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rt-thread/bsp/stm3210/sdcard.c

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new STM32 branch for STM32F103 LD/MD/HD/CL device. git-svn-id: https://rt-thread.googlecode.com/svn/trunk@56 bbd45198-f89e-11dd-88c7-29a3b14d5316
2009-09-29 21:23:27 +08:00
/**
******************************************************************************
* @file SDIO/sdcard.c
* @author MCD Application Team
* @version V3.1.0
* @date 06/19/2009
* @brief This file provides all the SD Card driver firmware functions.
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
*/
/* Includes ------------------------------------------------------------------*/
#include "sdcard.h"
#include <stm32f10x_dma.h>
#include <stm32f10x_sdio.h>
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup SDIO_Example
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define NULL 0
#define SDIO_STATIC_FLAGS ((uint32_t)0x000005FF)
#define SDIO_CMD0TIMEOUT ((uint32_t)0x00002710)
#define SDIO_FIFO_Address ((uint32_t)0x40018080)
/* 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)
/* 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_CARD_PROGRAMMING ((uint32_t)0x00000007)
#define SD_CARD_RECEIVING ((uint32_t)0x00000006)
#define SD_DATATIMEOUT ((uint32_t)0x000FFFFF)
#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)
/* 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)
/* 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)
#define SDIO_INIT_CLK_DIV ((uint8_t)0xB2)
#define SDIO_TRANSFER_CLK_DIV ((uint8_t)0x1)
/* Private macro -------------------------------------------------------------*/
/* 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 uint32_t DeviceMode = SD_POLLING_MODE;
static uint32_t TotalNumberOfBytes = 0, StopCondition = 0;
uint32_t *SrcBuffer, *DestBuffer;
volatile SD_Error TransferError = SD_OK;
__IO uint32_t TransferEnd = 0;
__IO uint32_t 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(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);
static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);
static void GPIO_Configuration(void);
static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize);
static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Initializes the SD Card and put it into StandBy State (Ready
* for data transfer).
* @param None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_Init(void)
{
SD_Error errorstatus = SD_OK;
/* 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);
}
/**
* @brief Enquires cards about their operating voltage and configures
* clock controls.
* @param None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_PowerON(void)
{
SD_Error errorstatus = SD_OK;
uint32_t response = 0, count = 0;
bool validvoltage = FALSE;
uint32_t 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)
{
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 = 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 (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 = 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_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 = 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 = (uint32_t)(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);
}
/**
* @brief Returns information about specific card.
* @param cardinfo : pointer to a SD_CardInfo structure
* that contains all SD card information.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
{
SD_Error errorstatus = SD_OK;
uint8_t tmp = 0;
cardinfo->CardType = (uint8_t)CardType;
cardinfo->RCA = (uint16_t)RCA;
/* Byte 0 */
tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);
cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
cardinfo->SD_csd.Reserved1 = tmp & 0x03;
/* Byte 1 */
tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);
cardinfo->SD_csd.TAAC = tmp;
/* Byte 2 */
tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);
cardinfo->SD_csd.NSAC = tmp;
/* Byte 3 */
tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);
cardinfo->SD_csd.MaxBusClkFrec = tmp;
/* Byte 4 */
tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);
cardinfo->SD_csd.CardComdClasses = tmp << 4;
/* Byte 5 */
tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);
cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
/* Byte 6 */
tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);
cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
cardinfo->SD_csd.Reserved2 = 0; /* Reserved */
if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
{
cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
/* Byte 7 */
tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
/* Byte 8 */
tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;
cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);
/* Byte 9 */
tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
/* Byte 10 */
tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;
cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
cardinfo->CardCapacity *= cardinfo->CardBlockSize;
}
else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
/* Byte 7 */
tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;
/* Byte 8 */
tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_csd.DeviceSize |= (tmp << 8);
/* Byte 9 */
tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_csd.DeviceSize |= (tmp);
/* Byte 10 */
tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
cardinfo->CardBlockSize = 512;
}
cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
/* Byte 11 */
tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);
cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
/* Byte 12 */
tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);
cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;
/* Byte 13 */
tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);
cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
cardinfo->SD_csd.Reserved3 = 0;
cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);
/* Byte 14 */
tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);
cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
cardinfo->SD_csd.ECC = (tmp & 0x03);
/* Byte 15 */
tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);
cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
cardinfo->SD_csd.Reserved4 = 1;
/* Byte 0 */
tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);
cardinfo->SD_cid.ManufacturerID = tmp;
/* Byte 1 */
tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);
cardinfo->SD_cid.OEM_AppliID = tmp << 8;
/* Byte 2 */
tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);
cardinfo->SD_cid.OEM_AppliID |= tmp;
/* Byte 3 */
tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);
cardinfo->SD_cid.ProdName1 = tmp << 24;
/* Byte 4 */
tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdName1 |= tmp << 16;
/* Byte 5 */
tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);
cardinfo->SD_cid.ProdName1 |= tmp << 8;
/* Byte 6 */
tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ProdName1 |= tmp;
/* Byte 7 */
tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);
cardinfo->SD_cid.ProdName2 = tmp;
/* Byte 8 */
tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdRev = tmp;
/* Byte 9 */
tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_cid.ProdSN = tmp << 24;
/* Byte 10 */
tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ProdSN |= tmp << 16;
/* Byte 11 */
tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);
cardinfo->SD_cid.ProdSN |= tmp << 8;
/* Byte 12 */
tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdSN |= tmp;
/* Byte 13 */
tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);
cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
/* Byte 14 */
tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ManufactDate |= tmp;
/* Byte 15 */
tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);
cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
cardinfo->SD_cid.Reserved2 = 1;
return(errorstatus);
}
/**
* @brief Enables wide bus opeartion for the requeseted card if
* supported by card.
* @param WideMode: Specifies the SD card wide bus mode.
* This parameter can be one of the following values:
* @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
* @arg SDIO_BusWide_4b: 4-bit data transfer
* @arg SDIO_BusWide_1b: 1-bit data transfer
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_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 Sets device mode whether to operate in Polling, Interrupt or
* DMA mode.
* @param Mode: Specifies the Data Transfer mode.
* This parameter can be one of the following values:
* @arg SD_DMA_MODE: Data transfer using DMA.
* @arg SD_INTERRUPT_MODE: Data transfer using interrupts.
* @arg SD_POLLING_MODE: Data transfer using flags.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SetDeviceMode(uint32_t 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);
}
/**
* @brief Selects od Deselects the corresponding card.
* @param addr: Address of the Card to be selected.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SelectDeselect(uint32_t addr)
{
SD_Error errorstatus = SD_OK;
/* Send CMD7 SDIO_SEL_DESEL_CARD */
SDIO_CmdInitStructure.SDIO_Argument = addr;
SDIO_CmdInitStructure.SDIO_CmdIndex = 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);
}
/**
* @brief Allows to read one block from a specified address in a card.
* @param addr: Address from where data are to be read.
* @param readbuff: pointer to the buffer that will contain the
* received data
* @param BlockSize: the SD card Data block size.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ReadBlock(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize)
{
SD_Error errorstatus = SD_OK;
uint32_t count = 0, *tempbuff = readbuff;
uint8_t 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 (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
addr /= 512;
}
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 = (uint32_t) 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 = (uint32_t) 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 = (uint32_t)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);
}
/**
* @brief Allows to read blocks from a specified address in a card.
* @param addr: Address from where data are to be read.
* @param readbuff: pointer to the buffer that will contain the
* received data.
* @param BlockSize: the SD card Data block size.
