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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);
+  }
+}
+