#define RX_PIN 44
#define TX_PIN 43
#define NUM_SENSORS 9
#define BAUD 115200

int sensorPins[] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
char sensorValues[NUM_SENSORS];

void setup() {
  Serial1.begin(BAUD, SERIAL_8N1, RX_PIN, TX_PIN);
  for (int i = 0; i < NUM_SENSORS; i++) {
    pinMode(sensorPins[i], INPUT);
  }
}

void loop() {
  // Read values from Hall effect sensors
  for (int i = 0; i < NUM_SENSORS; i++) {
    int sensorValue = analogRead(sensorPins[i]);
    // Threshold based on reading
    // North
    if (sensorValue < 100) {
      sensorValues[i] = '2';
    }
    // South
    else if (sensorValue > 4000) {
      sensorValues[i] = '1';
    }
    // None
    else {
      sensorValues[i] = '0';
    }
  }

  // Send sensor data to the receiver (using Serial1)
  for (int i = 0; i < NUM_SENSORS; i++) {
    Serial1.print(sensorValues[i]);
    if (i < NUM_SENSORS - 1) {
      Serial1.print(",");
    }
  }
  Serial1.println();

  delay(1000);
}