diff options
Diffstat (limited to 'src/stm32lib/examples/SDIO/sdcard.c')
| -rwxr-xr-x | src/stm32lib/examples/SDIO/sdcard.c | 2895 |
1 files changed, 2895 insertions, 0 deletions
diff --git a/src/stm32lib/examples/SDIO/sdcard.c b/src/stm32lib/examples/SDIO/sdcard.c new file mode 100755 index 0000000..c837e79 --- /dev/null +++ b/src/stm32lib/examples/SDIO/sdcard.c @@ -0,0 +1,2895 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : sdcard.c
+* Author : MCD Application Team
+* Version : V2.0.1
+* Date : 06/13/2008
+* Description : This file provides all the SD Card driver firmware
+* functions.
+********************************************************************************
+* 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.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "sdcard.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+#define NULL 0
+#define SDIO_STATIC_FLAGS ((u32)0x000005FF)
+#define SDIO_CMD0TIMEOUT ((u32)0x00002710)
+#define SDIO_FIFO_Address ((u32)0x40018080)
+
+/* Mask for errors Card Status R1 (OCR Register) */
+#define SD_OCR_ADDR_OUT_OF_RANGE ((u32)0x80000000)
+#define SD_OCR_ADDR_MISALIGNED ((u32)0x40000000)
+#define SD_OCR_BLOCK_LEN_ERR ((u32)0x20000000)
+#define SD_OCR_ERASE_SEQ_ERR ((u32)0x10000000)
+#define SD_OCR_BAD_ERASE_PARAM ((u32)0x08000000)
+#define SD_OCR_WRITE_PROT_VIOLATION ((u32)0x04000000)
+#define SD_OCR_LOCK_UNLOCK_FAILED ((u32)0x01000000)
+#define SD_OCR_COM_CRC_FAILED ((u32)0x00800000)
+#define SD_OCR_ILLEGAL_CMD ((u32)0x00400000)
+#define SD_OCR_CARD_ECC_FAILED ((u32)0x00200000)
+#define SD_OCR_CC_ERROR ((u32)0x00100000)
+#define SD_OCR_GENERAL_UNKNOWN_ERROR ((u32)0x00080000)
+#define SD_OCR_STREAM_READ_UNDERRUN ((u32)0x00040000)
+#define SD_OCR_STREAM_WRITE_OVERRUN ((u32)0x00020000)
+#define SD_OCR_CID_CSD_OVERWRIETE ((u32)0x00010000)
+#define SD_OCR_WP_ERASE_SKIP ((u32)0x00008000)
+#define SD_OCR_CARD_ECC_DISABLED ((u32)0x00004000)
+#define SD_OCR_ERASE_RESET ((u32)0x00002000)
+#define SD_OCR_AKE_SEQ_ERROR ((u32)0x00000008)
+#define SD_OCR_ERRORBITS ((u32)0xFDFFE008)
+
+/* Masks for R6 Response */
+#define SD_R6_GENERAL_UNKNOWN_ERROR ((u32)0x00002000)
+#define SD_R6_ILLEGAL_CMD ((u32)0x00004000)
+#define SD_R6_COM_CRC_FAILED ((u32)0x00008000)
+
+#define SD_VOLTAGE_WINDOW_SD ((u32)0x80100000)
+#define SD_HIGH_CAPACITY ((u32)0x40000000)
+#define SD_STD_CAPACITY ((u32)0x00000000)
+#define SD_CHECK_PATTERN ((u32)0x000001AA)
+
+#define SD_MAX_VOLT_TRIAL ((u32)0x0000FFFF)
+#define SD_ALLZERO ((u32)0x00000000)
+
+#define SD_WIDE_BUS_SUPPORT ((u32)0x00040000)
+#define SD_SINGLE_BUS_SUPPORT ((u32)0x00010000)
+#define SD_CARD_LOCKED ((u32)0x02000000)
+#define SD_CARD_PROGRAMMING ((u32)0x00000007)
+#define SD_CARD_RECEIVING ((u32)0x00000006)
+#define SD_DATATIMEOUT ((u32)0x000FFFFF)
+#define SD_0TO7BITS ((u32)0x000000FF)
+#define SD_8TO15BITS ((u32)0x0000FF00)
+#define SD_16TO23BITS ((u32)0x00FF0000)
+#define SD_24TO31BITS ((u32)0xFF000000)
+#define SD_MAX_DATA_LENGTH ((u32)0x01FFFFFF)
+
+#define SD_HALFFIFO ((u32)0x00000008)
+#define SD_HALFFIFOBYTES ((u32)0x00000020)
+
+/* Command Class Supported */
+#define SD_CCCC_LOCK_UNLOCK ((u32)0x00000080)
+#define SD_CCCC_WRITE_PROT ((u32)0x00000040)
+#define SD_CCCC_ERASE ((u32)0x00000020)
+
+/* Following commands are SD Card Specific commands.
