void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ROV DRIVER!");
}

void loop() {
  // #define VERT_PIN 0
#define HORZ_PIN 2
#define SEL_PIN  4

void setup() {
  pinMode(2, INPUT);
  pinMode(0, INPUT);
  pinMode(4, INPUT_PULLUP);
}

void loop() {
  int vert = analogRead(VERT_PIN);
  int horz = analogRead(HORZ_PIN);
  bool selPressed = digitalRead(SEL_PIN) == LOW;
  // horz goes from 0 (right) to 1023 (left)
  // vert goes from 0 (bottom) to 1023 (top)
  // selPressed is true is the joystick is pressed
}:
  delay(10); // this speeds up the simulation
}