sdcard.h

来自「ARM7 lpc2132+vs1003+sdcard 制作的 MP3 此程序在」· C头文件 代码 · 共 417 行 · 第 1/2 页

基本命令集 Basic command set
**********************************************/

#define 	CMD0		0				/* 复位SD 卡 Reset cards to idle state */
#define 	CMD0_R		R1
#define 	CMD1 		1				/* 读OCR寄存器 Read the OCR (MMC mode, do not use for SD cards) */						
#define 	CMD1_R 		R1
#define 	CMD9 		9				/* 读CSD寄存器 Card sends the CSD */
#define 	CMD9_R 		R1
#define 	CMD10 		10				/* 读CID寄存器 Card sends CID */
#define 	CMD10_R 	R1
#define 	CMD12 		12				/* 停止读多块时的数据传输 Stop a multiple block (stream) read/write operation */
#define 	CMD12_R 	R1B
#define 	CMD13 		13				/* 读 Card_Status 寄存器 Get the addressed card's status register */
#define 	CMD13_R 	R2

/***************************** 块读命令集 Block read commands **************************/
#define 	CMD16 		16				/* 设置块的长度 Set the block length */
#define 	CMD16_R 	R1
#define 	CMD17 		17				/* 读单块 Read a single block */
#define 	CMD17_R 	R1
#define 	CMD18 		18				/* 读多块,直至主机发送CMD12为止 Read multiple blocks until a CMD12 */
#define 	CMD18_R 	R1

/***************************** 块写命令集 Block write commands *************************/

#define 	CMD24 		24				/* 写单块 Write a block of the size selected with CMD16 */
#define 	CMD24_R 	R1
#define 	CMD25		25				/* 写多块 Multiple block write until a CMD12 */
#define 	CMD25_R 	R1
#define 	CMD27 		27				/* 写CSD寄存器 Program the programmable bits of the CSD */
#define 	CMD27_R 	R1
/***************************** 写保护 Write protection *****************************/
#define 	CMD28 		28				/* Set the write protection bit of the addressed group */
#define 	CMD28_R 	R1B
#define 	CMD29 		29				/* Clear the write protection bit of the addressed group */
#define 	CMD29_R 	R1B
#define 	CMD30 		30				/* Ask the card for the status of the write protection bits */
#define 	CMD30_R 	R1

/***************************** 擦除命令 Erase commands *******************************/
#define 	CMD32 		32				/* 设置擦除块的起始地址 Set the address of the first write block to be erased */
#define 	CMD32_R 	R1
#define 	CMD33 		33				/* 设置擦除块的终止地址 Set the address of the last write block to be erased */
#define 	CMD33_R 	R1
#define 	CMD38 		38				/* 擦除所选择的块 Erase the selected write blocks */
#define 	CMD38_R 	R1B

/***************************** 锁卡命令 Lock Card commands ***************************/
#define 	CMD42 		42		/* 设置/复位密码或上锁/解锁卡 Set/reset the password or lock/unlock the card */
#define 	CMD42_R		R1B

/* Commands from 42 to 54, not defined here */
/***************************** 应用命令 Application-specific commands ****************/
#define 	CMD55 		55				/* 禁止下一个命令为应用命令  Flag that the next command is application-specific */
#define 	CMD55_R 	R1
#define 	CMD56 		56				/* 应用命令的通用I/O  General purpose I/O for application-specific commands */
#define 	CMD56_R 	R1
#define 	CMD58 		58				/* 读OCR寄存器  Read the OCR (SPI01 mode only) */
#define 	CMD58_R 	R3
#define 	CMD59 		59				/* 使能或禁止 CRC Turn CRC on or off */
#define 	CMD59_R 	R1

/***************************** 应用命令 Application-specific commands ***************/
#define 	ACMD13 		13				/* 获取 SD Status寄存器 Get the SD card's status */
#define 	ACMD13_R 	R2
#define 	ACMD22 		22				/* 得到已写入卡中的块的个数 Get the number of written write blocks (Minus errors ) */
#define 	ACMD22_R 	R1
#define 	ACMD23 		23				/* 在写之前,设置预先擦除的块的个数 Set the number of write blocks to be pre-erased before writing */
#define 	ACMD23_R 	R1
#define 	ACMD41 		41				/* 读取OCR寄存器 Get the card's OCR (SD mode) */
#define 	ACMD41_R 	R1
#define 	ACMD42 		42				/* 连接/断开CD/DATA[3]引脚上的上拉电阻 Connect or disconnect the 50kOhm internal pull-up on CD/DAT[3] */
#define 	ACMD42_R 	R1
#define 	ACMD51 		51				/* 读取SCR寄存器 Get the SD configuration register */
#define 	ACMD51_R 	R1