+ SDIO_APP_CMD should be sent before sending these commands. */
+#define SDIO_SEND_IF_COND ((u32)0x00000008)
+
+#define SDIO_MULTIMEDIA_CARD ((u32)0x0)
+#define SDIO_SECURE_DIGITAL_CARD ((u32)0x1)
+#define SDIO_SECURE_DIGITAL_IO_CARD ((u32)0x2)
+#define SDIO_HIGH_SPEED_MULTIMEDIA_CARD ((u32)0x3)
+#define SDIO_SECURE_DIGITAL_IO_COMBO_CARD ((u32)0x4)
+#define SDIO_HIGH_CAPACITY_SD_CARD ((u32)0x5)
+#define SDIO_HIGH_CAPACITY_MMC_CARD ((u32)0x6)
+
+#define SDIO_INIT_CLK_DIV ((u8)0xB2)
+#define SDIO_TRANSFER_CLK_DIV ((u8)0x1)
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+static u32 CardType = SDIO_SECURE_DIGITAL_CARD;
+static u32 CSD_Tab[4], CID_Tab[4], RCA = 0;
+static u32 DeviceMode = SD_POLLING_MODE;
+static u32 TotalNumberOfBytes = 0, StopCondition = 0;
+u32 *SrcBuffer, *DestBuffer;
+volatile SD_Error TransferError = SD_OK;
+vu32 TransferEnd = 0;
+vu32 NumberOfBytes = 0;
+SDIO_InitTypeDef SDIO_InitStructure;
+SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
+SDIO_DataInitTypeDef SDIO_DataInitStructure;
+
+/* Private function prototypes -----------------------------------------------*/
+static SD_Error CmdError(void);
+static SD_Error CmdResp1Error(u8 cmd);
+static SD_Error CmdResp7Error(void);
+static SD_Error CmdResp3Error(void);
+static SD_Error CmdResp2Error(void);
+static SD_Error CmdResp6Error(u8 cmd, u16 *prca);
+static SD_Error SDEnWideBus(FunctionalState NewState);
+static SD_Error IsCardProgramming(u8 *pstatus);
+static SD_Error FindSCR(u16 rca, u32 *pscr);
+static u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes);
+static void GPIO_Configuration(void);
+static void DMA_TxConfiguration(u32 *BufferSRC, u32 BufferSize);
+static void DMA_RxConfiguration(u32 *BufferDST, u32 BufferSize);
+
+/* Private functions ---------------------------------------------------------*/
+
+/*******************************************************************************
+* Function Name : SD_Init
+* Description : Initializes the SD Card and put it into StandBy State (Ready
+* for data transfer).
+* Input : None
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_Init(void)
+{
+ SD_Error errorstatus = SD_OK;
+
+ /* Configure SDIO interface GPIO */
+ GPIO_Configuration();
+
+ /* Enable the SDIO AHB Clock */
+ RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE);
+
+ /* Enable the DMA2 Clock */
+ RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
+
+ 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 */
+ /* HCLK = 72 MHz, SDIOCLK = 72 MHz, SDIO_CK = HCLK/(2 + 1) = 24 MHz */
+ 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);
+}
+
+/*******************************************************************************
+* Function Name : SD_PowerON
+* Description : Enquires cards about their operating voltage and configures
+* clock controls.
+* Input : None
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_PowerON(void)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 response = 0, count = 0;
+ bool validvoltage = FALSE;
+ u32 SDType = SD_STD_CAPACITY;
+
+ /* Power ON Sequence -------------------------------------------------------*/
+ /* Configure the SDIO peripheral */
+ SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV; /* HCLK = 72MHz, SDIOCLK = 72MHz, SDIO_CK = HCLK/(178 + 2) = 400 KHz */
+ 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 = SDIO_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)
+ {
+ SDType = SD_HIGH_CAPACITY; /* SD Card 2.0 */
+ }
+ else
+ {
+ /* CMD55 */
+ SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_APP_CMD);
+ }
+ /* CMD55 */
+ SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_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 = SDIO_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(SDIO_APP_CMD);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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 = (bool) (((response >> 31) == 1) ? 1 : 0);
+ count++;
+ }
+ if (count >= SD_MAX_VOLT_TRIAL)
+ {
+ errorstatus = SD_INVALID_VOLTRANGE;
+ return(errorstatus);
+ }
+
+ if (SDType == SD_HIGH_CAPACITY)
+ {
+ CardType = SDIO_HIGH_CAPACITY_SD_CARD;
+ }
+ else
+ {
+ CardType = SDIO_SECURE_DIGITAL_CARD;
+ }
+ }/* else MMC Card */
+
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_PowerOFF
+* Description : Turns the SDIO output signals off.
+* Input : None
+* Output : None
+* Return : 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);
+}
+
+/*******************************************************************************
+* Function Name : SD_InitializeCards
+* Description : Intialises all cards or single card as the case may be.
+* Card(s) come into standby state.
+* Input : None
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_InitializeCards(void)
+{
+ SD_Error errorstatus = SD_OK;
+ u16 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 = SDIO_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_SECURE_DIGITAL_CARD == CardType) || (SDIO_SECURE_DIGITAL_IO_CARD == 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 = SDIO_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(SDIO_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 = (u32)(rca << 16);
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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);
+}
+
+/*******************************************************************************
+* Function Name : SD_GetCardInfo
+* Description : Returns information about specific card.
