Will zflat

Debug ROS2 C++ node on VSCode (Ubuntu)

Description

This is a small tutorial on how to debug a ROS2 C++ node usign VSCode.

Requeriments

This implementation was done using:

Gstreamer Pipeline Samples

Table of Contents:

Gstreamer Pipeline Samples
- Tips for Debug
- Video
  - display test video
  - record to file
record and display at the same time(queue)

;; Automatically generated
(custom-set-variables
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(anzu-cons-mode-line-p nil)

Unix signals in Qt applications

It's quite easy to catch unix signals in Qt applications. you may like to ignore or accept them.

#include <QCoreApplication>

#include <signal.h>
#include <unistd.h>

Seeing this error in the bash shell when launching some apps, such as scite:

** (scite:5298): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files

Update as per comments below.

It appears adding this library fixes the problem: at-spi2-core

	#!/usr/bin/env bash

	set -Eeuo pipefail
	trap cleanup SIGINT SIGTERM ERR EXIT

	script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)

	usage() {
	cat <<EOF
	Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]

	#!/usr/bin/env python3

	import rospy
	import urllib.request
	import urllib.error
	import socket
	import os

	# This is not a param to avoid param injection
	# or unexpected programm killed because of a simple rosparam set with a wrong value

	import logging
	import paramiko

	class SSH:
	def __init__(self):
	pass

	def get_ssh_connection(self, ssh_machine, ssh_username, ssh_password):
	"""Establishes a ssh connection to execute command.
	:param ssh_machine: IP of the machine to which SSH connection to be established.

	cmake_minimum_required(VERSION 3.8)
	project(tsProject)

	# Managing translations require LinguistTools module
	# The cmake function is defined in the Qt installation tree:
	# i.e. Qt5.9.1/5.9.1/gcc_64/lib/cmake/Qt5LinguistTools/Qt5LinguistToolsMacros.cmake
	# Reference: https://doc.qt.io/qt-5/cmake-manual.html#qt5linguisttools-macros
	find_package(Qt5 COMPONENTS Widgets LinguistTools)
	set (CMAKE_CXX_STANDARD 11)
	set(CMAKE_INCLUDE_CURRENT_DIR ON)

	(require 'dash)
	(require 's)
	(require 'loop)
	(require 'icons-in-terminal)

	(defun my-char-at-point (&optional p)
	"P."
	(let ((point (or p (point))))
	(if (< point (point-max)) (buffer-substring-no-properties point (1+ point))
	"")))