nfdrv.h

该软件为在sunplus的６１单片机上实现的mp3播放器．里面有完整的源代码．

#ifndef	__NFDRV_h__
#define	__NFDRV_h__
//	write your header here
/************************** Read Command ************************************/
#define NF_READ_A_AREA_CMD           0x00
#define NF_READ_B_AREA_CMD           0x01
#define NF_READ_C_AREA_CMD           0x50
/************************** Read ID Command *********************************/
#define NF_READ_ID_CMD               0x90
#define NF_RESET_CMD                 0xff
/************************** Program command *********************************/
#define NF_SEQUENTIAL_DATA_INPUT_CMD 0x80
#define NF_PAGE_PROGRAM_CMD          0x10
/************************** Erase command ***********************************/
#define NF_BLOCK_ERASE_CMD           0x60
#define NF_BLOCK_ERASE_CONFIRM_CMD   0xD0
/************************** Read Status command *****************************/
#define NF_READ_STATUS_CMD           0x70

#define NF_BUFFER_SIZE              (Byte)(133)

/***************** NF Pins Define *****************************************************/
//#define NF_BLOCK_SIZE		0x4000
#define NF_CLE_ENABLE()		asm("R1=[P_IOA_Buffer]\n\t" "R1|=0x0010\n\t" "[P_IOA_Buffer]=R1")
#define NF_CLE_DISABLE()	asm("R1=[P_IOA_Buffer]\n\t" "R1&=0xffef\n\t" "[P_IOA_Buffer]=R1")

#define NF_ALE_ENABLE()		asm("R1=[P_IOA_Buffer]\n\t" "R1|=0x0020\n\t" "[P_IOA_Buffer]=R1")
#define NF_ALE_DISABLE()	asm("R1=[P_IOA_Buffer]\n\t" "R1&=0xffdf\n\t" "[P_IOA_Buffer]=R1")

#define NF_CHIP_ENABLE()    asm("R1=[P_IOB_Buffer]\n\t" "R1&=0xffef\n\t" "[P_IOB_Buffer]=R1")
#define NF_CHIP_DISABLE()   asm("R1=[P_IOB_Buffer]\n\t" "R1|=0x0010\n\t" "[P_IOB_Buffer]=R1")   

#define NF_WP_OPEN()	    asm("R1=[P_IOB_Buffer]\n\t" "R1&=0x7fff\n\t" "[P_IOB_Buffer]=R1")
#define NF_WP_CLOSE()       asm("R1=[P_IOB_Buffer]\n\t" "R1|=0x8000\n\t" "[P_IOB_Buffer]=R1")

/*_____ D E C L A R A T I O N ______________________________________________*/
void NandFlashInit();
void NF_Reset();
void NF_PageRead(unsigned int wColumnAddr,unsigned long int wRowAddr, unsigned int *wrData);
unsigned int NF_ReadID();
#define NF_STATUS_PE		0x0001
#define NF_STATUS_RB		0x0004
#define NF_STATUS_WP		0x0008
unsigned int NF_EraseBlock(unsigned long int Addr32 );
unsigned int NF_PageProgram(unsigned int wColumnAddr,unsigned long int wRowAddr, unsigned int *wrData);
void NF_ReadMultiByte(unsigned long int dAddr, unsigned int wLen, unsigned int *wrData );
void DMA_NFtoD12(unsigned long int wAddr, unsigned int nbSector);
void DMA_D12toNF(unsigned long int wAddr, unsigned int nbSector);
#endif