+* Input : cardinfo : pointer to a SD_CardInfo structure
+* that contains all SD card information.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
+{
+ SD_Error errorstatus = SD_OK;
+ u8 tmp = 0;
+
+ cardinfo->CardType = (u8)CardType;
+ cardinfo->RCA = (u16)RCA;
+
+ /* Byte 0 */
+ tmp = (u8)((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 = (u8)((CSD_Tab[0] & 0x00FF0000) >> 16);
+ cardinfo->SD_csd.TAAC = tmp;
+
+ /* Byte 2 */
+ tmp = (u8)((CSD_Tab[0] & 0x0000FF00) >> 8);
+ cardinfo->SD_csd.NSAC = tmp;
+
+ /* Byte 3 */
+ tmp = (u8)(CSD_Tab[0] & 0x000000FF);
+ cardinfo->SD_csd.MaxBusClkFrec = tmp;
+
+ /* Byte 4 */
+ tmp = (u8)((CSD_Tab[1] & 0xFF000000) >> 24);
+ cardinfo->SD_csd.CardComdClasses = tmp << 4;
+
+ /* Byte 5 */
+ tmp = (u8)((CSD_Tab[1] & 0x00FF0000) >> 16);
+ cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
+ cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
+
+ /* Byte 6 */
+ tmp = (u8)((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 */
+ cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
+
+ /* Byte 7 */
+ tmp = (u8)(CSD_Tab[1] & 0x000000FF);
+ cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
+
+ /* Byte 8 */
+ tmp = (u8)((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 = (u8)((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 = (u8)((CSD_Tab[2] & 0x0000FF00) >> 8);
+ cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
+ cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
+ cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
+
+ /* Byte 11 */
+ tmp = (u8)(CSD_Tab[2] & 0x000000FF);
+ cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
+ cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
+
+ /* Byte 12 */
+ tmp = (u8)((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 = (u8)((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 = (u8)((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 = (u8)(CSD_Tab[3] & 0x000000FF);
+ cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
+ cardinfo->SD_csd.Reserved4 = 1;
+
+
+ /* Byte 0 */
+ tmp = (u8)((CID_Tab[0] & 0xFF000000) >> 24);
+ cardinfo->SD_cid.ManufacturerID = tmp;
+
+ /* Byte 1 */
+ tmp = (u8)((CID_Tab[0] & 0x00FF0000) >> 16);
+ cardinfo->SD_cid.OEM_AppliID = tmp << 8;
+
+ /* Byte 2 */
+ tmp = (u8)((CID_Tab[0] & 0x000000FF00) >> 8);
+ cardinfo->SD_cid.OEM_AppliID |= tmp;
+
+ /* Byte 3 */
+ tmp = (u8)(CID_Tab[0] & 0x000000FF);
+ cardinfo->SD_cid.ProdName1 = tmp << 24;
+
+ /* Byte 4 */
+ tmp = (u8)((CID_Tab[1] & 0xFF000000) >> 24);
+ cardinfo->SD_cid.ProdName1 |= tmp << 16;
+
+ /* Byte 5 */
+ tmp = (u8)((CID_Tab[1] & 0x00FF0000) >> 16);
+ cardinfo->SD_cid.ProdName1 |= tmp << 8;
+
+ /* Byte 6 */
+ tmp = (u8)((CID_Tab[1] & 0x0000FF00) >> 8);
+ cardinfo->SD_cid.ProdName1 |= tmp;
+
+ /* Byte 7 */
+ tmp = (u8)(CID_Tab[1] & 0x000000FF);
+ cardinfo->SD_cid.ProdName2 = tmp;
+
+ /* Byte 8 */
+ tmp = (u8)((CID_Tab[2] & 0xFF000000) >> 24);
+ cardinfo->SD_cid.ProdRev = tmp;
+
+ /* Byte 9 */
+ tmp = (u8)((CID_Tab[2] & 0x00FF0000) >> 16);
+ cardinfo->SD_cid.ProdSN = tmp << 24;
+
+ /* Byte 10 */
+ tmp = (u8)((CID_Tab[2] & 0x0000FF00) >> 8);
+ cardinfo->SD_cid.ProdSN |= tmp << 16;
+
+ /* Byte 11 */
+ tmp = (u8)(CID_Tab[2] & 0x000000FF);
+ cardinfo->SD_cid.ProdSN |= tmp << 8;
+
+ /* Byte 12 */
+ tmp = (u8)((CID_Tab[3] & 0xFF000000) >> 24);
+ cardinfo->SD_cid.ProdSN |= tmp;
+
+ /* Byte 13 */
+ tmp = (u8)((CID_Tab[3] & 0x00FF0000) >> 16);
+ cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
+ cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
+
+ /* Byte 14 */
+ tmp = (u8)((CID_Tab[3] & 0x0000FF00) >> 8);
+ cardinfo->SD_cid.ManufactDate |= tmp;
+
+ /* Byte 15 */
+ tmp = (u8)(CID_Tab[3] & 0x000000FF);
+ cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
+ cardinfo->SD_cid.Reserved2 = 1;
+
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_EnableWideBusOperation
+* Description : Enables wide bus opeartion for the requeseted card if
+* supported by card.
+* Input : WideMode: Specifies the SD card wide bus mode.
+* This parameter can be one of the following values:
+* - SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
+* - SDIO_BusWide_4b: 4-bit data transfer
+* - SDIO_BusWide_1b: 1-bit data transfer
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_EnableWideBusOperation(u32 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_SECURE_DIGITAL_CARD == 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);
+}
+
+/*******************************************************************************
+* Function Name : SD_SetDeviceMode
+* Description : Sets device mode whether to operate in Polling, Interrupt or
+* DMA mode.
+* Input : Mode: Specifies the Data Transfer mode.
+* This parameter can be one of the following values:
+* - SD_DMA_MODE: Data transfer using DMA.
+* - SD_INTERRUPT_MODE: Data transfer using interrupts.
+* - SD_POLLING_MODE: Data transfer using flags.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_SetDeviceMode(u32 Mode)
+{
+ SD_Error errorstatus = SD_OK;
+
+ if ((Mode == SD_DMA_MODE) || (Mode == SD_INTERRUPT_MODE) || (Mode == SD_POLLING_MODE))
+ {
+ DeviceMode = Mode;
+ }
+ else
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ }
+ return(errorstatus);
+
+}
+
+/*******************************************************************************
+* Function Name : SD_SelectDeselect
+* Description : Selects od Deselects the corresponding card.
+* Input : addr: Address of the Card to be selected.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_SelectDeselect(u32 addr)
+{
+ SD_Error errorstatus = SD_OK;
+
+ /* Send CMD7 SDIO_SEL_DESEL_CARD */
+ SDIO_CmdInitStructure.SDIO_Argument = addr;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SEL_DESEL_CARD);
+
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_ReadBlock
+* Description : Allows to read one block from a specified address in a card.
