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ros-drivers / rosserial

A ROS client library for small, embedded devices, such as Arduino. See: http://wiki.ros.org/rosserial
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error with rosserial_python node #256

Open pedroosorio opened 7 years ago

pedroosorio commented 7 years ago

Hi guys. I keep getting this error

traceback (most recent call last): File "/opt/ros/kinetic/lib/rosserial_python/serial_node.py", line 85, in <module> client.run() File "/opt/ros/kinetic/lib/python2.7/dist-packages/rosserial_python/SerialClient.py", line 503, in run self.requestTopics() File "/opt/ros/kinetic/lib/python2.7/dist-packages/rosserial_python/SerialClient.py", line 389, in requestTopics self.port.flushInput() File "/home/lar/.local/lib/python2.7/site-packages/serial/serialutil.py", line 512, in flushInput self.reset_input_buffer() File "/home/lar/.local/lib/python2.7/site-packages/serial/serialposix.py", line 556, in reset_input_buffer termios.tcflush(self.fd, termios.TCIFLUSH) termios.error: (5, 'Input/output error') [ERROR] [1480067138.962050]: bad callback: <bound method Subscriber.callback of <rosserial_python.SerialClient.Subscriber instance at 0x7fdf8e465710>> Traceback (most recent call last): File "/opt/ros/kinetic/lib/python2.7/dist-packages/rospy/topics.py", line 720, in _invoke_callback cb(msg) File "/opt/ros/kinetic/lib/python2.7/dist-packages/rosserial_python/SerialClient.py", line 137, in callback self.parent.send(self.id, data_buffer.getvalue()) File "/opt/ros/kinetic/lib/python2.7/dist-packages/rosserial_python/SerialClient.py", line 698, in send self.port.write(data) File "/home/lar/.local/lib/python2.7/site-packages/serial/serialposix.py", line 537, in write raise SerialException('write failed: {}'.format(v)) SerialException: write failed: [Errno 5] Input/output error

Using rosserial_python serial_node.py, connected to an Arduino Mega2560, 57600 baud, ROS Kinetic, Ubuntu 16.04 (Server edition). If i start publishing data (which the arduino subscribes), after a while, this error happens.

Thanks

AlexisTM commented 7 years ago

This looks like a USB disconnection, like #195, you should try updating your kernel.