// constants won't change. They're used here to set pin numbers:
const int butUp = 8;  // the number of the pushbutton pin
const int butDn = 10;
const int ledPin = 9;    // the number of the LED pin

// variables will change:
int butUpState = 0;  // variable for reading the pushbutton status
int butDnState = 0;  // variable for reading the pushbutton status
int var = 0;

void setup() {
  // put your setup code here, to run once:
  // initialize the LED pin as an output:
  Serial.begin(115200); 
  pinMode(ledPin, OUTPUT);
  // initialize the pushbutton pin as an input:
  pinMode(butUp, INPUT);
  pinMode(butDn, INPUT);
}

void loop() {
  //PWM, enter setup, state machine
  //
  // put your main code here, to run repeatedly:
  // read the state of the pushbutton value:
  butUpState = digitalRead(butUp);
  butDnState = digitalRead(butDn);

  // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
  if (butUpState == HIGH) {
    digitalWrite(ledPin, HIGH);     // turn LED on:
    Serial.println("UP");
  } else {
    // turn LED off:
    digitalWrite(ledPin, LOW);
  }
  delay(20);

  //////////////////////
  ////state machine
  //////////////////////
  //idle - pmw light ramp upd and down
  //go up - fast blink .:* ; M1234 up
  //go down - fast blink *:. ; M1234 dn
  //adjust1 - 1 blink
  //a1 up - pres/press+hold - M1 up
  //a1 dn - pres/press+hold - M1 dn
  //adjust2 - 2 blinks
  //adjust3
  //adjust4
  //
  //
  //long press both - enter adjust mode, adjust1
  //short press both - adjust1->adjust2, modulo 4
  //long press both again - leave adjust mode
  //short press up/dn - move up/dn

  switch (var) {
    case 1:
      //do something when var equals 1
      break;
    case 2:
      //do something when var equals 2
      break;
    default:
      // if nothing else matches, do the default
      // default is optional
      break;
  }

}