+* Input : - addr: Address from where data are to be read.
+* - readbuff: pointer to the buffer that will contain the
+* received data
+* - blocksize: the SD card Data block size.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_ReadBlock(u32 addr, u32 *readbuff, u16 BlockSize)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 count = 0, *tempbuff = readbuff;
+ u8 power = 0;
+
+ if (NULL == readbuff)
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ TransferError = SD_OK;
+ TransferEnd = 0;
+ TotalNumberOfBytes = 0;
+
+ /* Clear all DPSM configuration */
+ SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+ SDIO_DataInitStructure.SDIO_DataLength = 0;
+ SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
+ SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+ SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+ SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
+ SDIO_DataConfig(&SDIO_DataInitStructure);
+ SDIO_DMACmd(DISABLE);
+
+ if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+ {
+ errorstatus = SD_LOCK_UNLOCK_FAILED;
+ return(errorstatus);
+ }
+
+ if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
+ {
+ power = convert_from_bytes_to_power_of_two(BlockSize);
+
+ /* Set Block Size for Card */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) BlockSize;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SET_BLOCKLEN);
+
+ if (SD_OK != errorstatus)
+ {
+ return(errorstatus);
+ }
+ }
+ else
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+ SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
+ SDIO_DataInitStructure.SDIO_DataBlockSize = (u32) power << 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);
+
+ TotalNumberOfBytes = BlockSize;
+ StopCondition = 0;
+ DestBuffer = readbuff;
+
+ /* Send CMD17 READ_SINGLE_BLOCK */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32)addr;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_READ_SINGLE_BLOCK);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ /* In case of single block transfer, no need of stop transfer at all.*/
+ if (DeviceMode == SD_POLLING_MODE)
+ {
+ /* 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);
+ }
+ else if (DeviceMode == SD_INTERRUPT_MODE)
+ {
+ SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);
+ while ((TransferEnd == 0) && (TransferError == SD_OK))
+ {}
+ if (TransferError != SD_OK)
+ {
+ return(TransferError);
+ }
+ }
+ else if (DeviceMode == SD_DMA_MODE)
+ {
+ SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
+ SDIO_DMACmd(ENABLE);
+ DMA_RxConfiguration(readbuff, BlockSize);
+ while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+ {}
+ }
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_ReadMultiBlocks
+* Description : Allows to read blocks from a specified address in a card.
+* Input : - addr: Address from where data are to be read.
+* - readbuff: pointer to the buffer that will contain the
+* received data.
+* - BlockSize: the SD card Data block size.
+* - NumberOfBlocks: number of blocks to be read.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_ReadMultiBlocks(u32 addr, u32 *readbuff, u16 BlockSize, u32 NumberOfBlocks)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 count = 0, *tempbuff = readbuff;
+ u8 power = 0;
+
+ if (NULL == readbuff)
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ TransferError = SD_OK;
+ TransferEnd = 0;
+ TotalNumberOfBytes = 0;
+
+ /* Clear all DPSM configuration */
+ SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+ SDIO_DataInitStructure.SDIO_DataLength = 0;
+ SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
+ SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+ SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+ SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
+ SDIO_DataConfig(&SDIO_DataInitStructure);
+ SDIO_DMACmd(DISABLE);
+
+ if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+ {
+ errorstatus = SD_LOCK_UNLOCK_FAILED;
+ return(errorstatus);
+ }
+
+ if ((BlockSize > 0) && (BlockSize <= 2048) && (0 == (BlockSize & (BlockSize - 1))))
+ {
+ power = convert_from_bytes_to_power_of_two(BlockSize);
+
+ /* Set Block Size for Card */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) BlockSize;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SET_BLOCKLEN);
+
+ if (SD_OK != errorstatus)
+ {
+ return(errorstatus);
+ }
+ }
+ else
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ if (NumberOfBlocks > 1)
+ {
+ /* Common to all modes */
+ if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ TotalNumberOfBytes = NumberOfBlocks * BlockSize;
+ StopCondition = 1;
+ DestBuffer = readbuff;
+
+ SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+ SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
+ SDIO_DataInitStructure.SDIO_DataBlockSize = (u32) power << 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 = (u32)addr;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_READ_MULT_BLOCK);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+
+ if (DeviceMode == SD_POLLING_MODE)
+ {
+ /* Polling mode */
+ while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
+ {
+ if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
+ {
+ for (count = 0; count < SD_HALFFIFO; count++)
+ {
+ *(tempbuff + count) = SDIO_ReadData();
+ }
+ tempbuff += SD_HALFFIFO;
+ }
+ }
+
+ 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++;
+ }
+
+ if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
+ {
+ /* In Case Of SD-CARD Send Command STOP_TRANSMISSION */
+ if ((SDIO_SECURE_DIGITAL_CARD == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+ {
+ /* Send CMD12 STOP_TRANSMISSION */
+ SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_STOP_TRANSMISSION);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ }
+ }
+ /* Clear all the static flags */
+ SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+ }
+ else if (DeviceMode == SD_INTERRUPT_MODE)
+ {
+ SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);
+ while ((TransferEnd == 0) && (TransferError == SD_OK))
+ {}
+ if (TransferError != SD_OK)
+ {
+ return(TransferError);
+ }
+ }
+ else if (DeviceMode == SD_DMA_MODE)
+ {
+ SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
+ SDIO_DMACmd(ENABLE);
+ DMA_RxConfiguration(readbuff, (NumberOfBlocks * BlockSize));
+ while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+ {}
+ while ((TransferEnd == 0) && (TransferError == SD_OK))
+ {}
+ if (TransferError != SD_OK)
+ {
+ return(TransferError);
+ }
+ }
+ }
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_WriteBlock
+* Description : Allows to write one block starting from a specified address
+* in a card.
