20.4 實驗例程

功能：利用STM32F1的SDIO模塊讀取SD的容量并通過TFTLCD顯示。

（1）創建sdio_sdcard.h文件，并輸入以下代碼。

#ifndef _SDIO_SDCARD_H_
#define _SDIO_SDCARD_H_
#include "sys.h"
/*********************************************************************************************************
                SD    卡    數    據    定    義
*********************************************************************************************************/
//用戶配置區
#define SDIO_INIT_CLK_DIV        0x76                                  //SDIO初始化頻率，最大400Kh
#define SDIO_TRANSFER_CLK_DIV    0x00                                  //SDIO傳輸頻率,該值太小可能會導致讀寫文件出錯
//SDIO工作模式定義,通過SD_SetDeviceMode函數設置
#define SD_POLLING_MODE      0                                      //查詢模式,該模式下,如果讀寫有問題,建議增大SDIO_TRANSFER_CLK_DIV的設置
#define SD_DMA_MODE        1                                      //DMA模式,該模式下,如果讀寫有問題,建議增大SDIO_TRANSFER_CLK_DIV的設置
//SDIO 各種錯誤枚舉定義
typedef enum
{   
  //特殊錯誤定義 
  SD_CMD_CRC_FAIL                    = 1,                                //收到命令響應（CRC校驗失敗）
  SD_DATA_CRC_FAIL                   = 2,                                //發送/接收數據塊（CRC校驗失敗）
  SD_CMD_RSP_TIMEOUT                 = 3,                                //命令響應超時
  SD_DATA_TIMEOUT                    = 4,                                //數據超時
  SD_TX_UNDERRUN                     = 5,                                //傳輸FIFO運行
  SD_RX_OVERRUN                      = 6,                                //接收FIFO運行
  SD_START_BIT_ERR                   = 7,                                //在寬總線模式下的所有數據信號上未檢測到起始位
  SD_CMD_OUT_OF_RANGE                = 8,                                //CMD的參數超出范圍
  SD_ADDR_MISALIGNED                 = 9,                                //地址沒有對齊
  SD_BLOCK_LEN_ERR                   = 10,                              //卡不允許傳輸的塊長度，或者傳輸的字節數與塊長度不匹配
  SD_ERASE_SEQ_ERR                   = 11,                              //擦除命令序列中發生錯誤
  SD_BAD_ERASE_PARAM                 = 12,                              //刪除組的無效選擇
  SD_WRITE_PROT_VIOLATION            = 13,                              //試圖對寫保護塊進行編程
  SD_LOCK_UNLOCK_FAILED              = 14,                              //在unlock命令中檢測到序列或密碼錯誤，或者試圖訪問鎖定的卡
  SD_COM_CRC_FAILED                  = 15,                              //前一個命令的CRC校驗失敗
  SD_ILLEGAL_CMD                     = 16,                              //命令對卡狀態無效
  SD_CARD_ECC_FAILED                 = 17,                              //已應用卡內部ECC，但未能更正數據
  SD_CC_ERROR                        = 18,                              //內部卡控制錯誤
  SD_GENERAL_UNKNOWN_ERROR           = 19,                              //通用或未知錯誤
  SD_STREAM_READ_UNDERRUN            = 20,                              //卡無法在流讀取操作中維持數據傳輸
  SD_STREAM_WRITE_OVERRUN            = 21,                              //卡無法維持流模式下的數據編程
  SD_CID_CSD_OVERWRITE               = 22,                              //CID/CSD覆蓋錯誤
  SD_WP_ERASE_SKIP                   = 23,                              //只刪除了部分地址空間
  SD_CARD_ECC_DISABLED               = 24,                              //命令已在不使用內部ECC的情況下執行
  SD_ERASE_RESET                     = 25,                              //在執行之前清除了擦除序列,因為收到了一個超出擦除序列的命令
  SD_AKE_SEQ_ERROR                   = 26,                              //身份驗證順序錯誤
  SD_INVALID_VOLTRANGE               = 27,
  SD_ADDR_OUT_OF_RANGE               = 28,
  SD_SWITCH_ERROR                    = 29,
  SD_SDIO_DISABLED                   = 30,
  SD_SDIO_FUNCTION_BUSY              = 31,
  SD_SDIO_FUNCTION_FAILED            = 32,
  SD_SDIO_UNKNOWN_FUNCTION           = 33,
  //標準錯誤定義
  SD_INTERNAL_ERROR, 
  SD_NOT_CONFIGURED,
  SD_REQUEST_PENDING, 
  SD_REQUEST_NOT_APPLICABLE, 
  SD_INVALID_PARAMETER,  
  SD_UNSUPPORTED_FEATURE,  
  SD_UNSUPPORTED_HW,  
  SD_ERROR,  
  SD_OK = 0 
} SD_Error;      


