www.pudn.com > flashfat16.rar > FLASH.C
#include#include #include #include "flash.h" #include "44b.h" #include "def.h" #include "44blib.h" /* PC7 6 5 4 3 2 1 0 */ /* I I I I I I I I */ /* NC NC NC NC SMCALE SMCCLE SMCCE SMCRB*/ /* 00 00 00 00 01 01 01 00 */ extern void __RdPage528(U8 *); /*these two function are writed in ASM*/ extern void __WrPage528(U8 *); U8 Verify_Buf[528]; unsigned int Check_Flash_Id(void) { int i; unsigned int id; FC_CMD; Nand_IO = 0x90; FC_ADDR; Nand_IO = 0; FC_DATA; for(i=0;i<10;i++); //wait 100ns id = Nand_IO<<8; id += Nand_IO; FC_INACTIVE; return id; } void Flash_Reset() //flash reset { int i; // rPDATC = rPDATC | WP; //write unprotect FC_CMD; Nand_IO = 0xff; //reset command for (i=0;i<3000;i++); //delay } /********************************************************/ /*功能：擦除FLASH的1Block(对应文件系统为1Cluster) */ /* 每一个簇为16KB，因此KM29U128共有1024个簇 */ /*输入：unsigned int cluster/block(需要擦除的Block Number)*/ /*返回：OK或FAIL */ /********************************************************/ unsigned char Erase_Cluster(unsigned int cluster) { unsigned int blockPage = (cluster<<5); int i; FC_CMD; Nand_IO = 0x60; FC_ADDR; Nand_IO = blockPage & 0xff; Nand_IO = (blockPage>>8) & 0xff; for(i=0;i<2;i++); //tWC 50ns FC_CMD; Nand_IO = 0xd0; for(i=0;i<3;i++); FC_DATA; WAITRB; //wait max 3ms FC_CMD; Nand_IO = 0x70; FC_DATA; if (Nand_IO & 0x1) //erase error { FC_INACTIVE; return FAIL; } else { FC_INACTIVE; return OK; } } /********************************************************/ int VerifyPage(unsigned int block,unsigned int page,U8 *buffer) { ReadPage(block,page,Verify_Buf); if(strncmp((char *)Verify_Buf,(char *)buffer,528)==0) return 1; else return 0; } /*****************************************************************/ /*功能：读取FLASH的某个Block中的1page数据 */ /* 在文件系统中，有如下对应关系：Block=Cluster */ /* Page =Sector */ /*输入：unsigned int block,page,unsigned char *pPage(存放数据的地址)*/ /*****************************************************************/ void ReadPage(unsigned int block,unsigned int page,unsigned char *pPage) { int i; unsigned int blockPage = (block<<5) + page; FC_CMD; Nand_IO = 0x00; FC_ADDR; Nand_IO = 0; Nand_IO = blockPage & 0xff; Nand_IO = (blockPage>>8) & 0xff; for(i=0;i<3;i++); FC_DATA; WAITRB; //random access ,wait max. 10us for(i=0;i<528;i++) {*pPage++=Nand_IO;} //data input->as the same as _WrPage528() // __RdPage528(pPage); //which is written with assemble in flash.s FC_INACTIVE; } /*****************************************************************/ /*功能：向FLASH的某个Block中的1page写入数据 */ /* 在文件系统中，有如下对应关系：Block=Cluster */ /* Page =Sector */ /*输入：unsigned int block,page,unsigned char *pPage(存放数据的地址)*/ /*输出：0:Fail;1:OK */ /*****************************************************************/ int WritePage(unsigned int block,unsigned int page,unsigned char *pPage) { unsigned int blockPage = (block<<5) + page; int i; U8 *Source; //the begin addr of data to write Source=pPage; FC_CMD; Nand_IO = 0x80; FC_ADDR; Nand_IO = 0; Nand_IO = blockPage & 0xff; Nand_IO = (blockPage>>8) & 0xff; FC_DATA; for(i=0;i<528;i++) {Nand_IO=*pPage++;} //data input->as the same as _WrPage528() // __WrPage528(pPage); //which is written with assemble in flash.s FC_CMD; Nand_IO = 0x10; for(i=0;i<10;i++); //twb=100ns. why is it 10? spec is false? //No. It's because of LED of PE1. WAITRB; //wait max 500us; Nand_IO = 0x70; FC_DATA; for(i=0;i<3;i++); //twhr=60ns if((Nand_IO & 0x1)) // { FC_INACTIVE; return 0; } else { FC_INACTIVE; pPage = Source; #if (WRITEVERIFY==1) return VerifyPage(block,page,pPage); #else return 1; #endif } } /*******************************************************************/ /*功能：显示FLASH的数据 */ /* 整个16MBFLASH空间的划分如下： */ /* Root：Cluster0 */ /* Application：Cluster1~1023 */ /********************************************************************/ void Flash_Tools(void) { unsigned char bbb[528]; unsigned int i,sector,cluster; Flash_Reset(); if(Check_Flash_Id()==KM29U128_ID) { i = 0; sector = 0; cluster = 0; Uart_Printf("\n* R(r)>>Point to Root zone(Cluster0) *"); Uart_Printf("\n* A(a)>>Point to Application zone(Cluster1~1023) *"); Uart_Printf("\n* C(c)>>Point to Next Cluster *"); Uart_Printf("\n* S(s)>>Point to Next Sector *"); Uart_Printf("\n* Q(q)>>Quit *"); Uart_Printf("\n*-----------------------------------------------------------------------*"); //Uart_Printf("\n*---------------------Boot Zone at Cluster %4d, Sector %2d--------------*",cluster,sector); while(1) { char aa; aa = Uart_Getch(); if (aa == 'q' || aa=='Q') break; /***** ReadPage(cluster,sector,&(bbb[0])); Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector); for(i=0;i<528;i=i+16) { Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\ i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\ bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]); } ****/ //sector++; if (sector>=32)//goto next cluster { cluster++; sector = 0; } //aa = Uart_Getch(); //if (aa == 'q' || aa=='Q') break; switch(aa) { case 'r': case 'R': cluster = 0; sector = 0; Uart_Printf("\n*---------------------Root Zone at Cluster %4d, Sector %2d--------------*",cluster,sector); ReadPage(cluster,sector,&(bbb[0])); for(i=0;i<528;i=i+16) { Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\ i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\ bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]); } Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector); break; case 'a': case 'A': cluster = 1; sector = 0; Uart_Printf("\n*---------------------Application Zone at Cluster %4d, Sector %2d-------*",cluster,sector); ReadPage(cluster,sector,&(bbb[0])); for(i=0;i<528;i=i+16) { Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\ i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\ bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]); } Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector); break; case 'c': case 'C': cluster ++; if (cluster>=1024) cluster = 0; sector = 0; Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector); ReadPage(cluster,sector,&(bbb[0])); for(i=0;i<528;i=i+16) { Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\ i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\ bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]); } Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector); break; case 's': case 'S': sector++; if (sector>=32) { sector = 0; cluster ++; if (cluster>=1024) sector = 0; } Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector); ReadPage(cluster,sector,&(bbb[0])); for(i=0;i<528;i=i+16) { Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\ i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\ bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]); } Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector); break; default: Uart_Printf("\n* R(r)>>Point to Root zone(Cluster0) *"); Uart_Printf("\n* A(a)>>Point to Application zone(Cluster1~1023) *"); Uart_Printf("\n* C(c)>>Point to Next Cluster *"); Uart_Printf("\n* S(s)>>Point to Next Sector *"); Uart_Printf("\n* Q(q)>>Quit *"); Uart_Printf("\n*-----------------------------------------------------------------------*"); //Uart_Printf("\n*---------------------Boot Zone at Cluster %4d, Sector %2d--------------*",cluster,sector); break; } } } else { Uart_Printf("\n* K9F2808 No Found.Please check your hardware! *"); Uart_Printf("\n*-----------------------------------------------------------------------*"); } }