// Connected pins
const int pressureSense = A0;
const int button = 4;
const int LED_orange = 5; // pin 5 is PWM (~)
const int LED_white = 6; // pin 6 is PWM (~)

// Usable variables
int buttonState = 0; // store button press state for switching LED colors (0, 1)
int pressureRaw = 0; // stores raw pressure data (~80 - ~450)
int pressureConstrained = 0; // stores constrained pressure data (80-450)
int brightness = 0; // stores LED brightness from mapped, constrained, pressure data (0-255)

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println(analogRead(pressureSense)); // shows raw pressure data for debugging

  // Process pressure input
  pressureRaw = analogRead(pressureSense); // store raw pressure value
  pressureConstrained = constrain(pressureRaw, 80, 450); // constrain pressure data to range of 80-450
  brightness = map(pressureConstrained, 80, 450, 0, 255); // map pressure scale to brightness scale

  // Choose and control LEDs
  buttonState = digitalRead(button); // store current button state
  if (buttonState == 1) { // if button pressed, light orange LED
    analogWrite(LED_orange, brightness);
  }
  else { //otherwise, white LED
    analogWrite(LED_white, brightness);
  }
  
  delay(50);
}