/*
01010000011100100110111101110100011011110010000001000111

Smart Smoke Detector

Created August 30, 2015
Modified August 30, 2015
by Anthony Garofalo (Proto G)

Visit my YouTube channel here: https://www.youtube.com/channel/UCpTuKJrXFwybnpOG7HpTpZw
Visit my Instructables page here: http://www.instructables.com/member/Proto+G/

  _____   ______  _____  _______  _____        ______
 |_____] |_____/ |     |    |    |     |      |  ____
 |       |    \_ |_____|    |    |_____|      |_____|
  
01010000011100100110111101110100011011110010000001000111
*/


int SensorA0;

int tinkerDigitalRead(String pin);
int tinkerDigitalWrite(String command);
int tinkerAnalogRead(String pin);
int tinkerAnalogWrite(String command);



int speakerPin = D0;
int sensorValue;
int threshold = 450;  //Determine your threshold using the mobile Tinker application.  Find the level at which the sensor detects smoke.

void setup() 
{
    pinMode(0, OUTPUT);//Speaker

    Spark.variable("SensorA0", &SensorA0, INT);//Connect your smoke sensor to A0
    
    //The following 4 lines are only needed for the mobile tinker application.  
    Spark.function("digitalread", tinkerDigitalRead);
    Spark.function("digitalwrite", tinkerDigitalWrite);
    Spark.function("analogread", tinkerAnalogRead);
    Spark.function("analogwrite", tinkerAnalogWrite);
}

void loop() 
{
    
sensorValue = analogRead(A0);  // read the input on analog pin 0:
    
  if(sensorValue > threshold){
   Spark.publish("Smoke");
   digitalWrite(speakerPin, HIGH);
   delay(15000); //delay cascade to prevent too many texts
   
   sensorValue = analogRead(A0);
   
   if(sensorValue > threshold){
   Spark.publish("Smoke");
   digitalWrite(speakerPin, HIGH);
   delay(60000);
   }
   
   sensorValue = analogRead(A0);
   
   if(sensorValue > threshold){
   Spark.publish("Smoke");
   digitalWrite(speakerPin, HIGH);
   delay(120000);
   }
   
   sensorValue = analogRead(A0);
   
   if(sensorValue > threshold){
   Spark.publish("Smoke");
   digitalWrite(speakerPin, HIGH);
   delay(600000);
   }
   
   sensorValue = analogRead(A0);
   
   if(sensorValue > threshold){
   Spark.publish("Smoke");
   digitalWrite(speakerPin, HIGH);
   delay(600000);
   }
   
    digitalWrite (speakerPin, LOW);
  }

  
  
  
 
  delay(100);        // delay in between reads for stability
  

    
}



//The following code allows you to still use the mobile Tinker application

int tinkerDigitalRead(String pin) {
    int pinNumber = pin.charAt(1) - '0';
    if (pinNumber< 0 || pinNumber >7) return -1;
    if(pin.startsWith("D")) {
        pinMode(pinNumber, INPUT_PULLDOWN);
        return digitalRead(pinNumber);}
    else if (pin.startsWith("A")){
        pinMode(pinNumber+10, INPUT_PULLDOWN);
        return digitalRead(pinNumber+10);}
    return -2;}

int tinkerDigitalWrite(String command){
    bool value = 0;
    int pinNumber = command.charAt(1) - '0';
    if (pinNumber< 0 || pinNumber >7) return -1;
    if(command.substring(3,7) == "HIGH") value = 1;
    else if(command.substring(3,6) == "LOW") value = 0;
    else return -2;
    if(command.startsWith("D")){
        pinMode(pinNumber, OUTPUT);
        digitalWrite(pinNumber, value);
        return 1;}
    else if(command.startsWith("A")){
        pinMode(pinNumber+10, OUTPUT);
        digitalWrite(pinNumber+10, value);
        return 1;}
    else return -3;}

int tinkerAnalogRead(String pin){
    int pinNumber = pin.charAt(1) - '0';
    if (pinNumber< 0 || pinNumber >7) return -1;
    if(pin.startsWith("D")){
        pinMode(pinNumber, INPUT);
        return analogRead(pinNumber);}
    else if (pin.startsWith("A")){
        pinMode(pinNumber+10, INPUT);
        return analogRead(pinNumber+10);}
    return -2;}

int tinkerAnalogWrite(String command){
    int pinNumber = command.charAt(1) - '0';
    if (pinNumber< 0 || pinNumber >7) return -1;
    String value = command.substring(3);
    if(command.startsWith("D")){
        pinMode(pinNumber, OUTPUT);
        analogWrite(pinNumber, value.toInt());
        return 1;}
    else if(command.startsWith("A")){
        pinMode(pinNumber+10, OUTPUT);
        analogWrite(pinNumber+10, value.toInt());
        return 1;}
    else return -2;}