrProtectGrEnable; /*!< Write protect group enable */__IO uint8_t ManDeflECC; /*!< Manufacturer default ECC */__IO uint8_t WrSpeedFact; /*!< Write speed factor */__IO uint8_t MaxWrBlockLen; /*!< Max. write data block length */__IO uint8_t WriteBlockPaPartial; /*!< Partial blocks for write allowed */__IO uint8_t Reserved3; /*!< Reserded */__IO uint8_t ContentProtectAppli; /*!< Content protection application */__IO uint8_t FileFormatGrouop; /*!< File format group */__IO uint8_t CopyFlag; /*!< Copy flag (OTP) */__IO uint8_t PermWrProtect; /*!< Permanent write protection */__IO uint8_t TempWrProtect; /*!< Temporary write protection */__IO uint8_t FileFormat; /*!< File Format */__IO uint8_t ECC; /*!< ECC code */__IO uint8_t CSD_CRC; /*!< CSD CRC */__IO uint8_t Reserved4; /*!< always 1*/ } SD_CSD;/** * @brief Card Identification Data: CID Register */ typedef struct {__IO uint8_t ManufacturerID; /*!< ManufacturerID */__IO uint16_t OEM_AppliID; /*!< OEM/Application ID */__IO uint32_t ProdName1; /*!< Product Name part1 */__IO uint8_t ProdName2; /*!< Product Name part2*/__IO uint8_t ProdRev; /*!< Product Revision */__IO uint32_t ProdSN; /*!< Product Serial Number */__IO uint8_t Reserved1; /*!< Reserved1 */__IO uint16_t ManufactDate; /*!< Manufacturing Date */__IO uint8_t CID_CRC; /*!< CID CRC */__IO uint8_t Reserved2; /*!< always 1 */ } SD_CID;/** * @brief SD Card Status */ typedef struct {__IO uint8_t DAT_BUS_WIDTH;__IO uint8_t SECURED_MODE;__IO uint16_t SD_CARD_TYPE;__IO uint32_t SIZE_OF_PROTECTED_AREA;__IO uint8_t SPEED_CLASS;__IO uint8_t PERFORMANCE_MOVE;__IO uint8_t AU_SIZE;__IO uint16_t ERASE_SIZE;__IO uint8_t ERASE_TIMEOUT;__IO uint8_t ERASE_OFFSET; } SD_CardStatus;/** * @brief SD Card information */ typedef struct {SD_CSD SD_csd;SD_CID SD_cid;uint32_t CardCapacity; /*!< Card Capacity */uint32_t CardBlockSize; /*!< Card Block Size */uint16_t RCA;uint8_t CardType; } SD_CardInfo;/*** @}*//** @defgroup STM32_EVAL_SDIO_SD_Exported_Constants* @{*/ /** * @brief SDIO Commands Index */ #define SD_CMD_GO_IDLE_STATE ((uint8_t)0) #define SD_CMD_SEND_OP_COND ((uint8_t)1) #define SD_CMD_ALL_SEND_CID ((uint8_t)2) #define SD_CMD_SET_REL_ADDR ((uint8_t)3) /*!< SDIO_SEND_REL_ADDR for SD Card */ #define SD_CMD_SET_DSR ((uint8_t)4) #define SD_CMD_SDIO_SEN_OP_COND ((uint8_t)5) #define SD_CMD_HS_SWITCH ((uint8_t)6) #define SD_CMD_SEL_DESEL_CARD ((uint8_t)7) #define SD_CMD_HS_SEND_EXT_CSD ((uint8_t)8) #define SD_CMD_SEND_CSD ((uint8_t)9) #define SD_CMD_SEND_CID ((uint8_t)10) #define SD_CMD_READ_DAT_UNTIL_STOP ((uint8_t)11) /*!< SD Card doesn't support it */ #define SD_CMD_STOP_TRANSMISSION ((uint8_t)12) #define SD_CMD_SEND_STATUS ((uint8_t)13) #define SD_CMD_HS_BUSTEST_READ ((uint8_t)14) #define SD_CMD_GO_INACTIVE_STATE ((uint8_t)15) #define SD_CMD_SET_BLOCKLEN ((uint8_t)16) #define SD_CMD_READ_SINGLE_BLOCK ((uint8_t)17) #define SD_CMD_READ_MULT_BLOCK ((uint8_t)18) #define SD_CMD_HS_BUSTEST_WRITE ((uint8_t)19) #define SD_CMD_WRITE_DAT_UNTIL_STOP ((uint8_t)20) /*!< SD Card doesn't support it */ #define SD_CMD_SET_BLOCK_COUNT ((uint8_t)23) /*!< SD Card doesn't support it */ #define SD_CMD_WRITE_SINGLE_BLOCK ((uint8_t)24) #define SD_CMD_WRITE_MULT_BLOCK ((uint8_t)25) #define SD_CMD_PROG_CID ((uint8_t)26) /*!< reserved for manufacturers */ #define SD_CMD_PROG_CSD ((uint8_t)27) #define SD_CMD_SET_WRITE_PROT ((uint8_t)28) #define SD_CMD_CLR_WRITE_PROT ((uint8_t)29) #define SD_CMD_SEND_WRITE_PROT ((uint8_t)30) #define SD_CMD_SD_ERASE_GRP_START ((uint8_t)32) /*!< To set the address of the first writeblock to be erased. (For SD card only) */ #define SD_CMD_SD_ERASE_GRP_END ((uint8_t)33) /*!< To set the address of the last write block of thecontinuous range to be erased. (For SD card only) */ #define SD_CMD_ERASE_GRP_START ((uint8_t)35) /*!< To set the address of the first write block to be erased.(For MMC card only spec 3.31) */#define SD_CMD_ERASE_GRP_END ((uint8_t)36) /*!< To set the address of the last write block of thecontinuous range to be erased. (For MMC card only spec 3.31) */#define SD_CMD_ERASE ((uint8_t)38) #define SD_CMD_FAST_IO ((uint8_t)39) /*!< SD Card doesn't support it */ #define SD_CMD_GO_IRQ_STATE ((uint8_t)40) /*!< SD Card doesn't support it */ #define SD_CMD_LOCK_UNLOCK ((uint8_t)42) #define SD_CMD_APP_CMD ((uint8_t)55) #define SD_CMD_GEN_CMD ((uint8_t)56) #define SD_CMD_NO_CMD ((uint8_t)64)/** * @brief Following commands are SD Card Specific commands.* SDIO_APP_CMD should be sent before sending these commands. */ #define SD_CMD_APP_SD_SET_BUSWIDTH ((uint8_t)6) /*!< For SD Card only */ #define SD_CMD_SD_APP_STAUS ((uint8_t)13) /*!< For SD Card only */ #define SD_CMD_SD_APP_SEND_NUM_WRITE_BLOCKS ((uint8_t)22) /*!< For SD Card only */ #define SD_CMD_SD_APP_OP_COND ((uint8_t)41) /*!< For SD Card only */ #define SD_CMD_SD_APP_SET_CLR_CARD_DETECT ((uint8_t)42) /*!< For SD Card only */ #define SD_CMD_SD_APP_SEND_SCR ((uint8_t)51) /*!< For SD Card only */ #define SD_CMD_SDIO_RW_DIRECT ((uint8_t)52) /*!< For SD I/O Card only */ #define SD_CMD_SDIO_RW_EXTENDED ((uint8_t)53) /*!< For SD I/O Card only *//** * @brief Following commands are SD Card Specific security commands.* SDIO_APP_CMD should be sent before sending these commands. */ #define SD_CMD_SD_APP_GET_MKB ((uint8_t)43) /*!< For SD Card only */ #define SD_CMD_SD_APP_GET_MID ((uint8_t)44) /*!< For SD Card only */ #define SD_CMD_SD_APP_SET_CER_RN1 ((uint8_t)45) /*!< For SD Card only */ #define SD_CMD_SD_APP_GET_CER_RN2 ((uint8_t)46) /*!< For SD Card only */ #define SD_CMD_SD_APP_SET_CER_RES2 ((uint8_t)47) /*!< For SD Card only */ #define SD_CMD_SD_APP_GET_CER_RES1 ((uint8_t)48) /*!< For SD Card only */ #define SD_CMD_SD_APP_SECURE_READ_MULTIPLE_BLOCK ((uint8_t)18) /*!< For SD Card only */ #define SD_CMD_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK ((uint8_t)25) /*!< For SD Card only */ #define SD_CMD_SD_APP_SECURE_ERASE ((uint8_t)38) /*!< For SD Card only */ #define SD_CMD_SD_APP_CHANGE_SECURE_AREA ((uint8_t)49) /*!< For SD Card only */ #define SD_CMD_SD_APP_SECURE_WRITE_MKB ((uint8_t)48) /*!< For SD Card only *//* Uncomment the following line to select the SDIO Data transfer mode */ #define SD_DMA_MODE ((uint32_t)0x00000000) /*#define SD_POLLING_MODE ((uint32_t)0x00000002)*//*** @brief SD detection on its memory slot*/ #define SD_PRESENT ((uint8_t)0x01) #define SD_NOT_PRESENT ((uint8_t)0x00)/** * @brief Supported SD Memory Cards */ #define SDIO_STD_CAPACITY_SD_CARD_V1_1 ((uint32_t)0x00000000) #define SDIO_STD_CAPACITY_SD_CARD_V2_0 ((uint32_t)0x00000001) #define SDIO_HIGH_CAPACITY_SD_CARD ((uint32_t)0x00000002) #define SDIO_MULTIMEDIA_CARD ((uint32_t)0x00000003) #define SDIO_SECURE_DIGITAL_IO_CARD ((uint32_t)0x00000004) #define SDIO_HIGH_SPEED_MULTIMEDIA_CARD ((uint32_t)0x00000005) #define SDIO_SECURE_DIGITAL_IO_COMBO_CARD ((uint32_t)0x00000006) #define SDIO_HIGH_CAPACITY_MMC_CARD ((uint32_t)0x00000007)/*** @}*/ /** @defgroup STM32_EVAL_SDIO_SD_Exported_Macros* @{*/ /*** @}*/ /** @defgroup STM32_EVAL_SDIO_SD_Exported_Functions* @{*/ void SD_DeInit(void); SD_Error SD_Init(void); SDTransferState SD_GetStatus(void); SDCardState SD_GetState(void); SD_Error SD_PowerON(void); SD_Error SD_PowerOFF(void); SD_Error SD_InitializeCards(void); SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo); SD_Error SD_GetCardStatus(SD_CardStatus *cardstatus); SD_Error SD_EnableWideBusOperation(uint32_t WideMode); SD_Error SD_SelectDeselect(uint32_t addr); SD_Error SD_ReadBlock(uint8_t *readbuff, uint32_t ReadAddr, uint16_t BlockSize); SD_Error SD_ReadMultiBlocks(uint8_t *readbuff, uint32_t ReadAddr, uint16_t BlockSize, uint32_t NumberOfBlocks); SD_Error SD_WriteBlock(uint8_t *writebuff, uint32_t WriteAddr, uint16_t BlockSize); SD_Error SD_WriteMultiBlocks(uint8_t *writebuff, uint32_t WriteAddr, uint16_t BlockSize, uint32_t NumberOfBlocks); SDTransferState SD_GetTransferState(void); SD_Error SD_StopTransfer(void); SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr); SD_Error SD_SendStatus(uint32_t *pcardstatus); SD_Error SD_SendSDStatus(uint32_t *psdstatus); SD_Error SD_ProcessIRQSrc(void); SD_Error SD_WaitReadOperation(void); SD_Error SD_WaitWriteOperation(void); #ifdef __cplusplus } #endif#endif /* __STM32_EVAL_SDIO_SD_H */ /*** @}*//*** @}*//*** @}*//*** @}*/ /*** @}*/ /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ /********************************************************************************* @file stm32_eval_sdio_sd.c* @author MCD Application Team* @version V4.5.0* @date 07-March-2011* @brief This file provides a set of functions needed to manage the SDIO SD * Card memory mounted on STM32xx-EVAL board (refer to stm32_eval.h* to know about the boards supporting this memory). * * * @verbatim** ===================================================================* How to use this driver* ===================================================================* It implements a high level communication layer for read and write * from/to this memory. The needed STM32 hardware resources (SDIO and * GPIO) are defined in stm32xx_eval.h file, and the initialization is * performed in SD_LowLevel_Init() function declared in stm32xx_eval.c * file.