first

.gitignore

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+node_modules

arduino/LoRaSender.ino

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+#include <ArduinoJson.h>
+#include <SPI.h>
+#include <LoRa.h>
+#include "DHT.h"
+
+#define DHTPIN 3
+#define DHTTYPE DHT11
+DHT dht(DHTPIN, DHTTYPE);
+
+int lightPin = A0;
+int counter = 0;
+int LEDPin = 4;
+
+void setup() {
+  Serial.begin(9600);
+  while (!Serial);
+
+  Serial.println("LoRa Sender");
+
+  if (!LoRa.begin(866E6)) {
+    Serial.println("Starting LoRa failed!");
+    while (1);
+  }
+  dht.begin();
+  LoRa.crc();
+  LoRa.setSyncWord(0x22);
+  // register the receive callback
+  LoRa.onReceive(onReceive);
+
+  // put the radio into receive mode
+  LoRa.receive();
+  //  attachInterrupt(digitalPinToInterrupt(2), lora, HIGH);
+  pinMode(LEDPin, OUTPUT);
+}
+
+void loop() {
+
+  StaticJsonBuffer<200> jsonBuf;
+
+  JsonObject& json = jsonBuf.createObject();
+
+  Serial.print("Sending packet: ");
+  Serial.println(counter);
+
+  float h = dht.readHumidity();
+  float t = dht.readTemperature();
+
+  json["count"] = counter;
+  json["temperature"] = t;
+  json["humidity"] = h;
+  json["light"] = analogRead(lightPin);
+
+  // send packet
+  LoRa.beginPacket();
+  json.printTo(LoRa);
+  LoRa.endPacket();
+
+  counter++;
+  LoRa.onReceive(onReceive);
+  LoRa.receive();
+
+  delay(1000);
+}
+
+void lora() {
+  Serial.println("Get Pin High");
+  int packetSize = LoRa.parsePacket();
+  if (packetSize) {
+    // received a packet
+    Serial.print("Received packet '");
+
+    // read packet
+    while (LoRa.available()) {
+      Serial.print((char)LoRa.read());
+    }
+
+    // print RSSI of packet
+    Serial.print("' with RSSI ");
+    Serial.println(LoRa.packetRssi());
+  }
+}
+
+void onReceive(int packetSize) {
+  // received a packet
+  Serial.print("Received packet '");
+  uint8_t d[packetSize];
+  // read packet
+  for (int i = 0; i < packetSize; i++) {
+    //    Serial.print((char)LoRa.read());
+    d[i] = LoRa.read();
+    Serial.print(d[i], HEX);
+    Serial.print(" ");
+  }
+
+  // print RSSI of packet
+  Serial.print("' with RSSI ");
+  Serial.println(LoRa.packetRssi());
+
+  if (int(d[packetSize - 1]) % 2 == 0) {
+    Serial.println("LED on");
+    digitalWrite(LEDPin, HIGH);
+  } else {
+    Serial.println("LED off");
+    digitalWrite(LEDPin, LOW);
+  }
+}
+

nodejs/package-lock.json

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+{
+  "name": "nodejs",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "dependencies": {
+    "async": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.4.1.tgz",
+      "integrity": "sha1-YqVrJ5yYoR0JhwlqAcw+6463u9c="
+    },
+    "bindings": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.2.1.tgz",
+      "integrity": "sha1-FK1hE4EtLTfXLme0ystLtyZQXxE="
+    },
+    "epoll": {
+      "version": "0.1.21",
+      "resolved": "https://registry.npmjs.org/epoll/-/epoll-0.1.21.tgz",
+      "integrity": "sha1-OCoIzZNOy7g2k+v0JfS2tPYXTZc="
+    },
+    "lodash": {
+      "version": "4.17.4",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+      "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
+    },
+    "nan": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.5.1.tgz",
+      "integrity": "sha1-1bAWkSUzJql6K77p5hxV2NYDUeI="
+    },
+    "onoff": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/onoff/-/onoff-1.1.2.tgz",
+      "integrity": "sha1-3NOdP9VZ2y0N9bzVTYzJ3x13R6I="
+    },
+    "spi-device": {
+      "version": "0.2.6",
+      "resolved": "https://registry.npmjs.org/spi-device/-/spi-device-0.2.6.tgz",
+      "integrity": "sha1-tmosN1gAsqgFQXZUIuFU4Ln8bE8="
+    },
+    "sx127x": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/sx127x/-/sx127x-0.0.0.tgz",
+      "integrity": "sha1-0/Ui6hAv39yUA2DxbxRWKPBabO4="
+    }
+  }
+}

nodejs/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "nodejs",
+  "version": "1.0.0",
+  "description": "",
+  "main": "receiver.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "sx127x": "0.0.0"
+  }
+}

nodejs/receiver.js

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+var SX127x = require('../index'); // or require('sx127x')
+
+var sx127x = new SX127x({
+  frequency: 866e6,
+  resetPin: 17,
+  dio0Pin: 4,
+  syncWord: 0x22,
+  crc: true
+});
+
+var count = 0;
+
+// open the device
+sx127x.open(function(err) {
+  console.log('open', err ? err : 'success');
+
+  if (err) {
+    throw err;
+  }
+
+  // add a event listener for data events
+  sx127x.on('data', function(data, rssi) {
+    //console.log('Origin Data: ', data, data.length);
+    console.log('data:', '\'' + data.toString() + '\'', rssi);
+    let json = {};
+    try{
+	    json = JSON.parse(data.toString());
+	    if(json.count % 5 == 0){
+		setTimeout(function(){
+	    	sx127x.write(new Buffer('Count is ' + json.count), err => {
+			console.log('write data', new Buffer('Count is ' + json.count));
+			if(err) console.log('send error' , err);
+			setRX()
+		});
+		}, 1000);
+	    }
+    }catch(e){}
+  });
+
+  setRX();
+});
+
+function setRX(){
+  // enable receive mode
+  sx127x.receive(function(err) {
+    console.log('receive', err ? err : 'success');
+  });
+}
+
+process.on('SIGINT', function() {
+  // close the device
+  sx127x.close(function(err) {
+    console.log('close', err ? err : 'success');
+    process.exit();
+  });
+});