X-Plane イグニッションキーのコントロール

#include "Bounce.h"
  
// per X-Plane DataRef docs
enum IGN_KEY_POSITION {
  IGN_OFF = 0,
  IGN_LEFT = 1,
  IGN_RIGHT = 2,
  IGN_BOTH = 3,
  IGN_START = 4
};
  
// button input pins
const int Pin_IgnOff = 1;
const int Pin_IgnRight = 2;
const int Pin_IgnLeft = 5;
const int Pin_IgnBoth = 9;
const int Pin_IgnStart = 3;
  
Bounce ignOff = Bounce (Pin_IgnOff, 5);
Bounce ignRight = Bounce (Pin_IgnRight, 5);
Bounce ignLeft = Bounce (Pin_IgnLeft, 5);
Bounce ignBoth = Bounce (Pin_IgnBoth, 5);
Bounce ignStart = Bounce (Pin_IgnStart, 5);
  
// output dataref/commands
// the ignition key dataref does not engage the starter for some reason
// so we'll also use the normal engage_starter_1 command
FlightSimInteger ignPosition;
FlightSimCommand engineStart1;
  
void setup() {
  pinMode (Pin_IgnOff, INPUT_PULLUP);
  pinMode (Pin_IgnRight, INPUT_PULLUP);
  pinMode (Pin_IgnLeft, INPUT_PULLUP);
  pinMode (Pin_IgnBoth, INPUT_PULLUP);
  pinMode (Pin_IgnStart, INPUT_PULLUP);
  
  ignPosition = XPlaneRef("sim/cockpit2/engine/actuators/ignition_on[0]");
  engineStart1 = XPlaneRef("sim/starters/engage_starter_1");
  
  pinMode (LED_BUILTIN, OUTPUT);
}
  
void loop() {
  FlightSim.update();
  
  ignOff.update();
  ignRight.update();
  ignLeft.update();
  ignBoth.update();
  ignStart.update();
  
  // non-blocking input to update ignition key position
  if (ignOff.fallingEdge()) ignPosition = IGN_OFF;
  if (ignLeft.fallingEdge()) ignPosition = IGN_LEFT;
  if (ignRight.fallingEdge()) ignPosition = IGN_RIGHT;
  if (ignBoth.fallingEdge()) ignPosition = IGN_BOTH;
  // engage starter using command as well as by moving key
  if (ignStart.fallingEdge()) {
    ignPosition = IGN_START;
    engineStart1.begin();
    digitalWrite (LED_BUILTIN, HIGH);
  }
  if (ignStart.risingEdge()) {
    engineStart1.end();
    digitalWrite (LED_BUILTIN, LOW);
  }
  
// debug code for hardware test
//  if ( ignOff.read() == LOW ||
//       ignRight.read() == LOW ||
//       ignLeft.read() == LOW ||
//       ignBoth.read() == LOW ||
//       ignStart.read() == LOW
//       ) {
//    digitalWrite(LED_BUILTIN, HIGH);
//  } else {
//    digitalWrite(LED_BUILTIN, LOW);
//  }
  
}