sd_cmd.h

Atmega64单片机程序（完整工程）

/*--------------File Info-------------------------------------------------------
** 文   件   名:    SD_Cmd.h
** 最后修改日期:    2008.3.28
** 版        本:    V1.0
** 描        述:    sd 卡驱动软件包: SD卡物理层					
**------------------------------------------------------------------------------
** Created   by:    		
** Created date:			
*******************************************************************************/

/********************************************************
SD 卡的相关命令与响应宏定义
********************************************************/
#ifndef __SD_Cmd_h
#define __SD_Cmd_h

/* 命令响应定义 define command's response */
#define R1  1 
#define R1B 2 
#define R2  3 
#define R3  4 

/* R1和R2高字节错误码 R1 and upper byte of R2 error code */
#define MSK_IDLE          0x01 
#define MSK_ERASE_RST     0x02 
#define MSK_ILL_CMD       0x04 
#define MSK_CRC_ERR       0x08 
#define MSK_ERASE_SEQ_ERR 0x10 
#define MSK_ADDR_ERR      0x20 
#define MSK_PARAM_ERR     0x40 

/* R2低字节错误码 lower byte of R2 error code */
#define MSK_TOK_ERROR         0x01 
#define MSK_TOK_CC_ERROR      0x02 
#define MSK_TOK_ECC_FAILED    0x04 
#define MSK_TOK_CC_OUTOFRANGE 0x08 
#define MSK_TOK_CC_LOCKED     0x10 



/* 数据令牌 Data Tokens */
#define SD_TOK_READ_STARTBLOCK    0xFE 
#define SD_TOK_WRITE_STARTBLOCK   0xFE 
#define SD_TOK_READ_STARTBLOCK_M  0xFE 
#define SD_TOK_WRITE_STARTBLOCK_M 0xFC 
#define SD_TOK_STOP_MULTI         0xFD 

/* 数据响应令牌 Data Response Tokens */
//数据响应掩码
//数据被接受
//由于CRC错误而被拒绝
//由于写错误而被拒绝
#define SD_RESP_DATA_MSK          0x0F
#define SD_RESP_DATA_ACCETPTED    0x05
#define SD_RESP_DATA_REJECT_CRC   0x0B
#define SD_RESP_DATA_REJECT_WRITE 0x0D 
/* 等待类型 Wait Type */
//读等待
//写等待
//擦除等待
#define SD_WAIT_READ   0x00
#define SD_WAIT_WRITE  0x01
#define SD_WAIT_ERASE  0x02 

#define SD_READREG_TIMEOUT 8 


/**********************************************

SD卡SPI模式下命令集

**********************************************/

/******************************** 基本命令集 Basic command set ****************/
/* 复位SD 卡 Reset cards to idle state */
#define CMD0 0 
#define CMD0_R R1 

/* 读OCR寄存器 Read the OCR (MMC mode, do not use for SD cards) */
#define CMD1 1 
#define CMD1_R R1 

/* 读CSD寄存器 Card sends the CSD */
#define CMD9 9 
#define CMD9_R R1 

/* 读CID寄存器 Card sends CID */
#define CMD10 10 
#define CMD10_R R1 

/* 停止读多块时的数据传输 Stop a multiple block (stream) read/write operation */
#define CMD12 12 
#define CMD12_R R1B 

/* 读 Card_Status 寄存器 Get the addressed card's status register */
#define CMD13 13 
#define CMD13_R R2 

/***************************** 块读命令集 Block read commands *****************/

/* 设置块的长度 Set the block length */
#define CMD16 16 
#define CMD16_R R1 

/* 读单块 Read a single block */
#define CMD17 17 
#define CMD17_R R1 

/* 读多块,直至主机发送CMD12为止 Read multiple blocks until a CMD12 */
#define CMD18 18 
#define CMD18_R R1 

/***************************** 块写命令集 Block write commands ****************/
/* 写单块 Write a block of the size selected with CMD16 */
#define CMD24 24 
#define CMD24_R R1 

/* 写多块 Multiple block write until a CMD12 */
#define CMD25 25 
#define CMD25_R R1 

/* 写CSD寄存器 Program the programmable bits of the CSD */
#define CMD27 27 
#define CMD27_R R1 

/***************************** 写保护 Write protection ************************/
/* Set the write protection bit of the addressed group */
#define CMD28 28 
#define CMD28_R R1B 

/* Clear the write protection bit of the addressed group */
#define CMD29 29 
#define CMD29_R R1B 

/* Ask the card for the status of the write protection bits */
#define CMD30 30 
#define CMD30_R R1 

/***************************** 擦除命令 Erase commands ************************/
/* 设置擦除块的起始地址 Set the address of the first write block to be erased */
#define CMD32 32 
#define CMD32_R R1 

