int PB_PIN=5;
int PB_CONDITION = 0;

void setup() {
  // put your setup code here, to run once:
pinMode(PB_PIN,INPUT_PULLUP);
Serial.begin(115200);

}

void loop() {
  // put your main code here, to run repeatedly:
PB_CONDITION=digitalRead(PB_PIN);
Serial.println(PB_CONDITION);
delay(100);

}