* You can easily tailor this driver to any other development board, * by just adapting the defines for hardware resources and * SD_LowLevel_Init() function.* * A - SD Card Initialization and configuration* ============================================ * - To initialize the SD Card, use the SD_Init() function. It * Initializes the SD Card and put it into StandBy State (Ready * for data transfer). This function provide the following operations:* * 1 - Apply the SD Card initialization process at 400KHz and check* the SD Card type (Standard Capacity or High Capacity). You * can change or adapt this frequency by adjusting the * "SDIO_INIT_CLK_DIV" define inside the stm32xx_eval.h file. * The SD Card frequency (SDIO_CK) is computed as follows:* * +---------------------------------------------+ * | SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) |* +---------------------------------------------+ * * In initialization mode and according to the SD Card standard, * make sure that the SDIO_CK frequency don't exceed 400KHz. * * 2 - Get the SD CID and CSD data. All these information are* managed by the SDCardInfo structure. This structure provide* also ready computed SD Card capacity and Block size. ** 3 - Configure the SD Card Data transfer frequency. By Default,* the card transfer frequency is set to 24MHz. You can change* or adapt this frequency by adjusting the "SDIO_TRANSFER_CLK_DIV" * define inside the stm32xx_eval.h file.* The SD Card frequency (SDIO_CK) is computed as follows:* * +---------------------------------------------+ * | SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) |* +---------------------------------------------+ * * In transfer mode and according to the SD Card standard, * make sure that the SDIO_CK frequency don't exceed 25MHz* and 50MHz in High-speed mode switch.* To be able to use a frequency higher than 24MHz, you should* use the SDIO peripheral in bypass mode. Refer to the * corresponding reference manual for more details.* * 4 - Select the corresponding SD Card according to the address* read with the step 2.* * 5 - Configure the SD Card in wide bus mode: 4-bits data. ** B - SD Card Read operation* ========================== * - You can read SD card by using two function: SD_ReadBlock() and* SD_ReadMultiBlocks() functions. These functions support only* 512-byte block length.* - The SD_ReadBlock() function read only one block (512-byte). This* function can transfer the data using DMA controller or using * polling mode. To select between DMA or polling mode refer to * "SD_DMA_MODE" or "SD_POLLING_MODE" inside the stm32_eval_sdio_sd.h* file and uncomment the corresponding line. By default the SD DMA* mode is selected * - The SD_ReadMultiBlocks() function read only mutli blocks (multiple * of 512-byte). * - Any read operation should be followed by two functions to check* if the DMA Controller and SD Card status.* - SD_ReadWaitOperation(): this function insure that the DMA* controller has finished all data transfer.* - SD_GetStatus(): to check that the SD Card has finished the * data transfer and it is ready for data.* * - The DMA transfer is finished by the SDIO Data End interrupt. User* has to call the SD_ProcessIRQ() function inside the SDIO_IRQHandler().* Don't forget to enable the SDIO_IRQn interrupt using the NVIC controller. * * C - SD Card Write operation* =========================== * - You can write SD card by using two function: SD_WriteBlock() and* SD_WriteMultiBlocks() functions. These functions support only* 512-byte block length. * - The SD_WriteBlock() function write only one block (512-byte). This* function can transfer the data using DMA controller or using * polling mode. To select between DMA or polling mode refer to * "SD_DMA_MODE" or "SD_POLLING_MODE" inside the stm32_eval_sdio_sd.h* file and uncomment the corresponding line. By default the SD DMA* mode is selected * - The SD_WriteMultiBlocks() function write only mutli blocks (multiple * of 512-byte). * - Any write operation should be followed by two functions to check* if the DMA Controller and SD Card status.* - SD_ReadWaitOperation(): this function insure that the DMA* controller has finished all data transfer.* - SD_GetStatus(): to check that the SD Card has finished the * data transfer and it is ready for data. * * - The DMA transfer is finished by the SDIO Data End interrupt. User* has to call the SD_ProcessIRQ() function inside the SDIO_IRQHandler().* Don't forget to enable the SDIO_IRQn interrupt using the NVIC controller. * * D - SD card status* ================== * - At any time, you can check the SD Card status and get the SD card* state by using the SD_GetStatus() function. This function checks* first if the SD card is still connected and then get the internal* SD Card transfer state. * - You can also get the SD card SD Status register by using the * SD_SendSDStatus() function. * * E - Programming Model* ===================== * Status = SD_Init(); // Initialization Step as described in section A* * // SDIO Interrupt ENABLE* NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;* NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;* NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;* NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;* NVIC_Init(&NVIC_InitStructure);* * // Write operation as described in Section C* Status = SD_WriteBlock(buffer, address, 512);* Status = SD_WaitWriteOperation();* while(SD_GetStatus() != SD_TRANSFER_OK); * * Status = SD_WriteMultiBlocks(buffer, address, 512, NUMBEROFBLOCKS);* Status = SD_WaitWriteOperation();* while(SD_GetStatus() != SD_TRANSFER_OK); * * // Read operation as described in Section B* Status = SD_ReadBlock(buffer, address, 512);* Status = SD_WaitReadOperation();* while(SD_GetStatus() != SD_TRANSFER_OK);* * Status = SD_ReadMultiBlocks(buffer, address, 512, NUMBEROFBLOCKS);* Status = SD_WaitReadOperation();* while(SD_GetStatus() != SD_TRANSFER_OK); * * * STM32 SDIO Pin assignment* ========================= * +-----------------------------------------------------------+* | Pin assignment |* +-----------------------------+---------------+-------------+* | STM32 SDIO Pins | SD | Pin |* +-----------------------------+---------------+-------------+* | SDIO D2 | D2 | 1 |* | SDIO D3 | D3 | 2 |* | SDIO CMD | CMD | 3 |* | | VCC | 4 (3.3 V)|* | SDIO CLK | CLK | 5 |* | | GND | 6 (0 V) |* | SDIO D0 | D0 | 7 |* | SDIO D1 | D1 | 8 | * +-----------------------------+---------------+-------------+ * * @endverbatim * ******************************************************************************* @attention** THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.** <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "sdio_sd.h"/** @addtogroup Utilities* @{*//** @addtogroup STM32_EVAL* @{*/ /** @addtogroup Common* @{*//** @addtogroup STM32_EVAL_SDIO_SD* @brief This file provides all the SD Card driver firmware functions.