// https://wokwi.com/projects/377058695553489921
// https://forum.arduino.cc/t/a-maybe-special-kind-of-setup/1172751

const byte signalAPin = 7;
const byte signalBPin = 6;

# define PRESST LOW

void setup() {
  Serial.begin(115200);
  Serial.println("Hello World!\n");

  pinMode(signalAPin, INPUT_PULLUP);
  pinMode(signalBPin, INPUT_PULLUP);
}

void loop() {
  bool signalA = digitalRead(signalAPin) == PRESST;
  bool signalB = digitalRead(signalBPin) == PRESST;

  if (signalA) {
    Serial.println("I see signal A asserted");
  }
  
  if (signalB) {
    Serial.println("I see                     signal B asserted");
  }
  
  delay(100);   // spam mitigation act
}