227 lines
8.9 KiB
Arduino
227 lines
8.9 KiB
Arduino
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/*******************************************************************************
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* Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
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*
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* Permission is hereby granted, free of charge, to anyone
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* obtaining a copy of this document and accompanying files,
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* to do whatever they want with them without any restriction,
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* including, but not limited to, copying, modification and redistribution.
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* NO WARRANTY OF ANY KIND IS PROVIDED.
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*
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* This example sends a valid LoRaWAN packet with payload "Hello,
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* world!", using frequency and encryption settings matching those of
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* the The Things Network.
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*
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* This uses ABP (Activation-by-personalisation), where a DevAddr and
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* Session keys are preconfigured (unlike OTAA, where a DevEUI and
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* application key is configured, while the DevAddr and session keys are
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* assigned/generated in the over-the-air-activation procedure).
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*
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* Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in
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* g1, 0.1% in g2), but not the TTN fair usage policy (which is probably
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* violated by this sketch when left running for longer)!
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*
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* To use this sketch, first register your application and device with
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* the things network, to set or generate a DevAddr, NwkSKey and
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* AppSKey. Each device should have their own unique values for these
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* fields.
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*
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* Do not forget to define the radio type correctly in config.h.
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*
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*******************************************************************************/
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#include <lmic.h>
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#include <hal/hal.h>
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#include <SPI.h>
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// LoRaWAN NwkSKey, network session key
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// This is the default Semtech key, which is used by the early prototype TTN
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// network.
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static const PROGMEM u1_t NWKSKEY[16] = { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C };
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// LoRaWAN AppSKey, application session key
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// This is the default Semtech key, which is used by the early prototype TTN
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// network.
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static const u1_t PROGMEM APPSKEY[16] = { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C };
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// LoRaWAN end-device address (DevAddr)
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static const u4_t DEVADDR = 0x03FF0001 ; // <-- Change this address for every node!
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// These callbacks are only used in over-the-air activation, so they are
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// left empty here (we cannot leave them out completely unless
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// DISABLE_JOIN is set in config.h, otherwise the linker will complain).
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void os_getArtEui (u1_t* buf) { }
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void os_getDevEui (u1_t* buf) { }
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void os_getDevKey (u1_t* buf) { }
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static uint8_t mydata[] = "Hello, world!";
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static osjob_t sendjob;
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// Schedule TX every this many seconds (might become longer due to duty
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// cycle limitations).
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const unsigned TX_INTERVAL = 60;
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// Pin mapping
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const lmic_pinmap lmic_pins = {
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.nss = 6,
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.rxtx = LMIC_UNUSED_PIN,
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.rst = 5,
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.dio = {2, 3, 4},
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};
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void onEvent (ev_t ev) {
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Serial.print(os_getTime());
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Serial.print(": ");
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switch(ev) {
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case EV_SCAN_TIMEOUT:
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Serial.println(F("EV_SCAN_TIMEOUT"));
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break;
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case EV_BEACON_FOUND:
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Serial.println(F("EV_BEACON_FOUND"));
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break;
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case EV_BEACON_MISSED:
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Serial.println(F("EV_BEACON_MISSED"));
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break;
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case EV_BEACON_TRACKED:
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Serial.println(F("EV_BEACON_TRACKED"));
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break;
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case EV_JOINING:
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Serial.println(F("EV_JOINING"));
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break;
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case EV_JOINED:
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Serial.println(F("EV_JOINED"));
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break;
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case EV_RFU1:
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Serial.println(F("EV_RFU1"));
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break;
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case EV_JOIN_FAILED:
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Serial.println(F("EV_JOIN_FAILED"));
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break;
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case EV_REJOIN_FAILED:
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Serial.println(F("EV_REJOIN_FAILED"));
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break;
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case EV_TXCOMPLETE:
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Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
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if (LMIC.txrxFlags & TXRX_ACK)
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Serial.println(F("Received ack"));
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if (LMIC.dataLen) {
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Serial.println(F("Received "));
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Serial.println(LMIC.dataLen);
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Serial.println(F(" bytes of payload"));
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}
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// Schedule next transmission
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os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
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break;
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case EV_LOST_TSYNC:
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Serial.println(F("EV_LOST_TSYNC"));
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break;
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case EV_RESET:
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Serial.println(F("EV_RESET"));
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break;
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case EV_RXCOMPLETE:
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// data received in ping slot
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Serial.println(F("EV_RXCOMPLETE"));
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break;
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case EV_LINK_DEAD:
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Serial.println(F("EV_LINK_DEAD"));
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break;
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case EV_LINK_ALIVE:
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Serial.println(F("EV_LINK_ALIVE"));
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break;
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default:
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Serial.println(F("Unknown event"));
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break;
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}
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}
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void do_send(osjob_t* j){
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// Check if there is not a current TX/RX job running
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if (LMIC.opmode & OP_TXRXPEND) {
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Serial.println(F("OP_TXRXPEND, not sending"));
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} else {
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// Prepare upstream data transmission at the next possible time.
