#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); // LoRaWAN NwkSKey, network session key static const PROGMEM u1_t NWKSKEY[16] = { 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0x0E, 0xCC, 0x93, 0x3C, 0xAB, 0x0C, 0x24, 0x52 }; // LoRaWAN AppSKey, application session key static const u1_t PROGMEM APPSKEY[16] = { 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xE6, 0x65, 0x0E, 0x4E, 0x14, 0x25, 0xF1, 0x5B }; // LoRaWAN end-device address (DevAddr) static const u4_t DEVADDR = 0xAAFFAAFF ; // 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 char mydata[14 + 1]; // "Packet = " + max(65536) static uint16_t packetNumber = 0; 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 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. sprintf(mydata, "Packet = %5u", packetNumber); LMIC_setTxData2(1, (xref2u1_t)mydata, sizeof(mydata)-1, 0); Serial.println(F("Packet queued")); packetNumber++; } // 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")); 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 setup() { // init packet counter sprintf(mydata, "Packet = %5u", packetNumber); Serial.begin(115200); Serial.println(F("Starting")); // set up the display u8x8.begin(); u8x8.setPowerSave(0); // 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. // 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 // disable channels (only use channel 0 - 868.1 MHz - for my single channel gateway!!!) for (int channel = 1; channel <= 8; channel++) { LMIC_disableChannel(channel); } // 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() { u8x8.setFont(u8x8_font_amstrad_cpc_extended_r); u8x8.drawString(0, 0, "TTN Demo ABP"); u8x8.drawString(0, 1, "www.octoate.de"); u8x8.drawString(0, 4, mydata); os_runloop_once(); }