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


#define RED_LED 2
#define GREEN_LED 3
#define DHT_PIN 8

dht DHT;
SemaphoreHandle_t semaTemp;

void TaskReadTemperature(void *pvParameters) {
  (void) pvParameters;

  for (;;) {
    DHT.read22(DHT_PIN);
    float temperature = DHT.temperature;

    xSemaphoreGive(semaTemp);

    vTaskDelay(pdMS_TO_TICKS(1000));
  }
}

void TaskDisplayTemperature(void *pvParameters) {
  (void) pvParameters;
  

  for (;;) {
    xSemaphoreTake(semaTemp, portMAX_DELAY);

    DHT.read22(DHT_PIN);
    float temperature = DHT.temperature;
    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.println(" °C");

    vTaskDelay(pdMS_TO_TICKS(4000));
  }
}

void TaskRedLed(void *pvParameters){
  (void) pvParameters;

  for (;;) {
    xSemaphoreTake(semaTemp, portMAX_DELAY);

    DHT.read22(DHT_PIN);
    float temperature = DHT.temperature;

    digitalWrite(RED_LED, temperature > 28 ? HIGH : LOW);
    vTaskDelay(pdMS_TO_TICKS(2000));
  }
}

void TaskGreenLed(void *pvParameters) {
  (void) pvParameters;

  for (;;) {
    xSemaphoreTake(semaTemp, portMAX_DELAY);

    DHT.read22(DHT_PIN);
    float temperature = DHT.temperature;
  
    digitalWrite(GREEN_LED, temperature <= 28 ? HIGH : LOW);
    vTaskDelay(pdMS_TO_TICKS(2000));
  }
}

void setup() {
  Serial.begin(115200);

  pinMode(RED_LED, OUTPUT);
  pinMode(GREEN_LED, OUTPUT);
  pinMode(DHT_PIN, INPUT);

  semaTemp = xSemaphoreCreateBinary();

  xTaskCreate(TaskReadTemperature, "Read_Temp", 128, NULL, 4, NULL);
  xTaskCreate(TaskDisplayTemperature, "Display_Temp", 128, NULL, 1, NULL);
  xTaskCreate(TaskRedLed, "Red_Led", 128, NULL, 2, NULL);
  xTaskCreate(TaskGreenLed, "Green_Led", 128, NULL, 3, NULL);
}



void loop(){
}