Saving data to eeprom

Does anyone know how to store data to EEPROM?
I am currenly using PIC18F2620.

Have a read of this thread.

Mike.

Thank for the reply.
Actually, i know how is the routine like to write and read to eeprom. My problem is that i dunnno how to implement it. I suppose to store the calibration value of light sensor to the eeprom so that my main program will know it when my device is first power up. I just don't understand how is the things work from saving the value and read the value.

Here is the example of what have my friend done:

# define FCIN_ADDR 0x00

result= ReadEeprom(FCIN_ADDR);
result<<=8; // i dun understand why must it shift by 8
tem=ReadEeprom(FCIN_ADDR+1);// why must it increment by1
result+=tem;

Regards

Why not ask your friend?

apricot_star said:

Thank for the reply.
Actually, i know how is the routine like to write and read to eeprom. My problem is that i dunnno how to implement it. I suppose to store the calibration value of light sensor to the eeprom so that my main program will know it when my device is first power up. I just don't understand how is the things work from saving the value and read the value.

Here is the example of what have my friend done:

# define FCIN_ADDR 0x00


//Reads the high byte and shifts it 8 to put it in the high byte of results.
result= ReadEeprom(FCIN_ADDR);
result<<=8;
// Read low byte and add it to the result which contains the high byte
tem=ReadEeprom(FCIN_ADDR+1);// why must it increment by1
result+=tem;

Regards

Click to expand...

The above code reads a 16 bit value from the EEPROM 8 bits at a time.

Given that you did not understand what the <<= operator was you either need
to learn C or have you friend help you.

Thanks, i got it now =)