/******************************************************************************* * Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman * * Permission is hereby granted, free of charge, to anyone * obtaining a copy of this document and accompanying files, * to do whatever they want with them without any restriction, * including, but not limited to, copying, modification and redistribution. * NO WARRANTY OF ANY KIND IS PROVIDED. * * This example sends a valid LoRaWAN packet with payload "Hello, * world!", using frequency and encryption settings matching those of * the The Things Network. * * This uses ABP (Activation-by-personalisation), where a DevAddr and * Session keys are preconfigured (unlike OTAA, where a DevEUI and * application key is configured, while the DevAddr and session keys are * assigned/generated in the over-the-air-activation procedure). * * Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in * g1, 0.1% in g2), but not the TTN fair usage policy (which is probably * violated by this sketch when left running for longer)! * * To use this sketch, first register your application and device with * the things network, to set or generate a DevAddr, NwkSKey and * AppSKey. Each device should have their own unique values for these * fields. * * Do not forget to define the radio type correctly in config.h. * *******************************************************************************/ #include #include #include #include #include TinyGPS gps; SoftwareSerial ss(7,8); // LoRaWAN NwkSKey, network session key // This is the default Semtech key, which is used by the early prototype TTN // network. static const PROGMEM u1_t NWKSKEY[16] = { 0x6B, 0x36, 0xE9, 0x79, 0x8C, 0x01, 0x90, 0xF7, 0x99, 0x55, 0x8B, 0x29, 0xFB, 0x94, 0xFE, 0x81 }; // LoRaWAN AppSKey, application session key // This is the default Semtech key, which is used by the early prototype TTN // network. static const u1_t PROGMEM APPSKEY[16] = { 0x2D, 0xE5, 0x8B, 0x85, 0xBF, 0xCA, 0x0B, 0xD4, 0x27, 0xBF, 0x86, 0x37, 0x12, 0x1C, 0x88, 0x50 }; // LoRaWAN end-device address (DevAddr) static const u4_t DEVADDR = 0x26041CDB ; // <-- Change this address for every node! // 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) { } uint8_t coords[6]; static osjob_t sendjob; // Schedule TX every this many seconds (might become longer due to duty // cycle limitations). const unsigned TX_INTERVAL = 30; // Pin mapping const lmic_pinmap lmic_pins = { .nss = 10, .rxtx = LMIC_UNUSED_PIN, .rst = 5, .dio = {2, 3, 4}, }; void get_coords () { bool newData = false; unsigned long chars; unsigned short sentences, failed; float flat, flon; unsigned long age; // For one second we parse GPS data and report some key values for (unsigned long start = millis(); millis() - start < 1000;) { while (ss.available()) { char c = ss.read(); Serial.write(c); // uncomment this line if you want to see the GPS data flowing if (gps.encode(c)) { // Did a new valid sentence come in? newData = true; } } } if ( newData ) { gps.f_get_position(&flat, &flon, &age); flat = (flat == TinyGPS::GPS_INVALID_F_ANGLE ) ? 0.0 : flat; flon = (flon == TinyGPS::GPS_INVALID_F_ANGLE ) ? 0.0 : flon; } gps.stats(&chars, &sentences, &failed); int32_t lat = flat * 10000; int32_t lon = flon * 10000; // Pad 2 int32_t to 6 8uint_t, big endian (24 bit each, having 11 meter precision) coords[0] = lat; coords[1] = lat >> 8; coords[2] = lat >> 16; coords[3] = lon; coords[4] = lon >> 8; coords[5] = lon >> 16; } 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_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 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 { // Prepare upstream data transmission at the next possible time. get_coords(); LMIC_setTxData2(1, coords, sizeof(coords)-1, 0); Serial.println(F("Packet queued")); } // Next TX is scheduled after TX_COMPLETE event. } void setup() { Serial.begin(115200); Serial.println(F("Starting")); ss.begin(9600); #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(); // 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 // 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, 923200000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(1, 923400000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI); // g-band LMIC_setupChannel(2, 923600000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(3, 923800000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(4, 924000000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(5, 924200000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(6, 924400000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(7, 924600000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-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_SF7,14); // Start job do_send(&sendjob); } void loop() { os_runloop_once(); }