// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

#include <SPI.h>
#include <MySensors.h>  
#include <DHT.h>

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define CHILD_ID_MOTION 2
#define CHILD_ID_LIGHT 3

#define LIGHT_SENSOR_ANALOG_PIN 0
int lastLightLevel;

#define HUMIDITY_SENSOR_DIGITAL_PIN 4

#define DIGITAL_INPUT_SENSOR 2   // The digital input you attached your motion sensor.  (Only 2 and 3 generates interrupt!)


DHT dht;
float lastTemp;
float lastHum;
boolean metric = false; 

unsigned long interval= 3000;//dht.getMinimumSamplingPeriod(); // the time we need to wait
unsigned long previousMillis=0; // millis() returns an unsigned long.
unsigned long SLEEP_TIME = 120000; // Sleep time between reports (in milliseconds)

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgMot(CHILD_ID_MOTION, V_TRIPPED);
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
uint16_t lastlux;

void setup()  
{ 
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

 // metric = getConfig().isMetric;

 pinMode(DIGITAL_INPUT_SENSOR, INPUT);      // sets the motion sensor digital pin as input
 }

void presentation()  
{ 
  // Send the Sketch Version Information to the Gateway
  sendSketchInfo("4-1 Sensor", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);
  present(CHILD_ID_MOTION, V_TRIPPED);
  present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
}

void loop()      
{  
  // Read digital motion value
  boolean tripped = digitalRead(DIGITAL_INPUT_SENSOR) == HIGH;
   
// only run loop if time has passed. 
unsigned long currentMillis = millis(); // grab current time       

 // check if "interval" time has passed
 if ((unsigned long)(currentMillis - previousMillis) >= interval) {

 
       send(msgMot.set(tripped?"1":"0")); 
              
  
      #ifdef MY_DEBUG
       Serial.print("Motion: ");
       Serial.println(tripped);
      #endif



 
  
  // Fetch temperatures from DHT sensor
  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    send(msgTemp.set(temperature, 1));
    #ifdef MY_DEBUG
    Serial.print("T: ");
    Serial.println(temperature);
    #endif
  }
 
  // Fetch humidity from DHT sensor
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      send(msgHum.set(humidity, 1));
      #ifdef MY_DEBUG
      Serial.print("H: ");
      Serial.println(humidity);
      #endif
  }   
 // Read lux from TEMT6000
  float lightLevel = analogRead(LIGHT_SENSOR_ANALOG_PIN) *  9.;  // 1000/1024
  if (int(lightLevel - lastLightLevel) > 10 || int(lastLightLevel - lightLevel) > 10) {
      send(msg.setSensor(CHILD_ID_LIGHT).set(lightLevel,1));
      lastLightLevel = lightLevel;
 }

   // save the "current" time
   previousMillis = millis();

 }  

  // Sleep until interrupt comes in on motion sensor. Send update every two minute.
  //sleep(digitalPinToInterrupt(DIGITAL_INPUT_SENSOR), CHANGE, SLEEP_TIME);

}