* @{*/ /** @defgroup STM32_EVAL_SDIO_SD_Private_Types* @{*/ /*** @}*/ /** @defgroup STM32_EVAL_SDIO_SD_Private_Defines* @{*/ /** * @brief SDIO Static flags, TimeOut, FIFO Address */ #define NULL 0 #define SDIO_STATIC_FLAGS ((uint32_t)0x000005FF) #define SDIO_CMD0TIMEOUT ((uint32_t)0x00010000)/** * @brief Mask for errors Card Status R1 (OCR Register) */ #define SD_OCR_ADDR_OUT_OF_RANGE ((uint32_t)0x80000000) #define SD_OCR_ADDR_MISALIGNED ((uint32_t)0x40000000) #define SD_OCR_BLOCK_LEN_ERR ((uint32_t)0x20000000) #define SD_OCR_ERASE_SEQ_ERR ((uint32_t)0x10000000) #define SD_OCR_BAD_ERASE_PARAM ((uint32_t)0x08000000) #define SD_OCR_WRITE_PROT_VIOLATION ((uint32_t)0x04000000) #define SD_OCR_LOCK_UNLOCK_FAILED ((uint32_t)0x01000000) #define SD_OCR_COM_CRC_FAILED ((uint32_t)0x00800000) #define SD_OCR_ILLEGAL_CMD ((uint32_t)0x00400000) #define SD_OCR_CARD_ECC_FAILED ((uint32_t)0x00200000) #define SD_OCR_CC_ERROR ((uint32_t)0x00100000) #define SD_OCR_GENERAL_UNKNOWN_ERROR ((uint32_t)0x00080000) #define SD_OCR_STREAM_READ_UNDERRUN ((uint32_t)0x00040000) #define SD_OCR_STREAM_WRITE_OVERRUN ((uint32_t)0x00020000) #define SD_OCR_CID_CSD_OVERWRIETE ((uint32_t)0x00010000) #define SD_OCR_WP_ERASE_SKIP ((uint32_t)0x00008000) #define SD_OCR_CARD_ECC_DISABLED ((uint32_t)0x00004000) #define SD_OCR_ERASE_RESET ((uint32_t)0x00002000) #define SD_OCR_AKE_SEQ_ERROR ((uint32_t)0x00000008) #define SD_OCR_ERRORBITS ((uint32_t)0xFDFFE008)/** * @brief Masks for R6 Response */ #define SD_R6_GENERAL_UNKNOWN_ERROR ((uint32_t)0x00002000) #define SD_R6_ILLEGAL_CMD ((uint32_t)0x00004000) #define SD_R6_COM_CRC_FAILED ((uint32_t)0x00008000)#define SD_VOLTAGE_WINDOW_SD ((uint32_t)0x80100000) #define SD_HIGH_CAPACITY ((uint32_t)0x40000000) #define SD_STD_CAPACITY ((uint32_t)0x00000000) #define SD_CHECK_PATTERN ((uint32_t)0x000001AA)#define SD_MAX_VOLT_TRIAL ((uint32_t)0x0000FFFF) #define SD_ALLZERO ((uint32_t)0x00000000)#define SD_WIDE_BUS_SUPPORT ((uint32_t)0x00040000) #define SD_SINGLE_BUS_SUPPORT ((uint32_t)0x00010000) #define SD_CARD_LOCKED ((uint32_t)0x02000000)#define SD_DATATIMEOUT ((uint32_t)0xFFFFFFFF) #define SD_0TO7BITS ((uint32_t)0x000000FF) #define SD_8TO15BITS ((uint32_t)0x0000FF00) #define SD_16TO23BITS ((uint32_t)0x00FF0000) #define SD_24TO31BITS ((uint32_t)0xFF000000) #define SD_MAX_DATA_LENGTH ((uint32_t)0x01FFFFFF)#define SD_HALFFIFO ((uint32_t)0x00000008) #define SD_HALFFIFOBYTES ((uint32_t)0x00000020)/** * @brief Command Class Supported */ #define SD_CCCC_LOCK_UNLOCK ((uint32_t)0x00000080) #define SD_CCCC_WRITE_PROT ((uint32_t)0x00000040) #define SD_CCCC_ERASE ((uint32_t)0x00000020)/** * @brief Following commands are SD Card Specific commands.* SDIO_APP_CMD should be sent before sending these commands. */ #define SDIO_SEND_IF_COND ((uint32_t)0x00000008)/*** @}*/ /** @defgroup STM32_EVAL_SDIO_SD_Private_Macros* @{*/ /*** @}*/ /** @defgroup STM32_EVAL_SDIO_SD_Private_Variables* @{*/ static uint32_t CardType = SDIO_STD_CAPACITY_SD_CARD_V1_1; static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0; static uint8_t SDSTATUS_Tab[16]; __IO uint32_t StopCondition = 0; __IO SD_Error TransferError = SD_OK; __IO uint32_t TransferEnd = 0; SD_CardInfo SDCardInfo;SDIO_InitTypeDef SDIO_InitStructure; SDIO_CmdInitTypeDef SDIO_CmdInitStructure; SDIO_DataInitTypeDef SDIO_DataInitStructure; /*** @} */ /** @defgroup STM32_EVAL_SDIO_SD_Private_Function_Prototypes* @{*/ static SD_Error CmdError(void); static SD_Error CmdResp1Error(uint8_t cmd); static SD_Error CmdResp7Error(void); static SD_Error CmdResp3Error(void); static SD_Error CmdResp2Error(void); static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca); static SD_Error SDEnWideBus(FunctionalState NewState); static SD_Error IsCardProgramming(uint8_t *pstatus); static SD_Error FindSCR(uint16_t rca, uint32_t *pscr); uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);/*** @}*/ /** @defgroup STM32_EVAL_SDIO_SD_Private_Functions* @{*/ static void NVIC_Configuration(void) {NVIC_InitTypeDef NVIC_InitStructure;// SDIO Interrupt ENABLENVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;NVIC_Init(&NVIC_InitStructure); }/*** @brief DeInitializes the SDIO interface.* @param None* @retval None*/ void SD_LowLevel_DeInit(void) {GPIO_InitTypeDef GPIO_InitStructure;/*!< Disable SDIO Clock */SDIO_ClockCmd(DISABLE);/*!< Set Power State to OFF */SDIO_SetPowerState(SDIO_PowerState_OFF);/*!< DeInitializes the SDIO peripheral */SDIO_DeInit();/*!< Disable the SDIO AHB Clock */RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, DISABLE);/*!< Configure PC.08, PC.09, PC.10, PC.11, PC.12 pin: D0, D1, D2, D3, CLK pin */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;GPIO_Init(GPIOC, &GPIO_InitStructure);/*!< Configure PD.02 CMD line */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;GPIO_Init(GPIOD, &GPIO_InitStructure); }/*** @brief Initializes the SD Card and put it into StandBy State (Ready for * data transfer).* @param None* @retval None*/ void SD_LowLevel_Init(void) {GPIO_InitTypeDef GPIO_InitStructure;/*!< GPIOC and GPIOD Periph clock enable */RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);/*!< Configure PC.08, PC.09, PC.10, PC.11, PC.12 pin: D0, D1, D2, D3, CLK pin */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;GPIO_Init(GPIOC, &GPIO_InitStructure);/*!< Configure PD.02 CMD line */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;GPIO_Init(GPIOD, &GPIO_InitStructure);/*!< Enable the SDIO AHB Clock */RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE);/*!< Enable the DMA2 Clock */RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE); }/*** @brief Configures the DMA2 Channel4 for SDIO Tx request.* @param BufferSRC: pointer to the source buffer* @param BufferSize: buffer size* @retval None*/ void SD_LowLevel_DMA_TxConfig(uint32_t *BufferSRC, uint32_t BufferSize) {DMA_InitTypeDef DMA_InitStructure;DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);/*!< DMA2 Channel4 disable */DMA_Cmd(DMA2_Channel4, DISABLE);/*!< DMA2 Channel4 Config */DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS;DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferSRC;DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;DMA_InitStructure.DMA_BufferSize = BufferSize / 4;DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;DMA_InitStructure.DMA_Priority = DMA_Priority_High;DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;DMA_Init(DMA2_Channel4, &DMA_InitStructure);/*!< DMA2 Channel4 enable */DMA_Cmd(DMA2_Channel4, ENABLE); }/*** @brief Configures the DMA2 Channel4 for SDIO Rx request.* @param BufferDST: pointer to the destination buffer* @param BufferSize: buffer size* @retval None*/ void SD_LowLevel_DMA_RxConfig(uint32_t *BufferDST, uint32_t BufferSize) {DMA_InitTypeDef DMA_InitStructure;DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);/*!< DMA2 Channel4 disable */DMA_Cmd(DMA2_Channel4, DISABLE);/*!< DMA2 Channel4 Config */DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS;DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferDST;DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;DMA_InitStructure.DMA_BufferSize = BufferSize / 4;DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;DMA_InitStructure.DMA_Priority = DMA_Priority_High;DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;DMA_Init(DMA2_Channel4, &DMA_InitStructure);/*!< DMA2 Channel4 enable */DMA_Cmd(DMA2_Channel4, ENABLE); }/*** @brief Returns the DMA End Of Transfer Status.* @param None* @retval DMA SDIO Channel Status.*/ uint32_t SD_DMAEndOfTransferStatus(void) {return (uint32_t)DMA_GetFlagStatus(DMA2_FLAG_TC4); }/*** @brief DeInitializes the SDIO interface.* @param None* @retval None*/ void SD_DeInit(void) { SD_LowLevel_DeInit(); }/*** @brief Initializes the SD Card and put it into StandBy State (Ready for data * transfer).* @param None* @retval SD_Error: SD Card Error code.*/ SD_Error SD_Init(void) {SD_Error errorstatus = SD_OK;NVIC_Configuration();/* SDIO Peripheral Low Level Init */SD_LowLevel_Init();SDIO_DeInit();errorstatus = SD_PowerON();if (errorstatus != SD_OK){/*!< CMD Response TimeOut (wait for CMDSENT flag) */return(errorstatus);}errorstatus = SD_InitializeCards();if (errorstatus != SD_OK){/*!< CMD Response TimeOut (wait for CMDSENT flag) */return(errorstatus);}/*!< Configure the SDIO peripheral *//*!< SDIOCLK = HCLK, SDIO_CK = HCLK/(2 + SDIO_TRANSFER_CLK_DIV) *//*!< on STM32F2xx devices, SDIOCLK is fixed to 48MHz */ SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV; SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;SDIO_Init(&SDIO_InitStructure);if (errorstatus == SD_OK){/*----------------- Read CSD/CID MSD registers ------------------*/errorstatus = SD_GetCardInfo(&SDCardInfo);}if (errorstatus == SD_OK){/*----------------- Select Card --------------------------------*/errorstatus = SD_SelectDeselect((uint32_t) (SDCardInfo.RCA << 16));}if (errorstatus == SD_OK){errorstatus = SD_EnableWideBusOperation(SDIO_BusWide_4b);} return(errorstatus); }/*** @brief Gets the cuurent sd card data transfer status.