#include <OneWire.h>             // url: https://github.com/PaulStoffregen/OneWire
#include <DallasTemperature.h>   // url: https://github.com/milesburton/Arduino-Temperature-Control-Library

// #include <DHT.h>
// #include <Wire.h>

#define PRJ_NAME "Arduino Nano DS18B20"  // Project Name
#define VERSION "0.0.2"
#define PRINT_DASHED_LINES Serial.println(F("-------------------------------------------------------"));

#ifdef LED_BUILTIN
#define MY_LED LED_BUILTIN  // LED_BUILTIN -> On Board Led
#else
#define MY_LED 13  // On Board Led
#endif
// These are for the temperature
#define ONE_WIRE_BUS 2  // DS18B20 pin - Temperature Sensor
#define DHTPIN 3        // DHT22 pin   - Temperature & humidity Sensor
//#define DHTTYPE DHT22

// float TempDS18, TembDHT22;
// uint8_t Humidity;

OneWire oneWire(ONE_WIRE_BUS);        // Setup a oneWire instance to communicate with any OneWire device
DallasTemperature sensors(&oneWire);  // Pass oneWire reference to DallasTemperature library
 DeviceAddress insideDS18x20;          // DS18x20  arrays to hold device address
// DHT dht(DHTPIN, DHTTYPE);
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=


// ======================================================================
void ReadTemperature() {
  // Send the command to get temperatures
  sensors.requestTemperatures(); 

   float TempDS18 = sensors.getTempCByIndex(0);
  //float TempDS18 = sensors.getTempC(insideDS18x20);

  if (TempDS18 == DEVICE_DISCONNECTED_C) {
    TempDS18 = random(-1100, 5990) / 100.0;
    Serial.print("\r-[Error]: Could not find DS18B20. Send Random value for test - \n\r");
  }

  //float TembDHT22 = dht.readTemperature();
  //uint8_t Humidity = dht.readHumidity();
/*
  Serial.print("Temperature DS18B20 : ");
  Serial.print(TempDS18);
  Serial.print("\xB0""C");
  Serial.print(" - Fahrenheit : ");
  Serial.println(sensors.getTempFByIndex(0));
*/

  //print the temperature in Celsius
  Serial.print("Temperature DS18B20 : ");
  Serial.print(sensors.getTempCByIndex(0));
  Serial.print((char)176);//shows degrees character
  Serial.println("C");
  // PRINT_DASHED_LINES;
}  //== Close ReadTemperature() ====



// ======================================================================
// function to print a device address
void printAddress(DeviceAddress deviceAddress) {
  for (uint8_t i = 0; i < 8; i++) {
    // zero pad the address if necessary
    if (deviceAddress[i] < 16) Serial.print("0");
    Serial.print(deviceAddress[i], HEX);
  }
}  //== Close printAddress ==



// ======================================================================
void sensors_setup() {
  // ====================================================================
  sensors.begin();
  
  // Get ID of first sensor (at index 0)
  if (!sensors.getAddress(insideDS18x20, 0))
    Serial.println("Unable to find address for Device 0");

  // set the resolution to 10 bit
  sensors.setResolution(insideDS18x20, 10);

  Serial.print("Dallas Library Vers.: ");
  Serial.println(DALLASTEMPLIBVERSION);

  // show the addresses we found on the bus
  Serial.print("Device 0 Address    : ");
  printAddress(insideDS18x20);
  Serial.println();

  Serial.print("Device 0 Resolution : ");
  Serial.println(sensors.getResolution(insideDS18x20), DEC);

  // dht.begin();

  PRINT_DASHED_LINES;
  
}  //== Close sensors_setup() ==


// ======================================================================
void setup() {
  // ====================================================================
  Serial.begin(115200);
  delay(10);

  char buff[50];
  Serial.print("\r\n--------------- Booting -------------------------------\r\n");
  Serial.print(F( "Arduino IDE      : "));
  Serial.println( ARDUINO, DEC);          // arduino ide version
  Serial.print(F( "Compiler version : "));
  Serial.println(__VERSION__);            // gcc version
  Serial.print(F( "Filename         : "));
  Serial.println(__FILE__);               // file compiled
  sprintf(buff, "Firmware name    : %s v%s \r\n", PRJ_NAME, VERSION);
  Serial.print(buff);
  sprintf(buff, "Firmware Date    : %s \r\n", (__DATE__ ", " __TIME__));  // compilation date, time
  Serial.print(buff);
  Serial.print("Author           : Kernel Panic \r\n");
  PRINT_DASHED_LINES;
  pinMode(MY_LED, OUTPUT);
  sensors_setup();
  ReadTemperature();
}


// ======================================================================
void loop() {
  // ====================================================================
  static uint32_t last_tick;

  if (millis() - last_tick >= 5000) {
    last_tick = millis();
    ReadTemperature();
  }

  yield();
  digitalWrite(MY_LED, millis() % 500 < 40);
}