// Example 2 - Receive with an end-marker


boolean getConfig = true;
char SSID[30] = "xxx";
char pass[30] = "unset";

void setup() {
  Serial.begin(19200);
  Serial.println("<Arduino are ready>");
}

void loop() {
  //recvWithEndMarker();
  // showNewData();
  if (getConfig) {
    Serial.println("Staring...");
    displayConfigMenu();
    getConfigData();
  }
}
void displayConfigMenu() {
  Serial.println("");
  Serial.println("==========Config Menu=========");
  Serial.print("a) SSID:");
  Serial.println(SSID);
  Serial.print("b) Password:"); Serial.println(pass);
  Serial.println("w) Write config");
  Serial.println("x) quit Config Menu");
  Serial.println("y) redisplay menu");
  Serial.println("z) Reboot");
}

void getConfigData() {
  const byte numChars = 32;
  char receivedChars[numChars];   // an array to store the received data
  byte receivedBytes[32];
  boolean newData = false;
  uint16_t menuTimeout = millis() + 120000;
  char menuChar ;
  static byte ndx = 0;
  // char endMarker = '\n';
  //char endMarker = "\n";
  char endMarker = 0x03;
  char rc;
  while ( getConfig ) {
    // call 1 second script
    if (millis() > menuTimeout) {
      getConfig = false;
      Serial.println();
      Serial.println(".              Config menu timeout");
      Serial.println(".              Standard operations resuming ...");
      return;
    }
    strcpy(menuChar, "");
    strcpy(receivedChars, "");
    newData = false;
    Serial.setTimeout(10000);
    while (Serial.available() == 0 && millis() < menuTimeout ) {
      ;
    }Serial.println("something in serial buffer");
    menuChar = Serial.read();
    
    Serial.print("Enter data");
    while ( newData == false  && millis() < menuTimeout) {
      while (Serial.available() == 0 && millis() < menuTimeout ) {
        ;
      }
       Serial.readBytesUntil(endMarker,receivedBytes,numChars);
      newData = true;
    }
    //receivedChars= receivedBytes;
    sprintf(receivedChars,"%s",receivedBytes);
    Serial.println("");
    Serial.print("Menu:--");
    Serial.println(menuChar);
    Serial.print("Text:--");
    Serial.println(receivedChars);
  }
}


/* was from inside the getConfigData
  while (Serial.available() == 0 && millis() < menuTimeout){
  ;
  }
  if (Serial.available() > 0){
  rc = Serial.read();

  if (rc != endMarker) {
  receivedChars[ndx] = rc;
  ndx++;
  if (ndx >= numChars) {
    ndx = numChars - 1;
  }
  }
  else {
  receivedChars[ndx] = '\0'; // terminate the string
  ndx = 0;
  newData = true;
  }

  }*/

/*
  void recvWithEndMarker() {
  static byte ndx = 0;
  char endMarker = '\n';
  char rc;

  while (Serial.available() > 0 && newData == false) {
    rc = Serial.read();

    if (rc != endMarker) {
      receivedChars[ndx] = rc;
      ndx++;
      if (ndx >= numChars) {
        ndx = numChars - 1;
      }
    }
    else {
      receivedChars[ndx] = '\0'; // terminate the string
      ndx = 0;
      newData = true;
    }
  }
  }

  void showNewData() {
  if (newData == true) {
    Serial.print("This just in ... ");
    Serial.println(receivedChars);
    newData = false;
  }
  }
*/