Temperature Sensor readout for Constellation Tutorial

read_temperature.py

from threading import Lock

import serial

class TempSensor():
    def __init__(self, port: str = '/dev/ttyACM0'):
        self._lock = Lock()
        self._serial = serial.Serial(
            port=port,
            baudrate=9600,
            bytesize=serial.EIGHTBITS,
            parity=serial.PARITY_NONE,
            stopbits=serial.STOPBITS_ONE,
            timeout=1.5,
        )

    def read_temperature(self) -> None | float:
        with self._lock:
            self._serial.reset_input_buffer()
            try:
                line = self._serial.readline().decode()
                return float(line[13:18])
            except:
                pass
        return None

    def close(self) -> None:
        self._serial.close()