import serial
import threading

class stm32_distance():
    data: int = 0
    def __init__(self, serial_port: str) -> None:
        self.serial_port = serial_port
        self.ser = serial.Serial(self.serial_port, 115200)
        self.thread = threading.Thread(target=self.__read_data)
        self.thread.start()

    def __read_data(self):
        while True:
            data = b''
            while True:
                byte = self.ser.read()
                if byte == b'\x03':
                    break
                data += byte
            data_str = data.decode('utf-8')
            try:
                self.data = int(data_str)
            except: 
                pass

    def get_distance(self):
        return self.data