MEGR 3171 Mailbox Notification System

// Mailbox notification system

SYSTEM_THREAD(ENABLED); //Enable multitasking.  Allows the ability to catch the mailpin trigger and send the message.

SYSTEM_MODE(AUTOMATIC);  //Run code, then connect.

int inputPin = D0;              
int light = D4;
int pirState = LOW;             // no motion detected
int val = 0;                    // variable for pin status
                  // Variable for pin status

int calibrateTime = 30000;   

void setup() {
    pinMode(light, OUTPUT);
    pinMode(inputPin, INPUT);  
    Particle.subscribe ("newmail", myHandler);
}

void loop() {

  if (calibrated()) {

    readTheSensor();

    reportTheData();
    }
}

void readTheSensor() {
    val = digitalRead(inputPin);
}

bool calibrated() {
    return millis() - calibrateTime > 0;
}


void reportTheData() {
    if (val == HIGH) {
        // the current state is no motion
        // announce this change by publishing an event
        if (pirState == LOW) {
          // we have just turned on
         Particle.publish("Mailbox", "Mailbox Open", PUBLIC);
          // Update the current state
          pirState = HIGH;
                 }
    } else {
        if (pirState == HIGH) {
          // we have just turned off
          // Update the current state
          Particle.publish("Mailbox", "Mailbox Closed", PUBLIC);
          pirState = LOW;
                  }
    }
}

void myHandler(const char *event, const char *data) {
    digitalWrite (light, HIGH);
    delay(1500);
    digitalWrite (light, LOW);
}