HX711 Load Cell Sensor Arduino

#define DOUT_PIN PB12
#define PD_SCK_PIN PB13

void setup() {
  pinMode(DOUT_PIN, INPUT);
  pinMode(PD_SCK_PIN, OUTPUT);
  digitalWrite(PD_SCK_PIN, LOW);

  Serial.begin(9600);

  delay(100);
  digitalWrite(PD_SCK_PIN, HIGH);
  delayMicroseconds(100);
  digitalWrite(PD_SCK_PIN, LOW);
  delay(1);
}

long result = 0;
void loop() {
  result = 0;
  while (digitalRead(DOUT_PIN) == HIGH){}
  for (uint8_t i = 0; i < 25; i++){
    delayMicroseconds(1);
    digitalWrite(PD_SCK_PIN, HIGH);
    delayMicroseconds(1);
    digitalWrite(PD_SCK_PIN, LOW);
    result <<= 1;
    result |= digitalRead(DOUT_PIN);
  }
  result >>= 1;

  // to convert to kilograms it will be result * something + something
  Serial.println(result);

  delay(1000);
}