/*************************************************************************************************
                                      PROGRAMMINFO
**************************************************************************************************
Funktion: LoRa BME280
**************************************************************************************************
Version: 06.07.2022
**************************************************************************************************
Board: Heltec LoRa WiFi 32
**************************************************************************************************
C++ Arduino IDE V1.8.19

**************************************************************************************************
Einstellungen:
https://dl.espressif.com/dl/package_esp32_index.json
http://dan.drown.org/stm32duino/package_STM32duino_index.json
http://arduino.esp8266.com/stable/package_esp8266com_index.json
**************************************************************************************************/



 // Libraries LoRaWAN / SPI / OLED Display

 #include <lmic.h>
 #include <hal/hal.h>
 #include <SPI.h>
 #include <U8x8lib.h>
 #include <U8g2lib.h>


 //Libraries for BME280

 #include <Adafruit_Sensor.h>
 #include <Adafruit_BME280.h>

 //BME280 definition festlegen

 #define SDA 21
 #define SCL 22

 TwoWire I2Cone = TwoWire(1);
 Adafruit_BME280 bme;

 //Paketzähler ID setzen / Strings festlegen

 int readingID = 0;
 int counter = 0;
 String LoRaMessage = "";

 float temperature = 0;
 float humidity = 0;
 float pressure = 0;

 // Zugangsdaten vom TTN / The Things Network
 // (muessen voher bei generiert worden sein)

 // LoRaWAN Network Session Key (drag and drop als msb )
 static const PROGMEM u1_t NWKSKEY[16] = { 0xDC, 0x5D, 0xA2, 0xD6, 0xFB, 0x78, 0x9A, 0x9E, 0xC6, 0x00, 0x9D, 0xBD, 0xA6, 0x5E, 0xxx, 0xxx };




 // LoRaWAN App Session Key (Drag and Drop als msb)
static const u1_t PROGMEM APPSKEY[16] = { 0x6E, 0xB3, 0xC4, 0x6F, 0x38, 0x2C, 0xD8, 0xB7, 0x61, 0x89, 0xD1, 0x87, 0xDE, 0xB9, 0xx, 0xxx };


 // LoRaWAN Device Addresse
static const u4_t DEVADDR = 0x260BB7xx;


 void startBME(){

   delay(1000);


   I2Cone.begin(SDA, SCL, 100000);
   bool status1 = bme.begin(0x76, &I2Cone);
   if (!status1) {
     Serial.println("Kein BME280 Sensor gefunden!");
     while (1);
   }

   delay(3000);

 }

 // Display passend konfigurieren

 U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ 15, /* data=*/ 4, /* reset=*/ 16);
 U8X8_SSD1306_128X64_NONAME_SW_I2C u8x8(15, 4, 16);



 // Um Grafiken umzuwandeln sollte diese in S/W sein die passende Groesse hier 128x64 Pixel haben
 // und als xbm exportiert werden.