* @param None* @retval SDTransferState: Data Transfer state.* This value can be: * - SD_TRANSFER_OK: No data transfer is acting* - SD_TRANSFER_BUSY: Data transfer is acting*/ SDTransferState SD_GetStatus(void) {SDCardState cardstate = SD_CARD_TRANSFER;cardstate = SD_GetState();if (cardstate == SD_CARD_TRANSFER){return(SD_TRANSFER_OK);}else if(cardstate == SD_CARD_ERROR){return (SD_TRANSFER_ERROR);}else{return(SD_TRANSFER_BUSY);} }/*** @brief Returns the current card's state.* @param None* @retval SDCardState: SD Card Error or SD Card Current State.*/ SDCardState SD_GetState(void) {uint32_t resp1 = 0;if (SD_SendStatus(&resp1) != SD_OK){return SD_CARD_ERROR;}else{return (SDCardState)((resp1 >> 9) & 0x0F);} }/*** @brief Enquires cards about their operating voltage and configures * clock controls.* @param None* @retval SD_Error: SD Card Error code.*/ SD_Error SD_PowerON(void) {SD_Error errorstatus = SD_OK;uint32_t response = 0, count = 0, validvoltage = 0;uint32_t SDType = SD_STD_CAPACITY;/*!< Power ON Sequence -----------------------------------------------------*//*!< Configure the SDIO peripheral *//*!< SDIOCLK = HCLK, SDIO_CK = HCLK/(2 + SDIO_INIT_CLK_DIV) *//*!< on STM32F2xx devices, SDIOCLK is fixed to 48MHz *//*!< SDIO_CK for initialization should not exceed 400 KHz */ SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV;SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;SDIO_Init(&SDIO_InitStructure);/*!< Set Power State to ON */SDIO_SetPowerState(SDIO_PowerState_ON);/*!< Enable SDIO Clock */SDIO_ClockCmd(ENABLE);/*!< CMD0: GO_IDLE_STATE ---------------------------------------------------*//*!< No CMD response required */SDIO_CmdInitStructure.SDIO_Argument = 0x0;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_GO_IDLE_STATE;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdError();if (errorstatus != SD_OK){/*!< CMD Response TimeOut (wait for CMDSENT flag) */return(errorstatus);}/*!< CMD8: SEND_IF_COND ----------------------------------------------------*//*!< Send CMD8 to verify SD card interface operating condition *//*!< Argument: - [31:12]: Reserved (shall be set to '0')- [11:8]: Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)- [7:0]: Check Pattern (recommended 0xAA) *//*!< CMD Response: R7 */SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp7Error();if (errorstatus == SD_OK){CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /*!< SD Card 2.0 */SDType = SD_HIGH_CAPACITY;}else{/*!< CMD55 */SDIO_CmdInitStructure.SDIO_Argument = 0x00;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_CMD);}/*!< CMD55 */SDIO_CmdInitStructure.SDIO_Argument = 0x00;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_CMD);/*!< If errorstatus is Command TimeOut, it is a MMC card *//*!< If errorstatus is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch)or SD card 1.x */if (errorstatus == SD_OK){/*!< SD CARD *//*!< Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL)){/*!< SEND CMD55 APP_CMD with RCA as 0 */SDIO_CmdInitStructure.SDIO_Argument = 0x00;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_CMD);if (errorstatus != SD_OK){return(errorstatus);}SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_OP_COND;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp3Error();if (errorstatus != SD_OK){return(errorstatus);}response = SDIO_GetResponse(SDIO_RESP1);validvoltage = (((response >> 31) == 1) ? 1 : 0);count++;}if (count >= SD_MAX_VOLT_TRIAL){errorstatus = SD_INVALID_VOLTRANGE;return(errorstatus);}if (response &= SD_HIGH_CAPACITY){CardType = SDIO_HIGH_CAPACITY_SD_CARD;}}/*!< else MMC Card */return(errorstatus); }/*** @brief Turns the SDIO output signals off.* @param None* @retval SD_Error: SD Card Error code.*/ SD_Error SD_PowerOFF(void) {SD_Error errorstatus = SD_OK;/*!< Set Power State to OFF */SDIO_SetPowerState(SDIO_PowerState_OFF);return(errorstatus); }/*** @brief Intialises all cards or single card as the case may be Card(s) come * into standby state.* @param None* @retval SD_Error: SD Card Error code.*/ SD_Error SD_InitializeCards(void) {SD_Error errorstatus = SD_OK;uint16_t rca = 0x01;if (SDIO_GetPowerState() == SDIO_PowerState_OFF){errorstatus = SD_REQUEST_NOT_APPLICABLE;return(errorstatus);}if (SDIO_SECURE_DIGITAL_IO_CARD != CardType){/*!< Send CMD2 ALL_SEND_CID */SDIO_CmdInitStructure.SDIO_Argument = 0x0;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ALL_SEND_CID;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp2Error();if (SD_OK != errorstatus){return(errorstatus);}CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);}if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)|| (SDIO_HIGH_CAPACITY_SD_CARD == CardType)){/*!< Send CMD3 SET_REL_ADDR with argument 0 *//*!< SD Card publishes its RCA. */SDIO_CmdInitStructure.SDIO_Argument = 0x00;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp6Error(SD_CMD_SET_REL_ADDR, &rca);if (SD_OK != errorstatus){return(errorstatus);}}if (SDIO_SECURE_DIGITAL_IO_CARD != CardType){RCA = rca;/*!< Send CMD9 SEND_CSD with argument as card's RCA */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_CSD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp2Error();if (SD_OK != errorstatus){return(errorstatus);}CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);}errorstatus = SD_OK; /*!< All cards get intialized */return(errorstatus); }/*** @brief Returns information about specific card.* @param cardinfo: pointer to a SD_CardInfo structure that contains all SD card * information.* @retval SD_Error: SD Card Error code.*/ SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo) {SD_Error errorstatus = SD_OK;uint8_t tmp = 0;cardinfo->CardType = (uint8_t)CardType;cardinfo->RCA = (uint16_t)RCA;/*!< Byte 0 */tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;cardinfo->SD_csd.Reserved1 = tmp & 0x03;/*!< Byte 1 */tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);cardinfo->SD_csd.TAAC = tmp;/*!< Byte 2 */tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);cardinfo->SD_csd.NSAC = tmp;/*!< Byte 3 */tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);cardinfo->SD_csd.MaxBusClkFrec = tmp;/*!< Byte 4 */tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);cardinfo->SD_csd.CardComdClasses = tmp << 4;/*!< Byte 5 */tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;/*!< Byte 6 */tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;cardinfo->SD_csd.Reserved2 = 0; /*!< Reserved */if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0)){cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;/*!< Byte 7 */tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);cardinfo->SD_csd.DeviceSize |= (tmp) << 2;/*!< Byte 8 */tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);/*!< Byte 9 */tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;/*!< Byte 10 */tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);cardinfo->CardCapacity *= cardinfo->CardBlockSize;}else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD){/*!< Byte 7 */tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;/*!< Byte 8 */tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);cardinfo->SD_csd.DeviceSize |= (tmp << 8);/*!< Byte 9 */tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);cardinfo->SD_csd.DeviceSize |= (tmp);/*!< Byte 10 */tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;cardinfo->CardBlockSize = 512; }cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;/*!< Byte 11 */tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);/*!< Byte 12 */tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;/*!< Byte 13 */tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;cardinfo->SD_csd.Reserved3 = 0;cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);/*!< Byte 14 */tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;cardinfo->SD_csd.ECC = (tmp & 0x03);/*!< Byte 15 */tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;cardinfo->SD_csd.Reserved4 = 1;/*!< Byte 0 */tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);cardinfo->SD_cid.ManufacturerID = tmp;/*!< Byte 1 */tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);cardinfo->SD_cid.OEM_AppliID = tmp << 8;/*!< Byte 2 */tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);cardinfo->SD_cid.OEM_AppliID |= tmp;/*!