Need help Exit Status 1 when compiling code vers 1.8.15

The following code is known to work so I think, from what I've read that I'm missing a library. Any pointers on how to troubleshoot the code would be appreciated. I noticed some libraries show up in red text and some in black, is that a clue?

#include <BluetoothSerial.h>

  Modified control software to allow use of an ESP32 board in conjusction with Matthew Zwarts Android app to control a BB-R2 style droid
  Matt Zwarts app communicates by Bluetooth sending data for LeftJoy_X,LeftJoy_Y, Right_Joy_X, RightJoy_Y as comma seperated items
  Joystick values are between 0 and 200.  100,100 is Joystick centered.
  Start of the data packet is a double '<'
  example datastream:  00,100<<100,100,100,100<<150,130,100,100<<150,130,....

  Servo1 = 12  Left drive
  Servo2 = 13  Right drive
  Servo3 = 14  Dome

  DFPlayer Rx = 26
  DFPlayer Tx = 27

//If you find one of your servos drifting when joysticks are centered, or Bluetooth is not connected use the 'trim' variables with small numbers
//Drive motor mixing code taken from

// Uncomment the following line if you are using a DFPlayer for sounds
#define Using_DFPlayer

#include <Arduino.h>
#include <SoftwareSerial.h>  // uses ESPSoftwareSerial library
#include <BluetoothSerial.h>  // uses
#include <Servo.h>  // uses ServoESP32 library
#include <HardwareSerial.h>
#include "soc/soc.h"
#include "soc/rtc_cntl_reg.h"

//Bluetooth Definition
BluetoothSerial MySerial;
#define BT_NAME "ESP32BT_Chopp"

#ifdef Using_DFPlayer
  #include "DFRobotDFPlayerMini.h"
  //Serial for DFPlayer
  HardwareSerial DFSerial(1);
  DFRobotDFPlayerMini myDFPlayer;
  bool PlayLabel = false;
  long Player_Timer = 0;
  int sound_called = 0;

static const int servoPin1 = 12;  //Left Drive
static const int servoPin2 = 13;  //Right Drive
static const int servoPin3 = 14;  //Dome
Servo servo1;
Servo servo2;
Servo servo3;

 long previousMillis = 0;
 int timeout = 500;
unsigned long elapsedTime; // time current

byte receivedChar;        // serial data received from bluetooth device

int x_drive = 100;                     // value from joystick
int y_drive = 100;                     // value from joystick
int x2_dome = 100;                     // value from joystick
int y2_dome = 100;                     // value from joystick
int dome_val;

// Use to trim servos that move when joystick centered
// Use small numbers
int x1_trim = 0;
int y1_trim = 0;
int x2_trim = 0;
int y2_trim = 0;

// Differential Steering Variables  ////////////////////////////////////////
int     nJoyX;              // Joystick X input                     (-128..+127)
int     nJoyY;              // Joystick Y input                     (-128..+127)

int     nMotMixL;           // Motor (left)  mixed output           (-128..+127)
int     nMotMixR;           // Motor (right) mixed output           (-128..+127)

// - fPivYLimt  : The threshold at which the pivot action starts
//                This threshold is measured in units on the Y-axis
//                away from the X-axis (Y=0). A greater value will assign
//                more of the joystick's range to pivot actions.
//                Allowable range: (0..+127)
float fPivYLimit = 32.0;
float   nMotPremixL;    // Motor (left)  premixed output        (-128..+127)
float   nMotPremixR;    // Motor (right) premixed output        (-128..+127)
int     nPivSpeed;      // Pivot Speed                          (-128..+127)
float   fPivScale;      // Balance scale b/w drive and pivot    (   0..1   )


int keywordPointer2=0;

void setup() {
  // put your setup code here, to run once:

  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector

  Serial.begin(115200);  //Used only for debugging on arduino serial monitor
  Serial.println("Hello, my name is C1-10P!");

  MySerial.begin(BT_NAME);  //Start Bluetooth Serial

  #ifdef Using_DFPlayer
    DFSerial.begin(9600, SERIAL_8N1, 27, 26);  // speed, type, RX, TX
    myDFPlayer.begin(DFSerial); //Initialize DFPlayer

