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ros does not show any debug messages

asked 2018-05-15 20:55:21 -0500

frodyteen gravatar image

updated 2018-05-15 21:06:39 -0500

So, I am trying to debug a package, and was thinking of using ROS_DEBUG() AND ROS_DEBUG_STREAM() to print out all my variables on either rqt_console or the /rosout topic following this site.

So I added the following lines in the cpp file:

  ROS_DEBUG("HELLO %s", "world");
  ROS_DEBUG_STREAM("hello " << "world");
  SERIAL_EXCEPT(SerialException, "buffer filled without end of line being found");

Also, I tried to put the debugging messages at the beginning of the main loop, shown below:

int main(int argc, char **argv)
  ros::init(argc, argv, "dsp3000");
  ROS_DEBUG("Hello %s", "world");
  ROS_DEBUG_STREAM("Hello " << "world");

  string port_name;
  ros::param::param<std::string>("~port", port_name, "/dev/ttyUSB0");
  int32_t mode;
  ros::param::param<int32_t>("~mode", mode, KVH_DSP3000_RATE);

Here is a picture of rqt_console: image description After catkin_make and running the node, i don't see ros.<your_package_name> anywhere, also rqt_console shows zero message in the debug option, however, ROS_ERROR & ROS_INFO messages gets printed out. I know that my code reaches there because the the serial_exception message gets prints out.

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1 Answer

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answered 2018-05-15 23:35:22 -0500

AdamSorrel gravatar image

updated 2018-05-16 00:02:20 -0500

You could try to set a logging level for your package to debug by adding the following configuration file (don't forget to change the package name):

# Override my package to output everything

You can load this set of parameters from a launch file simply adding:

<env name="ROSCONSOLE_CONFIG_FILE" value="$(find YOUR_PACKAGE_NAME)/custom_rosconsole.conf"/>

This should work for C++. There is a different method for python nodes it seems.

This answer has been pretty much taken from here.

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okay, so I created a .conf in my package folder, now I am able to see debug in my terminal, do you know how o print to rqt_console as well? thank you.

frodyteen gravatar image frodyteen  ( 2018-05-16 18:17:02 -0500 )edit

Did you try to check settings (the gray cogwheel in the top left corner). In there you can set logging level for each node separately.

AdamSorrel gravatar image AdamSorrel  ( 2018-05-18 03:36:41 -0500 )edit

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Asked: 2018-05-15 20:55:21 -0500

Seen: 4,206 times

Last updated: May 16 '18