sd_cmd.h

SD卡与ARM7在SPI模式下进行数据读写原代码

/************************************************************************************/
/*																					*/
/*	Copyright (C) 2004 Medeli Electric Industry	Co., LTD.							*/
/*																					*/
/*	System Name	:	IC-1000															*/
/*	File   Name	:	sd_cmd.h														*/
/*	Revision	:	1.00															*/
/*	Date		:	2006/4/10														*/
/*					Initial	version													*/
/*					Joe's work														*/
/************************************************************************************/
#ifndef	SD_CMD_H
#define	SD_CMD_H

#ifdef __cplusplus
extern "C" {
#endif

/********************************Includs***************************************/
/*******************************Constants**************************************/

/********************************************************/
/*		SD 卡的相关命令与响应宏定义						*/
/********************************************************/
typedef	enum
{/* 命令响应定义	define command's response */
	R1,
	R1B,
	R2,
	R3,
	SD_ALL_RESPONSES
}SD_RESPONSE_TYPES;

typedef	enum
{/* R1和R2高字节错误码 R1 and upper byte of R2 error code */
	B_MSK_IDLE					=0x01,
	B_MSK_ERASE_RST				=0x02,
	B_MSK_ILL_CMD				=0x04,
	B_MSK_CRC_ERR				=0x08,
	B_MSK_ERASE_SEQ_ERR			=0x10,
	B_MSK_ADDR_ERR				=0x20,
	B_MSK_PARAM_ERR				=0x40
}SD_R1_R2_HI_ERR_BIT;

typedef	enum
{/* R2低字节错误码 lower byte of R2 error code */
	B_MSK_TOK_ERROR				=0x01,
	B_MSK_TOK_CC_ERROR			=0x02,
	B_MSK_TOK_ECC_FAILED		=0x04,
	B_MSK_TOK_CC_OUTOFRANGE		=0x08,
	B_MSK_TOK_CC_LOCKED			=0x10
}SD_R2_LOW_ERR_BIT;


/* 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 */
#define	SD_RESP_DATA_MSK			(0x0F)	/* data response mask 数据响应掩码 */
#define	SD_RESP_DATA_ACCETPTED		(0x05)	/* data accepted 数据被接受 */
#define	SD_RESP_DATA_REJECT_CRC		(0x0B)	/* data rejected due to a CRC error由于CRC错误而被拒绝 */
#define	SD_RESP_DATA_REJECT_WRITE	(0x0D)	/* data rejected due to a write error 由于写错误而被拒绝 */

/* 等待类型 Wait Type */
#define SD_WAIT_READ				(0x00)	/* 读等待 */
#define SD_WAIT_WRITE				(0x01)	/* 写等待 */
#define SD_WAIT_ERASE				(0x02)	/* 擦除等待 */

#define	SD_READREG_TIMEOUT			(8)
/********************************************************/
/*		SD 卡的相关命令与响应宏定义						*/
/********************************************************/
typedef enum
{
	/****************************************************************************************/
	/*							基本命令集 Basic command set								*/
	/****************************************************************************************/
	CMD0	/*=0*/,		/* 复位SD 卡 Reset cards to idle state */
	CMD1	/*=1*/,		/* 读OCR寄存器 Read the OCR (MMC mode, do not use for SD cards) */
	CMD9	/*=9*/,		/* 读CSD寄存器 Card	sends the CSD */
	CMD10	/*=10*/,	/* 读CID寄存器 Card	sends CID */
	CMD12	/*=12*/,	/* 停止读多块时的数据传输 Stop a multiple block	(stream) read/write	operation */
	CMD13	/*=13*/,	/* 读 Card_Status 寄存器 Get the addressed card's status register */
	/****************************************************************************************/
	/*							块读命令集 Block read commands								*/
	/****************************************************************************************/
	CMD16	/*=16*/,	/* 设置块的长度	Set	the	block length */
	CMD17	/*=17*/,	/* 读单块 Read a single	block */
	CMD18	/*=18*/,	/* 读多块,直至主机发送CMD12为止	Read multiple blocks until a CMD12 */
	/****************************************************************************************/
	/*							块写命令集 Block write commands								*/
	/****************************************************************************************/
	CMD24	/*=24*/,	/* 写单块 Write	a block	of the size	selected with CMD16	*/
	CMD25	/*=25*/,	/* 写多块 Multiple block write until a CMD12 */
	CMD27	/*=27*/,	/* 写CSD寄存器 Program the programmable	bits of	the	CSD	*/
	/****************************************************************************************/
	/*								写保护 Write protection									*/
	/****************************************************************************************/
	CMD28	/*=28*/,	/* Set the write protection	bit	of the addressed group */
	CMD29	/*=29*/,	/* Clear the write protection bit of the addressed group */
	CMD30	/*=30*/,	/* Ask the card	for	the	status of the write	protection bits	*/
	/****************************************************************************************/
	/*								擦除命令 Erase commands									*/
	/****************************************************************************************/
	CMD32	/*=32*/,	/* 设置擦除块的起始地址	Set	the	address	of the first write block to	be erased */
	CMD33	/*=33*/,	/* 设置擦除块的终止地址	Set	the	address	of the last	write block	to be erased */
	CMD38	/*=38*/,	/* 擦除所选择的块 Erase	the	selected write blocks */
	/****************************************************************************************/
	/*							锁卡命令	Lock Card commands								*/
	/****************************************************************************************/
	CMD42	/*=42*/,	/* 设置/复位密码或上锁/解锁卡 Set/reset	the	password or	lock/unlock	the	card */
	/****************************************************************************************/
	/*						应用命令	Application-specific commands						*/
	/****************************************************************************************/
	CMD55	/*=55*/,	/* 标志下一个命令为应用命令	 Flag that the next	command	is application-specific	*/
	CMD56	/*=56*/,	/* 应用命令的通用I/O  General purpose I/O for application-specific commands	*/
	CMD58	/*=58*/,	/* 读OCR寄存器	Read the OCR (SPI mode only) */
	CMD59	/*=59*/,	/* 使能或禁止 CRC Turn CRC on or off */
	SD_SPI_ALL_GEN_CMD
}SD_SPI_COMMAND;

typedef struct
{
	UBYTE com;
	SD_RESPONSE_TYPES rsp;
}SD_COMMAND_STRUCT;


/****************************************************************************************/
/*						应用命令	Application-specific command						*/
/****************************************************************************************/
typedef enum
{
	ACMD13	/*=13*/,	/* 获取	SD Status寄存器	Get	the	SD card's status */
	ACMD22	/*=22*/,	/* 得到已写入卡中的块的个数	Get	the	number of written write	blocks (Minus errors ) */
	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 */
	ACMD41	/*=41*/,	/* 读取OCR寄存器 Get the card's	OCR	(SD	mode) */
	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] */
	ACMD51	/*=51*/,	/* 读取SCR寄存器 Get the SD	configuration register */
	SD_SPI_ALL_APP_CMD
}SD_SPI_APP_COMMAND;

/*********************************Enums****************************************/
/********************************Marcros***************************************/
/*******************************Structures*************************************/
/********************************Specials**************************************/
/**************************Variable	Declaration********************************/
/**************************Function	Declaration********************************/
/**************************End of sd_command.h*********************************/
#ifdef __cplusplus
};		/* End of 'extern "C"' */
#endif
#endif	/* End of sd_command.h */