Now a "virgin" arduino has every address in the EEPROM set to 0xFF. Here's a quick sketch to reset the EEPROM to as new, so you can test your code on a fresh arduino.
It outputs to the serial monitor, and blinks Pin 13 on completion.
Apologies for lack of comments, but it's straightforward enough...
#include <EEPROM.h> //EEPROM interface int addr = 0; float len; int pcComplete; void setup() { Serial.begin (9600); Serial.println ("EEPROM Eraser"); Serial.print("Size of EEPROM ="); len = EEPROM.length(); Serial.print (len); Serial.println (" bytes"); delay (1000); pinMode(13, OUTPUT); } void loop() { EEPROM.write (addr,255); Serial.print (addr); Serial.print (" "); pcComplete = (addr / len)*100; Serial.print (pcComplete); Serial.println ("%"); addr ++; if (addr == len+1){ addr = 0; Serial.println ("Complete"); blinkPin(); } } void blinkPin () { while (1) { digitalWrite(13, HIGH); delay(1000); digitalWrite(13, LOW); delay(1000); } }
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