/* 设置擦除块的终止地址 Set the address of the last write block to be erased */
#define CMD33 33 
#define CMD33_R R1 

/* 擦除所选择的块 Erase the selected write blocks */
#define CMD38 38 
#define CMD38_R R1B 

/***************************** 锁卡命令 Lock Card commands ********************/
/* 设置/复位密码或上锁/解锁卡 Set/reset the password or lock/unlock the card */
#define CMD42 42 
#define CMD42_R R1B 
/* Commands from 42 to 54, not defined here */

/***************************** 应用命令 Application-specific commands *********/
/* 禁止下一个命令为应用命令Flag that the next command is application-specific */
#define CMD55 55 
#define CMD55_R R1 

/* 应用命令的通用I/O  General purpose I/O for application-specific commands */
#define CMD56 56 
#define CMD56_R R1 

/* 读OCR寄存器  Read the OCR (SPI mode only) */
#define CMD58 58 
#define CMD58_R R3 

/* 使能或禁止 CRC Turn CRC on or off */
#define CMD59 59 
#define CMD59_R R1 

/***************************** 应用命令 Application-specific commands *********/
/* 获取 SD Status寄存器 Get the SD card's status */
#define ACMD13 13 
#define ACMD13_R R2 

/* 得到已写入卡中的块的个数 Get the number of written write blocks ) */
#define ACMD22 22 
#define ACMD22_R R1 

/* 在写之前,设置预先擦除的块的个数  */
#define ACMD23 23 
#define ACMD23_R R1 

/* 读取OCR寄存器 Get the card's OCR (SD mode) */
#define ACMD41 41 
#define ACMD41_R R1 

/* 连接/断开CD/DATA[3]引脚上的上拉电阻 */
#define ACMD42 42 
#define ACMD42_R R1 

/* 读取SCR寄存器 Get the SD configuration register */
#define ACMD51 51 
#define ACMD51_R R1 


// 一个SPI命令
INT8U SD_SendCmd(INT8U cmd,INT8U *param,INT8U resptype,INT8U *resp);

// 封装参数 
void SD_PackParam(INT8U *parameter,INT32U value);

// 块命令 
INT8U SD_BlockCommand(INT8U cmd,INT8U resptype,INT32U parameter);

// 复位SD卡
INT8U SD_ResetSD(void);

// 读CSD 
INT8U SD_ReadCSD(INT8U csdlen,INT8U *recbuf);
			
// 读CID	
INT8U SD_ReadCID(INT8U cidlen,INT8U *recbuf);
		
// 停止传输	
INT8U SD_StopTransmission(void);
		
// 读Card Status	
INT8U SD_ReadCard_Status(INT8U len,INT8U *buffer);

// 设置块长度
INT8U SD_SetBlockLen(INT32U length);

// 读单块
INT8U SD_ReadSingleBlock(INT32U blockaddr);

// 读多块
INT8U SD_ReadMultipleBlock(INT32U blockaddr);

// 写单块
INT8U SD_WriteSingleBlock(INT32U blockaddr);

// 写多块 
INT8U SD_WriteMultipleBlock(INT32U blockaddr);

// 写CSD寄存器  
INT8U SD_ProgramCSD(INT8U len,INT8U *buff);
	
// 擦块起始地址
INT8U SD_EraseStartBlock(INT32U startblock);

// 擦块终止地址
INT8U SD_EraseEndBlock(INT32U endblock);

// 擦除所选的块
INT8U SD_EraseSelectedBlock(void);

// 读OCR	
INT8U SD_ReadOCR(INT8U ocrlen,INT8U *recbuf);
		
// 使能CRC校验		enable CRC
INT8U SD_EnableCRC(INT8U bEnable);



// 特殊应用命令

// 读SD_Status  read SD_Status 
INT8U SD_ReadSD_Status(INT8U sdslen,INT8U *recbuf);

// 得到正确写入块数
INT8U SD_GetNumWRBlcoks(INT32U *blocknum);

// 读SCR 		
INT8U SD_ReadSCR(INT8U scrlen,INT8U *recbuf);

// 数据流函数
// 读数据
INT8U SD_ReadRegister(INT32U len,INT8U *recbuf);

// 读块数据
INT8U SD_ReadBlockData(INT32U len,INT8U *recbuf);

// 写块数据
INT8U SD_WriteBlockData(INT8U bmulti,INT32U len,INT8U *sendbuf);


// 其它函数
// 停止多块写令牌
void SD_StopMultiToken(void);

// 忙
INT8U SD_WaitBusy(INT8U waittype);

// 发生SPI时钟
void SD_SPIDelay(INT8U value);


#endif