< Byte 3 */tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);cardinfo->SD_cid.ProdName1 = tmp << 24;/*!< Byte 4 */tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);cardinfo->SD_cid.ProdName1 |= tmp << 16;/*!< Byte 5 */tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);cardinfo->SD_cid.ProdName1 |= tmp << 8;/*!< Byte 6 */tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);cardinfo->SD_cid.ProdName1 |= tmp;/*!< Byte 7 */tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);cardinfo->SD_cid.ProdName2 = tmp;/*!< Byte 8 */tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);cardinfo->SD_cid.ProdRev = tmp;/*!< Byte 9 */tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);cardinfo->SD_cid.ProdSN = tmp << 24;/*!< Byte 10 */tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);cardinfo->SD_cid.ProdSN |= tmp << 16;/*!< Byte 11 */tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);cardinfo->SD_cid.ProdSN |= tmp << 8;/*!< Byte 12 */tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);cardinfo->SD_cid.ProdSN |= tmp;/*!< Byte 13 */tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;/*!< Byte 14 */tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);cardinfo->SD_cid.ManufactDate |= tmp;/*!< Byte 15 */tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;cardinfo->SD_cid.Reserved2 = 1;return(errorstatus); }/*** @brief Enables wide bus opeartion for the requeseted card if supported by * card.* @param WideMode: Specifies the SD card wide bus mode. * This parameter can be one of the following values:* @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)* @arg SDIO_BusWide_4b: 4-bit data transfer* @arg SDIO_BusWide_1b: 1-bit data transfer* @retval SD_Error: SD Card Error code.*/ SD_Error SD_GetCardStatus(SD_CardStatus *cardstatus) {SD_Error errorstatus = SD_OK;uint8_t tmp = 0;errorstatus = SD_SendSDStatus((uint32_t *)SDSTATUS_Tab);if (errorstatus != SD_OK){return(errorstatus);}/*!< Byte 0 */tmp = (uint8_t)((SDSTATUS_Tab[0] & 0xC0) >> 6);cardstatus->DAT_BUS_WIDTH = tmp;/*!< Byte 0 */tmp = (uint8_t)((SDSTATUS_Tab[0] & 0x20) >> 5);cardstatus->SECURED_MODE = tmp;/*!< Byte 2 */tmp = (uint8_t)((SDSTATUS_Tab[2] & 0xFF));cardstatus->SD_CARD_TYPE = tmp << 8;/*!< Byte 3 */tmp = (uint8_t)((SDSTATUS_Tab[3] & 0xFF));cardstatus->SD_CARD_TYPE |= tmp;/*!< Byte 4 */tmp = (uint8_t)(SDSTATUS_Tab[4] & 0xFF);cardstatus->SIZE_OF_PROTECTED_AREA = tmp << 24;/*!< Byte 5 */tmp = (uint8_t)(SDSTATUS_Tab[5] & 0xFF);cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 16;/*!< Byte 6 */tmp = (uint8_t)(SDSTATUS_Tab[6] & 0xFF);cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 8;/*!< Byte 7 */tmp = (uint8_t)(SDSTATUS_Tab[7] & 0xFF);cardstatus->SIZE_OF_PROTECTED_AREA |= tmp;/*!< Byte 8 */tmp = (uint8_t)((SDSTATUS_Tab[8] & 0xFF));cardstatus->SPEED_CLASS = tmp;/*!< Byte 9 */tmp = (uint8_t)((SDSTATUS_Tab[9] & 0xFF));cardstatus->PERFORMANCE_MOVE = tmp;/*!< Byte 10 */tmp = (uint8_t)((SDSTATUS_Tab[10] & 0xF0) >> 4);cardstatus->AU_SIZE = tmp;/*!< Byte 11 */tmp = (uint8_t)(SDSTATUS_Tab[11] & 0xFF);cardstatus->ERASE_SIZE = tmp << 8;/*!< Byte 12 */tmp = (uint8_t)(SDSTATUS_Tab[12] & 0xFF);cardstatus->ERASE_SIZE |= tmp;/*!< Byte 13 */tmp = (uint8_t)((SDSTATUS_Tab[13] & 0xFC) >> 2);cardstatus->ERASE_TIMEOUT = tmp;/*!< Byte 13 */tmp = (uint8_t)((SDSTATUS_Tab[13] & 0x3));cardstatus->ERASE_OFFSET = tmp;return(errorstatus); }/*** @brief Enables wide bus opeartion for the requeseted card if supported by * card.* @param WideMode: Specifies the SD card wide bus mode. * This parameter can be one of the following values:* @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)* @arg SDIO_BusWide_4b: 4-bit data transfer* @arg SDIO_BusWide_1b: 1-bit data transfer* @retval SD_Error: SD Card Error code.*/ SD_Error SD_EnableWideBusOperation(uint32_t WideMode) {SD_Error errorstatus = SD_OK;/*!< MMC Card doesn't support this feature */if (SDIO_MULTIMEDIA_CARD == CardType){errorstatus = SD_UNSUPPORTED_FEATURE;return(errorstatus);}else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType)){if (SDIO_BusWide_8b == WideMode){errorstatus = SD_UNSUPPORTED_FEATURE;return(errorstatus);}else if (SDIO_BusWide_4b == WideMode){errorstatus = SDEnWideBus(ENABLE);if (SD_OK == errorstatus){/*!< Configure the SDIO peripheral */SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV; SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b;SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;SDIO_Init(&SDIO_InitStructure);}}else{errorstatus = SDEnWideBus(DISABLE);if (SD_OK == errorstatus){/*!< Configure the SDIO peripheral */SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV; SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;SDIO_Init(&SDIO_InitStructure);}}}return(errorstatus); }/*** @brief Selects od Deselects the corresponding card.* @param addr: Address of the Card to be selected.* @retval SD_Error: SD Card Error code.*/ SD_Error SD_SelectDeselect(uint32_t addr) {SD_Error errorstatus = SD_OK;/*!< Send CMD7 SDIO_SEL_DESEL_CARD */SDIO_CmdInitStructure.SDIO_Argument = addr;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEL_DESEL_CARD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SEL_DESEL_CARD);return(errorstatus); }/*** @brief Allows to read one block from a specified address in a card. The Data* transfer can be managed by DMA mode or Polling mode. * @note This operation should be followed by two functions to check if the * DMA Controller and SD Card status.* - SD_ReadWaitOperation(): this function insure that the DMA* controller has finished all data transfer.* - SD_GetStatus(): to check that the SD Card has finished the * data transfer and it is ready for data. * @param readbuff: pointer to the buffer that will contain the received data* @param ReadAddr: Address from where data are to be read. * @param BlockSize: the SD card Data block size. The Block size should be 512.* @retval SD_Error: SD Card Error code.*/ SD_Error SD_ReadBlock(uint8_t *readbuff, uint32_t ReadAddr, uint16_t BlockSize) {SD_Error errorstatus = SD_OK; #if defined (SD_POLLING_MODE) uint32_t count = 0, *tempbuff = (uint32_t *)readbuff; #endifTransferError = SD_OK;TransferEnd = 0;StopCondition = 0;SDIO->DCTRL = 0x0;if (CardType == SDIO_HIGH_CAPACITY_SD_CARD){BlockSize = 512;ReadAddr /= 512;}/*******************add，沒有這一段容易卡死在DMA檢測中*************************************//* Set Block Size for Card，cmd16,* 若是sdsc卡，可以用來設置塊大小，* 若是sdhc卡，塊大小為512字節，不受cmd16影響 */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);if (SD_OK != errorstatus){return(errorstatus);}/*********************************************************************************/SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;SDIO_DataInitStructure.SDIO_DataLength = BlockSize;SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;SDIO_DataConfig(&SDIO_DataInitStructure);/*!< Send CMD17 READ_SINGLE_BLOCK */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_SINGLE_BLOCK;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_READ_SINGLE_BLOCK);if (errorstatus != SD_OK){return(errorstatus);}#if defined (SD_POLLING_MODE) /*!< In case of single block transfer, no need of stop transfer at all.*//*!< Polling mode */while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR))){if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET){for (count = 0; count < 8; count++){*(tempbuff + count) = SDIO_ReadData();}tempbuff += 8;}}if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET){SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);errorstatus = SD_DATA_TIMEOUT;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET){SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);errorstatus = SD_DATA_CRC_FAIL;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET){SDIO_ClearFlag(SDIO_FLAG_RXOVERR);errorstatus = SD_RX_OVERRUN;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET){SDIO_ClearFlag(SDIO_FLAG_STBITERR);errorstatus = SD_START_BIT_ERR;return(errorstatus);}while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET){*tempbuff = SDIO_ReadData();tempbuff++;}/*!< Clear all the static flags */SDIO_ClearFlag(SDIO_STATIC_FLAGS);#elif defined (SD_DMA_MODE)SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);SDIO_DMACmd(ENABLE);SD_LowLevel_DMA_RxConfig((uint32_t *)readbuff, BlockSize); #endifreturn(errorstatus); }/*** @brief Allows to read blocks from a specified address in a card. The Data* transfer can be managed by DMA mode or Polling mode. * @note This operation should be followed by two functions to check if the * DMA Controller and SD Card status.