+* Input : - addr: Address from where data are to be read.
+* - writebuff: pointer to the buffer that contain the data to be
+* transferred.
+* - BlockSize: the SD card Data block size.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_WriteBlock(u32 addr, u32 *writebuff, u16 BlockSize)
+{
+ SD_Error errorstatus = SD_OK;
+ u8 power = 0, cardstate = 0;
+ u32 timeout = 0, bytestransferred = 0;
+ u32 cardstatus = 0, count = 0, restwords = 0;
+ u32 *tempbuff = writebuff;
+
+ if (writebuff == NULL)
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ TransferError = SD_OK;
+ TransferEnd = 0;
+ TotalNumberOfBytes = 0;
+
+ SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+ SDIO_DataInitStructure.SDIO_DataLength = 0;
+ SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
+ SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+ SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+ SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
+ SDIO_DataConfig(&SDIO_DataInitStructure);
+ SDIO_DMACmd(DISABLE);
+
+ if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+ {
+ errorstatus = SD_LOCK_UNLOCK_FAILED;
+ return(errorstatus);
+ }
+
+ /* Set the block size, both on controller and card */
+ if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
+ {
+ power = convert_from_bytes_to_power_of_two(BlockSize);
+
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) BlockSize;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SET_BLOCKLEN);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ }
+ else
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ /* Wait till card is ready for data Added */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) (RCA << 16);
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SEND_STATUS);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+
+ cardstatus = SDIO_GetResponse(SDIO_RESP1);
+
+ timeout = SD_DATATIMEOUT;
+
+ while (((cardstatus & 0x00000100) == 0) && (timeout > 0))
+ {
+ timeout--;
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) (RCA << 16);
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SEND_STATUS);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ cardstatus = SDIO_GetResponse(SDIO_RESP1);
+ }
+
+ if (timeout == 0)
+ {
+ return(SD_ERROR);
+ }
+
+ /* Send CMD24 WRITE_SINGLE_BLOCK */
+ SDIO_CmdInitStructure.SDIO_Argument = addr;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_WRITE_SINGLE_BLOCK);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+
+ TotalNumberOfBytes = BlockSize;
+ StopCondition = 0;
+ SrcBuffer = writebuff;
+
+ SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+ SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
+ SDIO_DataInitStructure.SDIO_DataBlockSize = (u32) power << 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 (DeviceMode == 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 ((TotalNumberOfBytes - bytestransferred) < 32)
+ {
+ restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) : (( TotalNumberOfBytes - 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);
+ }
+ }
+ else if (DeviceMode == SD_INTERRUPT_MODE)
+ {
+ SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_FLAG_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
+ while ((TransferEnd == 0) && (TransferError == SD_OK))
+ {}
+ if (TransferError != SD_OK)
+ {
+ return(TransferError);
+ }
+ }
+ else if (DeviceMode == SD_DMA_MODE)
+ {
+ SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
+ DMA_TxConfiguration(writebuff, BlockSize);
+ SDIO_DMACmd(ENABLE);
+ while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+ {}
+ while ((TransferEnd == 0) && (TransferError == SD_OK))
+ {}
+ if (TransferError != SD_OK)
+ {
+ return(TransferError);
+ }
+ }
+
+ /* Clear all the static flags */
+ SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+ /* Wait till the card is in programming state */
+ errorstatus = IsCardProgramming(&cardstate);
+
+ while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
+ {
+ errorstatus = IsCardProgramming(&cardstate);
+ }
+
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_WriteMultiBlocks
+* Description : Allows to write blocks starting from a specified address in
+* a card.
+* Input : - addr: Address from where data are to be read.
+* - writebuff: pointer to the buffer that contain the data to be
+* transferred.
+* - BlockSize: the SD card Data block size.
+* - NumberOfBlocks: number of blocks to be written.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_WriteMultiBlocks(u32 addr, u32 *writebuff, u16 BlockSize, u32 NumberOfBlocks)
+{
+ SD_Error errorstatus = SD_OK;
+ u8 power = 0, cardstate = 0;
+ u32 bytestransferred = 0;
+ u32 count = 0, restwords = 0;
+ u32 *tempbuff = writebuff;
+
+ if (writebuff == NULL)
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ TransferError = SD_OK;
+ TransferEnd = 0;
+ TotalNumberOfBytes = 0;
+
+ SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+ SDIO_DataInitStructure.SDIO_DataLength = 0;
+ SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
+ SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+ SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+ SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
+ SDIO_DataConfig(&SDIO_DataInitStructure);
+ SDIO_DMACmd(DISABLE);
+
+ if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+ {
+ errorstatus = SD_LOCK_UNLOCK_FAILED;
+ return(errorstatus);
+ }
+
+ /* Set the block size, both on controller and card */
+ if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
+ {
+ power = convert_from_bytes_to_power_of_two(BlockSize);
+
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) BlockSize;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SET_BLOCKLEN);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ }
+ else
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ /* Wait till card is ready for data Added */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) (RCA << 16);
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SEND_STATUS);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+
+ if (NumberOfBlocks > 1)
+ {
+ /* Common to all modes */
+ if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ if ((SDIO_SECURE_DIGITAL_CARD == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+ {
+ /* To improve performance */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) (RCA << 16);
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_APP_CMD);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ /* To improve performance */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32)NumberOfBlocks;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SET_BLOCK_COUNT);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ }
+