//SD卡CSD寄存器數據      
typedef struct
{
  u8  CSDStruct;                                            //CSD結構
  u8  SysSpecVersion;                                          //系統版本
  u8  Reserved1;                                            //保留
  u8  TAAC;                                              //數據讀取訪問時間1
  u8  NSAC;                                              //在CLK期間的數據讀取訪問時間2
  u8  MaxBusClkFrec;                                          //總線最高頻率
  u16 CardComdClasses;                                        //卡命令類
  u8  RdBlockLen;                                            //最大讀取數據塊長度
  u8  PartBlockRead;                                          //允許讀取的部分塊
  u8  WrBlockMisalign;                                        //寫入塊未對準
  u8  RdBlockMisalign;                                        //讀取塊未對準
  u8  DSRImpl;                                            //DSR生效
  u8  Reserved2;                                            //保留 
  u32 DeviceSize;                                            //驅動大小
  u8  MaxRdCurrentVDDMin;                                        //最大讀取流@ VDD最小
  u8  MaxRdCurrentVDDMax;                                        //最大讀取流@ VDD最大 
  u8  MaxWrCurrentVDDMin;                                        //最大寫入流@ VDD最小 
  u8  MaxWrCurrentVDDMax;                                        //最大寫入流@ VDD最大 
  u8  DeviceSizeMul;                                          //驅動大小
  u8  EraseGrSize;                                          //擦除組大小
  u8  EraseGrMul;                                            //擦除組大小乘數
  u8  WrProtectGrSize;                                        //寫保護組大小
  u8  WrProtectGrEnable;                                        //寫保護組使能
  u8  ManDeflECC;                                            //制造商默認ECC
  u8  WrSpeedFact;                                          //寫入速度因子
  u8  MaxWrBlockLen;                                          //最大寫入數據長度
  u8  WriteBlockPaPartial;                                      //允許寫入的部分塊
  u8  Reserved3;                                            //保留
  u8  ContentProtectAppli;                                      //內容保護程序
  u8  FileFormatGrouop;                                        //文件格式組
  u8  CopyFlag;                                            //復制標志OTP 
  u8  PermWrProtect;                                          //永久寫保護
  u8  TempWrProtect;                                          //臨時寫保護
  u8  FileFormat;                                            //文件格式
  u8  ECC;                                              //ECC 代碼
  u8  CSD_CRC;                                            //CSD CRC 
  u8  Reserved4;                                            //總是1
} SD_CSD;   