* - SD_ReadWaitOperation(): this function insure that the DMA* controller has finished all data transfer.* - SD_GetStatus(): to check that the SD Card has finished the * data transfer and it is ready for data. * @param readbuff: pointer to the buffer that will contain the received data.* @param ReadAddr: Address from where data are to be read.* @param BlockSize: the SD card Data block size. The Block size should be 512.* @param NumberOfBlocks: number of blocks to be read.* @retval SD_Error: SD Card Error code.*/ SD_Error SD_ReadMultiBlocks(uint8_t *readbuff, uint32_t ReadAddr, uint16_t BlockSize, uint32_t NumberOfBlocks) {SD_Error errorstatus = SD_OK;TransferError = SD_OK;TransferEnd = 0;StopCondition = 1;SDIO->DCTRL = 0x0;if (CardType == SDIO_HIGH_CAPACITY_SD_CARD){BlockSize = 512;ReadAddr /= 512;}/*!< Set Block Size for Card */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);if (SD_OK != errorstatus){return(errorstatus);}SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;SDIO_DataConfig(&SDIO_DataInitStructure);/*!< Send CMD18 READ_MULT_BLOCK with argument data address */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_READ_MULT_BLOCK);if (errorstatus != SD_OK){return(errorstatus);}SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);SDIO_DMACmd(ENABLE);SD_LowLevel_DMA_RxConfig((uint32_t *)readbuff, (NumberOfBlocks * BlockSize));return(errorstatus); }/*** @brief This function waits until the SDIO DMA data transfer is finished. * This function should be called after SDIO_ReadMultiBlocks() function* to insure that all data sent by the card are already transferred by * the DMA controller. * @param None.* @retval SD_Error: SD Card Error code.*/ SD_Error SD_WaitReadOperation(void) {SD_Error errorstatus = SD_OK;while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK)){}if (TransferError != SD_OK){return(TransferError);}return(errorstatus); }/*** @brief Allows to write one block starting from a specified address in a card.* The Data transfer can be managed by DMA mode or Polling mode.* @note This operation should be followed by two functions to check if the * DMA Controller and SD Card status.* - SD_ReadWaitOperation(): this function insure that the DMA* controller has finished all data transfer.* - SD_GetStatus(): to check that the SD Card has finished the * data transfer and it is ready for data. * @param writebuff: pointer to the buffer that contain the data to be transferred.* @param WriteAddr: Address from where data are to be read. * @param BlockSize: the SD card Data block size. The Block size should be 512.* @retval SD_Error: SD Card Error code.*/ SD_Error SD_WriteBlock(uint8_t *writebuff, uint32_t WriteAddr, uint16_t BlockSize) {SD_Error errorstatus = SD_OK;#if defined (SD_POLLING_MODE)uint32_t bytestransferred = 0, count = 0, restwords = 0;uint32_t *tempbuff = (uint32_t *)writebuff; #endifTransferError = SD_OK;TransferEnd = 0;StopCondition = 0;SDIO->DCTRL = 0x0;if (CardType == SDIO_HIGH_CAPACITY_SD_CARD){BlockSize = 512;WriteAddr /= 512;}/*-------------- add , 沒有這一段容易卡死在DMA檢測中 -------------------*//* Set Block Size for Card，cmd16,* 若是sdsc卡，可以用來設置塊大小，* 若是sdhc卡，塊大小為512字節，不受cmd16影響 */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);if (SD_OK != errorstatus){return(errorstatus);}/*********************************************************************************//*!< Send CMD24 WRITE_SINGLE_BLOCK */SDIO_CmdInitStructure.SDIO_Argument = WriteAddr;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);if (errorstatus != SD_OK){return(errorstatus);}SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;SDIO_DataInitStructure.SDIO_DataLength = BlockSize;SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;SDIO_DataConfig(&SDIO_DataInitStructure);/*!< In case of single data block transfer no need of stop command at all */ #if defined (SD_POLLING_MODE) while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR))){if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET){if ((512 - bytestransferred) < 32){restwords = ((512 - bytestransferred) % 4 == 0) ? ((512 - bytestransferred) / 4) : (( 512 - bytestransferred) / 4 + 1);for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4){SDIO_WriteData(*tempbuff);}}else{for (count = 0; count < 8; count++){SDIO_WriteData(*(tempbuff + count));}tempbuff += 8;bytestransferred += 32;}}}if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET){SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);errorstatus = SD_DATA_TIMEOUT;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET){SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);errorstatus = SD_DATA_CRC_FAIL;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET){SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);errorstatus = SD_TX_UNDERRUN;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET){SDIO_ClearFlag(SDIO_FLAG_STBITERR);errorstatus = SD_START_BIT_ERR;return(errorstatus);} #elif defined (SD_DMA_MODE)SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, BlockSize);SDIO_DMACmd(ENABLE); #endifreturn(errorstatus); }/*** @brief Allows to write blocks starting from a specified address in a card.* The Data transfer can be managed by DMA mode only. * @note This operation should be followed by two functions to check if the * DMA Controller and SD Card status.* - SD_ReadWaitOperation(): this function insure that the DMA* controller has finished all data transfer.* - SD_GetStatus(): to check that the SD Card has finished the * data transfer and it is ready for data. * @param WriteAddr: Address from where data are to be read.* @param writebuff: pointer to the buffer that contain the data to be transferred.* @param BlockSize: the SD card Data block size. The Block size should be 512.* @param NumberOfBlocks: number of blocks to be written.* @retval SD_Error: SD Card Error code.*/ SD_Error SD_WriteMultiBlocks(uint8_t *writebuff, uint32_t WriteAddr, uint16_t BlockSize, uint32_t NumberOfBlocks) {SD_Error errorstatus = SD_OK;__IO uint32_t count = 0;TransferError = SD_OK;TransferEnd = 0;StopCondition = 1;SDIO->DCTRL = 0x0;if (CardType == SDIO_HIGH_CAPACITY_SD_CARD){BlockSize = 512;WriteAddr /= 512;}/*******************add，沒有這一段容易卡死在DMA檢測中*************************************//*!< Set Block Size for Card，cmd16,若是sdsc卡，可以用來設置塊大小，若是sdhc卡，塊大小為512字節，不受cmd16影響 */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);if (SD_OK != errorstatus){return(errorstatus);}/*********************************************************************************//*!< To improve performance */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_CMD);if (errorstatus != SD_OK){return(errorstatus);}/*!< To improve performance */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);if (errorstatus != SD_OK){return(errorstatus);}/*!< Send CMD25 WRITE_MULT_BLOCK with argument data address */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)WriteAddr;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_MULT_BLOCK;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK);if (SD_OK != errorstatus){return(errorstatus);}SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;SDIO_DataConfig(&SDIO_DataInitStructure);SDIO_ITConfig(SDIO_IT_DATAEND, ENABLE);SDIO_DMACmd(ENABLE); SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, (NumberOfBlocks * BlockSize));return(errorstatus); }/*** @brief This function waits until the SDIO DMA data transfer is finished. * This function should be called after SDIO_WriteBlock() and* SDIO_WriteMultiBlocks() function to insure that all data sent by the * card are already transferred by the DMA controller. * @param None.* @retval SD_Error: SD Card Error code.*/ SD_Error SD_WaitWriteOperation(void) {SD_Error errorstatus = SD_OK;while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK)){}if (TransferError != SD_OK){return(TransferError);}/*!< Clear all the static flags */SDIO_ClearFlag(SDIO_STATIC_FLAGS);return(errorstatus); }/*** @brief Gets the cuurent data transfer state.* @param None* @retval SDTransferState: Data Transfer state.* This value can be: * - SD_TRANSFER_OK: No data transfer is acting* - SD_TRANSFER_BUSY: Data transfer is acting*/ SDTransferState SD_GetTransferState(void) {if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT)){return(SD_TRANSFER_BUSY);}else{return(SD_TRANSFER_OK);} }/*** @brief Aborts an ongoing data transfer.