/*FreeRTOS com display LCD e sensor de temperatura e umidade DHT11*/

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>

#define DHT_SENSOR1_PIN 5
#define DHT_SENSOR2_PIN 18
#define DHT_SENSOR3_PIN 19
#define DHTTYPE DHT22
#define Empty_line "                "

LiquidCrystal_I2C lcd(0x27, 16, 2);
DHT dht1(DHT_SENSOR1_PIN, DHTTYPE);
DHT dht2(DHT_SENSOR2_PIN, DHTTYPE);
DHT dht3(DHT_SENSOR3_PIN, DHTTYPE);

float h1, h2, h3, t1, t2, t3;

QueueHandle_t humidity;
QueueHandle_t temperature;

void setup() {
  // put your setup code here, to run once:
  pinMode(2, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(23, OUTPUT);
  lcd.init();
  lcd.backlight();
  lcd.clear();
  dht1.begin(); dht2.begin(); dht3.begin();
  humidity = xQueueCreate(1, sizeof(float));
  temperature = xQueueCreate(1, sizeof(float));
  xTaskCreate(ReadSensor01, "Ler sensor DHT11", 2048, NULL, 2, NULL);
  xTaskCreate(ReadSensor02, "Ler sensor DHT11", 2048, NULL, 2, NULL);
  xTaskCreate(ReadSensor03, "Ler sensor DHT11", 2048, NULL, 2, NULL);
  xTaskCreate(Display, "Imprime no LCD", 2048, NULL, 1, NULL);
}

void loop() {
  
}

void ReadSensor01(void *parameter){
  while(true){
    digitalWrite(2, HIGH);
    float h = dht1.readHumidity();
    float t = dht1.readTemperature();
    xQueueOverwrite(humidity, &h);
    xQueueOverwrite(temperature, &t);
    digitalWrite(2, LOW);
    vTaskDelay(2000/portTICK_PERIOD_MS); 
  }
}

void ReadSensor02(void *parameter){
  while(true){
    digitalWrite(4, HIGH);
    float h = dht2.readHumidity();
    float t = dht2.readTemperature();
    xQueueOverwrite(humidity, &h);
    xQueueOverwrite(temperature, &t);
    digitalWrite(4, LOW);
    vTaskDelay(3000/portTICK_PERIOD_MS); 
  }
}

void ReadSensor03(void *parameter){
  while(true){
    digitalWrite(23, HIGH);
    float h = dht3.readHumidity();
    float t = dht3.readTemperature();
    xQueueOverwrite(humidity, &h);
    xQueueOverwrite(temperature, &t);
    digitalWrite(23, LOW);
    vTaskDelay(2500/portTICK_PERIOD_MS); 
  }
}

void Display(void *parameter){
  float humi = 0;
  float temp = 0;
  while(true){
    if(xQueueReceive(humidity, &humi, 200)){
      lcd.setCursor(0, 0);
      lcd.print(Empty_line);
      lcd.setCursor(0, 0);
      lcd.print(" Humi = ");
      lcd.print(humi);
      lcd.print(" %");
    }
    if(xQueueReceive(temperature, &temp, 200)){
      lcd.setCursor(0, 1);
      lcd.print(Empty_line);
      lcd.setCursor(0, 1);
      lcd.print(" Temp = ");
      lcd.print(temp);
      lcd.print(" oC");
    }
  }
}