It would maybe make sense to include that feature to the examples ?

Best regards

Klaus

An input pin will become LOW when the jumper connects this pin to GND and will become HIGH when the jumper is removed (stable high by activating the interval pull up resistor)

This jumper check code can be something like this:

    pinMode(CLEAR_EEPROM_JUMPER, INPUT);           // set pin to input
    digitalWrite(CLEAR_EEPROM_JUMPER, HIGH);       // turn on internal pull up resistors
    delay(50);                                     // Wait to stabilize the input pin
    // If jumper is placed and thus the input pin is LOW a clean EEPROM is required
    if (digitalRead(CLEAR_EEPROM_JUMPER) == LOW) {
        Serial.begin(BAUD_RATE);
        Serial.println(F("Clearing EEPROM. Please wait..."));
        for (int i=0;i<512;i++) {
            EEPROM.write(i, 0xff);
        }
        Serial.println(F("Clearing done. Continue with normal init..."));
    }

A very simple plug in would look something like this:

#include <MySensor.h>
#include <SPI.h>
#include <EEPROM.h>  

// Clear EEPROM jumper: when placed this pin should be connected to GND 
#define CLEAR_EEPROM_JUMPER  6

MySensor gw;

void setup()  
{ 
    pinMode(CLEAR_EEPROM_JUMPER, INPUT);           // set pin to input
    digitalWrite(CLEAR_EEPROM_JUMPER, HIGH);       // turn on internal pull up resistors
    delay(50);                                     // Wait to stabalize the input pin
    // If jumper is placed and thus the input pin is LOW a clean EEPROM is required
    if (digitalRead(CLEAR_EEPROM_JUMPER) == LOW) {
        Serial.begin(BAUD_RATE);
        Serial.println(F("Clearing EEPROM. Please wait..."));
        for (int i=0;i<512;i++) {
            EEPROM.write(i, 0xff);
        }
        Serial.println(F("Clearing done. Continue with normal init..."));
    }
    
    // place normal init here
    gw.begin();
}

void loop()      
{ 
    // Normal sensor stuff here
    gw.process();
} 

Just add this check to all your plugin code