#include #include // OLED #include // LMIC #include #include #include // OLED Pins #define OLED_SCL 15 // GPIO 15 #define OLED_SDA 4 // GPIO 4 #define OLED_RST 16 // GPIO 16 // LoRa Pins #define LoRa_RST 14 // GPIO 14 #define LoRa_CS 18 // GPIO 18 #define LoRa_DIO0 26 // GPIO 26 #define LoRa_DIO1 33 // GPIO 33 #define LoRa_DIO2 32 // GPIO 32 // define the display type that we use U8X8_SSD1306_128X64_NONAME_SW_I2C u8x8(/* clock=*/ OLED_SCL, /* data=*/ OLED_SDA, /* reset=*/ OLED_RST); // 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]= { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 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]= { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 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] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; void os_getDevKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16);} static uint8_t mydata[] = "Hello, world!"; static osjob_t sendjob; // Schedule TX every this many seconds (might become longer due to duty // cycle limitations). const unsigned TX_INTERVAL = 60; // Pin mapping const lmic_pinmap lmic_pins = { .nss = LoRa_CS, .rxtx = LMIC_UNUSED_PIN, .rst = LoRa_RST, .dio = { LoRa_DIO0, LoRa_DIO1, LoRa_DIO2 }, }; void showDatarate() { switch (LMIC.datarate) { case DR_SF7: u8x8.drawString(0, 2, "DR_SF7"); break; case DR_SF8: u8x8.drawString(0, 2, "DR_SF8"); break; case DR_SF9: u8x8.drawString(0, 2, "DR_SF9"); break; case DR_SF10: u8x8.drawString(0, 2, "DR_SF10"); break; case DR_SF11: u8x8.drawString(0, 2, "DR_SF11"); break; case DR_SF12: u8x8.drawString(0, 2, "DR_SF12"); break; } } void showFrequency() { //u8x8.drawString(0, 3, LMIC.txChnl); char frequency[10]; itoa(LMIC.freq, frequency, 10); u8x8.drawString(0, 3, frequency); } 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, not sending")); } else { showDatarate(); showFrequency(); // Prepare upstream data transmission at the next possible time. LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0); Serial.println(F("Packet queued")); } // Next TX is scheduled after TX_COMPLETE event. } 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")); u8x8.drawString(0, 1, "JOINING"); break; case EV_JOINED: Serial.println(F("EV_JOINED")); // Disable link check validation (automatically enabled // during join, but not supported by TTN at this time). u8x8.drawString(0, 1, "JOINED"); LMIC_setLinkCheckMode(0); 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; break; case EV_TXCOMPLETE: Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)")); if (LMIC.txrxFlags & TXRX_ACK) Serial.println(F("Received ack")); if (LMIC.dataLen) { Serial.println(F("Received ")); Serial.println(LMIC.dataLen); Serial.println(F(" bytes of 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("Unknown event")); break; } } void setup() { // set up the display u8x8.begin(); u8x8.setPowerSave(0); u8x8.setFont(u8x8_font_chroma48medium8_r); Serial.begin(115200); Serial.println(F("Starting")); #ifdef VCC_ENABLE // For Pinoccio Scout boards pinMode(VCC_ENABLE, OUTPUT); digitalWrite(VCC_ENABLE, HIGH); delay(1000); #endif // LMIC init os_init(); // Reset the MAC state. Session and pending data transfers will be discarded. LMIC_reset(); LMIC_setClockError(MAX_CLOCK_ERROR * 1 / 100); // 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. 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; // Set data rate and transmit power for uplink (note: txpow seems to be ignored by the library) //LMIC_setDrTxpow(DR_SF11,14); LMIC_setDrTxpow(DR_SF9,14); // Start job (sending automatically starts OTAA too) do_send(&sendjob); } void loop() { u8x8.setFont(u8x8_font_amstrad_cpc_extended_r); u8x8.drawString(0, 0, "TTN Demo ABP"); u8x8.drawString(0, 1, "www.octoate.de"); os_runloop_once(); }