#define PIN_DHT 8

void setup() {
  Serial.begin(9600);
}

void loop() {
  Serial.println("Start DHT reading…");
  sendStartSignal();

  Serial.println("Reading data…");
  waitForResponsePulse();
  printRawData();
  Serial.println("End of data!");

  delay(5000);
}

void sendStartSignal() {
  pinMode(PIN_DHT, OUTPUT);
  digitalWrite(PIN_DHT, LOW);
  delay(20);
  digitalWrite(PIN_DHT, HIGH);
}

void waitForResponsePulse() {
  pinMode(PIN_DHT, INPUT);
  while (digitalRead(PIN_DHT) != LOW) {}
  while (digitalRead(PIN_DHT) != HIGH) {}
  while (digitalRead(PIN_DHT) != LOW) {}
}

void printRawData() {
  const uint8_t NB_BYTES = 8;
  uint8_t results[NB_BYTES][8];

  for (uint8_t i = 0; i < NB_BYTES; i++) {
    readRawByte(results[i]);
  }

  for (uint8_t i = 0; i < NB_BYTES; i++) {
    for (uint8_t j = 0; j < 8; j++) {
      Serial.print(results[i][j]);
    }
    Serial.println("");
  }
}

void readRawByte(uint8_t* results) {
  for (uint8_t i = 0; i < 8; i++) {
    while (digitalRead(PIN_DHT) != HIGH) {}
    
    delayMicroseconds(50);

    if (digitalRead(PIN_DHT) == HIGH) {
      results[i] = 1;
    } else {
      results[i] = 0;
    }

    // while (digitalRead(PIN_DHT) != LOW) {}
  }
}