#include <Arduino_FreeRTOS.h>
#include <semphr.h>
#include <DHT22.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define DHTPIN 5

SemaphoreHandle_t sMutex;

DHT22 dht(DHTPIN);

LiquidCrystal_I2C lcd(0x27, 20, 4);

int temp;
int temp_u;
int hume;
int hum_s;
int hume_s;

void sensorH(void* pvParameters){

  while(true){
    pinMode(A0, INPUT);
    temp = dht.getTemperature();
    hume = dht.getHumidity();
    hum_s = analogRead(A0);

    hume_s = map(hum_s, 0, 1023, 100, 0);

    if(xSemaphoreTake(sMutex, 10)==pdPASS){
      if(temp <= 10){
        lcd.setCursor(0, 0);
        lcd.print("Temp. baja: ");
        lcd.print(temp);
        lcd.print("   ");
        temp_u = temp;
      } else if (temp >= 18){
        lcd.setCursor(0, 0);
        lcd.print("Temp. alta: ");
        lcd.print(temp);
        lcd.print("    ");
        temp_u = temp;
      }else if(temp >= 10 && temp <= 18){
        lcd.setCursor(0,0);
        lcd.print("Temp.: ");
        lcd.print(temp);
        lcd.print("     ");
        temp_u = temp;
      } 

      if(hume <= 39){
        lcd.setCursor(0, 1);
        lcd.print("Hum. A. baja: ");
        lcd.print(hume);
        lcd.print("%");
        lcd.print("     ");
      } else if(hume >= 60){
        lcd.setCursor(0,1);
        lcd.print("Hum. A. alta: ");
        lcd.print(hume);
        lcd.print("%");
        lcd.print("     ");
      }else if(hume >= 40 && hume <= 60){
        lcd.setCursor(0,1);
        lcd.print("Hum. A.: ");
        lcd.print(hume);
        lcd.print("%");
        lcd.print("     ");
      }

      if(hume_s < 40){
        lcd.setCursor(0,2);
        lcd.print("Hum. S. baja: ");
        lcd.print(hume_s);
        lcd.print("%");
        lcd.print("     ");
      }else if(hume_s > 60){
        lcd.setCursor(0,2);
        lcd.print("Hum. S. alta: ");
        lcd.print(hume_s);
        lcd.print("%");
        lcd.print("     ");
      }else if(hume_s >= 40 && hume_s <= 60){
        lcd.setCursor(0,2);
        lcd.print("Hum. S.: ");
        lcd.print(hume_s);
        lcd.print("%");
        lcd.print("     ");
      }
      xSemaphoreGive(sMutex);
    }
    vTaskDelay(338);
  }
}

void bomba(void* pvParameters){

  while(true){
    if(xSemaphoreTake(sMutex, 10)== pdPASS){
      pinMode(4, OUTPUT);
      if(hume_s < 40){
        digitalWrite(4, HIGH);
        xSemaphoreGive(sMutex);
      } else if(hume_s >= 40){
        digitalWrite(4, LOW);
        xSemaphoreGive(sMutex);
      }
      vTaskDelay(100);
    }
  }
}

void setup() {
  Serial.begin(9600);
  pinMode(5, INPUT);
  lcd.init();
  lcd.backlight();

  sMutex = xSemaphoreCreateMutex();

  while(sMutex == NULL){}

  xTaskCreate(sensorH, "SENSOR", 128, NULL, 1, NULL);
  xTaskCreate(bomba, "BOMBA", 128, NULL, 1, NULL);

  vTaskStartScheduler();

}

void loop() {

}