* @param NumberOfBlocks: number of blocks to be read.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ReadMultiBlocks(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
SD_Error errorstatus = SD_OK;
uint32_t count = 0, *tempbuff = readbuff;
uint8_t 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 (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
addr /= 512;
}
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 = (uint32_t) 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 = (uint32_t) 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 = (uint32_t)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_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == 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);
}
/**
* @brief Allows to write one block starting from a specified address
* in a card.
* @param addr: 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.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WriteBlock(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize)
{
SD_Error errorstatus = SD_OK;
uint8_t power = 0, cardstate = 0;
uint32_t timeout = 0, bytestransferred = 0;
uint32_t cardstatus = 0, count = 0, restwords = 0;
uint32_t *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);
}
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
addr /= 512;
}
/* 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 = (uint32_t) 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 = (uint32_t) (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 = (uint32_t) (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 = (uint32_t) 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);
}
/**
* @brief Allows to write blocks starting from a specified address in
* a card.
* @param addr: 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.
* @param NumberOfBlocks: number of blocks to be written.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
SD_Error errorstatus = SD_OK;
uint8_t power = 0, cardstate = 0;
uint32_t bytestransferred = 0;
uint32_t count = 0, restwords = 0;
uint32_t *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);
}
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
BlockSize = 512;
addr /= 512;
}
/* 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 = (uint32_t) 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 = (uint32_t) (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_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
{
/* To improve performance */
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (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 = (uint32_t)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 = (uint32_t)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 = (uint32_t) 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_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == 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);
}
/**
* @brief Gets the cuurent data transfer state.
* @param None
* @retval 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);
}
}
/**
* @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 = 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);
}
/**
* @brief Allows to erase memory area specified for the given card.
* @param startaddr: the start address.
* @param endaddr: the end address.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr)
{
SD_Error errorstatus = SD_OK;
uint32_t delay = 0;
__IO uint32_t maxdelay = 0;
uint8_t cardstate = 0;
/* Check if the card coomnd class supports erase command */
if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
return(errorstatus);
}
maxdelay = 72000 / ((SDIO->CLKCR & 0xFF) + 2);
if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
{
errorstatus = SD_LOCK_UNLOCK_FAILED;
return(errorstatus);
}
if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
startaddr /= 512;
endaddr /= 512;
}
/* According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
{
/* Send CMD32 SD_ERASE_GRP_START with argument as addr */
SDIO_CmdInitStructure.SDIO_Argument = startaddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = 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);
}
/**
* @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 = 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);
}
/**
* @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 = 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 = (uint32_t) 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);
}
/**
* @brief Allows to process all the interrupts that are high.
* @param None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ProcessIRQSrc(void)
{
uint32_t 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);
}
/**
* @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 = 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 = (uint32_t) 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);
}
}
}
/**
* @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 = 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 = (uint32_t)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 = (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 = 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 = (uint32_t) 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);
}
/**
* @brief Converts the number of bytes in power of two and returns the
* power.
* @param NumberOfBytes: number of bytes.
* @retval None
*/
static 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 Configures the SDIO Corresponding GPIO Ports
* @param None
* @retval 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);
}
/**
* @brief Configures the DMA2 Channel4 for SDIO Tx request.
* @param BufferSRC: pointer to the source buffer
* @param BufferSize: buffer size
* @retval None
*/
static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize)
{
DMA_InitTypeDef DMA_InitStructure;
DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
/* DMA2 Channel4 disable */
DMA_Cmd(DMA2_Channel4, DISABLE);
/* DMA2 Channel4 Config */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferSRC;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA2_Channel4, &DMA_InitStructure);
/* DMA2 Channel4 enable */
DMA_Cmd(DMA2_Channel4, ENABLE);
}
/**
* @brief Configures the DMA2 Channel4 for SDIO Rx request.
