int flexPin = A0;
int flexReading = 0;
int ledPin = D2;
int ledBrightness = 0;
int switchPin = D3;


void setup() {
    pinMode( switchPin , INPUT_PULLUP);
    pinMode(ledPin, OUTPUT);
    Particle.variable("floopy", flexReading );
    Particle.variable("brightness", ledBrightness );

}


void loop() {
    int buttonState = digitalRead( switchPin );
    if( buttonState == LOW ) {
        digitalWrite( ledPin, HIGH);
        flexReading = analogRead(flexPin);
        ledBrightness = map(flexReading, 100, 1500, 0, 255);
        analogWrite(ledPin, ledBrightness);
        delay(500);
    }else{
    digitalWrite( ledPin, LOW);
  }  
    

}