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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 OTAA (Over-the-air activation), where where a DevEUI and
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* application key is configured, which are used in an over-the-air
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* activation procedure where a DevAddr and session keys are
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* assigned/generated for use with all further communication.
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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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* To use this sketch, first register your application and device with
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* the things network, to set or generate an AppEUI, DevEUI and AppKey.
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* Multiple devices can use the same AppEUI, but each device has its own
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* DevEUI and AppKey.
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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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// This EUI must be in little-endian format, so least-significant-byte
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// first. When copying an EUI from ttnctl output, this means to reverse
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// the bytes. For TTN issued EUIs the last bytes should be 0xD5, 0xB3,
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// 0x70.
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static const u1_t PROGMEM APPEUI[8]={ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}
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// This should also be in little endian format, see above.
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static const u1_t PROGMEM DEVEUI[8]={ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}
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// This key should be in big endian format (or, since it is not really a
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// number but a block of memory, endianness does not really apply). In
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// practice, a key taken from ttnctl can be copied as-is.
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// The key shown here is the semtech default key.
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static const u1_t PROGMEM APPKEY[16] = { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C };
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void os_getDevKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16);}
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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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// Disable link check validation (automatically enabled
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// during join, but not supported by TTN at this time).
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LMIC_setLinkCheckMode(0);
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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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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(9600);
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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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// Start job (sending automatically starts OTAA too)
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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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