/** ****************************************************************************** * @file stm324x7i_eval_sdio_sd.c * @author MCD Application Team * @version V1.0.0 * @date 11-January-2013 * @brief This file provides a set of functions needed to manage the SDIO SD * Card memory mounted on STM324x7I-EVAL evaluation board. * * @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 stm324x7i_eval.h file, and the initialization is * performed in SD_LowLevel_Init() function declared in stm324x7i_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 stm324x7i_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 stm324x7i_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 stm324x7i_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() * and SD_ProcessDMAIRQ() function inside the DMA2_Streamx_IRQHandler(). * Don't forget to enable the SDIO_IRQn and DMA2_Stream3_IRQn or * DMA2_Stream6_IRQn interrupts 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 stm324x7i_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() * and SD_ProcessDMAIRQ() function inside the DMA2_Streamx_IRQHandler(). * Don't forget to enable the SDIO_IRQn and DMA2_Stream3_IRQn or * DMA2_Stream6_IRQn interrupts 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 (Selecting DMA for SDIO data Transfer) * ============================================================ * 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); * // DMA2 STREAMx Interrupt ENABLE * NVIC_InitStructure.NVIC_IRQChannel = SD_SDIO_DMA_IRQn; * NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; * 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); * * - Add the SDIO and DMA2 StreamX (3 or 6) IRQ Handlers: * void SDIO_IRQHandler(void) * { * SD_ProcessIRQ(); * } * void SD_SDIO_DMA_IRQHANDLER(void) * { * SD_ProcessDMAIRQ(); * } * * F - Programming Model (Selecting Polling for SDIO data Transfer) * ================================================================ * //Only SD Card Single Block operation are managed. * Status = SD_Init(); // Initialization Step as described in section * * // Write operation as described in Section C * Status = SD_WriteBlock(buffer, address, 512); * * // Read operation as described in Section B * Status = SD_ReadBlock(buffer, address, 512); * * 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 * *

© COPYRIGHT 2013 STMicroelectronics

* * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); * You may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.st.com/software_license_agreement_liberty_v2 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_dma.h" #include "stm32f4xx_gpio.h" #include "stm32f4xx_sdio.h" #include "stm324x7i_eval_sdio_sd.h" //#include "std.h" /** @addtogroup Utilities * @{ */ /** @addtogroup STM32_EVAL * @{ */ /** @addtogroup STM324x7I_EVAL * @{ */ /** @addtogroup STM324x7I_EVAL_SDIO_SD * @brief This file provides all the SD Card driver firmware functions. * @{ */ /** @defgroup STM324x7I_EVAL_SDIO_SD_Private_Types * @{ */ /** * @} */ /** @defgroup stm324x7i_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)0x00080000) // dpgeorge: was 0x10000 /** * @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 STM324x7I_EVAL_SDIO_SD_Private_Macros * @{ */ /** * @} */ /** @defgroup STM324x7I_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, DMAEndOfTransfer = 0; SD_CardInfo SDCardInfo; SDIO_InitTypeDef SDIO_InitStructure; SDIO_CmdInitTypeDef SDIO_CmdInitStructure; SDIO_DataInitTypeDef SDIO_DataInitStructure; /** * @} */ /** @defgroup STM324x7I_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 STM324x7I_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) { __IO 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 */ /*!< SDIO_CK = SDIOCLK / (SDIO_TRANSFER_CLK_DIV + 2) */ /*!< on STM32F4xx 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); /*----------------- 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_SET) { 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) { __IO 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 */ /*!< SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) */ /*!< on STM32F4xx 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 = ((uint64_t)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(uint64_t addr) { SD_Error errorstatus = SD_OK; /*!< Send CMD7 SDIO_SEL_DESEL_CARD */ SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)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, uint64_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 defined (SD_DMA_MODE) SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE); SDIO_DMACmd(ENABLE); SD_LowLevel_DMA_RxConfig((uint32_t *)readbuff, BlockSize); #endif 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 = 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); } count = SD_DATATIMEOUT; while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (count > 0)) { *tempbuff = SDIO_ReadData(); tempbuff++; count--; } /*!