+ /* Send CMD25 WRITE_MULT_BLOCK with argument data address */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32)addr;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_WRITE_MULT_BLOCK);
+
+ if (SD_OK != errorstatus)
+ {
+ return(errorstatus);
+ }
+
+ TotalNumberOfBytes = NumberOfBlocks * BlockSize;
+ StopCondition = 1;
+ SrcBuffer = writebuff;
+
+ SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+ SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
+ SDIO_DataInitStructure.SDIO_DataBlockSize = (u32) power << 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);
+
+ if (DeviceMode == SD_POLLING_MODE)
+ {
+ while (!(SDIO->STA & (SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
+ {
+ if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
+ {
+ if (!((TotalNumberOfBytes - bytestransferred) < SD_HALFFIFOBYTES))
+ {
+ for (count = 0; count < SD_HALFFIFO; count++)
+ {
+ SDIO_WriteData(*(tempbuff + count));
+ }
+ tempbuff += SD_HALFFIFO;
+ bytestransferred += SD_HALFFIFOBYTES;
+ }
+ else
+ {
+ restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) :
+ ((TotalNumberOfBytes - bytestransferred) / 4 + 1);
+
+ for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
+ {
+ SDIO_WriteData(*tempbuff);
+ }
+ }
+ }
+ }
+
+ 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);
+ }
+
+ if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
+ {
+ if ((SDIO_SECURE_DIGITAL_CARD == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+ {
+ /* Send CMD12 STOP_TRANSMISSION */
+ SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_STOP_TRANSMISSION);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ }
+ }
+ }
+ else if (DeviceMode == SD_INTERRUPT_MODE)
+ {
+ SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
+ while ((TransferEnd == 0) && (TransferError == SD_OK))
+ {}
+ if (TransferError != SD_OK)
+ {
+ return(TransferError);
+ }
+ }
+ else if (DeviceMode == SD_DMA_MODE)
+ {
+ SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
+ SDIO_DMACmd(ENABLE);
+ DMA_TxConfiguration(writebuff, (NumberOfBlocks * BlockSize));
+ while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+ {}
+ while ((TransferEnd == 0) && (TransferError == SD_OK))
+ {}
+ if (TransferError != SD_OK)
+ {
+ return(TransferError);
+ }
+ }
+ }
+ /* Clear all the static flags */
+ SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+ /* Wait till the card is in programming state */
+ errorstatus = IsCardProgramming(&cardstate);
+
+ while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
+ {
+ errorstatus = IsCardProgramming(&cardstate);
+ }
+
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_GetTransferState
+* Description : Gets the cuurent data transfer state.
+* Input : None
+* Output : None
+* Return : SDTransferState: Data Transfer state.
+* This value can be:
+* - SD_NO_TRANSFER: No data transfer is acting
+* - SD_TRANSFER_IN_PROGRESS: Data transfer is acting
+*******************************************************************************/
+SDTransferState SD_GetTransferState(void)
+{
+ if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
+ {
+ return(SD_TRANSFER_IN_PROGRESS);
+ }
+ else
+ {
+ return(SD_NO_TRANSFER);
+ }
+}
+
+/*******************************************************************************
+* Function Name : SD_StopTransfer
+* Description : Aborts an ongoing data transfer.
+* Input : None
+* Output : None
+* Return : 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 = SDIO_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(SDIO_STOP_TRANSMISSION);
+
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_Erase
+* Description : Allows to erase memory area specified for the given card.
+* Input : - startaddr: the start address.
+* - endaddr: the end address.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_Erase(u32 startaddr, u32 endaddr)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 delay = 0;
+ vu32 maxdelay = 0;
+ u8 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 = 72000 / ((SDIO->CLKCR & 0xFF) + 2);
+
+ if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+ {
+ errorstatus = SD_LOCK_UNLOCK_FAILED;
+ return(errorstatus);
+ }
+
+ /* According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
+ if ((SDIO_SECURE_DIGITAL_CARD == 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 = SDIO_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(SDIO_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 = SDIO_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(SDIO_SD_ERASE_GRP_END);
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+ }
+
+ /* Send CMD38 ERASE */
+ SDIO_CmdInitStructure.SDIO_Argument = 0;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_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);
+}
+
+/*******************************************************************************
+* Function Name : SD_SendStatus
+* Description : Returns the current card's status.
+* Input : pcardstatus: pointer to the buffer that will contain the SD
+* card status (Card Status register).
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_SendStatus(u32 *pcardstatus)
+{
+ SD_Error errorstatus = SD_OK;
+
+ if (pcardstatus == NULL)
+ {
+ errorstatus = SD_INVALID_PARAMETER;
+ return(errorstatus);
+ }
+
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) RCA << 16;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SEND_STATUS);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+
+ *pcardstatus = SDIO_GetResponse(SDIO_RESP1);
+
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_SendSDStatus
+* Description : Returns the current SD card's status.
+* Input : psdstatus: pointer to the buffer that will contain the SD
+* card status (SD Status register).
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_SendSDStatus(u32 *psdstatus)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 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 = SDIO_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(SDIO_SET_BLOCKLEN);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+
+ /* CMD55 */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) RCA << 16;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_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 = SDIO_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(SDIO_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);
+ psdstatus -= 16;
+ for (count = 0; count < 16; count++)
+ {
+ psdstatus[count] = ((psdstatus[count] & SD_0TO7BITS) << 24) |((psdstatus[count] & SD_8TO15BITS) << 8) |
+ ((psdstatus[count] & SD_16TO23BITS) >> 8) |((psdstatus[count] & SD_24TO31BITS) >> 24);
+ }
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : SD_ProcessIRQSrc
+* Description : Allows to process all the interrupts that are high.
