LoRa range test w/ chirpstack gateway, dec 16th 2019

chirp-trial-encoder-11a.ino

/*******************************************************************************
   The Things Network - Sensor Data Example

   Example of sending a valid LoRaWAN packet with DHT22 temperature and
   humidity data to The Things Networ using a Feather M0 LoRa.

   Learn Guide: https://learn.adafruit.com/the-things-network-for-feather

   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 <lmic.h>
#include <hal/hal.h>
#include <SPI.h>
//#include <TinyGPS++.h>
#include <Adafruit_GPS.h>
//#define GPSSerial Serial1
#include "LoraMessage.h" // https://github.com/thesolarnomad/lora-serialization

// Connect to the GPS on the hardware port
//Adafruit_GPS GPS(&GPSSerial);

//#define GPSECHO false

//uint8_t coords[9];
//TinyGPSPlus gps;
//static const uint32_t GPSBaud = 9600;

// include the DHT22 Sensor Library
//#include "DHT.h"

// DHT digital pin and sensor type
//#define DHTPIN 10
//#define DHTTYPE DHT22

int messagecount = 0;

#define DONE 10

//
// 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


// This EUI must be in little-endian format, so least-significant-byte
// first. When copying an EUI from ttnctl output, this means to reverse
// the bytes. For TTN issued EUIs the last bytes should be 0xD5, 0xB3,
// 0x70.
static const u1_t PROGMEM APPEUI[8] = {0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22};
void os_getArtEui (u1_t* buf) {
  memcpy_P(buf, APPEUI, 8);
}

// This should also be in little endian format, see above.
static const u1_t PROGMEM DEVEUI[8] = {0x35, 0x95, 0xb5, 0xbd, 0xde, 0x86, 0x7c, 0x17};
void os_getDevEui (u1_t* buf) {
  memcpy_P(buf, DEVEUI, 8);
}

// This key should be in big endian format (or, since it is not really a
// number but a block of memory, endianness does not really apply). In
// practice, a key taken from the TTN console can be copied as-is.
static const u1_t PROGMEM APPKEY[16] = { 0x58, 0x0c, 0x7a, 0xc9, 0x85, 0x95, 0x99, 0xf2, 0xca, 0xcb, 0x79, 0x15, 0x0a, 0x45, 0x6f, 0x39 };
void os_getDevKey (u1_t* buf) {
  memcpy_P(buf, APPKEY, 16);
}


// 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 = 10;

// 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"));
      {
        u4_t netid = 0;
        devaddr_t devaddr = 0;
        u1_t nwkKey[16];
        u1_t artKey[16];
        LMIC_getSessionKeys(&netid, &devaddr, nwkKey, artKey);
        Serial.print("netid: ");
        Serial.println(netid, DEC);
        Serial.print("devaddr: ");
        Serial.println(devaddr, HEX);
        Serial.print("artKey: ");
        for (size_t i = 0; i < sizeof(artKey); ++i) {
          if (i != 0)
            Serial.print("-");
          Serial.print(artKey[i], HEX);
        }
        Serial.println("");
        Serial.print("nwkKey: ");
        for (size_t i = 0; i < sizeof(nwkKey); ++i) {
          if (i != 0)
            Serial.print("-");
          Serial.print(nwkKey[i], HEX);
        }
        Serial.println("");
      }
      // Disable link check validation (automatically enabled
      // during join, but because slow data rates change max TX
      // size, we don't use it in this example.
      LMIC_setLinkCheckMode(0);
      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;
      break;
    case EV_TXCOMPLETE:
      Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));

digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(10);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(10);


      if (LMIC.txrxFlags & TXRX_ACK) {
        Serial.println(F("Received ack"));

        
        for (int k=0;k<2;k++) {
digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(10);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(10);
}


      }
      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
   /*
      int32_t lati = gps.location.lat() * 10000;
      int32_t lon = gps.location.lng() * 10000;
      int32_t altitudeGPS = gps.altitude.meters(); // int16_t
      int8_t hdopGPS = gps.hdop.value(); 
*/
  

    LoraMessage message;
    message
    .addUnixtime(messagecount);


      Serial.println(messagecount);
      //Serial.println(lon);
      //Serial.println(altitudeGPS);
      //Serial.println(hdopGPS);

       LMIC_setTxData2(1,message.getBytes(), message.getLength(), 1);

//delay(3000);

/*
for (int k=0;k<2;k++) {
digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(100);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(100);
}
*/

  messagecount++;
  
//delete message;

    // 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), 0);

   
  //  digitalWrite(DONE, LOW);

  }
  // Next TX is scheduled after TX_COMPLETE event.
}

void setup() {

 pinMode(LED_BUILTIN, OUTPUT);
 
  //pinMode(DONE, OUTPUT);
   //digitalWrite(DONE, HIGH);
 delay(5000);
  //while (! Serial);
  Serial.begin(9600);
  Serial.println(F("Starting"));



  delay(1000);

  // Ask for firmware version

  
  //dht.begin();

  // LMIC init
  os_init();
  // Reset the MAC state. Session and pending data transfers will be discarded.
  LMIC_reset();
  // Disable link-check mode and ADR, because ADR tends to complicate testing.
  LMIC_setLinkCheckMode(0);
  // Set the data rate to Spreading Factor 7.  This is the fastest supported rate for 125 kHz channels, and it
  // minimizes air time and battery power. Set the transmission power to 14 dBi (25 mW).
  LMIC_setDrTxpow(DR_SF7, 14);  // is DR_SF12 "long range"???
  
  // in the US, with TTN, it saves join time if we start on subband 1 (channels 8-15). This will
  // get overridden after the join by parameters from the network. If working with other
  // networks or in other regions, this will need to be changed.
  LMIC_selectSubBand(1);

  // Start job (sending automatically starts OTAA too)
  do_send(&sendjob);
}

void loop() {
  // we call the LMIC's runloop processor. This will cause things to happen based on events and time. One
  // of the things that will happen is callbacks for transmission complete or received messages. We also
  // use this loop to queue periodic data transmissions.  You can put other things here in the `loop()` routine,
  // but beware that LoRaWAN timing is pretty tight, so if you do more than a few milliseconds of work, you
  // will want to call `os_runloop_once()` every so often, to keep the radio running.
  os_runloop_once();

  // if millis() or timer 
  
}

// degree-minute format to decimal-degrees
double convertDegMinToDecDeg (float degMin) {
  double min = 0.0;
  double decDeg = 0.0;
 
  //get the minutes, fmod() requires double
  min = fmod((double)degMin, 100.0);
 
  //rebuild coordinates in decimal degrees
  degMin = (int) ( degMin / 100 );
  decDeg = degMin + ( min / 60 );
 
  return decDeg;
}