Hi,
I have written code for EEPROM of the AT89C51ED2., the code is not working , i have used the instructions as given in the DataSheet, I have tried many times but still I am facing problem, If there any suggestion, I would like to know from Keil,
EEPROM CODE.,
void WriteE2ROM(unsigned char xdata *Addr,unsigned long e_data); long ReadE2ROM(unsigned char xdata *Addr); /*EEPROM WRITE CODE */ void WriteE2ROM(unsigned char xdata *Addr,unsigned long e_data) { unsigned char FBuffer[35]; signed char i=-1; sprintf(FBuffer,"%ld",e_data); do { i++; // WRITE while(BUSY); EA=0; E_EEPROM; *(Addr+i) = FBuffer[i]; D_EEPROM; EA=1; }while(FBuffer[i]!='\0'); } /*EEPROM READ CODE */ long ReadE2ROM(unsigned char xdata *Addr) { unsigned char EBuffer[35]; // unsigned long FData; unsigned char idata i=0; while(BUSY); EA=0; E_EEPROM; while(*(Addr+i)!='\0' && i<32) { EBuffer[i] = *(Addr+i); // READ i++; } D_EEPROM; EA=1; EBuffer[i]='\0'; READEEPROM=atol(EBuffer); // return FData; }