 static unsigned char TK_OLED_SOURCE_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0x01, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x01,
   0x80, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x80, 0x01,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
   0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x01,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x07, 0x00, 0x00,
   0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x80, 0x07, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x01, 0x00,
   0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x80, 0x01, 0x00, 0x00, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x07, 0x00, 0x00, 0x78, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00,
   0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x18, 0x00, 0x00, 0x06, 0x00, 0x00, 0x80, 0x7f, 0x00, 0x00,
   0x00, 0x00, 0xfe, 0x01, 0x00, 0x00, 0x60, 0x00, 0x80, 0x07, 0x00, 0x00,
   0xe0, 0xff, 0x01, 0x00, 0x00, 0x80, 0xff, 0x07, 0x00, 0x00, 0xe0, 0x01,
   0x80, 0x01, 0x00, 0x00, 0xf8, 0xff, 0x07, 0x00, 0x00, 0xe0, 0xff, 0x1f,
   0x00, 0x00, 0x80, 0x01, 0x80, 0x01, 0x00, 0x00, 0xf8, 0xff, 0x07, 0x00,
   0x00, 0xe0, 0xff, 0x1f, 0x00, 0x00, 0x80, 0x01, 0x60, 0x00, 0x00, 0x00,
   0xf8, 0xff, 0x07, 0x00, 0x00, 0xe0, 0xff, 0x1f, 0x00, 0x00, 0x00, 0x06,
   0x60, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x07, 0x00, 0x00, 0xe0, 0xff, 0x1f,
   0x00, 0x00, 0x00, 0x06, 0x78, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x07, 0x00,
   0x00, 0xe0, 0xff, 0x1f, 0x00, 0x00, 0x00, 0x1e, 0x18, 0x00, 0x00, 0x00,
   0xf8, 0xff, 0x07, 0x00, 0x00, 0xe0, 0xff, 0x1f, 0x00, 0x00, 0x00, 0x18,
   0x18, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x07, 0x00, 0x00, 0xe0, 0xff, 0x1f,
   0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0xe0, 0xff, 0x01, 0x00,
   0x00, 0x80, 0xff, 0x07, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00,
   0x80, 0x7f, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x01, 0x00, 0x00, 0x00, 0x18,
   0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x78, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0,
   0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0,
   0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0,
   0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x78, 0x18, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x01, 0x18, 0x18, 0x80, 0x07, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x01, 0x18,
   0x18, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x60, 0x00, 0x18, 0x18, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x00, 0x18, 0x78, 0x00, 0x1e, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x1e,
   0x60, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x18, 0x00, 0x06, 0x60, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x06, 0x80, 0x01, 0x60, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x80, 0x01,
   0x80, 0x01, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x80, 0x07, 0x80, 0x01, 0x80, 0x07, 0x80, 0x07, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0xe0, 0x01, 0xe0, 0x01, 0x00, 0x06, 0x00, 0x1e,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x60, 0x00,
   0x00, 0x18, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x7e, 0x00, 0x18, 0x00, 0x00, 0x78, 0x00, 0xf8, 0x01, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x80, 0x1f, 0x00, 0x1e, 0x00, 0x00, 0xe0, 0x01, 0xe0,
   0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x80, 0x07, 0x00,
   0x00, 0x80, 0x01, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78,
   0x00, 0x80, 0x01, 0x00, 0x00, 0x80, 0x07, 0x00, 0x78, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x1e, 0x00, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x1e, 0x00,
   0x80, 0x07, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x01, 0x00, 0x78, 0x00, 0x00,
   0x00, 0x00, 0x78, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00,
   0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x01, 0x00, 0x00, 0x1e, 0x00,
   0x00, 0x78, 0x00, 0x00, 0x80, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e,
   0x00, 0x00, 0x00, 0xf8, 0x1f, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x80, 0x01,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00,
   0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0xe0, 0x01, 0x80, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0x01, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00  };



 #define uS_TO_S_FACTOR 1000000  // Umberechnungsfaktor Mikro Sekunden auf Sekunden
 #define TIME_TO_SLEEP  30      // Dauer des Tiefschlafzustands in Sekunden
 RTC_DATA_ATTR int bootCount = 0;



 // These callbacks are only used in over-the-air activation, so they are
 // left empty here (we cannot leave them out completely unless
 // DISABLE_JOIN is set in config.h, otherwise the linker will complain).
 void os_getArtEui (u1_t* buf) { }
 void os_getDevEui (u1_t* buf) { }
 void os_getDevKey (u1_t* buf) { }

 static osjob_t sendjob;

 // Senden alle 120 Sekunden
 const unsigned TX_INTERVAL = 60;

 // LoRa Heltec V2 Pin Map setzen

 const lmic_pinmap lmic_pins = { .nss = 18, .rxtx = LMIC_UNUSED_PIN, .rst = 14, .dio = {34, 26, 35}, };


 void do_send(osjob_t* j) {
   // Check if there is not a current TX/RX job running
   if (LMIC.opmode & OP_TXRXPEND) {
     Serial.println(F("OP_TXRXPEND, nicht senden"));
   } else {
     // Prepare upstream data transmission at the next possible time.


