// Wokwi's supported-parts catalogue does not currently contain a VL53L0X.
// This potentiometer is an explicit range-input surrogate for the firmware
// decision path. Replace readTofMm() with the vendor driver on real hardware.
const int TOF_SURROGATE_PIN = 34;
const int TRIG_PIN = 18;
const int ECHO_PIN = 19;

float ultrasonicCm() {
  digitalWrite(TRIG_PIN, LOW); delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH); delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  unsigned long pulse = pulseIn(ECHO_PIN, HIGH, 30000);
  return pulse ? pulse / 58.0 : -1.0;
}

int readTofMm() {
  int raw = analogRead(TOF_SURROGATE_PIN);
  return map(raw, 0, 4095, 50, 2000);
}

void setup() {
  Serial.begin(115200);
  pinMode(TOF_SURROGATE_PIN, INPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  Serial.println("RANGING READY: VL53L0X range-input surrogate; not a stopping-safety test");
}

void loop() {
  int tofMm = readTofMm();
  float soundCm = ultrasonicCm();
  Serial.printf("ToF surrogate=%d mm status=SIM | HC-SR04=%.1f cm (different beam and physics)\n",
                tofMm, soundCm);
  delay(800);
}