#include "DHT.h"
#include <soc/soc.h> 
#define DHTPIN 2     
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);
SemaphoreHandle_t semphrHandle;
void temperatureRead( void *pvParameters );
void humidityRead( void *pvParameters );
void setup() {
  Serial.begin(115200);
  Serial.println(F("DHT22 example!"));

  semphrHandle = xSemaphoreCreateBinary();//创建一个二进制信号量
  xSemaphoreGive(semphrHandle);//释放信号量
  xTaskCreatePinnedToCore(
    temperatureRead
    ,  "temperatureRead"   // A name just for humans
    ,  1024  // This stack size can be checked & adjusted by reading the Stack Highwater
    ,  NULL
    ,  2  // Priority, with 3 (configMAX_PRIORITIES - 1) being the highest, and 0 being the lowest.
    ,  NULL 
    ,  1);
    xTaskCreatePinnedToCore(
    humidity
    ,  "humidityRead"   // A name just for humans
    ,  1024  // This stack size can be checked & adjusted by reading the Stack Highwater
    ,  NULL
    ,  2  // Priority, with 3 (configMAX_PRIORITIES - 1) being the highest, and 0 being the lowest.
    ,  NULL 
    ,  1);
  dht.begin();
}

void loop() {
  /*
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Check if any reads failed and exit early (to try again).
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  Serial.print(F("Humidity: "));
  Serial.print(humidity);
  Serial.print(F("%  Temperature: "));
  Serial.print(temperature);
  Serial.println(F("°C "));

  // Wait a few seconds between measurements.
  delay(2000);
  */
}
void temperatureRead( void *pvParameters ){
  float temperature = dht.readTemperature();
  if (isnan(temperature)) {
    Serial.println(F("Failed to read from DHT sensor!"));
  }else{
    Serial.print(F("Temperature: "));
    Serial.print(temperature);
    Serial.println(F("°C "));
  }
  delay(2000);
}
void humidityRead( void *pvParameters ){
  float humidity = dht.readHumidity();
  if (isnan(humidity)) {
    Serial.println(F("Failed to read from DHT sensor!"));
  }else{
    Serial.print(F("Humidity: "));
    Serial.print(humidity);
    Serial.println(F("%  "));
  }
  delay(3000);
}