//SD卡CID寄存器數據
typedef struct
{
  u8  ManufacturerID;                                          //制造商
  u16 OEM_AppliID;                                          //OEM/應用程序ID
  u32 ProdName1;                                            //名稱部分1
  u8  ProdName2;                                            //名稱部分2
  u8  ProdRev;                                            //版本
  u32 ProdSN;                                              //序列號
  u8  Reserved1;                                            //保留1
  u16 ManufactDate;                                          //出廠日期
  u8  CID_CRC;                                            //CID CRC
  u8  Reserved2;                                            //總是1
} SD_CID;   
//SD卡狀態
typedef enum
{
  SD_CARD_READY                  = 0x00000001,
  SD_CARD_IDENTIFICATION         = 0x00000002,
  SD_CARD_STANDBY                = 0x00000003,
  SD_CARD_TRANSFER               = 0x00000004,
  SD_CARD_SENDING                = 0x00000005,
  SD_CARD_RECEIVING              = 0x00000006,
  SD_CARD_PROGRAMMING            = 0x00000007,
  SD_CARD_DISCONNECTED           = 0x00000008,
  SD_CARD_ERROR                  = 0x000000FF
}SDCardState;
//SD卡信息,包括CSD,CID等數據
typedef struct
{
  SD_CSD SD_csd;
  SD_CID SD_cid;
  long long CardCapacity;                                        //SD卡容量,單位:字節,最大支持2^64字節大小的卡
  u32 CardBlockSize;                                          //SD卡塊大小  
  u16 RCA;                                                //卡相對地址
  u8 CardType;                                              //卡類型
} SD_CardInfo;
extern SD_CardInfo SDCardInfo;                                      //SD卡信息
//SDIO相關標志位,拷貝自:stm32f4xx_sdio.h
#define SDIO_FLAG_CCRCFAIL                  0x00000001
#define SDIO_FLAG_DCRCFAIL                  0x00000002
#define SDIO_FLAG_CTIMEOUT                  0x00000004
#define SDIO_FLAG_DTIMEOUT                  0x00000008
#define SDIO_FLAG_TXUNDERR                  0x00000010
#define SDIO_FLAG_RXOVERR                   0x00000020
#define SDIO_FLAG_CMDREND                   0x00000040
#define SDIO_FLAG_CMDSENT                   0x00000080
#define SDIO_FLAG_DATAEND                   0x00000100
#define SDIO_FLAG_STBITERR                  0x00000200
#define SDIO_FLAG_DBCKEND                   0x00000400
#define SDIO_FLAG_CMDACT                    0x00000800
#define SDIO_FLAG_TXACT                     0x00001000
#define SDIO_FLAG_RXACT                     0x00002000
#define SDIO_FLAG_TXFIFOHE                  0x00004000
#define SDIO_FLAG_RXFIFOHF                  0x00008000
#define SDIO_FLAG_TXFIFOF                   0x00010000
#define SDIO_FLAG_RXFIFOF                   0x00020000
#define SDIO_FLAG_TXFIFOE                   0x00040000
#define SDIO_FLAG_RXFIFOE                   0x00080000
#define SDIO_FLAG_TXDAVL                    0x00100000
#define SDIO_FLAG_RXDAVL                    0x00200000
#define SDIO_FLAG_SDIOIT                    0x00400000
#define SDIO_FLAG_CEATAEND                  0x00800000
//SDIO 指令集
#define SD_CMD_GO_IDLE_STATE                       0
#define SD_CMD_SEND_OP_COND                        1
#define SD_CMD_ALL_SEND_CID                        2
#define SD_CMD_SET_REL_ADDR                        3                        //SD卡的SDIO_SEND_REL_ADDR
#define SD_CMD_SET_DSR                             4
#define SD_CMD_SDIO_SEN_OP_COND                    5
#define SD_CMD_HS_SWITCH                           6
#define SD_CMD_SEL_DESEL_CARD                      7
#define SD_CMD_HS_SEND_EXT_CSD                     8
#define SD_CMD_SEND_CSD                            9
#define SD_CMD_SEND_CID                            10
#define SD_CMD_READ_DAT_UNTIL_STOP                 11                        //SD卡不支持
#define SD_CMD_STOP_TRANSMISSION                   12
#define SD_CMD_SEND_STATUS                         13
#define SD_CMD_HS_BUSTEST_READ                     14
#define SD_CMD_GO_INACTIVE_STATE                   15
#define SD_CMD_SET_BLOCKLEN                        16
#define SD_CMD_READ_SINGLE_BLOCK                   17
#define SD_CMD_READ_MULT_BLOCK                     18
#define SD_CMD_HS_BUSTEST_WRITE                    19
#define SD_CMD_WRITE_DAT_UNTIL_STOP                20 
#define SD_CMD_SET_BLOCK_COUNT                     23 
#define SD_CMD_WRITE_SINGLE_BLOCK                  24
#define SD_CMD_WRITE_MULT_BLOCK                    25
#define SD_CMD_PROG_CID                            26
#define SD_CMD_PROG_CSD                            27
#define SD_CMD_SET_WRITE_PROT                      28
#define SD_CMD_CLR_WRITE_PROT                      29
#define SD_CMD_SEND_WRITE_PROT                     30
#define SD_CMD_SD_ERASE_GRP_START                  32                        //設置要擦除的第一個寫塊的地址SD卡獨有
#define SD_CMD_SD_ERASE_GRP_END                    33                        //設置要擦除的連續范圍的最后一個寫塊的地址SD卡獨有
#define SD_CMD_ERASE_GRP_START                     35                        //設置要擦除的第一個寫塊的地址MMC card 3.31


