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hbrobotics / ros_arduino_bridge

ROS + Arduino = Robot
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ros_arduino_python node died #39

Closed foreverlms closed 1 year ago

foreverlms commented 7 years ago

Version: Indigo on RaspberryPi

I use ros_arduino_python to controll arduino on rpi.Lastday it worked fine.But today when I roslaunch the launch file,some erros happen.

Connecting to Arduino on port /dev/ttyUSB0 ...
Traceback (most recent call last):
  File "/opt/ros/indigo/share/ros_arduino_python/nodes/arduino_node.py", line 195, in <module>
    myArduino = ArduinoROS()
  File "/opt/ros/indigo/share/ros_arduino_python/nodes/arduino_node.py", line 87, in __init__
    self.controller.connect()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/ros_arduino_python/arduino_driver.py", line 68, in connect
    test = self.get_baud()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/ros_arduino_python/arduino_driver.py", line 261, in get_baud
    return int(self.execute('b'));
  File "/opt/ros/indigo/lib/python2.7/dist-packages/ros_arduino_python/arduino_driver.py", line 178, in execute
    return int(value)
TypeError: int() argument must be a string or a number, not 'NoneType'

I check the arduino_driver.py and I didn't find the reason.Rebooting node doesn't work. Here are the log files: e86d038a-4755-11e7-8caf-b827eb1042b5.zip

foreverlms commented 7 years ago

And sometimes the error may become another one :

Connecting to Arduino on port /dev/ttyUSB0 ...
Traceback (most recent call last):
  File "/opt/ros/indigo/share/ros_arduino_python/nodes/arduino_node.py", line 195, in <module>
    myArduino = ArduinoROS()
  File "/opt/ros/indigo/share/ros_arduino_python/nodes/arduino_node.py", line 87, in __init__
    self.controller.connect()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/ros_arduino_python/arduino_driver.py", line 68, in connect
    test = self.get_baud()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/ros_arduino_python/arduino_driver.py", line 261, in get_baud
    return int(self.execute('b'));
  File "/opt/ros/indigo/lib/python2.7/dist-packages/ros_arduino_python/arduino_driver.py", line 178, in execute
    return int(value)
ValueError: invalid literal for int() with base 10: ''
foreverlms commented 7 years ago

@pirobot

pirobot commented 7 years ago

Hi @coderchaser,

Can you please try the master branch and see if the problem goes away?