SPAD.neXt

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/*
 * Title:   LCD Display Unit. 
 * Version: 0.0.1
 * 
 * Desc:    Using an 4x16 lcd unit to display various readouts from MSFS2020 via SpadNext.
 * 
 * Author:  Redscouse (of ScouseAirlines.co.uk)
 * Licence: Free to use and modify as required.
 * Created: 07-06-2021 
 * 
 */

#include <CmdMessenger.h>  // CmdMessenger

// ------------------  S E T U P -----------------------


// Set up a flag.
bool isReady = false;
String stdtemp;
String ambtemp;
String tottemp;

int btn_pin = 12;

// Listen on serial connection for messages from the pc
CmdMessenger messenger(Serial);

// This is the list of recognized commands. These can be commands that can either be sent
// or received.
// In order to receive, attach a callback function to these events
enum {
  kRequest    =   0, // Request from SPAD.neXt
  kCommand    =   1, // Command to SPAD.neXt
  kEvent      =   2, // Events from SPAD.neXt
  kDebug      =   3, // Debug strings to SPAD.neXt Logfile
  kSimCommand =   4, // Send Event to Simulation
  kStdTemp    = 100, // My data request.
  kAmbTemp    = 101, // My data request.
  kTotTemp    = 102, // My data request.
};

void attachCommandCallbacks() {
  // Attach callback methods
  messenger.attach(onUnknownCommand);
  messenger.attach(kRequest, onIdentifyRequest);
  messenger.attach(kStdTemp, onStdTempRequest);
  messenger.attach(kAmbTemp, onAmbTempRequest);
  messenger.attach(kTotTemp, onTotTempRequest);
}


// ------------------  C A L L B A C K S -----------------------

// Called when a received command has no attached function
void onUnknownCommand()
{
  messenger.sendCmd(kDebug,"UNKNOWN COMMAND"); 
}


// Callback function to respond to indentify request. This is part of the
// Auto connection handshake.
void onIdentifyRequest() {
  //
  char *szRequest = messenger.readStringArg();

  //
  if (strcmp(szRequest, "INIT") == 0) {
    messenger.sendCmdStart(kRequest);
    messenger.sendCmdArg("SPAD");
    // Unique Device ID: Change this!
    messenger.sendCmdArg(F("{3f7b6426-8647-4695-8341-77ce407b7169}"));
    // Device Name for UI
    messenger.sendCmdArg("MSFS Temperature Monitor");
    messenger.sendCmdEnd();
    return;
  }

  if (strcmp(szRequest, "PING") == 0) {
    messenger.sendCmdStart(kRequest);
    messenger.sendCmdArg("PONG");
    messenger.sendCmdArg(messenger.readInt32Arg());
    messenger.sendCmdEnd();
    return;
  }
  
  if (strcmp(szRequest, "CONFIG") == 0) {

    // Request standard temperature updates
    messenger.sendCmdStart(kCommand);
    messenger.sendCmdArg("SUBSCRIBE");
    messenger.sendCmdArg(kStdTemp);
    messenger.sendCmdArg("SIMCONNECT:STANDARD ATM TEMPERATURE");
    messenger.sendCmdEnd();

    // Request ambient temperature updates
    messenger.sendCmdStart(kCommand);
    messenger.sendCmdArg("SUBSCRIBE");
    messenger.sendCmdArg(kAmbTemp);
    messenger.sendCmdArg("SIMCONNECT:AMBIENT TEMPERATURE");
    messenger.sendCmdEnd();

    // Request total air temperature updates
    messenger.sendCmdStart(kCommand);
    messenger.sendCmdArg("SUBSCRIBE");
    messenger.sendCmdArg(kTotTemp);
    messenger.sendCmdArg("SIMCONNECT:TOTAL AIR TEMPERATURE");
    messenger.sendCmdEnd();

    // tell SPAD.neXT we are done with config
    messenger.sendCmd(kRequest, "CONFIG");
    isReady = true;
    //return; // not sure this is required?
  }
}

// Called for standard temperature.
void onStdTempRequest() {
  stdtemp = "red"; //messenger.readInt32Arg();
  messenger.sendCmd(kDebug, "Standard Temperature: ");
  messenger.sendCmd(kDebug);
  messenger.sendCmd(kDebug, stdtemp);
}

// Called for ambient temperature.
void onAmbTempRequest() {
  ambtemp = "green"; //messenger.readInt32Arg();
  messenger.sendCmd(kDebug, "Ambient Temperature");
  messenger.sendCmd(kDebug, ambtemp);
}

// Called for total temperature.
void onTotTempRequest() {
  tottemp = "pink"; //messenger.readInt32Arg();
  messenger.sendCmd(kDebug, "Total Temperature");
  messenger.sendCmd(kDebug, tottemp);
}

// ------------------ M A I N  ----------------------

// Set up the required pins etc.
void setup() {
  
  // Initialise serial to display output in console.
  Serial.begin(115200);

  // Attach my application's user-defined callback methods
  attachCommandCallbacks();
  
  // Initialize button pins as input_pullup
  pinMode(btn_pin, INPUT_PULLUP);
}

// Last state of the button
int lastButtonState = 0;

// Run the loop.
void loop() {

  // check the button.
  int currentButtonState = !digitalRead(btn_pin);
  if (currentButtonState != lastButtonState) {
    lastButtonState = currentButtonState;

    if (currentButtonState == 1) { 
      messenger.sendCmd(kSimCommand,"SIMCONNECT:PARKING_BRAKES,36000");
    }
    if (currentButtonState == 0) { 
      messenger.sendCmd(kSimCommand,"SIMCONNECT:PARKING_BRAKES,0");
    }
  
    messenger.sendCmd(kStdTemp);
    messenger.sendCmd(kAmbTemp);
    messenger.sendCmd(kTotTemp);

  }

  // Process incoming serial data, and perform callbacks
  messenger.feedinSerialData();
}