LightSensor.ino

/*
 * The MySensors Arduino library handles the wireless radio link and protocol
 * between your home built sensors/actuators and HA controller of choice.
 * The sensors forms a self healing radio network with optional repeaters. Each
 * repeater and gateway builds a routing tables in EEPROM which keeps track of the
 * network topology allowing messages to be routed to nodes.
 *
 * Created by Henrik Ekblad <[email protected]>
 * Copyright (C) 2013-2019 Sensnology AB
 * Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors
 *
 * Documentation: http://www.mysensors.org
 * Support Forum: http://forum.mysensors.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 *******************************
 *
 * REVISION HISTORY
 * Version 1.0 - Henrik EKblad
 *
 * DESCRIPTION
 * Example sketch showing how to measure light level using a LM393 photo-resistor
 * http://www.mysensors.org/build/light
 */
 
// Enable debug prints to serial monitor
#define MY_DEBUG
 
// Enable and select radio type attached
#define MY_RADIO_RF24
//#define MY_RADIO_NRF5_ESB
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95
 
#include <MySensors.h>
 
#define CHILD_ID_LIGHT 0
#define LIGHT_SENSOR_ANALOG_PIN 0
 
uint32_t SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)
 
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
int lastLightLevel;
 
 
void presentation()
{
    // Send the sketch version information to the gateway and Controller
    sendSketchInfo("Light Sensor", "1.0");
 
    // Register all sensors to gateway (they will be created as child devices)
    present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
}
 
void loop()
{
    int16_t lightLevel = (1023-analogRead(LIGHT_SENSOR_ANALOG_PIN))/10.23;
    Serial.println(lightLevel);
    if (lightLevel != lastLightLevel) {
        send(msg.set(lightLevel));
        lastLightLevel = lightLevel;
    }
    sleep(SLEEP_TIME);
}