Arduino - EEPROMGet - Weblessons

EEPROM

get()

Description

Read any data type or object from the EEPROM.

Syntax

EEPROM.get(address, data)

Parameters

address: the location to read from, starting from 0 (int)

data: the data to read, can be a primitive type (eg. float) or a custom struct

Returns

A reference to the data passed in

Example

#include <EEPROM.h> struct MyObject{
float field1;
byte field2;
char name[ 10 ] ;
} ; void setup ( ) { float f = 0.00f ; //Variable to store data read from EEPROM.
int eeAddress = 0 ; //EEPROM address to start reading from Serial.begin ( 9600 ) ;
while ( ! Serial ) {
; // wait for serial port to connect. Needed for Leonardo only
}
Serial.print ( "Read float from EEPROM: " ) ; //Get the float data from the EEPROM at position 'eeAddress'
EEPROM.get ( eeAddress, f ) ;
Serial.println ( f, 3 ) ; //This may print 'ovf, nan' if the data inside the EEPROM is not a valid float. // get() can be used with custom structures too.
eeAddress = sizeof( float ) ; //Move address to the next byte after float 'f'.
MyObject customVar; //Variable to store custom object read from EEPROM.
EEPROM.get ( eeAddress, customVar ) ; Serial.println ( "Read custom object from EEPROM: " ) ;
Serial.println ( customVar.field1 ) ;
Serial.println ( customVar.field2 ) ;
Serial.println ( customVar.name ) ;
} void loop ( ) { /* Empty loop */ }