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wangshenbo 发表于 2013-1-17 15:39
#define NEED_EXT_ADDR 1 ????是这个吗
我刚开始学arm!对nand不太了解!
#ifndef __NAND_H
#define __NAND_H
#define NUM_BLOCKS 0x1000 // 64 MB Smartmedia card.
#define SECTOR_SIZE 512
#define SPARE_SIZE 16
#define PAGES_PER_BLOCK 32
// For flash chip that is bigger than 32 MB, we need to have 4 step address
//
#define NFCONF_INIT 0xF830 // 512-byte 4 Step Address
#define NEED_EXT_ADDR 1
//#define NFCONF_INIT 0xA830 // 256-byte 4 Step Address
//#define NEED_EXT_ADDR 0
//#define NFCONF_INIT 0xF840
// NAND Flash Command. This appears to be generic across all NAND flash chips
#define CMD_READ 0x00 // Read
#define CMD_READ1 0x01 // Read1
#define CMD_READ2 0x50 // Read2
#define CMD_READ3 0x30 // Read3
#define CMD_READID 0x90 // ReadID
#define CMD_WRITE1 0x80 // Write phase 1
#define CMD_WRITE2 0x10 // Write phase 2
#define CMD_ERASE1 0x60 // Erase phase 1
#define CMD_ERASE2 0xd0 // Erase phase 2
#define CMD_STATUS 0x70 // Status read
#define CMD_RESET 0xff // Reset
// Status bit pattern
#define STATUS_READY 0x40 // Ready
#define STATUS_ERROR 0x01 // Error
// Status bit pattern
#define STATUS_READY 0x40
#define STATUS_ERROR 0x01
#define NF_CMD(cmd) {rNFCMD = (cmd); }
#define NF_ADDR(addr) {rNFADDR = (addr); }
#define NF_nFCE_L() {rNFCONT &= ~(1<<1); }
#define NF_nFCE_H() {rNFCONT |= (1<<1); }
#define NF_RSTECC() {rNFCONT |= (1<<4); }
#define NF_RDMECC() (rNFMECC0 )
#define NF_RDSECC() (rNFSECC )
#define NF_RDDATA() (rNFDATA)
#define NF_RDDATA8() (rNFDATA8)
#define NF_WRDATA(data) {rNFDATA = (data); }
#define NF_WAITRB() {while(!(rNFSTAT&(1<<0)));}
#define NF_CLEAR_RB() {rNFSTAT |= (1<<2); }
#define NF_DETECT_RB() {while(!(rNFSTAT&(1<<2)));}
#define NF_MECC_UnLock() {rNFCONT &= ~(1<<5); }
#define NF_MECC_Lock() {rNFCONT |= (1<<5); }
#define NF_SECC_UnLock() {rNFCONT &= ~(1<<6); }
#define NF_SECC_Lock() {rNFCONT |= (1<<6); }
#define RdNFDat8() (rNFDATA8) //byte access
#define RdNFDat() RdNFDat8() //for 8 bit nand flash, use byte access
#define WrNFDat8(dat) (rNFDATA8 = (dat)) //byte access
#define WrNFDat(dat) WrNFDat8() //for 8 bit nand flash, use byte access
#define pNFCONF rNFCONF
#define pNFCMD rNFCMD
#define pNFADDR rNFADDR
#define pNFDATA rNFDATA
#define pNFSTAT rNFSTAT
#define pNFECC rNFECC0
#define NF_CE_L() NF_nFCE_L()
#define NF_CE_H() NF_nFCE_H()
#define NF_DATA_R() rNFDATA
#define NF_ECC() rNFECC0
// HCLK=100Mhz
#define TACLS 1 // 1-clk(0ns)
#define TWRPH0 4 // 3-clk(25ns)
#define TWRPH1 0 // 1-clk(10ns) //TACLS+TWRPH0+TWRPH1>=50ns
#endif /*__NAND_H*/
这是nand.h,所有的数据定义都在这了!帮帮忙,到底改哪个啊? |
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