+* Input : None
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+SD_Error SD_ProcessIRQSrc(void)
+{
+ u32 count = 0, restwords = 0;
+
+ if (DeviceMode == SD_INTERRUPT_MODE)
+ {
+ if (SDIO_GetITStatus(SDIO_IT_RXFIFOHF) != RESET)
+ {
+ for (count = 0; count < SD_HALFFIFO; count++)
+ {
+ *(DestBuffer + count) = SDIO_ReadData();
+ }
+ DestBuffer += SD_HALFFIFO;
+ NumberOfBytes += SD_HALFFIFOBYTES;
+ }
+ else if (SDIO_GetITStatus(SDIO_IT_TXFIFOHE) != RESET)
+ {
+ if ((TotalNumberOfBytes - NumberOfBytes) < SD_HALFFIFOBYTES)
+ {
+ restwords = ((TotalNumberOfBytes - NumberOfBytes) % 4 == 0) ?
+ ((TotalNumberOfBytes - NumberOfBytes) / 4) :
+ ((TotalNumberOfBytes - NumberOfBytes) / 4 + 1);
+
+ for (count = 0; count < restwords; count++, SrcBuffer++, NumberOfBytes += 4)
+ {
+ SDIO_WriteData(*SrcBuffer);
+ }
+ }
+ else
+ {
+ for (count = 0; count < SD_HALFFIFO; count++)
+ {
+ SDIO_WriteData(*(SrcBuffer + count));
+ }
+
+ SrcBuffer += SD_HALFFIFO;
+ NumberOfBytes += SD_HALFFIFOBYTES;
+ }
+ }
+ }
+
+ if (SDIO_GetITStatus(SDIO_IT_DATAEND) != RESET)
+ {
+ if (DeviceMode != SD_DMA_MODE)
+ {
+ while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (NumberOfBytes < TotalNumberOfBytes))
+ {
+ *DestBuffer = SDIO_ReadData();
+ DestBuffer++;
+ NumberOfBytes += 4;
+ }
+ }
+
+ if (StopCondition == 1)
+ {
+ TransferError = SD_StopTransfer();
+ }
+ else
+ {
+ TransferError = SD_OK;
+ }
+ SDIO_ClearITPendingBit(SDIO_IT_DATAEND);
+ 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);
+ TransferEnd = 1;
+ NumberOfBytes = 0;
+ return(TransferError);
+ }
+
+ if (SDIO_GetITStatus(SDIO_IT_DCRCFAIL) != RESET)
+ {
+ SDIO_ClearITPendingBit(SDIO_IT_DCRCFAIL);
+ 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);
+ NumberOfBytes = 0;
+ TransferError = SD_DATA_CRC_FAIL;
+ return(SD_DATA_CRC_FAIL);
+ }
+
+ if (SDIO_GetITStatus(SDIO_IT_DTIMEOUT) != RESET)
+ {
+ SDIO_ClearITPendingBit(SDIO_IT_DTIMEOUT);
+ 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);
+ NumberOfBytes = 0;
+ TransferError = SD_DATA_TIMEOUT;
+ return(SD_DATA_TIMEOUT);
+ }
+
+ if (SDIO_GetITStatus(SDIO_IT_RXOVERR) != RESET)
+ {
+ SDIO_ClearITPendingBit(SDIO_IT_RXOVERR);
+ 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);
+ NumberOfBytes = 0;
+ TransferError = SD_RX_OVERRUN;
+ return(SD_RX_OVERRUN);
+ }
+
+ if (SDIO_GetITStatus(SDIO_IT_TXUNDERR) != RESET)
+ {
+ SDIO_ClearITPendingBit(SDIO_IT_TXUNDERR);
+ 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);
+ NumberOfBytes = 0;
+ TransferError = SD_TX_UNDERRUN;
+ return(SD_TX_UNDERRUN);
+ }
+
+ if (SDIO_GetITStatus(SDIO_IT_STBITERR) != RESET)
+ {
+ SDIO_ClearITPendingBit(SDIO_IT_STBITERR);
+ 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);
+ NumberOfBytes = 0;
+ TransferError = SD_START_BIT_ERR;
+ return(SD_START_BIT_ERR);
+ }
+
+ return(SD_OK);
+}
+
+/*******************************************************************************
+* Function Name : CmdError
+* Description : Checks for error conditions for CMD0.
+* Input : None
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+static SD_Error CmdError(void)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 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);
+}
+
+/*******************************************************************************
+* Function Name : CmdResp7Error
+* Description : Checks for error conditions for R7.
+* response.
+* Input : None
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+static SD_Error CmdResp7Error(void)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 status;
+ u32 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;
+ return(errorstatus);
+ }
+ return(errorstatus);
+}
+
+/*******************************************************************************
+* Function Name : CmdResp1Error
+* Description : Checks for error conditions for R1.
+* response
+* Input : cmd: The sent command index.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+static SD_Error CmdResp1Error(u8 cmd)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 status;
+ u32 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);
+}
+
+/*******************************************************************************
+* Function Name : CmdResp3Error
+* Description : Checks for error conditions for R3 (OCR).
+* response.
+* Input : None
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+static SD_Error CmdResp3Error(void)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 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);
+}
+
+/*******************************************************************************
+* Function Name : CmdResp2Error
+* Description : Checks for error conditions for R2 (CID or CSD).
+* response.
+* Input : None
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+static SD_Error CmdResp2Error(void)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 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);
+}
+
+/*******************************************************************************
+* Function Name : CmdResp6Error
+* Description : Checks for error conditions for R6 (RCA).
+* response.
+* Input : - cmd: The sent command index.
+* - prca: pointer to the variable that will contain the SD
+* card relative address RCA.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+static SD_Error CmdResp6Error(u8 cmd, u16 *prca)
+{
+ SD_Error errorstatus = SD_OK;
+ u32 status;
+ u32 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 = (u16) (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);
+}
+
+/*******************************************************************************
+* Function Name : SDEnWideBus
+* Description : Enables or disables the SDIO wide bus mode.