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LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0);
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Serial.println(F("Packet queued"));
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}
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// Next TX is scheduled after TX_COMPLETE event.
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}
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void setup() {
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Serial.begin(115200);
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Serial.println(F("Starting"));
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#ifdef VCC_ENABLE
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// For Pinoccio Scout boards
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pinMode(VCC_ENABLE, OUTPUT);
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digitalWrite(VCC_ENABLE, HIGH);
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delay(1000);
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#endif
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// LMIC init
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os_init();
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// Reset the MAC state. Session and pending data transfers will be discarded.
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LMIC_reset();
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// Set static session parameters. Instead of dynamically establishing a session
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// by joining the network, precomputed session parameters are be provided.
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#ifdef PROGMEM
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// On AVR, these values are stored in flash and only copied to RAM
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// once. Copy them to a temporary buffer here, LMIC_setSession will
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// copy them into a buffer of its own again.
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uint8_t appskey[sizeof(APPSKEY)];
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uint8_t nwkskey[sizeof(NWKSKEY)];
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memcpy_P(appskey, APPSKEY, sizeof(APPSKEY));
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memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY));
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LMIC_setSession (0x1, DEVADDR, nwkskey, appskey);
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#else
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// If not running an AVR with PROGMEM, just use the arrays directly
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LMIC_setSession (0x1, DEVADDR, NWKSKEY, APPSKEY);
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#endif
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#if defined(CFG_eu868)
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// Set up the channels used by the Things Network, which corresponds
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// to the defaults of most gateways. Without this, only three base
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// channels from the LoRaWAN specification are used, which certainly
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// works, so it is good for debugging, but can overload those
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// frequencies, so be sure to configure the full frequency range of
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// your network here (unless your network autoconfigures them).
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// Setting up channels should happen after LMIC_setSession, as that
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// configures the minimal channel set.
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// NA-US channels 0-71 are configured automatically
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LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
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LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI); // g-band
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LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
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LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
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LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
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LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
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LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
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LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
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LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK, DR_FSK), BAND_MILLI); // g2-band
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// TTN defines an additional channel at 869.525Mhz using SF9 for class B
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// devices' ping slots. LMIC does not have an easy way to define set this
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// frequency and support for class B is spotty and untested, so this
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// frequency is not configured here.
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#elif defined(CFG_us915)
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// NA-US channels 0-71 are configured automatically
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// but only one group of 8 should (a subband) should be active
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// TTN recommends the second sub band, 1 in a zero based count.
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// https://github.com/TheThingsNetwork/gateway-conf/blob/master/US-global_conf.json
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LMIC_selectSubBand(1);
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#endif
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// Disable link check validation
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LMIC_setLinkCheckMode(0);
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// TTN uses SF9 for its RX2 window.
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LMIC.dn2Dr = DR_SF9;
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// Set data rate and transmit power for uplink (note: txpow seems to be ignored by the library)
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LMIC_setDrTxpow(DR_SF7,14);
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// Start job
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do_send(&sendjob);
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}
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void loop() {
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os_runloop_once();
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}
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