EEPROM.write vs EEPROM.update

Projects Programming
1

I was just wondering what the difference between these to is?
I tried googling but couldn't find anything.

EEPROM.write vs EEPROM.update

2

update checks first if the value needs to change, so it does a read and if your value is different then it writes it.

this is because you can only write ~100,000 times into EEPROM and then your cell is likely dead (it wears out), so it's not a good idea to write when the value is the same.

3

okay,
thanks mate

4

captain_morgan_1999:
I was just wondering what the difference between these to is?
I tried googling but couldn't find anything.

EEPROM.write vs EEPROM.update

Sure you used google ?

A google search on;

Arduino EEPROM.update

and

EEPROM.write vs EEPROM.update

Both point to the reference page that explains the difference.

5

EEPROM.put() also uses the update method, which is useful for writing data types longer than a byte (can also be used with a single byte).