/* Simple Counter
* ——————
*
* This is a simple counter that takes a digital input
*
*/
int ledPin=13; // choose the pin for the LED
int switchPinUp=2; // choose the input pin (for a pushbutton)
int switchPinMin=3;
int val = 0; // variable for reading the pin status
int counter = 0;
int currentStateUp = 0;
int previousStateUp = 0;
int currentStateMin = 0;
int previousStateMin = 0;

void setup() {
    pinMode(ledPin, OUTPUT); // declare LED as output
    pinMode(switchPinUp, INPUT); // declare pushbutton as input
    pinMode(switchPinMin, INPUT); // declare pushbutton as input
    Serial.begin(9600);
}

void loop() {
    val = digitalRead(switchPinUp); // read input value
    if (val == LOW) { // check if the input is HIGH (button released)        
        currentStateUp = 1;
    }
    else {  
        currentStateUp = 0;
    }
    if(currentStateUp != previousStateUp){
        if(currentStateUp == 1){
            counter = counter+1;
            Serial.println(counter);
        }
    }
    previousStateUp = currentStateUp;

    val = digitalRead(switchPinMin); // read input value
    if (val == LOW) { // check if the input is HIGH (button released)       
        currentStateMin = 1;
    }
    else {       
        currentStateMin = 0;
    }
    if(currentStateMin != previousStateMin){
        if(currentStateMin == 1){
            counter = counter-1;
            Serial.println(counter);
        }
    }
    previousStateMin = currentStateMin;
    
    if (counter== 5)  
    {
        digitalWrite(ledPin, HIGH);         
    } 
    else 
    {
        digitalWrite(ledPin, LOW); 
    }
    delay(100);

}