Things/things/DeviceLdr.cpp

#include "DeviceLdr.h"

void DeviceLdr::deviceSetup() {
  pinMode(pin, INPUT);
}

void DeviceLdr::deviceRegister() {
  Homie.registerNode(ldrNode);
}

void DeviceLdr::deviceLoop() {
  if (millis() - lastSentLDR >= INTERVAL_LDR * 1000UL || lastSentLDR == 0) {
    int ldr_new = analogRead(pin);
    if (ldr_new != ldr) {
      ldr = ldr_new;
      float ldr_float = map(ldr, 0, 1023, 0, 10000) / 100.0;
      Serial.print("LDR: ");
      Serial.println(ldr_float);
      if (!Homie.setNodeProperty(ldrNode, "value", String(ldr_float), false)) {
        Serial.println("Sending failed");
      }
    } else {
      Serial.println("LDR value unchanged");
    }
    lastSentLDR = millis();
  }
}