// constants won't change. They're used here to
// set pin numbers:
const int buttonPin = 2; // the number of the pushbutton pin
const int buttonPin2 = 3; // the number of the pushbutton
const int ledPin = 4; // the number of the LED pin
// Variables will change:
int ledState = HIGH; // the current state of the output pin
int buttonState; // the current reading from the input pin
int lastButtonState = LOW;
int ledState2 = HIGH; // the current state of the output pin
int buttonState2; // the current reading from the input pin
int lastButtonState2= LOW; // the previous reading from the input pin
// the following variables are unsigned long's because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
unsigned long lastDebounceTime = 0; // the last time the output pin was toggled
unsigned long debounceDelay = 50;
unsigned long lastDebounceTime2 = 0; // the last time the output pin was toggled
unsigned long debounceDelay2 = 50; // the debounce time; increase if the output flickers
int serial=0;
void setup() {
pinMode(buttonPin, INPUT);
pinMode(buttonPin2, INPUT);
pinMode(ledPin, OUTPUT);
// set initial LED state
digitalWrite(ledPin, ledState);
Serial.begin(9600);
}
void loop() {
// read the state of the switch into a local variable:
int reading = digitalRead(buttonPin);
int reading2 = digitalRead(buttonPin2);
// check to see if you just pressed the button
// (i.e. the input went from LOW to HIGH), and you've waited
// long enough since the last press to ignore any noise:
// If the switch changed, due to noise or pressing:
if (reading != lastButtonState) {
// reset the debouncing timer
lastDebounceTime = millis();
}
if (reading2 != lastButtonState2) {
// reset the debouncing timer
lastDebounceTime2 = millis();
}
if ((millis() - lastDebounceTime) > debounceDelay) {
// whatever the reading is at, it's been there for longer
// than the debounce delay, so take it as the actual current state:
// if the button state has changed:
if (reading != buttonState) {
buttonState = reading;
// only toggle the LED if the new button state is HIGH
if (buttonState == HIGH) {
ledState = !ledState;
serial++;
Serial.println(serial);
}
}
}
if ((millis() - lastDebounceTime2) > debounceDelay2) {
// whatever the reading is at, it's been there for longer
// than the debounce delay, so take it as the actual current state:
// if the button state has changed:
if (reading2 != buttonState2) {
buttonState2 = reading2;
// only toggle the LED if the new button state is HIGH
if (buttonState2 == HIGH) {
ledState2 = !ledState2;
serial--;
Serial.println(serial);
}
}
}
// set the LED:
if(serial>3 || serial<0)
{
digitalWrite(ledPin, HIGH);
}
else
{
digitalWrite(ledPin, LOW);
}
// save the reading. Next time through the loop,
// it'll be the lastButtonState:
lastButtonState = reading;
lastButtonState2 = reading2;
}
