sdmmc.h

用PIC24F128GA006做的CF与TFT液晶演示

/******************************************************************************
 *
 *       PIC18 C18 Secure Digital and Multimedia Cards Interface
 *
 ******************************************************************************
 * FileName:        sdmmc.h
 * Dependencies:    GenericTypeDefs.h
 *					_fat.def
 *					_FATDefs.h
 * Processor:       PIC18
 * Compiler:        C18
 * Company:         Microchip Technology, Inc.
 *
 * Software License Agreement
 *
 * The software supplied herewith by Microchip Technology Incorporated
 * (the 揅ompany? for its PICmicro?Microcontroller is intended and
 * supplied to you, the Company抯 customer, for use solely and
 * exclusively on Microchip PICmicro Microcontroller products. The
 * software is owned by the Company and/or its supplier, and is
 * protected under applicable copyright laws. All rights are reserved.
 * Any use in violation of the foregoing restrictions may subject the
 * user to criminal sanctions under applicable laws, as well as to
 * civil liability for the breach of the terms and conditions of this
 * license.
 *
 * THIS SOFTWARE IS PROVIDED IN AN 揂S IS?CONDITION. NO WARRANTIES,
 * WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED
 * TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. THE COMPANY SHALL NOT,
 * IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR
 * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
 *
*****************************************************************************/

#ifndef SDMMC_H
#define	SDMMC_H

#include "GenericTypeDefs.h"
#include "_fat.def"
#include "_FATDefs.h"

#define FALSE	0
#define TRUE	1


#ifdef USE_PIC18
	#if defined(FAT_MEDIA_IF_SPI)
		#define SPICON					SSPCON1
		#define SPISTAT					SSPSTAT
		#define SPIBUF					SSPBUF
		#define SPISTAT_RBF				SSPSTATbits.BF
	
	#elif defined(FAT_MEDIA_IF_SPI1)
		#define SPICON					SSP1CON1
		#define SPISTAT					SSP1STAT
		#define SPIBUF					SSP1BUF
		#define SPISTAT_RBF				SSPSTATbits.BF
	
	#elif defined(FAT_MEDIA_IF_SPI2)
		#define SPICON					SSP2CON
		#define SPISTAT					SSP2STAT
		#define SPIBUF					SSP2BUF
		#define SPISTAT_RBF				SSPSTATbits.BF
	#else
		#error Media SPI port is not defined. See "FAT_MEDIA_IF_XXX" define in fat.def
	#endif
#else
	#if defined(FAT_MEDIA_IF_SPI)
		#define SPICON					SPICON1
		#define SPISTAT					SPISTAT
		#define SPIBUF					SPIBUF
		#define SPISTAT_RBF				SPISTATbits.SPIRBF
	
	#elif defined(FAT_MEDIA_IF_SPI1)
		#ifdef USE_PIC30
			#define SPICON	SPI1CON
		#else
			#define SPICON					SPI1CON1
		#endif
		#define SPISTAT					SPI1STAT
		#define SPIBUF					SPI1BUF
		#define SPISTAT_RBF				SPI1STATbits.SPIRBF
	
	#elif defined(FAT_MEDIA_IF_SPI2)
		#define SPICON					SPI2CON
		#define SPISTAT					SPI2STAT
		#define SPIBUF					SPI2BUF
		#define SPISTAT_RBF				SPISTAT2bits.SPIRBF
	#else
		#error Media SPI port is not defined. See "FAT_MEDIA_IF_XXX" define in fat.def
	#endif
#endif

#define MEDIA_SECTOR_SIZE 		512

#define INPUT	1
#define OUTPUT	0

#define low(num) (num & 0xFF)
#define high(num) ((num >> 8) & 0xFF)
#define upper(num) ((num >> 16) & 0xFF)

#ifdef USE_PIC18
	#define CLKSPERINSTRUCTION (BYTE) 4
#else
	#define CLKSPERINSTRUCTION (BYTE) 2
#endif
#define TMR1PRESCALER	(BYTE)    8
#define TMR1OVERHEAD	(BYTE)    5	
#define MILLISECDELAY   (WORD)((SYSTEM_CLOCK/CLKSPERINSTRUCTION/TMR1PRESCALER/(WORD)1000) - TMR1OVERHEAD)
#define B115K26MHZ      0x0C        // = 115.2K baud @26MHz

#define SD_CMD_IDLE				0
#define SD_CMD_SEND_OP_COND		1
#define SD_CMD_SET_BLOCK_LEN	16
#define SD_CMD_READ_BLOCK		17
#define SD_CMD_WRITE_BLOCK		24

#define SD_CARD_SYSTEM		// Does this mean we are supporting more than one cards? - NR

typedef enum
{
	GO_IDLE_STATE,
	SEND_OP_COND,
	SEND_CSD,
	SEND_CID,
	STOP_TRANSMISSION,
	SEND_STATUS,
	SET_BLOCKLEN,
	READ_SINGLE_BLOCK,
	READ_MULTI_BLOCK,
	WRITE_SINGLE_BLOCK,
	WRITE_MULTI_BLOCK,
	TAG_SECTOR_START,
	TAG_SECTOR_END,
	UNTAG_SECTOR,
	TAG_ERASE_GRP_START,
	TAG_ERASE_GRP_END,
	UNTAG_ERASE_GRP,
	ERASE,
	LOCK_UNLOCK,
	SD_APP_OP_COND,
	APP_CMD,
	READ_OCR,
	CRC_ON_OFF
}sdmmc_cmd;




BYTE MediaInit(void);
#define MediaIsPresent()			(!SD_CD)
#define MediaIsWriteProtected()		(SD_WE)
BYTE MediaDetect(void);
BYTE MediaInitialize(void);
BYTE SECTORread(DWORD sector_addr, BYTE* buffer);
BYTE SECTORwrite(DWORD sector_addr, BYTE* buffer);
extern BYTE gblSDMMCBuf[];
extern BYTE FATBuffer[];
extern DISK glbDiskData;
BYTE MediaDetect(void);
BYTE WriteProtectState(void);
void ShutdownMedia(void);

#endif