P1=0xfe;
Delay(10);
IapEraseSector(IAP_ADDRESS);
for(i=0;i<512;i++) //check whether all sector data is ff
{
if(IapReadByte(IAP_ADDRESS+i)!=0xff)
goto error; //if error break
}
P1=0xfc;
Delay(10);
for(i=0;i<512;i++) //program 512 bytes data into data flash
{
IapProgramByte(IAP_ADDRESS+i,(BYTE)i);
}
P1=0xf8;
Delay(10);
for(i=0;i<512;i++)
{
if(IapReadByte(IAP_ADDRESS+i)!=(BYTE)i)
goto Error;
}
P1 = 0xf0;
while(1);
Error:
P1&0x7f;
while(1);
}
/***********************
software delay function
***********************/
void Delay(BYTE n)
{
WORD x;
while(n--)
{
x = 0;
while(++x);
}
}
/**********************
disable ISP/IAP/EEPROM function
make MCU in a safe state
**********************/
void Iapdle()
{
IAP_CONTR = 0; //close IAP function
IAP_CMD = 0; //clear command to stand-by
IAP_TRIG = 0; //clear trigger register
IAP_ADDRH = 0x80; //data ptr point to non-EEPROM area
}
