Arduino DMXTestbox Code

#include <DMXSerial.h>
#define Console Serial
char Mode_const = '0';
long start = 0;
long ende = 0;
bool rightadress = false;

void setup() {

  Serial.begin(9600);
  Serial.setTimeout(100);
  while (! Serial);
  Console.println("pls enter Mode: r for Recieve; s for Send; b for break");
  //DMXSerial.resetUpdated();
}

static constexpr const uint16_t channels = 512;
static constexpr const uint16_t channels_per_line = 32;
static constexpr const uint16_t channels_per_group = 8;

void printByte(uint8_t b) {
}

void loop() {
    while (! Serial);
    char Mode = Serial.read();

    if (Mode == 'r' || Mode =='R') {
      //Setup for recieving
      rightadress = false;
      Serial.println("rec");
      DMXSerial.init(DMXReceiver);
      Mode_const = '1';
    }

    if (Mode == 's' || Mode == 'S') {
      //Setup for sending
      DMXSerial.init(DMXController);
      Mode_const = '2';

    }
    if (Mode == 'b' || Mode == 'B') {
      //to stop everything
      rightadress = false;
      Mode_const = '0';
      Console.println("stopping...");
    }

    if (Mode_const == '1'){
      //actual recieving
      if (DMXSerial.dataUpdated()) {
      DMXSerial.resetUpdated();
      // For the dumb consoles (like the Arduino IDE serial console), add
      // some newlines to separate subsequent dumps
      Console.println();
      Console.println();

      for (uint16_t i = 0; i < channels; ++i) {
        // Channels are 1-based
        uint16_t channel = i + 1;

        if (i % channels_per_line == 0) {
          Console.println();
          // Prefix each line with the DMX channel number, adding spaces to align
       if (channel < 100) Console.write(' ');
       if (channel < 10) Console.write(' ');
       Console.print(channel);
       Console.print(F(": "));
        } else {
          // Print one space between channels, and two spaces between each group
          if (i % channels_per_group == 0)
          Console.write(' ');
        Console.write(' ');
      }

      // Print the actual channel value, padding with a zero if needed
      uint8_t value = DMXSerial.read(channel);
      if (value < 0x10) Console.write('0');
      Console.print(value, HEX);
    }
    }
    else {
      Serial.println("");
      Serial.println("no DMX");
      delay(500);
  }

    }

    if (Mode_const == '2'){
      //actual sending

      while(rightadress == false) {
        Serial.read();
        Serial.println("test1");
        while(!Serial) {};
        Serial.println("start:");
        while(!Serial.available()){}
        start = Serial.parseInt();
        while(!Serial) {};
                Serial.read();

        Serial.println("ende::");
        while(!Serial.available()){}
        ende = Serial.parseInt();
        Serial.println(start);
        Serial.println("");
        Serial.println(ende);
        if (start <= 512 && start > 0 && ende <= 512 && ende > 0){
          while(!Serial) {};
          rightadress = true;
          Serial.println("test2");

        }
        else {
          Serial.println("one (or more) adresses weren't possible");
          while(!Serial) {};

        }

      }
        for (int i = start; i <= ende; i++) {
          DMXSerial.write(i, 255);
          Serial.println("test3");
      }


    }

}