void loop() {
  i++;
  delay(500);
  String tx_message = "Nr. of TX attempts: " + String(i);
  int m_length = tx_message.length();
  byte txbyte[m_length];
  tx_message.getBytes(txbyte, m_length + 1);
  Serial.println((char *)txbyte);
  ELECHOUSE_cc1101.SendData(txbyte, m_length);
}