import psutil

def get_cpu_usage():
    return round(psutil.cpu_percent(interval=1))
def get_memory_usage():
    memory = psutil.virtual_memory()
    return round(memory.percent)

def send_serial_data(data, ser):
    if ser.is_open:
        ser.write(data.encode('utf-8'))
        print(f"Sent data: {data}")
    else:
        print("Serial port is not open.")
        ser.open()
        ser.write(data.encode('utf-8'))
        print(f"Sent data: {data}")
        ser.close()