/****************************  Setup DFPlayer ************************************/
#ifdef Using_DFPlayer
  Serial.println(F("DFRobot DFPlayer Mini Demo"));
  Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));
  if (!myDFPlayer.begin(DFSerial)) {  //Use softwareSerial to communicate with mp3.
    Serial.println(F("Unable to begin:"));
    Serial.println(F("1.Please recheck the connection!"));
    Serial.println(F("2.Please insert the SD card!"));
  Serial.println(F("DFPlayer Mini online."));
  myDFPlayer.setTimeOut(500); //Set serial communictaion time out 500ms

    //----Set volume----
  myDFPlayer.volume(25);  //Set volume value (0~30).
  //----Set different EQ----
  //----Set device we use SD as default----


void loop() {
// put your main code here, to run repeatedly:

 // called functions////////////////////////////////////////////////////////////////////////


  // Play sounds



void bluetooth_data() {

  char rawData[40] = "";
  char trimmedData[40] ="";
  char keyword[] = "<<";

  if (MySerial.available() > 0) {//new data in
    size_t byteCount = MySerial.readBytesUntil('\n', rawData, sizeof(rawData) - 1); //read 100 CHARS in data to buffer
    rawData[byteCount] = NULL;//put an end character on the data
    Serial.print("Raw Data = ");
    //now find keyword and parse
    char *keywordPointer = strstr(rawData, keyword);
    if (keywordPointer != NULL) {
      strcpy(rawData,(rawData+(strlen(rawData)+2-strlen(keywordPointer)))); // Trim Leading characters and <<
      //Serial.println(rawData); //OK to here
      char *keywordPointer2 = strstr(rawData, keyword);  // Trim << and trailing characters
        if (keywordPointer2)                              // Trim << and trailing characters
        *keywordPointer2=0;                               // Trim << and trailing characters
      Serial.print("Trimmed Data = ");
      const char delimiter[] = ",";
      char parsedStrings[5][20];
      int dataCount = 0;

      char *token =  strtok(rawData, delimiter);//look for first piece of data after keyword until comma
      if (token != NULL && strlen(token) < sizeof(parsedStrings[0])) {
        strncpy(parsedStrings[0], token, sizeof(parsedStrings[0]));
        previousMillis = millis();
      } else {
        Serial.println("token too big");
        strcpy(parsedStrings[0], NULL);

      for (int i = 1; i < 5; i++) {
        token =  strtok(NULL, delimiter);
        if (token != NULL && strlen(token) < sizeof(parsedStrings[i])) {
          strncpy(parsedStrings[i], token, sizeof(parsedStrings[i]));
        } else {
          Serial.println("token to big");
          strcpy(parsedStrings[i], NULL);
      /*  for debug only
      Serial.print("Found ");
      Serial.println(" strings:");
      for (int i = 0; i < 5; i++){
      Serial.print(" ");  
      if (dataCount == 5) {
        x_drive = atoi(parsedStrings[0]);
        y_drive = atoi(parsedStrings[1]);
        x2_dome = atoi(parsedStrings[2]);
        y2_dome = atoi(parsedStrings[3]);
        #ifdef Using_DFPlayer
          sound_called = atoi(parsedStrings[4]);
        nJoyX = map(x_drive,200,0,-127,127);  
        nJoyY = map(y_drive,0,200,-127,127);  
      else {
        Serial.println("data no good");
    else {
      Serial.println("sorry no keyword");

  else { /////////////////////Write the motors to low if no signal is present for more than 500ms

      if (millis() - previousMillis >= timeout) {
        x_drive = 100;
        y_drive = 100;
        x2_dome = 100;
        y2_dome = 100;

        nJoyX = map(x_drive,200,0,-127,127);
        nJoyY = map(y_drive,0,200,-127,127);

void steering_servos(){
// Calculate Drive Turn output due to Joystick X input
if (nJoyY >= 0) {
  // Forward
  nMotPremixL = (nJoyX>=0)? 127.0 : (127.0 + nJoyX);
  nMotPremixR = (nJoyX>=0)? (127.0 - nJoyX) : 127.0;
} else {
  // Reverse
  nMotPremixL = (nJoyX>=0)? (127.0 - nJoyX) : 127.0;
  nMotPremixR = (nJoyX>=0)? 127.0 : (127.0 + nJoyX);

// Scale Drive output due to Joystick Y input (throttle)
nMotPremixL = nMotPremixL * nJoyY/128.0;
nMotPremixR = nMotPremixR * nJoyY/128.0;

