/******************************************************************************* * The Things Network - ABP Feather * * Example of using an Adafruit Feather M0 and DHT22 with a * single-channel TheThingsNetwork gateway. * * This uses ABP (Activation by Personalization), where session keys for * communication would be assigned/generated by TTN and hard-coded on the device. * * Learn Guide: https://learn.adafruit.com/lora-pi * * Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman * Copyright (c) 2018 Terry Moore, MCCI * Copyright (c) 2018 Brent Rubell, Adafruit Industries * * 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. *******************************************************************************/ #include #include #include // include the DHT22 Sensor Library #include "DHT.h" // DHT digital pin and sensor type #define DHTPIN 10 #define DHTTYPE DHT22 // // For normal use, we require that you edit the sketch to replace FILLMEIN // with values assigned by the TTN console. However, for regression tests, // we want to be able to compile these scripts. The regression tests define // COMPILE_REGRESSION_TEST, and in that case we define FILLMEIN to a non- // working but innocuous value. // #ifdef COMPILE_REGRESSION_TEST # define FILLMEIN 0 #else # warning "You must replace the values marked FILLMEIN with real values from the TTN control panel!" # define FILLMEIN (#dont edit this, edit the lines that use FILLMEIN) #endif // LoRaWAN NwkSKey, network session key static const PROGMEM u1_t NWKSKEY[16] = { FILLMEIN }; // LoRaWAN AppSKey, application session key static const u1_t PROGMEM APPSKEY[16] = { FILLMEIN }; // LoRaWAN end-device address (DevAddr) // See http://thethingsnetwork.org/wiki/AddressSpace // The library converts the address to network byte order as needed. #ifndef COMPILE_REGRESSION_TEST static const u4_t DEVADDR = 0xFILLMEIN; #else static const u4_t DEVADDR = 0; #endif // 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 arduino-lmic/project_config/lmic_project_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) { } // payload to send to TTN gateway static uint8_t payload[5]; 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 for Adafruit Feather M0 LoRa const lmic_pinmap lmic_pins = { .nss = 8, .rxtx = LMIC_UNUSED_PIN, .rst = 4, .dio = {3, 6, LMIC_UNUSED_PIN}, .rxtx_rx_active = 0, .rssi_cal = 8, // LBT cal for the Adafruit Feather M0 LoRa, in dB .spi_freq = 8000000, }; // init. DHT DHT dht(DHTPIN, DHTTYPE); 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; /* || This event is defined but not used in the code. No || point in wasting codespace on it. || || 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; /* || This event is defined but not used in the code. No || point in wasting codespace on it. || || case EV_SCAN_FOUND: || Serial.println(F("EV_SCAN_FOUND")); || break; */ case EV_TXSTART: Serial.println(F("EV_TXSTART")); break; default: Serial.print(F("Unknown event: ")); Serial.println((unsigned) ev); 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 { // read the temperature from the DHT22 float temperature = dht.readTemperature(); Serial.print("Temperature: "); Serial.print(temperature); Serial.println(" *C"); // adjust for the f2sflt16 range (-1 to 1) temperature = temperature / 100; // read the humidity from the DHT22 float rHumidity = dht.readHumidity(); Serial.print("%RH "); Serial.println(rHumidity); // adjust for the f2sflt16 range (-1 to 1) rHumidity = rHumidity / 100; // float -> int // note: this uses the sflt16 datum (https://github.com/mcci-catena/arduino-lmic#sflt16) uint16_t payloadTemp = LMIC_f2sflt16(temperature); // int -> bytes byte tempLow = lowByte(payloadTemp); byte tempHigh = highByte(payloadTemp); // place the bytes into the payload payload[0] = tempLow; payload[1] = tempHigh; // float -> int uint16_t payloadHumid = LMIC_f2sflt16(rHumidity); // int -> bytes byte humidLow = lowByte(payloadHumid); byte humidHigh = highByte(payloadHumid); payload[2] = humidLow; payload[3] = humidHigh; // prepare upstream data transmission at the next possible time. // transmit on port 1 (the first parameter); you can use any value from 1 to 223 (others are reserved). // don't request an ack (the last parameter, if not zero, requests an ack from the network). // Remember, acks consume a lot of network resources; don't ask for an ack unless you really need it. LMIC_setTxData2(1, payload, sizeof(payload)-1, 0); } // Next TX is scheduled after TX_COMPLETE event. } void setup() { delay(5000); while (!Serial); Serial.begin(115200); delay(100); Serial.println(F("Starting")); // 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. // 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 (0x13, DEVADDR, nwkskey, appskey); // We'll disable all 72 channels used by TTN for (int c = 0; c < 72; c++){ LMIC_disableChannel(c); } // We'll only enable Channel 16 (905.5Mhz) since we're transmitting on a single-channel LMIC_enableChannel(16); // 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(); }