#define 	SD_CRC_EN				0			/* 设置数据传输时是否使用CRC */
#define 	SPI1_CLOCK				5529600		/* 正常通信时,SPI1时钟频率 frequency (Hz) */
#define 	SD_BLOCKSIZE 			512			/* SD卡块的长度 */
#define 	SD_BLOCKSIZE_NBITS		9  

/* 下面函数不常用,如果用户不需要,可置为 0 裁剪指定函数 */

#define 	SD_ReadMultiBlock_EN    0			/* 是否使能读多块函数 */
#define 	SD_WriteMultiBlock_EN   0			/* 是否使能写多块函数 */
#define 	SD_EraseBlock_EN		0			/* 是否使能擦卡函数 */
#define 	SD_ProgramCSD_EN   		0			/* 是否使能写CSD寄存器函数 */
#define 	SD_ReadCID_EN	   		0			/* 是否使能读CID寄存器函数 */
#define		SD_ReadSD_Status_EN		0			/* 是否使能读SD_Status寄存器函数 */
#define	    SD_ReadSCR_EN			0			/* 是否使能读SCR寄存器函数 */









extern void SD_Power(void);

extern void SPI1_Init(uint8 speed);

extern uint8 SPI1_SrByte(INT8U byte);

extern void SD_SPI1Delay(INT8U value);

extern INT8U SD_ChkCard(void);

#if SD_CRC_EN
extern INT16U const CRCTable[256] ;
extern INT16U SD_GetCRC16(INT8U *pSource, INT16U len);
extern INT8U SD_GetCmdByte6(INT8U cmd, INT8U *param);	
#endif

extern INT8U SD_SendCmd(INT8U cmd, INT8U *param, INT8U resptype, INT8U *resp);

extern INT8U SD_ReadReg(INT32U len, INT8U *recbuf);

extern INT8U SD_ReadCSD(INT8U csdlen, INT8U *recbuf);

extern void SD_CalTimeout(INT8U *csdbuf);

extern INT8U SD_ActiveInit(void);

extern INT16U SD_GetSDVer(void);

extern void SD_PackParam(INT8U *parameter, INT32U value);

extern INT8U SD_BlockCommand(INT8U cmd, INT8U resptype, INT32U parameter);

extern INT8U SD_ResetSD(void);

extern INT8U SD_GetCardInfo(void);

#if SD_ReadCID_EN
extern INT8U SD_ReadCID(INT8U cidlen, INT8U *recbuf);
#endif

extern INT8U SD_StopTransmission(void);

extern INT8U SD_ReadCard_Status(INT8U len, INT8U *buffer);

extern INT8U SD_SetBlockLen(INT32U length);

extern INT8U SD_ReadSingleBlock(INT32U blockaddr);

extern INT8U SD_ReadMultipleBlock(INT32U blockaddr);

extern INT8U SD_WriteSingleBlock(INT32U blockaddr);

extern INT8U SD_WriteMultipleBlock(INT32U blockaddr);

#if SD_ProgramCSD_EN
extern INT8U SD_ProgramCSD(INT8U len, INT8U *buff);
extern INT8U SD_GetCRC7(INT8U *pSource, INT16U len);
#endif	

#if SD_EraseBlock_EN
extern INT8U SD_EraseStartBlock(INT32U startblock);
extern INT8U SD_EraseEndBlock(INT32U endblock);
extern INT8U SD_EraseSelectedBlock(void);
extern INT8U SD_EraseBlock(INT32U startaddr, INT32U blocknum);
#endif
	
extern INT8U SD_WaitBusy(INT8U waittype);

extern INT8U SD_ReadOCR(INT8U ocrlen, INT8U *recbuf);

#if SD_CRC_EN
INT8U SD_EnableCRC(INT8U bEnable);
#endif

#if SD_ReadSD_Status_EN
SD_ReadSD_Status(INT8U sdslen, INT8U *recbuf);
#endif


#if SD_WriteMultiBlock_EN
extern INT8U SD_GetNumWRBlcoks(INT32U *blocknum);
#endif

extern INT8U SD_ReadBlockData(INT32U len, INT8U *recbuf);

extern INT8U SD_WriteBlockData(INT8U bmulti, INT32U len, INT8U *sendbuf);

extern void SD_StopMultiToken(void);

extern INT8U SD_ReadBlock(INT32U blockaddr, INT8U *recbuf);

extern INT8U SD_WriteBlock(INT32U blockaddr, INT8U *sendbuf);

extern INT8U SD_Initialize(void);

#if SD_ReadMultiBlock_EN
extern INT8U SD_ReadMultiBlock(INT32U blockaddr, INT32U blocknum, INT8U *recbuf);
#endif

#if SD_WriteMultiBlock_EN
extern INT8U SD_WriteMultiBlock(INT32U blockaddr, INT32U blocknum, INT8U *sendbuf);
#endif



#endif