#define SD_CMD_ERASE_GRP_END                       36                        //設置要擦除的連續范圍的最后一個寫塊的地址MMC card 3.31


#define SD_CMD_ERASE                               38
#define SD_CMD_FAST_IO                             39                        //SD卡不支持
#define SD_CMD_GO_IRQ_STATE                        40                        //SD卡不支持
#define SD_CMD_LOCK_UNLOCK                         42
#define SD_CMD_APP_CMD                             55
#define SD_CMD_GEN_CMD                             56
#define SD_CMD_NO_CMD                              64


#define SD_CMD_APP_SD_SET_BUSWIDTH                 6                        //SD卡獨有
#define SD_CMD_SD_APP_STAUS                        13                        //SD卡獨有
#define SD_CMD_SD_APP_SEND_NUM_WRITE_BLOCKS        22                        //SD卡獨有
#define SD_CMD_SD_APP_OP_COND                      41                        //SD卡獨有
#define SD_CMD_SD_APP_SET_CLR_CARD_DETECT          42                        //SD卡獨有
#define SD_CMD_SD_APP_SEND_SCR                     51                        //SD卡獨有
#define SD_CMD_SDIO_RW_DIRECT                      52                        //SD卡IO獨有
#define SD_CMD_SDIO_RW_EXTENDED                    53                        //SD卡IO獨有