* @param None* @retval SD_Error: SD Card Error code.*/ SD_Error SD_StopTransfer(void) {SD_Error errorstatus = SD_OK;/*!< Send CMD12 STOP_TRANSMISSION */SDIO->ARG = 0x0;SDIO->CMD = 0x44C;errorstatus = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);return(errorstatus); }/*** @brief Allows to erase memory area specified for the given card.* @param startaddr: the start address.* @param endaddr: the end address.* @retval SD_Error: SD Card Error code.*/ SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr) {SD_Error errorstatus = SD_OK;uint32_t delay = 0;__IO uint32_t maxdelay = 0;uint8_t cardstate = 0;/*!< Check if the card coomnd class supports erase command */if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0){errorstatus = SD_REQUEST_NOT_APPLICABLE;return(errorstatus);}maxdelay = 120000 / ((SDIO->CLKCR & 0xFF) + 2);if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED){errorstatus = SD_LOCK_UNLOCK_FAILED;return(errorstatus);}if (CardType == SDIO_HIGH_CAPACITY_SD_CARD){startaddr /= 512;endaddr /= 512;}/*!< According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType)){/*!< Send CMD32 SD_ERASE_GRP_START with argument as addr */SDIO_CmdInitStructure.SDIO_Argument = startaddr;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_START;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_START);if (errorstatus != SD_OK){return(errorstatus);}/*!< Send CMD33 SD_ERASE_GRP_END with argument as addr */SDIO_CmdInitStructure.SDIO_Argument = endaddr;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_END;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_END);if (errorstatus != SD_OK){return(errorstatus);}}/*!< Send CMD38 ERASE */SDIO_CmdInitStructure.SDIO_Argument = 0;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ERASE;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_ERASE);if (errorstatus != SD_OK){return(errorstatus);}for (delay = 0; delay < maxdelay; delay++){}/*!< Wait till the card is in programming state */errorstatus = IsCardProgramming(&cardstate);while ((errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate))){errorstatus = IsCardProgramming(&cardstate);}return(errorstatus); }/*** @brief Returns the current card's status.* @param pcardstatus: pointer to the buffer that will contain the SD card * status (Card Status register).* @retval SD_Error: SD Card Error code.*/ SD_Error SD_SendStatus(uint32_t *pcardstatus) {SD_Error errorstatus = SD_OK;SDIO->ARG = (uint32_t) RCA << 16;SDIO->CMD = 0x44D;errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS);if (errorstatus != SD_OK){return(errorstatus);}*pcardstatus = SDIO->RESP1;return(errorstatus); }/*** @brief Returns the current SD card's status.* @param psdstatus: pointer to the buffer that will contain the SD card status * (SD Status register).* @retval SD_Error: SD Card Error code.*/ SD_Error SD_SendSDStatus(uint32_t *psdstatus) {SD_Error errorstatus = SD_OK;uint32_t count = 0;if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED){errorstatus = SD_LOCK_UNLOCK_FAILED;return(errorstatus);}/*!< Set block size for card if it is not equal to current block size for card. */SDIO_CmdInitStructure.SDIO_Argument = 64;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);if (errorstatus != SD_OK){return(errorstatus);}/*!< CMD55 */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_CMD);if (errorstatus != SD_OK){return(errorstatus);}SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;SDIO_DataInitStructure.SDIO_DataLength = 64;SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;SDIO_DataConfig(&SDIO_DataInitStructure);/*!< Send ACMD13 SD_APP_STAUS with argument as card's RCA.*/SDIO_CmdInitStructure.SDIO_Argument = 0;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_STAUS;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SD_APP_STAUS);if (errorstatus != SD_OK){return(errorstatus);}while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR))){if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET){for (count = 0; count < 8; count++){*(psdstatus + count) = SDIO_ReadData();}psdstatus += 8;}}if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET){SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);errorstatus = SD_DATA_TIMEOUT;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET){SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);errorstatus = SD_DATA_CRC_FAIL;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET){SDIO_ClearFlag(SDIO_FLAG_RXOVERR);errorstatus = SD_RX_OVERRUN;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET){SDIO_ClearFlag(SDIO_FLAG_STBITERR);errorstatus = SD_START_BIT_ERR;return(errorstatus);}while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET){*psdstatus = SDIO_ReadData();psdstatus++;}/*!< Clear all the static status flags*/SDIO_ClearFlag(SDIO_STATIC_FLAGS);return(errorstatus); }/*** @brief Allows to process all the interrupts that are high.* @param None* @retval SD_Error: SD Card Error code.*/ SD_Error SD_ProcessIRQSrc(void) {if (StopCondition == 1){SDIO->ARG = 0x0;SDIO->CMD = 0x44C;TransferError = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);}else{TransferError = SD_OK;}SDIO_ClearITPendingBit(SDIO_IT_DATAEND);SDIO_ITConfig(SDIO_IT_DATAEND, DISABLE);TransferEnd = 1;return(TransferError); }/*** @brief Checks for error conditions for CMD0.* @param None* @retval SD_Error: SD Card Error code.*/ static SD_Error CmdError(void) {SD_Error errorstatus = SD_OK;uint32_t timeout;timeout = SDIO_CMD0TIMEOUT; /*!< 10000 */while ((timeout > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET)){timeout--;}if (timeout == 0){errorstatus = SD_CMD_RSP_TIMEOUT;return(errorstatus);}/*!< Clear all the static flags */SDIO_ClearFlag(SDIO_STATIC_FLAGS);return(errorstatus); }/*** @brief Checks for error conditions for R7 response.* @param None* @retval SD_Error: SD Card Error code.*/ static SD_Error CmdResp7Error(void) {SD_Error errorstatus = SD_OK;uint32_t status;uint32_t timeout = SDIO_CMD0TIMEOUT;status = SDIO->STA;while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (timeout > 0)){timeout--;status = SDIO->STA;}if ((timeout == 0) || (status & SDIO_FLAG_CTIMEOUT)){/*!< Card is not V2.0 complient or card does not support the set voltage range */errorstatus = SD_CMD_RSP_TIMEOUT;SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);return(errorstatus);}if (status & SDIO_FLAG_CMDREND){/*!< Card is SD V2.0 compliant */errorstatus = SD_OK;SDIO_ClearFlag(SDIO_FLAG_CMDREND);return(errorstatus);}return(errorstatus); }/*** @brief Checks for error conditions for R1 response.* @param cmd: The sent command index.* @retval SD_Error: SD Card Error code.*/ static SD_Error CmdResp1Error(uint8_t cmd) {while (!(SDIO->STA & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT))){}SDIO->ICR = SDIO_STATIC_FLAGS;return (SD_Error)(SDIO->RESP1 & SD_OCR_ERRORBITS); }/*** @brief Checks for error conditions for R3 (OCR) response.* @param None* @retval SD_Error: SD Card Error code.*/ static SD_Error CmdResp3Error(void) {SD_Error errorstatus = SD_OK;uint32_t status;status = SDIO->STA;while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT))){status = SDIO->STA;}if (status & SDIO_FLAG_CTIMEOUT){errorstatus = SD_CMD_RSP_TIMEOUT;SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);return(errorstatus);}/*!< Clear all the static flags */SDIO_ClearFlag(SDIO_STATIC_FLAGS);return(errorstatus); }/*** @brief Checks for error conditions for R2 (CID or CSD) response.* @param None* @retval SD_Error: SD Card Error code.*/ static SD_Error CmdResp2Error(void) {SD_Error errorstatus = SD_OK;uint32_t status;status = SDIO->STA;while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND))){status = SDIO->STA;}if (status & SDIO_FLAG_CTIMEOUT){errorstatus = SD_CMD_RSP_TIMEOUT;SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);return(errorstatus);}else if (status & SDIO_FLAG_CCRCFAIL){errorstatus = SD_CMD_CRC_FAIL;SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);return(errorstatus);}/*!< Clear all the static flags */SDIO_ClearFlag(SDIO_STATIC_FLAGS);return(errorstatus); }/*** @brief Checks for error conditions for R6 (RCA) response.* @param cmd: The sent command index.* @param prca: pointer to the variable that will contain the SD card relative * address RCA. * @retval SD_Error: SD Card Error code.