nand.h

arm7 的音乐播放程序

#include "option.h"
#include "def.h"
#include "44b.h"
#include "44blib.h"
///////////

/////
#define NAND_FLASH_16M

#define NAND_DAT    0x02000000
#define NAND_CLE    0x02000002
#define NAND_ALE    0x02000004

#define	NFWrCmd(cmd)	*(volatile U8 *)NAND_CLE = (cmd)
#define	NFWrAddr(addr)	*(volatile U8 *)NAND_ALE = (addr)
#define	NFWrDat(dat)	*(volatile U8 *)NAND_DAT = (dat)
#define	NFRdDat()		*(volatile U8 *)NAND_DAT
////////////////

#define	READCMD0	0
#define	READCMD1	1
#define	READCMD2	0x50
#define	ERASECMD0	0x60
#define	ERASECMD1	0xd0
#define	PROGCMD0	0x80
#define	PROGCMD1	0x10
#define	QUERYCMD	0x70
#define	READIDCMD	0x90

//////////
#define NFEnable(void)  {rPDATC &= 0xFDFF;}		//~CE(GPC9) enable
#define NFDisable(void) {rPDATC |= 0x1<<9;}		

#define NFIsReady(void)    ((rPDATC>>8)|0x1)	//R or ~B
#define NFIsBusy(void)     !NFIsReady()

#define	NFWrCmd(cmd)	*(volatile U8 *)NAND_CLE = (cmd)
#define	NFWrAddr(addr)	*(volatile U8 *)NAND_ALE = (addr)
#define	NFWrDat(dat)	*(volatile U8 *)NAND_DAT = (dat)
#define	NFRdDat()		*(volatile U8 *)NAND_DAT

//////////
U8 NFWaitBusy(void);
U32 NFReadID(void);
void NandFlashInit(void);
U8 NFReadStat(void);
U8 NFEraseBlock(U32 uiBlockAdd);
void NFReadPage(const U32 uiPageAddr,U8 *pcDst);
U8 NFWritePage( const U32 uiPageAddr,const U8 *pcSrc );
U8 NFChkBadBlk( U32 uiBlockAddr );