ABPjoinLoWPower

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

    #define BUILTIN_LED 25
    #define uS_TO_S_FACTOR 1000000  /* Conversion factor for micro seconds to seconds */
    #define TIME_TO_SLEEP  60        /* Time ESP32 will go to sleep (in seconds) */

    RTC_DATA_ATTR int bootCount = 0;
     
    // the OLED used
    U8X8_SSD1306_128X64_NONAME_SW_I2C u8x8(/* clock=*/ 15, /* data=*/ 4, /* reset=*/ 16);
     
    // Schedule TX every this many seconds (might become longer due to duty
    // cycle limitations).
    const unsigned TX_INTERVAL = 60;
     
    //#define USE_JOINING
     
    #ifdef USE_JOINING
      // OTAA join keys
      // This EUI must be in little-endian format, so least-significant-byte
      // first. When copying an EUI from ttnctl output, this means to reverse
      // the bytes. For TTN issued EUIs the last bytes should be 0xD5, 0xB3,
      // 0x70.
      static const u1_t PROGMEM APPEUI[8] = { 0xXX, 0xXX, 0x00, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX };
      void os_getArtEui (u1_t* buf) {
        memcpy_P(buf, APPEUI, 8);
      }
     
      // This should also be in little endian format, see above.
      static const u1_t PROGMEM DEVEUI[8] = { 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX };
      void os_getDevEui (u1_t* buf) {
        memcpy_P(buf, DEVEUI, 8);
      }
     
      // This key should be in big endian format (or, since it is not really a
      // number but a block of memory, endianness does not really apply). In
      // practice, a key taken from ttnctl can be copied as-is.
      // The key shown here is the semtech default key.
      static const u1_t PROGMEM APPKEY[16] = { 0xXX, 0XX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX };
      void os_getDevKey (u1_t* buf) {
        memcpy_P(buf, APPKEY, 16);
      }
     
    #else
      // ABP keys
     
      // LoRaWAN NwkSKey, network session key (msb)
      static const PROGMEM u1_t NWKSKEY[] = { 0xXX, 0XX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX };
     
      // LoRaWAN AppSKey, application session key (msb)
      static const u1_t PROGMEM APPSKEY[] = { 0xXX, 0XX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX };
     
      // LoRaWAN end-device address (DevAddr)
      static const u4_t DEVADDR = 0xXXXXXXXXX; 
     
      void os_getArtEui (u1_t* buf) { }
      void os_getDevEui (u1_t* buf) { }
      void os_getDevKey (u1_t* buf) { }
     
    #endif
     
     
    static uint8_t mydata[] = {13, 37};
    static osjob_t sendjob;
     
     
    // Pin mapping
    const lmic_pinmap lmic_pins = {
      .nss = 18,
      .rxtx = LMIC_UNUSED_PIN,
      .rst = 14,
      .dio = {26, 33, 32},
    };
//dio = {26, 33, 32},

     
    void onEvent (ev_t ev) {
    //  //Serial.print(os_getTime());
      u8x8.setPowerSave(0);
      u8x8.begin();
      u8x8.setFont(u8x8_font_chroma48medium8_r);
      u8x8.drawString(0, 1, "radiona.org");
      u8x8.setCursor(0, 5);
      u8x8.printf("TIME %lu", os_getTime());
    //  //Serial.print(": ");
      switch (ev) {
        case EV_SCAN_TIMEOUT:
          //Serial.println(F("EV_SCAN_TIMEOUT"));
          u8x8.drawString(0, 7, "EV_SCAN_TIMEOUT");
          break;
        case EV_BEACON_FOUND:
          //Serial.println(F("EV_BEACON_FOUND"));
          u8x8.drawString(0, 7, "EV_BEACON_FOUND");
          break;
        case EV_BEACON_MISSED:
          //Serial.println(F("EV_BEACON_MISSED"));
          u8x8.drawString(0, 7, "EV_BEACON_MISSED");
          break;
        case EV_BEACON_TRACKED:
          //Serial.println(F("EV_BEACON_TRACKED"));
          u8x8.drawString(0, 7, "EV_BEACON_TRACKED");
          break;
        case EV_JOINING:
          //Serial.println(F("EV_JOINING"));
          u8x8.drawString(0, 7, "EV_JOINING");
          break;
        case EV_JOINED:
          //Serial.println(F("EV_JOINED"));
          u8x8.drawString(0, 7, "EV_JOINED ");
          LMIC_setDrTxpow(DR_SF7, 14); //added fixed SF after join for longer range messages
          // Disable link check validation (automatically enabled
          // during join, but not supported by TTN at this time).
          LMIC_setLinkCheckMode(0);
          break;
        case EV_RFU1:
          //Serial.println(F("EV_RFU1"));
          u8x8.drawString(0, 7, "EV_RFUI");
          break;
        case EV_JOIN_FAILED:
          //Serial.println(F("EV_JOIN_FAILED"));
          u8x8.drawString(0, 7, "EV_JOIN_FAILED");
          break;
        case EV_REJOIN_FAILED:
          //Serial.println(F("EV_REJOIN_FAILED"));
          u8x8.drawString(0, 7, "EV_REJOIN_FAILED");
          //break;
          break;
        case EV_TXCOMPLETE:
          //Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
          u8x8.drawString(0, 7, "EV_TXCOMPLETE");
          digitalWrite(BUILTIN_LED, LOW);
          if (LMIC.txrxFlags & TXRX_ACK) {
            //Serial.println(F("Received ack"));
            u8x8.drawString(0, 7, "Received ACK");
          }
          if (LMIC.dataLen) {
            //Serial.println(F("Received "));
            u8x8.drawString(0, 6, "RX ");
            //Serial.println(LMIC.dataLen);
            u8x8.setCursor(4, 6);
            u8x8.printf("%i bytes", LMIC.dataLen);
            //Serial.println(F(" bytes of payload"));
            u8x8.setCursor(0, 7);
            u8x8.printf("RSSI %d SNR %.1d", LMIC.rssi, LMIC.snr);
          }
          // Schedule next transmission
          os_setTimedCallback(&sendjob, os_getTime() + sec2osticks(TX_INTERVAL), do_send);
          delay(1000);
          //Increment boot number and print it every reboot
          ++bootCount;
          //Serial.println("Boot number: " + String(bootCount));
          u8x8.setPowerSave(1);
          /*
          First we configure the wake up source
          We set our ESP32 to wake up every 5 seconds
          */

           esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR);

            //This 4 lines did not have influence if I remove them I get the same
           esp_sleep_pd_config(ESP_PD_DOMAIN_MAX, ESP_PD_OPTION_OFF);
           esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_OFF);
           esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_SLOW_MEM, ESP_PD_OPTION_OFF);
           esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_FAST_MEM, ESP_PD_OPTION_OFF);

           esp_deep_sleep_start();

          break;
        case EV_LOST_TSYNC:
          //Serial.println(F("EV_LOST_TSYNC"));
          u8x8.drawString(0, 7, "EV_LOST_TSYNC");
          break;
        case EV_RESET:
          //Serial.println(F("EV_RESET"));
          u8x8.drawString(0, 7, "EV_RESET");
          break;
        case EV_RXCOMPLETE:
          // data received in ping slot
          //Serial.println(F("EV_RXCOMPLETE"));
          u8x8.drawString(0, 7, "EV_RXCOMPLETE");
          break;
        case EV_LINK_DEAD:
          //Serial.println(F("EV_LINK_DEAD"));
          u8x8.drawString(0, 7, "EV_LINK_DEAD");
          break;
        case EV_LINK_ALIVE:
          //Serial.println(F("EV_LINK_ALIVE"));
          u8x8.drawString(0, 7, "EV_LINK_ALIVE");
          break;
        default:
          //Serial.println(F("Unknown event"));
          u8x8.setCursor(0, 7);
          u8x8.printf("UNKNOWN EVENT %d", ev);
          break;
      }
    }
     
    void do_send(osjob_t* j) {
   //   digitalWrite(SXant,LOW);
      // Check if there is not a current TX/RX job running
      if (LMIC.opmode & OP_TXRXPEND) {
        //Serial.println(F("OP_TXRXPEND, not sending"));
        u8x8.drawString(0, 7, "OP_TXRXPEND, not sent");
      } else {
        // Prepare upstream data transmission at the next possible time.
        LMIC_setTxData2(1, mydata, sizeof(mydata) - 1, 0);
        //Serial.println(F("Packet queued"));
        u8x8.drawString(0, 7, "PACKET QUEUED");
        //digitalWrite(BUILTIN_LED, HIGH);
//        digitalWrite(SXant,HIGH);
      }
      // Next TX is scheduled after TX_COMPLETE event.
    }
     
     
    void setup() {
     
      //Serial.begin(115200);

      pinMode(14,OUTPUT);
      digitalWrite(14,HIGH);
      pinMode(16,OUTPUT);
      digitalWrite(16,HIGH);
      pinMode(1,INPUT);
      pinMode(3,INPUT);
     
      u8x8.begin();
      u8x8.setFont(u8x8_font_chroma48medium8_r);
      u8x8.drawString(0, 1, "radiona.org");
    //  pinMode(33,OUTPUT);
      
      SPI.begin(5, 19, 27);
     
      // LMIC init
      os_init();
      // Reset the MAC state. Session and pending data transfers will be discarded.
      LMIC_reset();
     
    #ifndef USE_JOINING
        #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
    #endif
     
      // 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
      // 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.
     
      // Disable link check validation
      //LMIC_setLinkCheckMode(0);
     
      // TTN uses SF9 for its RX2 window.
      //LMIC.dn2Dr = DR_SF9;
     
     
      LMIC_setDrTxpow(DR_SF7, 14); //set join at SF7
     
      pinMode(BUILTIN_LED, INPUT);
//      pinMode(SXant,OUTPUT);
      //esp_err_t rtc_gpio_hold_en(gpio_num_t gpio_num);
//      esp_err_t rtc_gpio_hold_en((gpio_num_t)SXant);

     // digitalWrite(BUILTIN_LED, LOW);
     
      // Start job (sending automatically starts OTAA too)
      do_send(&sendjob);
    }
     
    void loop() {
      os_runloop_once();
    }