*/ static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca) {SD_Error errorstatus = SD_OK;uint32_t status;uint32_t response_r1;status = SDIO->STA;while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND))){status = SDIO->STA;}if (status & SDIO_FLAG_CTIMEOUT){errorstatus = SD_CMD_RSP_TIMEOUT;SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);return(errorstatus);}else if (status & SDIO_FLAG_CCRCFAIL){errorstatus = SD_CMD_CRC_FAIL;SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);return(errorstatus);}/*!< Check response received is of desired command */if (SDIO_GetCommandResponse() != cmd){errorstatus = SD_ILLEGAL_CMD;return(errorstatus);}/*!< Clear all the static flags */SDIO_ClearFlag(SDIO_STATIC_FLAGS);/*!< We have received response, retrieve it. */response_r1 = SDIO_GetResponse(SDIO_RESP1);if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED))){*prca = (uint16_t) (response_r1 >> 16);return(errorstatus);}if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR){return(SD_GENERAL_UNKNOWN_ERROR);}if (response_r1 & SD_R6_ILLEGAL_CMD){return(SD_ILLEGAL_CMD);}if (response_r1 & SD_R6_COM_CRC_FAILED){return(SD_COM_CRC_FAILED);}return(errorstatus); }/*** @brief Enables or disables the SDIO wide bus mode.* @param NewState: new state of the SDIO wide bus mode.* This parameter can be: ENABLE or DISABLE.* @retval SD_Error: SD Card Error code.*/ static SD_Error SDEnWideBus(FunctionalState NewState) {SD_Error errorstatus = SD_OK;uint32_t scr[2] = {0, 0};if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED){errorstatus = SD_LOCK_UNLOCK_FAILED;return(errorstatus);}/*!< Get SCR Register */errorstatus = FindSCR(RCA, scr);if (errorstatus != SD_OK){return(errorstatus);}/*!< If wide bus operation to be enabled */if (NewState == ENABLE){/*!< If requested card supports wide bus operation */if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO){/*!< Send CMD55 APP_CMD with argument as card's RCA.*/SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_CMD);if (errorstatus != SD_OK){return(errorstatus);}/*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */SDIO_CmdInitStructure.SDIO_Argument = 0x2;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);if (errorstatus != SD_OK){return(errorstatus);}return(errorstatus);}else{errorstatus = SD_REQUEST_NOT_APPLICABLE;return(errorstatus);}} /*!< If wide bus operation to be disabled */else{/*!< If requested card supports 1 bit mode operation */if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO){/*!< Send CMD55 APP_CMD with argument as card's RCA.*/SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_CMD);if (errorstatus != SD_OK){return(errorstatus);}/*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */SDIO_CmdInitStructure.SDIO_Argument = 0x00;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);if (errorstatus != SD_OK){return(errorstatus);}return(errorstatus);}else{errorstatus = SD_REQUEST_NOT_APPLICABLE;return(errorstatus);}} }/*** @brief Checks if the SD card is in programming state.* @param pstatus: pointer to the variable that will contain the SD card state.* @retval SD_Error: SD Card Error code.*/ static SD_Error IsCardProgramming(uint8_t *pstatus) {SD_Error errorstatus = SD_OK;__IO uint32_t respR1 = 0, status = 0;SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);status = SDIO->STA;while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT))){status = SDIO->STA;}if (status & SDIO_FLAG_CTIMEOUT){errorstatus = SD_CMD_RSP_TIMEOUT;SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);return(errorstatus);}else if (status & SDIO_FLAG_CCRCFAIL){errorstatus = SD_CMD_CRC_FAIL;SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);return(errorstatus);}status = (uint32_t)SDIO_GetCommandResponse();/*!< Check response received is of desired command */if (status != SD_CMD_SEND_STATUS){errorstatus = SD_ILLEGAL_CMD;return(errorstatus);}/*!< Clear all the static flags */SDIO_ClearFlag(SDIO_STATIC_FLAGS);/*!< We have received response, retrieve it for analysis */respR1 = SDIO_GetResponse(SDIO_RESP1);/*!< Find out card status */*pstatus = (uint8_t) ((respR1 >> 9) & 0x0000000F);if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO){return(errorstatus);}if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE){return(SD_ADDR_OUT_OF_RANGE);}if (respR1 & SD_OCR_ADDR_MISALIGNED){return(SD_ADDR_MISALIGNED);}if (respR1 & SD_OCR_BLOCK_LEN_ERR){return(SD_BLOCK_LEN_ERR);}if (respR1 & SD_OCR_ERASE_SEQ_ERR){return(SD_ERASE_SEQ_ERR);}if (respR1 & SD_OCR_BAD_ERASE_PARAM){return(SD_BAD_ERASE_PARAM);}if (respR1 & SD_OCR_WRITE_PROT_VIOLATION){return(SD_WRITE_PROT_VIOLATION);}if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED){return(SD_LOCK_UNLOCK_FAILED);}if (respR1 & SD_OCR_COM_CRC_FAILED){return(SD_COM_CRC_FAILED);}if (respR1 & SD_OCR_ILLEGAL_CMD){return(SD_ILLEGAL_CMD);}if (respR1 & SD_OCR_CARD_ECC_FAILED){return(SD_CARD_ECC_FAILED);}if (respR1 & SD_OCR_CC_ERROR){return(SD_CC_ERROR);}if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR){return(SD_GENERAL_UNKNOWN_ERROR);}if (respR1 & SD_OCR_STREAM_READ_UNDERRUN){return(SD_STREAM_READ_UNDERRUN);}if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN){return(SD_STREAM_WRITE_OVERRUN);}if (respR1 & SD_OCR_CID_CSD_OVERWRIETE){return(SD_CID_CSD_OVERWRITE);}if (respR1 & SD_OCR_WP_ERASE_SKIP){return(SD_WP_ERASE_SKIP);}if (respR1 & SD_OCR_CARD_ECC_DISABLED){return(SD_CARD_ECC_DISABLED);}if (respR1 & SD_OCR_ERASE_RESET){return(SD_ERASE_RESET);}if (respR1 & SD_OCR_AKE_SEQ_ERROR){return(SD_AKE_SEQ_ERROR);}return(errorstatus); }/*** @brief Find the SD card SCR register value.* @param rca: selected card address.* @param pscr: pointer to the buffer that will contain the SCR value.* @retval SD_Error: SD Card Error code.*/ static SD_Error FindSCR(uint16_t rca, uint32_t *pscr) {uint32_t index = 0;SD_Error errorstatus = SD_OK;uint32_t tempscr[2] = {0, 0};/*!< Set Block Size To 8 Bytes *//*!< Send CMD55 APP_CMD with argument as card's RCA */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);if (errorstatus != SD_OK){return(errorstatus);}/*!< Send CMD55 APP_CMD with argument as card's RCA */SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_APP_CMD);if (errorstatus != SD_OK){return(errorstatus);}SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;SDIO_DataInitStructure.SDIO_DataLength = 8;SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b;SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;SDIO_DataConfig(&SDIO_DataInitStructure);/*!< Send ACMD51 SD_APP_SEND_SCR with argument as 0 */SDIO_CmdInitStructure.SDIO_Argument = 0x0;SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_SEND_SCR;SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;SDIO_SendCommand(&SDIO_CmdInitStructure);errorstatus = CmdResp1Error(SD_CMD_SD_APP_SEND_SCR);if (errorstatus != SD_OK){return(errorstatus);}while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR))){if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET){*(tempscr + index) = SDIO_ReadData();index++;if (index > 1) break; }}if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET){SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);errorstatus = SD_DATA_TIMEOUT;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET){SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);errorstatus = SD_DATA_CRC_FAIL;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET){SDIO_ClearFlag(SDIO_FLAG_RXOVERR);errorstatus = SD_RX_OVERRUN;return(errorstatus);}else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET){SDIO_ClearFlag(SDIO_FLAG_STBITERR);errorstatus = SD_START_BIT_ERR;return(errorstatus);}/*!< Clear all the static flags */SDIO_ClearFlag(SDIO_STATIC_FLAGS);*(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);*(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);return(errorstatus); }/*** @brief Converts the number of bytes in power of two and returns the power.* @param NumberOfBytes: number of bytes.* @retval None*/ uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes) {uint8_t count = 0;while (NumberOfBytes != 1){NumberOfBytes >>= 1;count++;}return(count); }void SDIO_IRQHandler(void) {SD_ProcessIRQSrc(); }/*** @}*//*** @}*//*** @}*//*** @}*//*** @}*/ /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

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