The Fire Alert System

//this is Argon1, the argon used in the room where fire is being detected. It sends alerts to an external operator (Argon2) in which the operator can send help.
int ledAlert = D0; //red LED
int ledStandby = D7; //blue LED built in
int ledHelp = D4; //green LED

int sensor = A5; //analog pinout for flame detector

int detect = 0; //sets initial analog value of fire to zero
 
bool fire = false; //sets initial status of fire to no fire

void setup(){ //sets up the pinouts and subscribes to information
    Serial.begin(9600); //necessary for code to function
    pinMode(ledAlert, OUTPUT); //red LED alerts the victim there is a fire
    pinMode(ledStandby, OUTPUT); //blue LED remains on when there is no fire to reassure that the system is functional
    pinMode(sensor, INPUT); //analog input from flame sensor
    pinMode(ledHelp,OUTPUT); //the help signal that help is on the way (green LED)
    Particle.variable("detect",detect); //claims a variable for the flame intensity values
    Particle.subscribe("ActionLine",actionLine); //subscribes to Argon2's messages in the console
}


void loop(){ //loops this code over and over
    detect = analogRead(sensor); //reads analog input from flame detector
    if(detect <= 2000 && fire == false){ //if there is now a new fire detected -- turn alert LED on and send message to console. Argon2 will interpet those messages and alert the operator
        String num = String(detect); //integer becomes string for publishing requirements
        digitalWrite(ledAlert, HIGH); //turns on red LED
        digitalWrite(ledStandby, LOW); //turns off the standby LED to again reassure the system is operational and that the red LED turning on is not a joke or malfunction
        Particle.publish("Fire_Sensor","on_fire",PRIVATE); //sends message to console that there is a fire
        Particle.publish("Fire_Value",num,PRIVATE); //provides the intensity of the fire via analog input
        fire = true; //sets the variable to true for fire
        delay(2000); //2 second delay to prevent overloading the console with messages
    }
    if(fire == true && detect >= 2000){ //if there is no longer a fire -- turn everything off/back to standby
        Particle.publish("Fire_Sensor", "not_on_fire", PRIVATE); //message the console that there is no fire
        digitalWrite(ledAlert, LOW); //turns off red LED
        digitalWrite(ledStandby, HIGH); //turns on standby LED
        fire = false; //sets variable for not a fire
    }
}

void actionLine(const char *event, const char *data){ //pulls data for use
    if(strcmp(data,"Help_is_on_the_way")==0){ //checks dataset to see if the message "Help_is_on_the_way" was sent
        digitalWrite(ledHelp, HIGH); //if true, turn on the green LED to tell the victim 
        delay(5000); //LED remains on for 5 seconds
        digitalWrite(ledHelp,LOW); //turn the LED off to prevent it from staying on forever
    }
}   

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