/***************************************************
 Modified graphics demo for the ESP-WROVER-KIT and equivalent 
 projects using Ardiono-ESP32 with an ILI9341 LCD display
 By Martin Falatic
 ****************************************************/
/***************************************************
  This is our GFX example for the Adafruit ILI9341 Breakout and Shield
  ----> http://www.adafruit.com/products/1651

  Check out the links above for our tutorials and wiring diagrams
  These displays use SPI to communicate, 4 or 5 pins are required to
  interface (RST is optional)
  Adafruit invests time and resources providing this open source code,
  please support Adafruit and open-source hardware by purchasing
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.
  MIT license, all text above must be included in any redistribution
 ****************************************************/


#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"
#include "DHT.h"
#include "RTClib.h"
// For the ESP-WROVER_KIT, these are the default.
#define TFT_CS   5
#define TFT_DC   16
#define TFT_MOSI 23
#define TFT_CLK  18
#define TFT_RST  17
#define TFT_MISO 19
#define TFT_LED   4  // GPIO not managed by library

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_MOSI, TFT_CLK, TFT_RST, TFT_MISO);
//Thêm cài đặt cho moudule nhiệt độ, độ ẩm
// DHT setup
#define DHT_PIN 15
#define DHTTYPE DHT22 // Change to DHT22 if you're using DHT22
DHT dht(DHT_PIN, DHTTYPE);

//Thêm cài đặt cho moudule thời gian thực
// RTC setup
RTC_DS1307 rtc;



void backlighting(bool state) {
    if (state) {
        digitalWrite(TFT_LED, LOW);
    }
    else {
        digitalWrite(TFT_LED, HIGH);
    }
}

void setup() {
  Serial.begin(115200);
  Serial.println("ILI9341 Test!"); 

  tft.begin();
  pinMode(TFT_LED, OUTPUT);
  backlighting(true);
  //Khởi động hai module mới
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if (!rtc.isrunning()) {
    Serial.println("RTC lost power, let's set the time!");
    // Following line sets the RTC to the date & time this sketch was compiled
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  dht.begin();
  //----------------------------

  // read diagnostics (optional but can help debug problems)
  uint8_t x = tft.readcommand8(ILI9341_RDMODE);
  Serial.print("Display Power Mode: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDMADCTL);
  Serial.print("MADCTL Mode: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDPIXFMT);
  Serial.print("Pixel Format: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDIMGFMT);
  Serial.print("Image Format: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDSELFDIAG);
  Serial.print("Self Diagnostic: 0x"); Serial.println(x, HEX); 
}

void loop(void) {
  tft.fillScreen(ILI9341_BLACK);
  tft.setRotation(1); // Landscape orientation
  displayDateTime();
  displayTemperatureHumidity();

  delay(10000); // Update every 10 seconds
}



void displayDateTime() {
  DateTime now = rtc.now();

  tft.setTextColor(ILI9341_WHITE);  
  tft.setTextSize(2);
  tft.setCursor(10, 10);
  tft.print(now.hour(), DEC);
  tft.print(':');
  tft.print(now.minute(), DEC);
  tft.print(':');
  tft.print(now.second(), DEC);

  tft.setCursor(10, 40);
  tft.print(now.day(), DEC);
  tft.print('/');
  tft.print(now.month(), DEC);
  tft.print('/');
  tft.print(now.year(), DEC);
}

void displayTemperatureHumidity() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.setCursor(10, 70);
  tft.print("Temp: ");
  tft.print(t);
  tft.print(" *C");

  tft.setCursor(10, 100);
  tft.print("Humidity: ");
  tft.print(h);
  tft.print(" %");
}