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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/Common/stm32_eval_sdio_sd.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/Common/stm32_eval_sdio_sd.c new file mode 100644 index 0000000..424d2d3 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/Common/stm32_eval_sdio_sd.c @@ -0,0 +1,2502 @@ +/** + ****************************************************************************** + * @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>© COPYRIGHT 2011 STMicroelectronics</center></h2> + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32_eval_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 + * @{ + */ + +/** + * @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; + + /* 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_Detect()== SD_PRESENT) + { + if (SD_SendStatus(&resp1) != SD_OK) + { + return SD_CARD_ERROR; + } + else + { + return (SDCardState)((resp1 >> 9) & 0x0F); + } + } + else + { + return SD_CARD_ERROR; + } +} + +/** + * @brief Detect if SD card is correctly plugged in the memory slot. + * @param None + * @retval Return if SD is detected or not + */ +uint8_t SD_Detect(void) +{ + __IO uint8_t status = SD_PRESENT; + + /*!< Check GPIO to detect SD */ + if (GPIO_ReadInputDataBit(SD_DETECT_GPIO_PORT, SD_DETECT_PIN) != Bit_RESET) + { + status = SD_NOT_PRESENT; + } + return status; +} + +/** + * @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; +#endif + + TransferError = SD_OK; + TransferEnd = 0; + StopCondition = 0; + + SDIO->DCTRL = 0x0; + + + if (CardType == SDIO_HIGH_CAPACITY_SD_CARD) + { + BlockSize = 512; + ReadAddr /= 512; + } + + 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); +#endif + + return(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; +#endif + + TransferError = SD_OK; + TransferEnd = 0; + StopCondition = 0; + + SDIO->DCTRL = 0x0; + + + if (CardType == SDIO_HIGH_CAPACITY_SD_CARD) + { + BlockSize = 512; + WriteAddr /= 512; + } + + /*!< 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); +#endif + + return(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; + } + + /*!< 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 (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); +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |