#include "DHT.h"

#define DHTPIN 2     
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);

typedef union
{
  float temperature;
  uint8_t tBytes[4];
} FLOATUNION_t;

union { 
uint8_t t[4]; 
float computedTemp; 
} tData;

typedef union
{
  float humidity;
  uint8_t hBytes[4];
} FLOATUNION_h;

union { 
uint8_t t[4]; 
float computedHum; 
} hData;


void setup() {
  Serial.begin(115200);
  Serial.println(F("DHT22 example!"));
  dht.begin();
 
  
 }

void loop() {
  
  float sensor_temp = dht.readTemperature();
  float sensor_hum = dht.readHumidity();
  FLOATUNION_t tFloat; 
  tFloat.temperature = sensor_temp; // Assign a temperature to the float

  FLOATUNION_h hFloat; 
  hFloat.humidity = sensor_hum; // Assign a humidity to the float

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

  Serial.print(F("Humidity: "));
  Serial.print(sensor_hum);
  Serial.print(F("%  Temperature: "));
  Serial.print(sensor_temp);
  Serial.println(F("°C "));

  Serial.println("Temperature bytes ");
  for (int i=0; i<4; i++)
{
  Serial.print(tFloat.tBytes[i], HEX); // Print the hex representation of the float
  Serial.println(' ');
}
 
  // recombine bytes to float
 
for (int i=0; i<4; i++)
{
  tData.t[i] = tFloat.tBytes[i]; 
}

Serial.print(F("Computed temperature: "));
Serial.print(tData.computedTemp); 
 Serial.println(F("°C "));

  // Wait a few seconds between measurements.
  delay(5000);


 // humidity *********
  Serial.println("Humidity bytes ");
  for (int i=0; i<4; i++)
{
  Serial.print(hFloat.hBytes[i], HEX); // Print the hex representation of the float
  Serial.println(' ');
}
  

  // recombine bytes to float
 
for (int i=0; i<4; i++)
{
  hData.t[i] = hFloat.hBytes[i]; 
}

Serial.print(F("Computed humidity: "));
Serial.print(hData.computedHum); 
 Serial.println(F("% "));
 // Wait a few seconds between measurements.
  delay(5000);

}