// Now calculate pivot amount
// - Strength of pivot (nPivSpeed) based on Joystick X input
// - Blending of pivot vs drive (fPivScale) based on Joystick Y input
nPivSpeed = nJoyX;
fPivScale = (abs(nJoyY)>fPivYLimit)? 0.0 : (1.0 - abs(nJoyY)/fPivYLimit);

// Calculate final mix of Drive and Pivot
nMotMixL = (1.0-fPivScale)*nMotPremixL + fPivScale*( nPivSpeed);
nMotMixR = (1.0-fPivScale)*nMotPremixR + fPivScale*(-nPivSpeed);

  // Do something with x and y
nMotMixL = map(nMotMixL,-127,127,0,180);
nMotMixR = map(nMotMixR,127,-127,0,180);

void  Dome_servo(){

  dome_val = map(x2_dome,200,0,180,0);
  //dome_val = map(x2_dome,200,0,0,180); //Reverse rotation of dome
  /*  for debug only


void trim_servos(){

  x_drive = x_drive + x1_trim; //x2 trim
  x_drive = max(x_drive,0);
  x_drive = min(x_drive,200);
  y_drive = y_drive + y1_trim; //x2 trim
  y_drive = max(y_drive,0);
  y_drive = min(y_drive,200);

  x2_dome = x2_dome + x2_trim; //x2 trim
  x2_dome = max(x2_dome,0);
  x2_dome = min(x2_dome,200);
  y2_dome = y2_dome + y2_trim; //x2 trim
  y2_dome = max(y2_dome,0);
  y2_dome = min(y2_dome,200);

void Play_Sounds(){

  #ifdef Using_DFPlayer
    if (sound_called == 0) {
      if (PlayLabel == false){
        if ((sound_called > 0) && (sound_called < 9)) {
        if (sound_called == 9 ) {
          if ((millis()-Player_Timer) > 7000){
            Player_Timer = millis();

I'm going to ask you to post some additional information that might help us to identify the problem.

Please do this:

  1. When you encounter an error, you'll see a button on the right side of the orange bar in the Arduino IDE: Copy error messages (or the icon that looks like two pieces of paper at the top right corner of the black console window in the Arduino Web Editor). Click that button.
  2. Open a forum reply here by clicking the Reply button.
  3. Click the </> icon on the post composer toolbar. This will add the forum's code block markup (```) to your reply to make sure the error messages are correctly formatted.
    Code block
  4. Press Ctrl+V. This will paste the compilation output into the code block.
  5. Move the cursor outside of the code block markup before you add any additional text to your reply.
  6. Click the Reply button to post the output.

Not really. Library developers can define keywords for their libraries. The Arduino IDE colors the names matching the keywords of any installed library whenever they occur in the sketch.

Some library authors define all the keywords.

Some library authors forget to keep their keywords updated, so not all relevant names are colored.

Some library authors don't follow the documentation for how to correctly format their keywords, so the IDE doesn't recognize them.

Some library authors don't bother to define any keywords.

In addition, the IDE's keyword highlighting system is fairly crude. You might find that some keywords are highlighted even though you aren't using that library at the time. This becomes more common the more libraries you have installed.

So it's best to not assign too much importance to the color of things in the Arduino IDE. The keywords highlighting is purely cosmetic. It has no affect on the compiler.

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@darren2021, your topic has been moved to a more suitable location on the forum.

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I tried to reply doing as instructed but the text is too long. I then tried to attach a .pdf which included all the text but don't have the priveledge.

In the IDE, file -> preferences; disable verbose output during compilation (I suspect it's currently enabled); that should reduce the size.

Only idiots post PDFs of errors; you're not an idiot so you don't post a PDF :smiley: Just attach as text file (if you have to and if the forum allows you). The problem with PDFs is the line wrapping that can make it difficult to read.

I was able to get it to compile by installing:
GitHub - plerup/espsoftwareserial: Implementation of the Arduino software serial for ESP8266 (as libraries/SoftwareSerial)
GitHub - RoboticsBrno/ServoESP32: Generate RC servo signal on a selected pins with ESP32 device and Arduino framework. (as libraries/Servo)

DO NOT install arduino-esp32/libraries/BluetoothSerial at master · espressif/arduino-esp32 · GitHub

There were two places where NULL was used in place of "" (an empty string) and one place where NULL was used in place of '\0' (a null character).