///////////////////////////////////Exercise 1:

int ledPin = D2;

void setup() {

Particle.function("ledFlash", ledControl);

pinMode(ledPin, OUTPUT);

digitalWrite(ledPin, LOW);
}

void loop() {

//Particle.function()

}

int ledControl(int command){
    int state = LOW;

for(int i=0; i<3;i++){
        if(command =="HIGH"){
            
            state = HIGH;
            digitalWrite(ledPin, state);
            delay(300);
            state = LOW;
            digitalWrite(ledPin, state);
            delay(300);
            state = HIGH;
            digitalWrite(ledPin, state);
            delay(300);
            state = LOW;
            digitalWrite(ledPin, state);
            delay(300);
            state = HIGH;
            digitalWrite(ledPin, state);
            delay(300);
            state = LOW;
            digitalWrite(ledPin, state);
            return 1;
            
        }else if(command == "LOW"){
            state = LOW;
            digitalWrite(ledPin, state);
            return 1;
            
        }else{
            return -1;
            }
}
}

//////////////////////////////////////Exercise 2:
int ledPin = D2;
void setup() {

Particle.function("ledFlash", ledControl);

pinMode(ledPin, OUTPUT);

digitalWrite(ledPin, LOW);
}

void loop() {

//Particle.function()

}

int ledControl(String s){
    int x = s.toInt();
    
            for(int i=0; i<x;i++){
            digitalWrite(ledPin, 1);
            delay(200);
            digitalWrite(ledPin, 0);
            delay(150);
        }
        
        return x;
}

/////////////////////////////////////Exercise 3:
int ledPin = D2;
int ledPin2 = D3;
void setup() {

Particle.function("redLEDFlash", ledControl);
Particle.function("blueLEDFlash", ledControl2);

pinMode(ledPin, OUTPUT);
pinMode(ledPin2,OUTPUT);

digitalWrite(ledPin, LOW);
digitalWrite(ledPin2, LOW);
}

void loop() {

//Particle.function()

}

int ledControl(String a){
    int x = a.toInt();
    
            for(int i=0; i<x;i++){
            digitalWrite(ledPin, 1);
            delay(200);
            digitalWrite(ledPin, 0);
            delay(150);
        }
        
        return x;
}

int ledControl2(String b){
    int y = b.toInt();
    
            for(int j=0; j<y;j++){
            digitalWrite(ledPin2, HIGH);
            delay(200);
            digitalWrite(ledPin2, LOW);
            delay(150);
        }
        
        return y;
}