< Clear all the static flags */ SDIO_ClearFlag(SDIO_STATIC_FLAGS); #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, uint64_t ReadAddr, uint16_t BlockSize, uint32_t NumberOfBlocks) { SD_Error errorstatus = SD_OK; TransferError = SD_OK; TransferEnd = 0; StopCondition = 1; SDIO->DCTRL = 0x0; SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE); SD_LowLevel_DMA_RxConfig((uint32_t *)readbuff, (NumberOfBlocks * BlockSize)); SDIO_DMACmd(ENABLE); 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); } 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; uint32_t timeout; timeout = SD_DATATIMEOUT; while ((DMAEndOfTransfer == 0x00) && (TransferEnd == 0) && (TransferError == SD_OK) && (timeout > 0)) { timeout--; } DMAEndOfTransfer = 0x00; timeout = SD_DATATIMEOUT; while(((SDIO->STA & SDIO_FLAG_RXACT)) && (timeout > 0)) { timeout--; } if (StopCondition == 1) { errorstatus = SD_StopTransfer(); StopCondition = 0; } if ((timeout == 0) && (errorstatus == SD_OK)) { errorstatus = SD_DATA_TIMEOUT; } /*!< Clear all the static flags */ SDIO_ClearFlag(SDIO_STATIC_FLAGS); if (TransferError != SD_OK) { return(TransferError); } else { 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, uint64_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 defined (SD_DMA_MODE) SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE); SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, BlockSize); SDIO_DMACmd(ENABLE); #endif if (CardType == SDIO_HIGH_CAPACITY_SD_CARD) { BlockSize = 512; WriteAddr /= 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); } /*!< Send CMD24 WRITE_SINGLE_BLOCK */ SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)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); } #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, uint64_t WriteAddr, uint16_t BlockSize, uint32_t NumberOfBlocks) { SD_Error errorstatus = SD_OK; TransferError = SD_OK; TransferEnd = 0; StopCondition = 1; SDIO->DCTRL = 0x0; SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE); SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, (NumberOfBlocks * BlockSize)); SDIO_DMACmd(ENABLE); if (CardType == SDIO_HIGH_CAPACITY_SD_CARD) { BlockSize = 512; WriteAddr /= 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); } /*!< 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); 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; uint32_t timeout; timeout = SD_DATATIMEOUT; while ((DMAEndOfTransfer == 0x00) && (TransferEnd == 0) && (TransferError == SD_OK) && (timeout > 0)) { timeout--; } DMAEndOfTransfer = 0x00; timeout = SD_DATATIMEOUT; while(((SDIO->STA & SDIO_FLAG_TXACT)) && (timeout > 0)) { timeout--; } if (StopCondition == 1) { errorstatus = SD_StopTransfer(); StopCondition = 0; } if ((timeout == 0) && (errorstatus == SD_OK)) { errorstatus = SD_DATA_TIMEOUT; } /*!< Clear all the static flags */ SDIO_ClearFlag(SDIO_STATIC_FLAGS); if (TransferError != SD_OK) { return(TransferError); } else { 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_CmdInitStructure.SDIO_Argument = 0x0; SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION; 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_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(uint64_t startaddr, uint64_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 =(uint32_t)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 = (uint32_t)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); delay = SD_DATATIMEOUT; while ((delay > 0) && (errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate))) { errorstatus = IsCardProgramming(&cardstate); delay--; } 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; if (pcardstatus == NULL) { errorstatus = SD_INVALID_PARAMETER; return(errorstatus); } 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); errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS); if (errorstatus != SD_OK) { return(errorstatus); } *pcardstatus = SDIO_GetResponse(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); } count = SD_DATATIMEOUT; while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (count > 0)) { *psdstatus = SDIO_ReadData(); psdstatus++; count--; } /*!