This might be ugly, but it should do what you want:
int inPin1; // Assign it to the First Button
int inPin2; // Assign it to the Second Button
int time1, time2;
const int debounce = 20; // Set it to the value you want
int state;
int outPin1; // Assign it to the First LED
int outPin2; // Assign it to the Second LED
int reading1, reading2;
int previous1, previous2;
/* The rest of your declarations */
void doIt(int outPin)
{
Serial.print("Button Switch State Change:");
if (state == HIGH) state = LOW;
else state = HIGH;
Serial.println(state);
lcd.clear();
lcd.print("Zone1|State: ");
lcd.print(state ? F("On") : F("Off"));
Serial.print(state ? F("On") : F("Off"));
digitalWrite(outPin, state);
}
void setup(){
pinMode(outPin1, OUTPUT);
pinMode(outPin2, OUTPUT);
}
void loop()
{
reading1 = digitalRead(inPin1);
reading2 = digitalRead(inPin2);
if (reading1 == HIGH && previous1 == LOW && millis() - time1 > debounce){
doIt(outPin1);
}
else if (reading2 == HIGH && previous2 == LOW && millis() - time2 > debounce){
doIt(outPin2);
}
previous1 = reading1;
previous2 = reading2;
time1 = millis();
time2 = millis();
}