#define INA 10
void setup() {
  Serial.begin(115200);
  pinMode(INA, INPUT_PULLDOWN);
  pinMode(INA, OUTPUT);
}

void loop() {
  digitalWrite(INA, HIGH);
  Serial.println(digitalRead(INA));
  delay(2000);
  digitalWrite(INA, LOW);
  Serial.println(digitalRead(INA));
  delay(2000);
}