#include <dht.h>

dht DHT;

#define DHT22_PIN 5

struct{
  uint32_t total;
  uint32_t ok;
  uint32_t crc_error;
  uint32_t time_out;
  uint32_t connect;
  uint32_t ack_l;
  uint32_t sck_h;
  uint32_t unknown;
} stat={0,0,0,0,0,0,0,0};

void setup() {
  // put your setup code here, to run once:
 Serial.begin(115200);
 Serial.println("dht22_test.ino");
 Serial.print("LIBRARY VESRSION:");
 Serial.println(DHT_LIB_VERSION);
 Serial.println();
 Serial.println("Type,\tstatus,\tHumidity(%),\tTemerature(C)\tTime(us)");
}

void loop() {
  // put your main code here, to run repeatedly:
 Serial.print("DHT22,\t");

 uint32_t start=micros();
 int chk=DHT.read22(DHT22_PIN);
 uint32_t stop=micros();
 stat.total++;
 switch(chk)
 {
  case DHTLIB_OK:
  stat.ok++;
  Serial.print("OK,\t");
  break;
  case DHTLIB_ERROR_CHECKSUM:
  stat.crc_error++;
  Serial.print("Checksum error,\t");
  break;
  case DHTLIB_ERROR_TIMEOUT:
  stat.time_out++;
  Serial.print("Time out error,\t");
  break;
  case DHTLIB_ERROR_CONNECT:
  stat.connect++;
  Serial.print("Connect error,\t");
  break;
  case DHTLIB_ERROR_ACK_L:
  stat.ack_l++;
  Serial.print("Ack Low error,\t");
  break;
  case DHTLIB_ERROR_ACK_H:
  stat.sck_h++;
  Serial.print("Ack High error,\t");
  break;
 }

 Serial.print(DHT.humidity,1);
 Serial.print(",\t");
 Serial.print(DHT.temperature,1);
 Serial.print(",\t");
 Serial.print(stop-start);
 Serial.println();

 if(stat.total%20==0)
 {
  Serial.println("\nTOT\tOK\tCRC\tTO\tCON\tACK_L\tACK_H\tUNK");
  Serial.print(stat.total);
  Serial.print("\t");
  Serial.print(stat.ok);
  Serial.print("\t");
  Serial.print(stat.crc_error);
  Serial.print("\t");
  Serial.print(stat.time_out);
  Serial.print("\t");
  Serial.print(stat.connect);
  Serial.print("\t");
  Serial.print(stat.ack_l);
  Serial.print("\t");
  Serial.print(stat.sck_h);
  Serial.print("\t");
  Serial.print(stat.unknown);
  Serial.print("\n");
 }
 delay(2000);
}