树莓派+ros_arduino_bridge 运行报错 “[Errno 13] Permission denied“

使用ros_arduino_bridge功能包进行串口通信时，运行launch文件

roslaunch ros_arduino_python arduino.launch

报错如下：

rosdep2.core.CachePermissionError:Fail to write cache file: [Errno 13] Permission denied: 'home/pi/.ros/rosdep/sources.cache/index'

解决方法：

sudo rosdep fix-permissions