+* Input : NewState: new state of the SDIO wide bus mode.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+static SD_Error SDEnWideBus(FunctionalState NewState)
+{
+ SD_Error errorstatus = SD_OK;
+
+ u32 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 = (u32) RCA << 16;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_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 = SDIO_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(SDIO_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 = (u32) RCA << 16;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_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 = SDIO_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(SDIO_APP_SD_SET_BUSWIDTH);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+
+ return(errorstatus);
+ }
+ else
+ {
+ errorstatus = SD_REQUEST_NOT_APPLICABLE;
+ return(errorstatus);
+ }
+ }
+}
+
+/*******************************************************************************
+* Function Name : IsCardProgramming
+* Description : Checks if the SD card is in programming state.
+* Input : pstatus: pointer to the variable that will contain the SD
+* card state.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+static SD_Error IsCardProgramming(u8 *pstatus)
+{
+ SD_Error errorstatus = SD_OK;
+ vu32 respR1 = 0, status = 0;
+
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) RCA << 16;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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 = (u32)SDIO_GetCommandResponse();
+
+ /* Check response received is of desired command */
+ if (status != SDIO_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 = (u8) ((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);
+}
+
+/*******************************************************************************
+* Function Name : FindSCR
+* Description : Find the SD card SCR register value.
+* Input : - rca: selected card address.
+* - pscr: pointer to the buffer that will contain the SCR value.
+* Output : None
+* Return : SD_Error: SD Card Error code.
+*******************************************************************************/
+static SD_Error FindSCR(u16 rca, u32 *pscr)
+{
+ u32 index = 0;
+ SD_Error errorstatus = SD_OK;
+ u32 tempscr[2] = {0, 0};
+
+ /* Set Block Size To 8 Bytes */
+ /* Send CMD55 APP_CMD with argument as card's RCA */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32)8;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_SET_BLOCKLEN);
+
+ if (errorstatus != SD_OK)
+ {
+ return(errorstatus);
+ }
+
+ /* Send CMD55 APP_CMD with argument as card's RCA */
+ SDIO_CmdInitStructure.SDIO_Argument = (u32) RCA << 16;
+ SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_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(SDIO_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 = SDIO_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(SDIO_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);
+}
+
+/*******************************************************************************
+* Function Name : convert_from_bytes_to_power_of_two
+* Description : Converts the number of bytes in power of two and returns the
+* power.
+* Input : NumberOfBytes: number of bytes.
+* Output : None
+* Return : None
+*******************************************************************************/
+static u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes)
+{
+ u8 count = 0;
+
+ while (NumberOfBytes != 1)
+ {
+ NumberOfBytes >>= 1;
+ count++;
+ }
+ return(count);
+}
+
+/*******************************************************************************
+* Function Name : GPIO_Configuration
+* Description : Configures the SDIO Corresponding GPIO Ports
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+static void GPIO_Configuration(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* GPIOC and GPIOD Periph clock enable */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);
+
+ /* Configure PC.08, PC.09, PC.10, PC.11, PC.12 pin: D0, D1, D2, D3, CLK pin */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+ GPIO_Init(GPIOC, &GPIO_InitStructure);
+
+ /* Configure PD.02 CMD line */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
+ GPIO_Init(GPIOD, &GPIO_InitStructure);
+}
+
+/*******************************************************************************
+* Function Name : DMA_TxConfiguration
+* Description : Configures the DMA2 Channel4 for SDIO Tx request.
+* Input : - BufferSRC: pointer to the source buffer
+* - BufferSize: buffer size
+* Output : None
+* Return : None
+*******************************************************************************/
+static void DMA_TxConfiguration(u32 *BufferSRC, u32 BufferSize)
+{
+ DMA_InitTypeDef DMA_InitStructure;
+
+ DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
+
+ /* DMA2 Channel4 disable */
+ DMA_Cmd(DMA2_Channel4, DISABLE);
+
+ /* DMA2 Channel4 Config */
+ DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SDIO_FIFO_Address;
+ DMA_InitStructure.DMA_MemoryBaseAddr = (u32)BufferSRC;
+ DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
+ DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
+ DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+ DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
+ DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
+ DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
+ DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
+ DMA_InitStructure.DMA_Priority = DMA_Priority_High;
+ DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
+ DMA_Init(DMA2_Channel4, &DMA_InitStructure);
+
+ /* DMA2 Channel4 enable */
+ DMA_Cmd(DMA2_Channel4, ENABLE);
+}
+
+/*******************************************************************************
+* Function Name : DMA_RxConfiguration
+* Description : Configures the DMA2 Channel4 for SDIO Rx request.
+* Input : - BufferDST: pointer to the destination buffer
+* - BufferSize: buffer size
+* Output : None
+* Return : None
+*******************************************************************************/
+static void DMA_RxConfiguration(u32 *BufferDST, u32 BufferSize)
+{
+ DMA_InitTypeDef DMA_InitStructure;
+
+ DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
+
+ /* DMA2 Channel4 disable */
+ DMA_Cmd(DMA2_Channel4, DISABLE);
+
+ /* DMA2 Channel4 Config */
+ DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SDIO_FIFO_Address;
+ DMA_InitStructure.DMA_MemoryBaseAddr = (u32)BufferDST;
+ DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
+ DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
+ DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+ DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
+ DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
+ DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
+ DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
+ DMA_InitStructure.DMA_Priority = DMA_Priority_High;
+ DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
+ DMA_Init(DMA2_Channel4, &DMA_InitStructure);
+
+ /* DMA2 Channel4 enable */
+ DMA_Cmd(DMA2_Channel4, ENABLE);
+}
+
+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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