< 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 (SDIO_GetITStatus(SDIO_IT_DATAEND) != RESET) { TransferError = SD_OK; SDIO_ClearITPendingBit(SDIO_IT_DATAEND); TransferEnd = 1; } else if (SDIO_GetITStatus(SDIO_IT_DCRCFAIL) != RESET) { SDIO_ClearITPendingBit(SDIO_IT_DCRCFAIL); TransferError = SD_DATA_CRC_FAIL; } else if (SDIO_GetITStatus(SDIO_IT_DTIMEOUT) != RESET) { SDIO_ClearITPendingBit(SDIO_IT_DTIMEOUT); TransferError = SD_DATA_TIMEOUT; } else if (SDIO_GetITStatus(SDIO_IT_RXOVERR) != RESET) { SDIO_ClearITPendingBit(SDIO_IT_RXOVERR); TransferError = SD_RX_OVERRUN; } else if (SDIO_GetITStatus(SDIO_IT_TXUNDERR) != RESET) { SDIO_ClearITPendingBit(SDIO_IT_TXUNDERR); TransferError = SD_TX_UNDERRUN; } else if (SDIO_GetITStatus(SDIO_IT_STBITERR) != RESET) { SDIO_ClearITPendingBit(SDIO_IT_STBITERR); TransferError = SD_START_BIT_ERR; } SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE); return(TransferError); } /** * @brief This function waits until the SDIO DMA data transfer is finished. * @param None. * @retval None. */ void SD_ProcessDMAIRQ(void) { if(DMA2->LISR & SD_SDIO_DMA_FLAG_TCIF) { DMAEndOfTransfer = 0x01; DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_TCIF|SD_SDIO_DMA_FLAG_FEIF); } } /** * @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) { SD_Error errorstatus = SD_OK; uint32_t status; uint32_t response_r1; 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); } /*!< 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 for analysis */ response_r1 = SDIO_GetResponse(SDIO_RESP1); if ((response_r1 & SD_OCR_ERRORBITS) == SD_ALLZERO) { return(errorstatus); } if (response_r1 & SD_OCR_ADDR_OUT_OF_RANGE) { return(SD_ADDR_OUT_OF_RANGE); } if (response_r1 & SD_OCR_ADDR_MISALIGNED) { return(SD_ADDR_MISALIGNED); } if (response_r1 & SD_OCR_BLOCK_LEN_ERR) { return(SD_BLOCK_LEN_ERR); } if (response_r1 & SD_OCR_ERASE_SEQ_ERR) { return(SD_ERASE_SEQ_ERR); } if (response_r1 & SD_OCR_BAD_ERASE_PARAM) { return(SD_BAD_ERASE_PARAM); } if (response_r1 & SD_OCR_WRITE_PROT_VIOLATION) { return(SD_WRITE_PROT_VIOLATION); } if (response_r1 & SD_OCR_LOCK_UNLOCK_FAILED) { return(SD_LOCK_UNLOCK_FAILED); } if (response_r1 & SD_OCR_COM_CRC_FAILED) { return(SD_COM_CRC_FAILED); } if (response_r1 & SD_OCR_ILLEGAL_CMD) { return(SD_ILLEGAL_CMD); } if (response_r1 & SD_OCR_CARD_ECC_FAILED) { return(SD_CARD_ECC_FAILED); } if (response_r1 & SD_OCR_CC_ERROR) { return(SD_CC_ERROR); } if (response_r1 & SD_OCR_GENERAL_UNKNOWN_ERROR) { return(SD_GENERAL_UNKNOWN_ERROR); } if (response_r1 & SD_OCR_STREAM_READ_UNDERRUN) { return(SD_STREAM_READ_UNDERRUN); } if (response_r1 & SD_OCR_STREAM_WRITE_OVERRUN) { return(SD_STREAM_WRITE_OVERRUN); } if (response_r1 & SD_OCR_CID_CSD_OVERWRIETE) { return(SD_CID_CSD_OVERWRITE); } if (response_r1 & SD_OCR_WP_ERASE_SKIP) { return(SD_WP_ERASE_SKIP); } if (response_r1 & SD_OCR_CARD_ECC_DISABLED) { return(SD_CARD_ECC_DISABLED); } if (response_r1 & SD_OCR_ERASE_RESET) { return(SD_ERASE_RESET); } if (response_r1 & SD_OCR_AKE_SEQ_ERROR) { return(SD_AKE_SEQ_ERROR); } return(errorstatus); } /** * @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); } /** * @brief Switch mode High-Speed * @note This function must be used after "Transfer State" * @note This operation should be followed by the configuration * of PLL to have SDIOCK clock between 67 and 75 MHz * @param None * @retval SD_Error: SD Card Error code. */ SD_Error SD_HighSpeed (void) { SD_Error errorstatus = SD_OK; uint32_t scr[2] = {0, 0}; uint32_t SD_SPEC = 0 ; uint8_t hs[64] = {0} ; uint32_t count = 0, *tempbuff = (uint32_t *)hs; TransferError = SD_OK; TransferEnd = 0; StopCondition = 0; SDIO->DCTRL = 0x0; /*!< Get SCR Register */ errorstatus = FindSCR(RCA, scr); if (errorstatus != SD_OK) { return(errorstatus); } /* Test the Version supported by the card*/ SD_SPEC = (scr[1] & 0x01000000)||(scr[1] & 0x02000000); if (SD_SPEC != SD_ALLZERO) { /* Set Block Size for Card */ SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)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); } 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 CMD6 switch mode */ SDIO_CmdInitStructure.SDIO_Argument = 0x80FFFF01; SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_HS_SWITCH; 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_HS_SWITCH); 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++) { *(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); } count = SD_DATATIMEOUT; while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (count > 0)) { *tempbuff = SDIO_ReadData(); tempbuff++; count--; } /*!< Clear all the static flags */ SDIO_ClearFlag(SDIO_STATIC_FLAGS); /* Test if the switch mode HS is ok */ if ((hs[13]& 0x2)==0x2) { errorstatus=SD_OK; } else { errorstatus=SD_UNSUPPORTED_FEATURE ; } } return(errorstatus); } /** * @} */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/