JRC JJ1000+无人机套件>>错误：dronekit.mavlink：MAVLink输入循环中出现异常

Question

我正在尝试使用dronekit+python连接JRC JJ1000无人机。 执行connect命令时：

dronekit.connect('com3', baud=115200, heartbeat_timeout=30)

我得到以下错误：

ERROR:dronekit.mavlink:Exception in MAVLink input loop
Traceback (most recent call last):
  File "C:\Python37\lib\site-packages\dronekit\mavlink.py", line 211, in mavlink_thread_in
    fn(self)
  File "C:\Python37\lib\site-packages\dronekit\__init__.py", line 1371, in listener
    self._heartbeat_error)
dronekit.APIException: No heartbeat in 5 seconds, aborting.
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python37\lib\site-packages\dronekit\__init__.py", line 3166, in connect
    vehicle.initialize(rate=rate, heartbeat_timeout=heartbeat_timeout)
  File "C:\Python37\lib\site-packages\dronekit\__init__.py", line 2275, in initialize
    raise APIException('Timeout in initializing connection.')
dronekit.APIException: Timeout in initializing connection.

我没有一家商店没开张，但没有任何进展。我还尝试了Python2.7和3.7，得到了相同的结果。你知道吗