Ein kleiner Rangetest. Es wird einfach die Entfernung zum Target übertragen.

Bei static const double target_lat = 53.000000, target_lon = 8.000000; bitte die eigenen Koordinaten eingeben. Unter static const uint32_t GPSBaud = 9600; bitte je nach GPS die Baudrate anpassen.

Bitte die Librarys von hier installieren!, hier habe ich auch den Original Code her:Simple_temp https://github.com/CongducPham/LowCostLoRaGw

http://www.libelium.com/development/waspmote/documentation/waspmote-lora-868mhz-915mhz-sx1272-networking-guide

http://arduiniana.org/libraries/tinygpsplus/

Folgendes wird benötigt:

• Arduino
• GPS
• Arduino
• SX1278 (Oder SX1276)

rangetest_TX.ino

/*
    temperature sensor on analog 8 to test the LoRa gateway
    extended version with AES and custom Carrier Sense features
 
    Copyright (C) 2016 Congduc Pham, University of Pau, France
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with the program.  If not, see <http://www.gnu.org/licenses/>.
 
 *****************************************************************************
   last update: Nov. 26th by C. Pham
*/
 
#include <TinyGPS++.h>
#include <SoftwareSerial.h>
/*
   This sample code demonstrates the normal use of a TinyGPS++ (TinyGPSPlus) object.
   It requires the use of SoftwareSerial, and assumes that you have a
   4800-baud serial GPS device hooked up on pins 4(rx) and 3(tx).
*/
static const int RXPin = 4, TXPin = 3;
static const uint32_t GPSBaud = 9600;
 
// The TinyGPS++ object
TinyGPSPlus gps;
 
// The serial connection to the GPS device
SoftwareSerial ss(RXPin, TXPin);
 
#include <SPI.h>
// Include the SX1272
#include "SX1272.h"
 
#define DEFAULT_DEST_ADDR 1
int e;
void setup()
{
  int e;
 
 
  Serial.begin(38400);
  ss.begin(GPSBaud);
  // Power ON the module
  sx1272.ON();
  // Set transmission mode and print the result
  e = sx1272.setMode(4);
 
  sx1272._enableCarrierSense = true;
 
  e = sx1272.setChannel(CH_00_433);
 
  sx1272._needPABOOST = true;
 
  e = sx1272.setPowerDBM(14);
 
  e = sx1272.setNodeAddress(8);
 
 
  delay(500);
  Serial.println("Setup ready");
}
uint32_t distancetoTarget = 0;
void loop(void)
{
  while (ss.available())
    gps.encode(ss.read());
 
 
 
  //sx1272.CarrierSense();
 
  sx1272.setPacketType(PKT_TYPE_DATA);
  if (gps.location.isValid())  {
    static const double target_lat = 53.000000, target_lon = 8.000000;
    distancetoTarget =
      (unsigned long)TinyGPSPlus::distanceBetween(
        gps.location.lat(),
        gps.location.lng(),
        target_lat,
        target_lon);
    //printInt(distanceKmToLondon, gps.location.isValid(), 9);
    Serial.println(distancetoTarget);
    char disbuffer [33];
    uint8_t message[100];
    itoa (distancetoTarget, disbuffer, 10);
 
    int r_size=sprintf((char*)message, disbuffer);
    e = sx1272.sendPacketTimeout(DEFAULT_DEST_ADDR, disbuffer, r_size,1000);
  }
  else  {
    e = sx1272.sendPacketTimeout(DEFAULT_DEST_ADDR, "No GPS");
    Serial.println("No GPS Fix");
  }
 
 
  delay(1000);
 
}