* @param BufferDST: pointer to the destination buffer
* @param BufferSize: buffer size
* @retval None
*/
static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize)
{
DMA_InitTypeDef DMA_InitStructure;
DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
/* DMA2 Channel4 disable */
DMA_Cmd(DMA2_Channel4, DISABLE);
/* DMA2 Channel4 Config */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferDST;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA2_Channel4, &DMA_InitStructure);
/* DMA2 Channel4 enable */
DMA_Cmd(DMA2_Channel4, ENABLE);
}
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
/*
* RT-Thread SD Card Driver
* 20090417 Bernard
*/
#include <rtthread.h>
#include <dfs_fs.h>
static struct rt_device sdcard_device;
static SD_CardInfo SDCardInfo;
static struct dfs_partition part;
/* RT-Thread Device Driver Interface */
static rt_err_t rt_sdcard_init(rt_device_t dev)
{
NVIC_InitTypeDef NVIC_InitStructure;
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);
return RT_EOK;
}
static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t rt_sdcard_close(rt_device_t dev)
{
return RT_EOK;
}
/* set sector size to 512 */
#define SECTOR_SIZE 512
static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
{
SD_Error status;
rt_uint32_t i;
// rt_kprintf("read: 0x%x, size %d\n", pos, size);
/* read all sectors */
for (i = 0; i < size / SECTOR_SIZE; i ++)
{
status = SD_ReadBlock((part.offset + i)* SECTOR_SIZE + pos,
(uint32_t*)((rt_uint8_t*)buffer + i * SECTOR_SIZE),
SECTOR_SIZE);
if (status != SD_OK)
{
rt_kprintf("sd card read failed\n");
return 0;
}
}
if (status == SD_OK) return size;
rt_kprintf("read failed: %d\n", status);
return 0;
}
static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
{
SD_Error status;
rt_uint32_t i;
// rt_kprintf("write: 0x%x, size %d\n", pos, size);
/* read all sectors */
for (i = 0; i < size / SECTOR_SIZE; i ++)
{
status = SD_WriteBlock((part.offset + i)* SECTOR_SIZE + pos,
(uint32_t*)((rt_uint8_t*)buffer + i * SECTOR_SIZE),
SECTOR_SIZE);
if (status != SD_OK)
{
rt_kprintf("sd card write failed\n");
return 0;
}
}
if (status == SD_OK) return size;
rt_kprintf("write failed: %d\n", status);
return 0;
}
static rt_err_t rt_sdcard_control(rt_device_t dev, rt_uint8_t cmd, void *args)
{
return RT_EOK;
}
void rt_hw_sdcard_init()
{
if (SD_Init())
{
SD_Error status;
rt_uint8_t *sector;
status = SD_GetCardInfo(&SDCardInfo);
if (status != SD_OK) goto __return;
status = SD_SelectDeselect((u32) (SDCardInfo.RCA << 16));
if (status != SD_OK) goto __return;
SD_EnableWideBusOperation(SDIO_BusWide_4b);
SD_SetDeviceMode(SD_DMA_MODE);
/* get the first sector to read partition table */
sector = (rt_uint8_t*) rt_malloc (512);
if (sector == RT_NULL)
{
rt_kprintf("allocate partition sector buffer failed\n");
return;
}
status = SD_ReadBlock(0, (uint32_t*)sector, 512);
if (status == SD_OK)
{
/* get the first partition */
if (dfs_filesystem_get_partition(&part, sector, 0) != 0)
{
/* there is no partition */
part.offset = 0;
part.size = 0;
}
}
else
{
/* there is no partition table */
part.offset = 0;
part.size = 0;
}
/* release sector buffer */
rt_free(sector);
/* register sdcard device */
sdcard_device.init = rt_sdcard_init;
sdcard_device.open = rt_sdcard_open;
sdcard_device.close = rt_sdcard_close;
sdcard_device.read = rt_sdcard_read;
sdcard_device.write = rt_sdcard_write;
sdcard_device.control = rt_sdcard_control;
/* no private */
sdcard_device.private = RT_NULL;
rt_device_register(&sdcard_device, "sd0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
return;
}
__return:
rt_kprintf("sdcard init failed\n");
}