2 Potentiometers controlling a single LED

Projects Programming
17

Here is a start. I did the button processing and created a skeleton for the state machine and timing.

const int LED = 2;
const int Button = 4;
const int timeOn = A3;
const int timeOff = A4;

enum StateEnum
{
  STATE_IDLE,
  STATE_LEDON,
  STATE_LEDOFF
};

StateEnum state = STATE_IDLE;

void setup() 
{
  pinMode(LED, OUTPUT);
  pinMode(Button, INPUT_PULLUP);
}

void loop() 
{
  static int lastButtonState = digitalRead(Button);
  static unsigned long prevMillis;
  
  int buttonState = digitalRead(Button);
  unsigned long onVal = analogRead(timeOn);
  onVal = map(onVal, 0, 1023, 50, 500);
  unsigned long offVal = analogRead(timeOff);
  offVal = map(offVal, 0, 1023, 50, 500);
  unsigned long currMillis = millis();

  if (buttonState != lastButtonState)
  {
    delay(50);
    if (buttonState == LOW)
    {
      if (state == STATE_IDLE)
      {
        // set up to start flashing
        prevMillis = millis();
        digitalWrite(LED, HIGH);
        state = STATE_LEDON;
      }
      else
      {
        // Turn off LED go to idle state
        digitalWrite(LED, LOW);
        state = STATE_IDLE;
      }
    }
    lastButtonState = buttonState;
  }

  switch (state)
  {
    case STATE_IDLE:
      break;

    case STATE_LEDON:
      // check to see if on time has expired.  If so then turn LED off and transition to STATE_LEDOFF
      break;

    case STATE_LEDOFF:
      // check to see if off time has expired.  If so then turn LED on and transition to STATE_LEDON
      break;
  }
}