arduino_rfm95_TTN_ABP_join.ino

// MIT License
// https://github.com/gonzalocasas/arduino-uno-dragino-lorawan/blob/master/LICENSE
// Based on examples from https://github.com/matthijskooijman/arduino-lmic
// Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
// Adaptions Neumi

#include <lmic.h>
#include <hal/hal.h>

static const u1_t NWKSKEY[16] = { 0xF7, 0xA5, 0x02, 0x48, 0x9B, 0xD1, 0xF2, 0x92, 0x97, 0x62, 0x69, 0x4C, 0xDB, 0x2A, 0xE9, 0x7A };
static const u1_t APPSKEY[16] = { 0xB4, 0x0C, 0xEB, 0x93, 0x90, 0x3A, 0xF3, 0xED, 0x4D, 0xBE, 0x47, 0x16, 0x7F, 0x81, 0x81, 0x58 };
static const u4_t DEVADDR = 0x2601107A;

const unsigned TX_INTERVAL = 60;


void os_getArtEui (u1_t* buf) { }
void os_getDevEui (u1_t* buf) { }
void os_getDevKey (u1_t* buf) { }

static osjob_t sendjob;

const lmic_pinmap lmic_pins = {
  .nss = 10,
  .rxtx = LMIC_UNUSED_PIN,
  .rst = 5,
  .dio = {2, 3, LMIC_UNUSED_PIN},
};

void onEvent (ev_t ev) {
  if (ev == EV_TXCOMPLETE) {
    Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
    os_setTimedCallback(&sendjob, os_getTime() + sec2osticks(TX_INTERVAL), do_send);
  }
}

void do_send(osjob_t* j) {
  // Payload to send (uplink)
  static uint8_t message[] = "Hello, Medium!";
  // Check if there is not a current TX/RX job running
  if (LMIC.opmode & OP_TXRXPEND) {
    Serial.println("OP_TXRXPEND, not sending");
  } else {
    // Prepare upstream data transmission at the next possible time.
    LMIC_setTxData2(1, message, sizeof(message) - 1, 0);
    Serial.println("Sending uplink packet...");
  }
  // Next TX is scheduled after TX_COMPLETE event.
}

void setup() {
  Serial.begin(9600);
  Serial.println("Starting...");
  // LMIC init
  Serial.println("os_init");
  os_init();

  // Reset the MAC state. Session and pending data transfers will be discarded.
  Serial.println("LMIC_reset");
  LMIC_reset();

  // Set static session parameters.
  Serial.println("LMIC_setSession");
  LMIC_setSession (0x1, DEVADDR, NWKSKEY, APPSKEY);

  // Disable link check validation
  Serial.println("LMIC_setLinkCheckMode");
  LMIC_setLinkCheckMode(0);

  // TTN uses SF9 for its RX2 window.
  Serial.println("DR_SF9");
  LMIC.dn2Dr = DR_SF9;

  // Set data rate and transmit power for uplink (note: txpow seems to be ignored by the library)
  // LMIC_setDrTxpow(DR_SF12, 14);
  Serial.println("LMIC_setDrTxpow");

  LMIC_setDrTxpow(DR_SF7, 14);
  // LMIC_setDrTxpow(DR_SF12, 14);

  // Start job
  do_send(&sendjob);
  Serial.println("do send");
  digitalWrite(7, LOW);
}

void loop() {
  os_runloop_once();
}