关于N76E003的Flash存储

#include "flash.h" //可加我微信大家一起交流哦 //微信号：18357164389 //不要随意转载哦！ #define Page_Size 128 void Flash_Write_String(const u16 Write_Addr,const u8 *Write_Data,const u16 Write_Len) { u16 xdata i = 0; u8 code *w_addr = NULL; //Flash的写入地址 u16 xdata write_addr = 0; u16 xdata writabledata_size = 0; //当前页可写数据大小 u8 xdata buffer[Page_Size] = {0}; //临时缓存 set_WDCLR; //喂狗 write_addr=Write_Addr/Page_Size*Page_Size; //Page写的起始地址 writabledata_size=Page_Size-(Write_Addr-write_addr); //当前页可写的长度 //读取当前页 w_addr=write_addr; for(i=0; i<Page_Size; i++ ) { buffer[i]= (*w_addr); w_addr++; } //修改当前页 if(writabledata_size>=Write_Len) { for(i=0; i<Write_Len; i++) { buffer[Write_Addr-write_addr+i]=Write_Data[i]; } } else if(writabledata_size<Write_Len) { for(i=0; i<writabledata_size; i++) { buffer[Write_Addr-write_addr+i]=Write_Data[i]; } } //擦除当前页 IAPAH = (write_addr>>8)&0xFF; IAPAL = write_addr&0xFF; IAPFD = 0xFF; set_IAPEN; set_APUEN; IAPCN = 0x22; set_IAPGO; //写入当前页 IAPCN = 0x21; for(i=0; i<Page_Size; i++) { IAPFD=buffer[i]; set_IAPGO; IAPAL++; } clr_APUEN; clr_IAPEN; write_addr+=Page_Size; if(writabledata_size<Write_Len) //若是一页不够写 { u8 j=0; u8 write_number=(Write_Len-writabledata_size)/Page_Size; //还需写多少页 u8 residual_data_size=(Write_Len-writabledata_size)%Page_Size; //剩余数据的大小 for(j=0; j<write_number; j++) { for(i=0; i<Page_Size; i++) { buffer[i]=Write_Data[writabledata_size+j*Page_Size+i]; } IAPAH = (write_addr>>8)&0xFF; IAPAL = write_addr&0xFF; IAPFD = 0xFF; set_IAPEN; set_APUEN; IAPCN = 0x22; set_IAPGO; IAPCN = 0x21; for(i=0; i<Page_Size; i++) { IAPFD=buffer[i]; set_IAPGO; IAPAL++; } clr_APUEN; clr_IAPEN; write_addr+=Page_Size; } w_addr=write_addr; for(i=0; i<Page_Size; i++ ) { buffer[i]= (*w_addr); w_addr++; } for(i=0; i<residual_data_size; i++) { buffer[i]=Write_Data[writabledata_size+j*Page_Size+i]; } IAPAH = (write_addr>>8)&0xFF; IAPAL = write_addr&0xFF; IAPFD = 0xFF; set_IAPEN; set_APUEN; IAPCN = 0x22; set_IAPGO; IAPCN = 0x21; for(i=0; i<Page_Size; i++) { IAPFD=buffer[i]; set_IAPGO; IAPAL++; } clr_APUEN; clr_IAPEN; write_addr+=Page_Size; } set_WDCLR; //喂狗 } void Flash_Read_String(const u16 Read_Addr,u8 * Read_Data,const u16 Read_Len) { u8 code *r_addr = NULL; //Flash的写入地址 u16 xdata i=0; r_addr=Read_Addr; for(i=0; i<Read_Len; i++) { Read_Data[i]= *r_addr; r_addr++; } }