#define SD_CMD_SD_APP_GET_MKB                      43                        //SD卡獨有
#define SD_CMD_SD_APP_GET_MID                      44                        //SD卡獨有
#define SD_CMD_SD_APP_SET_CER_RN1                  45                        //SD卡獨有
#define SD_CMD_SD_APP_GET_CER_RN2                  46                        //SD卡獨有
#define SD_CMD_SD_APP_SET_CER_RES2                 47                        //SD卡獨有
#define SD_CMD_SD_APP_GET_CER_RES1                 48                        //SD卡獨有
#define SD_CMD_SD_APP_SECURE_READ_MULTIPLE_BLOCK   18                        //SD卡獨有
#define SD_CMD_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK  25                        //SD卡獨有
#define SD_CMD_SD_APP_SECURE_ERASE                 38                        //SD卡獨有
#define SD_CMD_SD_APP_CHANGE_SECURE_AREA           49                        //SD卡獨有
#define SD_CMD_SD_APP_SECURE_WRITE_MKB             48                        //SD卡獨有
//支持的SD卡定義
#define SDIO_STD_CAPACITY_SD_CARD_V1_1             0x00000000
#define SDIO_STD_CAPACITY_SD_CARD_V2_0             0x00000001
#define SDIO_HIGH_CAPACITY_SD_CARD                 0x00000002
#define SDIO_MULTIMEDIA_CARD                       0x00000003
#define SDIO_SECURE_DIGITAL_IO_CARD                0x00000004
#define SDIO_HIGH_SPEED_MULTIMEDIA_CARD            0x00000005
#define SDIO_SECURE_DIGITAL_IO_COMBO_CARD          0x00000006
#define SDIO_HIGH_CAPACITY_MMC_CARD                0x00000007
//SDIO相關參數定義
#define NULL 0
#define SDIO_STATIC_FLAGS               0x000005FF
#define SDIO_CMD0TIMEOUT                0x00010000    
#define SDIO_DATATIMEOUT                0xFFFFFFFF    
#define SDIO_FIFO_Address               0x40018080
//Mask for errors Card Status R1 OCR Register  
#define SD_OCR_ADDR_OUT_OF_RANGE        0x80000000
#define SD_OCR_ADDR_MISALIGNED          0x40000000
#define SD_OCR_BLOCK_LEN_ERR            0x20000000
#define SD_OCR_ERASE_SEQ_ERR            0x10000000
#define SD_OCR_BAD_ERASE_PARAM          0x08000000
#define SD_OCR_WRITE_PROT_VIOLATION     0x04000000
#define SD_OCR_LOCK_UNLOCK_FAILED       0x01000000
#define SD_OCR_COM_CRC_FAILED           0x00800000
#define SD_OCR_ILLEGAL_CMD              0x00400000
#define SD_OCR_CARD_ECC_FAILED          0x00200000
#define SD_OCR_CC_ERROR                 0x00100000
#define SD_OCR_GENERAL_UNKNOWN_ERROR    0x00080000
#define SD_OCR_STREAM_READ_UNDERRUN     0x00040000
#define SD_OCR_STREAM_WRITE_OVERRUN     0x00020000
#define SD_OCR_CID_CSD_OVERWRIETE       0x00010000
#define SD_OCR_WP_ERASE_SKIP            0x00008000
#define SD_OCR_CARD_ECC_DISABLED        0x00004000
#define SD_OCR_ERASE_RESET              0x00002000
#define SD_OCR_AKE_SEQ_ERROR            0x00000008
#define SD_OCR_ERRORBITS                0xFDFFE008
//Masks for R6 Response 
#define SD_R6_GENERAL_UNKNOWN_ERROR     0x00002000
#define SD_R6_ILLEGAL_CMD               0x00004000
#define SD_R6_COM_CRC_FAILED            0x00008000


#define SD_VOLTAGE_WINDOW_SD            0x80100000
#define SD_HIGH_CAPACITY                0x40000000
#define SD_STD_CAPACITY                 0x00000000
#define SD_CHECK_PATTERN                0x000001AA
#define SD_VOLTAGE_WINDOW_MMC           0x80FF8000


#define SD_MAX_VOLT_TRIAL               0x0000FFFF
#define SD_ALLZERO                      0x00000000


#define SD_WIDE_BUS_SUPPORT             0x00040000
#define SD_SINGLE_BUS_SUPPORT           0x00010000
#define SD_CARD_LOCKED                  0x02000000
#define SD_CARD_PROGRAMMING             0x00000007
#define SD_CARD_RECEIVING               0x00000006
#define SD_DATATIMEOUT                  0xFFFFFFFF
#define SD_0TO7BITS                     0x000000FF
#define SD_8TO15BITS                    0x0000FF00
#define SD_16TO23BITS                   0x00FF0000
#define SD_24TO31BITS                   0xFF000000
#define SD_MAX_DATA_LENGTH              0x01FFFFFF


#define SD_HALFFIFO                     0x00000008
#define SD_HALFFIFOBYTES                0x00000020
//Command Class Supported  
#define SD_CCCC_LOCK_UNLOCK             0x00000080
#define SD_CCCC_WRITE_PROT              0x00000040
#define SD_CCCC_ERASE                   0x00000020                                 
//CMD8指令
#define SDIO_SEND_IF_COND               0x00000008
/*********************************************************************************************************
                  函    數    列    表
*********************************************************************************************************/
SD_Error SD_Init( void ) ;                                        //初始化SD卡
u8 SD_ReadDisk( u8*buf, u32 sector, u8 cnt ) ;                              //讀SD卡,fatfs/usb調用
u8 SD_WriteDisk( u8*buf, u32 sector, u8 cnt ) ;                              //寫SD卡,fatfs/usb調用


#endif