How to store a decimal value on eeprom

Projects Programming
1

hello all
I need to store on eeprom a decimal value like 2500.I understand I cant put all this value on a single address since the maximum value is 255.My question is how can I splitt this value to then put in on each eeprom byte address ?

2

You can take two values in the range 0 to 255 to make one value in the range 0 to 65535:

   unsigned char hvalue, lvalue;  // 8-bit values
   unsigned int full; // 16-bit value

   full = hvalue * 256 + lvalue;
3

your code works but I want the oposite.I need to find the hvalue and the lvalue from the final number.I just have the final number and so I need to find which is the hvalue and the lvalue.Did you have some tip?
Thanks for your help

5

There are even helper functions in the Arduino library:

   unsigned char hvalue, lvalue;  // 8-bit values
   unsigned int full; // 16-bit value

   full = word(hvalue, lvalue);
   hvalue = highByte(full);
   lvalue = lowByte(full);