/*
   PIR sensor tester
*/

int ledPin = 13;                // choose the pin for the LED
int inputPirUp = 2;               // choose the input pin (for PIR sensor)
int inputPirDwn = 3; 
int inputLDR = 4; 
int pirState = LOW;             // we start, assuming no motion detected
int pirUp0 = 0;                    // variable for reading the pin status
int valPirUp = 0;                    // variable for reading the pin status
int valPirDwn = 0;                    // variable for reading the pin status
int valLDR = 0;                    // variable for reading the pin status

void setup() {
  pinMode(ledPin, OUTPUT);      // declare LED as output
  
  pinMode(inputPirUp, INPUT);     // declare sensor as input
  pinMode(inputPirDwn, INPUT);     // declare sensor as input
  pinMode(inputLDR, INPUT);     // declare sensor as input
  Serial.begin(9600);
}

void loop() {
  valLDR = digitalRead(inputLDR);  // read input value
  if (valLDR == HIGH) {
    valPirUp = digitalRead(inputPirUp);  // read input value
    valPirDwn = digitalRead(inputPirDwn);  // read input value

    if (valPirUp == HIGH || valPirDwn == HIGH) {            // check if the input is HIGH
      digitalWrite(ledPin, HIGH);  // turn LED ON
      if (pirState == LOW) {
        // we have just turned on
        Serial.println("Motion detected!");
        // We only want to print on the output change, not state
        pirState = HIGH;
      }
    } else {
      digitalWrite(ledPin, LOW); // turn LED OFF
      if (pirState == HIGH) {
        // we have just turned of
        Serial.println("Motion ended!");
        // We only want to print on the output change, not state
        pirState = LOW;
      }
    }
  }
}