 startBME();

   temperature = bme.readTemperature();
   humidity = bme.readHumidity();
   pressure = bme.readPressure() / 100.0F;
   Serial.print("Senden des LoRa-Pakets an TTN Gatway: ");
   Serial.print("Senden der Daten:");

   //LoRaMessage = String(temperature) + "/" + String(humidity) + "/" + String(pressure);
   LoRaMessage = String(temperature) + " C" + "| " + String(humidity) +" %" + "| " + String(pressure) + " mB ";
   Serial.println(LoRaMessage);


     int test_length = LoRaMessage.length();
     uint8_t payload [test_length];
     for (int i = 0; i < test_length; i++){
         payload[i] = uint8_t (LoRaMessage[i]);
     }

 LMIC_setTxData2(1, payload, sizeof(payload)-1, 0);


     Serial.println(F("Paket in der Warteschlange"));
   }



   // Next TX is scheduled after TX_COMPLETE event.
 }

 void setup() {

  u8g2.begin();
  u8g2.clearBuffer();          // Internen Display Speicher komplett löschen
  u8g2.drawXBM(0,0, 128, 64, TK_OLED_SOURCE_bits);
  u8g2.sendBuffer();          // Inhalt des Speichers direkt auf das Display pushen

  delay (2000);

   u8x8.begin();
   u8x8.clear();
   u8x8.setFont(u8x8_font_chroma48medium8_r);
   u8x8.drawString(0, 2, "Read: BME280 " );
   delay (2000);

   u8x8.clear();
   u8x8.drawString(0, 2, " Push Message to");
   u8x8.drawString(0, 3, "   TTN Gateway  ");
   delay(1500);
   u8x8.clear();
   u8x8.drawString(0, 4, "     & sleep       ");
   u8x8.drawString(0, 6, "  ..for 60 sec  ");
   delay (1500);
   u8x8.clear();
   u8x8.begin();
   u8x8.setFont(u8x8_font_open_iconic_weather_4x4);
   u8x8.drawString(0, 2, "A"  );
   u8x8.setFont(u8x8_font_chroma48medium8_r);
   u8x8.drawString(4, 3, "Send Data.." );
   delay (3000);
   u8x8.clear();


   Serial.begin(115200);
   SPI.begin(5, 19, 27, 18);
   //Belegung Heltec LoRa V2 Board
   Serial.println(F("Booten..."));


   // LMIC init
   os_init();
   // Reset the MAC state. Session and pending data transfers will be discarded.
   LMIC_reset();

   // Set static session parameters. Instead of dynamically establishing a session
   // by joining the network, precomputed session parameters are be provided.
 #ifdef PROGMEM
   // On AVR, these values are stored in flash and only copied to RAM
   // once. Copy them to a temporary buffer here, LMIC_setSession will
   // copy them into a buffer of its own again.
   uint8_t appskey[sizeof(APPSKEY)];
   uint8_t nwkskey[sizeof(NWKSKEY)];
   memcpy_P(appskey, APPSKEY, sizeof(APPSKEY));
   memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY));
   LMIC_setSession (0x1, DEVADDR, nwkskey, appskey);
 #else
   // If not running an AVR with PROGMEM, just use the arrays directly
   LMIC_setSession (0x1, DEVADDR, NWKSKEY, APPSKEY);
 #endif

 #if defined(CFG_eu868)
   // Set up the channels used by the Things Network, which corresponds
   // to the defaults of most gateways. Without this, only three base
   // channels from the LoRaWAN specification are used, which certainly
   // works, so it is good for debugging, but can overload those
   // frequencies, so be sure to configure the full frequency range of
   // your network here (unless your network autoconfigures them).
   // Setting up channels should happen after LMIC_setSession, as that
   // configures the minimal channel set.
   // NA-US channels 0-71 are configured automatically

   LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
   LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI);      // g-band
   LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
   LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
   LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
   LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
   LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
   LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
   LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK,  DR_FSK),  BAND_MILLI);      // g2-band

   //LMIC_disableChannel(0); //Send only at channel 0
   LMIC_disableChannel(1);
   LMIC_disableChannel(2);
   LMIC_disableChannel(3);
   LMIC_disableChannel(4);
   LMIC_disableChannel(5);
   LMIC_disableChannel(6);
   LMIC_disableChannel(7);
   LMIC_disableChannel(8);

   // TTN defines an additional channel at 869.525Mhz using SF9 for class B
   // devices' ping slots. LMIC does not have an easy way to define set this
   // frequency and support for class B is spotty and untested, so this
   // frequency is not configured here.
 #elif defined(CFG_us915)
   // NA-US channels 0-71 are configured automatically
   // but only one group of 8 should (a subband) should be active
   // TTN recommends the second sub band, 1 in a zero based count.
   // <nowiki>https://github.com/TheThingsNetwork/gateway-conf/blob/master/US-global_conf.json</nowiki>
   LMIC_selectSubBand(1);
 #endif

   // Disable link check validation
   LMIC_setLinkCheckMode(0);

   // TTN uses SF9 for its RX2 window.
   LMIC.dn2Dr = DR_SF9;

   // Set data rate and transmit power for uplink (note: txpow seems to be ignored by the library)
   LMIC_setDrTxpow(DR_SF7, 14);

   // Start job
   do_send(&sendjob);

 }

 void loop() {
   os_runloop_once();
    }

 void onEvent (ev_t ev) {
   Serial.print(os_getTime());
   Serial.print(": ");
   switch (ev) {
     case EV_SCAN_TIMEOUT:
       Serial.println(F("EV_SCAN_TIMEOUT"));
       break;
     case EV_BEACON_FOUND:
       Serial.println(F("EV_BEACON_FOUND"));
       break;
     case EV_BEACON_MISSED:
       Serial.println(F("EV_BEACON_MISSED"));
       break;
     case EV_BEACON_TRACKED:
       Serial.println(F("EV_BEACON_TRACKED"));
       break;
     case EV_JOINING:
       Serial.println(F("EV_JOINING"));
       break;
     case EV_JOINED:
       Serial.println(F("EV_JOINED"));
       break;
     case EV_RFU1:
       Serial.println(F("EV_RFU1"));
       break;
     case EV_JOIN_FAILED:
       Serial.println(F("EV_JOIN_FAILED"));
       break;
     case EV_REJOIN_FAILED:
       Serial.println(F("EV_REJOIN_FAILED"));
       break;
     case EV_TXCOMPLETE:
       Serial.println(F("EV_TX komplett"));
       if (LMIC.txrxFlags & TXRX_ACK)
         Serial.println(F("Eingegangen ack"));
       if (LMIC.dataLen) {
         Serial.println(F("Eingegangen "));
         Serial.println(LMIC.dataLen);
         Serial.println(F(" bytes payload"));
       }
       // Schedule next transmission
       os_setTimedCallback(&sendjob, os_getTime() + sec2osticks(TX_INTERVAL), do_send);
       break;
     case EV_LOST_TSYNC:
       Serial.println(F("EV_LOST_TSYNC"));
       break;
     case EV_RESET:
       Serial.println(F("EV_RESET"));
       break;
     case EV_RXCOMPLETE:
       // data received in ping slot
       Serial.println(F("EV_RXCOMPLETE"));
       break;
     case EV_LINK_DEAD:
       Serial.println(F("EV_LINK_DEAD"));
       break;
     case EV_LINK_ALIVE:
       Serial.println(F("EV_LINK_ALIVE"));
       break;
     default:
       Serial.println(F("Unbekanntes Ereignis"));
       break;
   }

 }