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Transciever RFM95W  

Arduino Pro Mini ATmega328P 3,3 volt 8MHz

Sensor DS18B20

3,6 Volt LiOn Battery

Charge og controller til Solar panel

//Arduino Code 1.8.8

/* TX LoRa Pro Mini RFM95W Green board

*/

#include "LowPower.h"

#include <LoRa.h>      

#include <OneWire.h>

#include <DallasTemperature.h>

// Data wire is plugged into port 9 on the Pro Mini

#define ONE_WIRE_BUS 9

// Setup a oneWire instance to communicate with any OneWire devices

OneWire oneWire(ONE_WIRE_BUS);

#define TEMPERATURE_PRECISION 12

// Pass our oneWire reference to Dallas Temperature.

DallasTemperature sensors(&oneWire);

// arrays to hold device address

DeviceAddress DS18B20_1;

// SPI LoRa Radio Pro Mini

const int LORA_SCK = 13;      

const int LORA_MISO = 12;   

const int LORA_MOSI = 11;   

const int LORA_CS = 10;    

const int LORA_RST = 5;   //????  LoRa.setPins(LORA_CS, LORA_RST, LORA_IRQ)

const int LORA_IRQ = 32 ;  //????? LoRa.setPins(LORA_CS, LORA_RST, LORA_IRQ)

//void(* resetFunc) (void) = 0; //declare reset function @ address 0

//int counter = 0;

uint8_t Node;

float Temp;

#define R1 1500000L

#define R2 420000L

/*void Resetarduino()

{

  Serial.println("resetting");

  resetFunc(); //call

  delay(1000);

}*/

void setup() {

  analogReference(INTERNAL);// use the 1.1 V internal reference for battery level measuring PRO MINI

  if (!sensors.getAddress( DS18B20_1, 0)) Serial.println("Unable to find address for Device 0");

    sensors.setResolution(DS18B20_1, TEMPERATURE_PRECISION);

  pinMode(ONE_WIRE_BUS,INPUT_PULLUP); 

  //Serial.begin(115200);

  //while (!Serial);

  //Serial.println("LoRa TX");

  LoRa.setPins(LORA_CS, LORA_RST, LORA_IRQ);        

  if (!LoRa.begin(866E6)) {

    //Serial.println("Starting LoRa failed!");

    while (1);

  }

  // The larger the spreading factor the greater the range but slower data rate

  // Send and receive radios need to be set the same

  LoRa.setSpreadingFactor(12); // ranges from 6-12, default 7 see API docs

      // Change the transmit power of the radio

    // Default is LoRa.setTxPower(17, PA_OUTPUT_PA_BOOST_PIN);

    // Most modules have the PA output pin connected to PA_BOOST, gain 2-17

    // TTGO and some modules are connected to RFO_HF, gain 0-14

    // If your receiver RSSI is very weak and little affected by a better antenna, change this!

  //LoRa.setTxPower(17, PA_OUTPUT_RFO_PIN);

  LoRa.setTxPower(17, PA_OUTPUT_PA_BOOST_PIN);

}

float battery()

{

  int raw = analogRead(A0);

  float val = raw/1024.0; 

  return val * (R1 + R2)/R2;

 }

void GetdataTemperature()

{

  LoRa.idle(); 

  sensors.requestTemperatures(); // Send the command to get temperatures

  Temp = sensors.getTempC(DS18B20_1); 

  Node = DS18B20_1[2];

  delay(50);

/*  Serial.print("Reading: ");

  Serial.print("Temp.: ");

  Serial.print(Temp);

  Serial.print(" Node: ");

  Serial.print(Node);       

       switch (Node)

         {

        case 89:

            Serial.println(" 5p6mj node 1");

        break;

       case 201:

            Serial.println(" 5p6mj node 2");

        break;

        default:

            Serial.println(" new one");

        break;        

        }8*/

  senddata();

  LoRa.sleep();   

}

void senddata() {

    //counter++;

    float voltage = battery();

   // Serial.print("Sending packet: ");

   // Serial.println(counter);

    // send packet

    LoRa.beginPacket();

    LoRa.print(voltage);

    LoRa.print("c");

    LoRa.print(Temp);

    LoRa.print("t");

    LoRa.print(Node);

    LoRa.print("n");

    LoRa.endPacket();

    delay(50);

}

void loop() {

  LowPower.powerDown(SLEEP_8S, ADC_OFF, BOD_OFF);

  GetdataTemperature();

  delay(10);   

}