nand.h

ucCos移植到广州友善nano2410

#ifndef _NAND_FLASH_H
#define _NAND_FLASH_H

#define TACLS		0  //1clk(0ns) 
#define TWRPH0		3  //3clk(25ns)
#define TWRPH1		0  //1clk(10ns)  //TACLS+TWRPH0+TWRPH1>=50ns

#define NF_CMD(cmd)	{rNFCMD=cmd;} //send command
#define NF_ADDR(addr)	{rNFADDR=addr;} //set address
#define NF_nFCE_L()	{rNFCONF&=~(1<<11);} //NAND Flash Memory chip enable
#define NF_nFCE_H()	{rNFCONF|=(1<<11);} //NAND Flash Memory chip disable
#define NF_RSTECC()	{rNFCONF|=(1<<12);} //Initialize ECC
#define NF_RDDATA()	(rNFDATA) //read data
#define NF_WRDATA(data)	{rNFDATA=data;} //write data
#define NF_WAITRB()	{while(!(rNFSTAT&(1)));} //get status

unsigned short nf_checkId(void);
static void nf_reset(void);
void nf_init(void);
void nf_read(unsigned int src_addr,unsigned  char *desc_addr,int size);

#endif