?? flash.c
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#include <stdio.h>#include <stdlib.h>#include <string.h>#include "..\inc\drv\flash.h"#include "..\startup\44b.h"#include "..\inc\def.h"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; rKM29UXDATA = 0x90; FC_ADDR; rKM29UXDATA = 0; FC_DATA; for(i=0;i<10;i++); //wait 100ns id = rKM29UXDATA<<8; id += rKM29UXDATA; FC_INACTIVE; return id;}void Flash_Reset() //flash reset{ int i; // rPDATC = rPDATC | WP; //write unprotect FC_CMD; rKM29UXDATA = 0xff; //reset command for (i=0;i<3000;i++); //delay }/********************************************************//*功能：擦除FLASH的1Block(對應文件系統為1Cluster) *//* 每一個簇為16KB，因此KM29U128共有1024個簇 *//*輸入：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; rKM29UXDATA = 0x60; FC_ADDR; rKM29UXDATA = blockPage & 0xff; rKM29UXDATA = (blockPage>>8) & 0xff; for(i=0;i<2;i++); //tWC 50ns FC_CMD; rKM29UXDATA = 0xd0; for(i=0;i<3;i++); FC_DATA; WAITRB; //wait max 3ms FC_CMD; rKM29UXDATA = 0x70; FC_DATA; if (rKM29UXDATA & 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：讀取FLASH的某個Block中的1page數據 *//* 在文件系統中，有如下對應關系：Block=Cluster *//* Page =Sector *//*輸入：unsigned int block,page,unsigned char *pPage(存放數據的地址)*//*****************************************************************/void ReadPage(unsigned int block,unsigned int page,unsigned char *pPage){ int i; unsigned int blockPage = (block<<5) + page; FC_CMD; rKM29UXDATA = 0x00; FC_ADDR; rKM29UXDATA = 0; rKM29UXDATA = blockPage & 0xff; rKM29UXDATA = (blockPage>>8) & 0xff; for(i=0;i<3;i++); FC_DATA; WAITRB; //random access ,wait max. 10us __RdPage528(pPage); //which is written with assemble in flash.s FC_INACTIVE;}/*****************************************************************//*功能：向FLASH的某個Block中的1page寫入數據 *//* 在文件系統中，有如下對應關系：Block=Cluster *//* Page =Sector *//*輸入：unsigned int block,page,unsigned char *pPage(存放數據的地址)*//*輸出：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; rKM29UXDATA = 0x80; FC_ADDR; rKM29UXDATA = 0; rKM29UXDATA = blockPage & 0xff; rKM29UXDATA = (blockPage>>8) & 0xff; FC_DATA; for(i=0;i<528;i++) {rKM29UXDATA=*pPage++;} //data input->as the same as _WrPage528() __WrPage528(pPage); //which is written with assemble in flash.s FC_CMD; rKM29UXDATA = 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; rKM29UXDATA = 0x70; FC_DATA; for(i=0;i<3;i++); //twhr=60ns if((rKM29UXDATA & 0x1)) // 注銷掉的程序行有問題,會導致堆棧出錯!!!戎海峰 { FC_INACTIVE; return 0; } else { FC_INACTIVE; #if (WRITEVERIFY==1) return VerifyPage(block,page,pPage); #else return 1; #endif }}/*******************************************************************//*功能：顯示FLASH的數據 *//* 整個16MBFLASH空間的劃分如下： *//* 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; 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); break; case 'a': case 'A': cluster = 1; sector = 0; Uart_Printf("\n*---------------------Application Zone at 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); 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); break; default: break; } } } else { Uart_Printf("\n* KM29U128T No Found.Please check your hardware! *"); Uart_Printf("\n*-----------------------------------------------------------------------*"); }}?? 快捷鍵說明
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