arduino How to store variables in EEPROM and use them for permanent storage Store a variable in EEPROM and then retrieve it and print to screen
Example
First, add a reference to <EEPROM.h> at the start of your sketch:
#include <EEPROM.h>
Then your other code:
// Stores value in a particular address in EEPROM. There are almost 512 addresses present.
// Store value 24 to Address 0 in EEPROM
int addr = 0;
int val = 24;
EEPROM.write(addr, val); // Writes 24 to address 0
// ---------
// Retrieves value from a particular address in EEPROM
// Retrieve value from address 0 in EEPROM
int retrievedVal = EEPROM.read(0); // Retrieves value stored in 0 address in
// EEPROM
// *[NOTE: put Serial.begin(9600); at void setup()]*
Serial.println(retrievedVal); // Prints value stored in EEPROM Address 0 to
// Serial (screen)
