validator.py

import serial
import time
import random

PORT = 'COM3'  # Make sure this matches your Arduino!
BAUD_RATE = 115200

def run_validation():
    print(f"--- STARTING NXP VALIDATION PROTOCOL ---")
    
    try:
        arduino = serial.Serial(PORT, BAUD_RATE, timeout=2)
        print("Waiting for device boot...")
        time.sleep(2)

        passed = 0
        failed = 0

        for i in range(1, 51):
            test_input = random.randint(0, 100)
            expected = (test_input * 2) + 5

            arduino.write(f"{test_input}\n".encode())
            
            # We need to catch errors if reading fails
            response = arduino.readline().decode().strip()

            if response == str(expected):
                print(f"Test #{i}: Input {test_input} -> Output {response} [PASS]")
                passed += 1
            else:
                print(f"Test #{i}: Input {test_input} -> Output {response} [FAIL]")
                failed += 1
            
            time.sleep(0.05)

        # --- KEY FIX IS HERE ---
        # Notice these lines still have space (Tab) on the left.
        # They are still inside the "try" safety net.
        print("-" * 30)
        print(f"RESULTS: {passed} PASSED, {failed} FAILED")

        if failed == 0:
            print("STATUS: SYSTEM VALIDATED")
        else:
            print("STATUS: BUGS FOUND...")

        arduino.close()

    # Now the 'except' lines up perfectly with the 'try'
    except Exception as e:
        print(f"CRITICAL ERROR: {e}")

if __name__ == "__main__":
    run_validation()