#include <dht.h>
#include <LiquidCrystal_I2C.h>
#include <Arduino_FreeRTOS.h>

void led1(void *param);
void led2(void *param);

dht DHT;

#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2
#define DHT22_PIN 3
#define BUTTON_PIN 2

struct {
  uint32_t total;
  uint32_t ok;
  uint32_t crc_error;
  uint32_t time_out;
  uint32_t connect;
  uint32_t ack_l;
  uint32_t ack_h;
  uint32_t unknown;
} stat = { 0, 0, 0, 0, 0, 0, 0, 0};

LiquidCrystal_I2C lcd(0x27,16,2);

const int photoPin = A0;     
const int led1Pin =  13;
const int led2Pin = 12; 
float temp;    
int bri;        
 
TaskHandle_t Handle_aTask;
TaskHandle_t Handle_bTask;
 
void setup() {
  Serial.begin(115200);
 
  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  pinMode(photoPin, INPUT);

  
  attachInterrupt(digitalPinToInterrupt(BUTTON_PIN),isr,FALLING);

  lcd.init();                      
  lcd.backlight();
  lcd.setBacklight(HIGH);
 
  xTaskCreate(led2,"Task A",1024,NULL,tskIDLE_PRIORITY + 0,&Handle_aTask);
  xTaskCreate(led1,"Task B",1024,NULL,tskIDLE_PRIORITY + 0,&Handle_bTask);
 
  vTaskStartScheduler();
}

void isr()
{
  if(digitalRead(BUTTON_PIN)==HIGH)
  {
    led2=FALSE;
    led1=FALSE;
  }
  else
  {
    led2=TRUE;
    led1=TRUE;
  }
}

// Temperature warning
void led2(void *param) 
{
  (void) param;
  while(1)
  {
    int chk = DHT.read22(DHT22_PIN);
    temp=DHT.temperature;
    lcd.setCursor(0,0);
    lcd.print(temp);
    if (temp>=40) 
    {
      digitalWrite(led2Pin, HIGH);
      vTaskDelay(250/portTICK_PERIOD_MS);
      digitalWrite(led2Pin, LOW);
      vTaskDelay(250/portTICK_PERIOD_MS);
    }
    else
    {
      digitalWrite(led2Pin, LOW);
    }
    vTaskDelay(50/portTICK_PERIOD_MS);
  }
}
 
// Light control
void led1(void *param) 
{
  (void) param;
  while(1)
  {
    bri = analogRead(photoPin);
    if(bri>=450)
    {
      digitalWrite(led1Pin, HIGH);
    }
    else
    {
      digitalWrite(led1Pin, LOW);
    }
    vTaskDelay(50/portTICK_PERIOD_MS);
  }
}

void loop() 
{
  
}