Topic Not Visible error

Abierto

#209 abierto el 18/10/2023 7 comentarios 0 reacciones 0 asignados Ver en GitHub

Nadie ha tomado este issue todavía.

Lenguaje dominante: C++
Estrellas: 201
Forks: 111
Merge medio: 1 d 6 h
PR fusionados (30 d): 10

Descripción

## Issue template

- Hardware description: ESP32-WROVER-E
- RTOS: ROS2 Humble
- Installation type: micro_ros_setup
- Version or commit hash: Ubuntu 22.04.3 LTS, Arduino 1.8.19
#### Steps to reproduce the issue
# Source the ROS 2 installation
source /opt/ros/$ROS_DISTRO/setup.bash

# Create a workspace and download the micro-ROS tools
mkdir microros_ws
cd microros_ws
git clone -b $ROS_DISTRO https://github.com/micro-ROS/micro_ros_setup.git src/micro_ros_setup

# Update dependencies using rosdep
sudo apt update && rosdep update
rosdep install --from-paths src --ignore-src -y

# Install pip
sudo apt-get install python3-pip

# Build micro-ROS tools and source them
colcon build
source install/local_setup.bash

# Create step
ros2 run micro_ros_setup create_firmware_ws.sh freertos esp32

# Configure step with ping_pong app and serial transport
ros2 run micro_ros_setup configure_firmware.sh ping_pong --transport serial

I followed all these steps no issues till now

# Build step
ros2 run micro_ros_setup build_firmware.sh

when i executed command in between it shows as "colcon build stderr output"
later it will complete the execution without any error 100% build target app.

# Flash step
ros2 run micro_ros_setup flash_firmware.sh

# Download micro-ROS-Agent packages
ros2 run micro_ros_setup create_agent_ws.sh

# Build step
ros2 run micro_ros_setup build_agent.sh

while executing this line it gives

$ ros2 run micro_ros_setup build_agent.sh
source install/local_setup.bash
Building micro-ROS Agent
Starting >>> micro_ros_msgs
Finished <<< micro_ros_msgs [6.49s]
Starting >>> micro_ros_agent
[Processing: micro_ros_agent]
--- stderr: micro_ros_agent
Cloning into 'xrceagent'...
Switched to a new branch 'ros2'
HEAD is now at 2cbbc4a Fix deserialization endianness (#336)
CMake Warning (dev) at /usr/share/cmake-3.22/Modules/FindPackageHandleStandardArgs.cmake:438 (message):
The package name passed to `find_package_handle_standard_args` (tinyxml2)
does not match the name of the calling package (TinyXML2). This can lead
to problems in calling code that expects `find_package` result variables
(e.g., `_FOUND`) to follow a certain pattern.
Call Stack (most recent call first):
cmake/modules/FindTinyXML2.cmake:40 (find_package_handle_standard_args)
/opt/ros/humble/share/fastrtps/cmake/fastrtps-config.cmake:51 (find_package)
CMakeLists.txt:153 (find_package)
This warning is for project developers. Use -Wno-dev to suppress it.

---
Finished <<< micro_ros_agent [53.1s]

Summary: 2 packages finished [1min 1s]
1 package had stderr output: micro_ros_agent

source install/local_setup.bash
# Run a micro-ROS agent
$ ros2 run micro_ros_agent micro_ros_agent serial --dev /dev/serial/by-id/usb-Silicon_Labs_CP2102N_USB_to_UART_Bridge_Controller_8484ebb7cd24ec11ad45dd31b659684c-if00-port0
executes correctly

In another terminal if i run
source /opt/ros/$ROS_DISTRO/setup.bash

# Subscribe to micro-ROS ping topic
ros2 topic echo /microROS/ping

ros2 topic echo /microROS/ping
WARNING: topic [/microROS/ping] does not appear to be published yet
Could not determine the type for the passed topic

I have gone through Domail ID and set it to even 0 then also i am getting the same result.
I even refered this and other links regarding the same https://github.com/micro-ROS/micro_ros_arduino/issues/21

This line also gets exicuited correctly code gets uploaded to the board.

#### Expected behavior
You should see the topic messages published by the Ping Pong node every 5 seconds:

user@user:~$ ros2 topic echo /microROS/ping
stamp:
sec: 20
nanosec: 867000000
frame_id: '1344887256_1085377743'
---
stamp:
sec: 25
nanosec: 942000000
frame_id: '730417256_1085377743'
ros2 run micro_ros_setup create_firmware_ws.sh freertos esp32
#### Actual behavior
WARNING: topic [/microROS/ping] does not appear to be published yet
Could not determine the type for the passed topic
#### Additional information

Guía de contribución

Abrir la guía de contribución

Primeros pasos

Lee el issue completo y luego la guía de contribución del proyecto.
Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
Haz un fork del repositorio y trabaja en una rama.
Abre un pull request que haga referencia al número del issue.

Línea de trabajo

Comienza reproduciendo los comandos documentados de micro_ros_setup create, build, flash y agent para el ESP32 con transporte serie. Compara la salida de micro-ROS Agent con `ros2 topic echo /microROS/ping` y con los mensajes esperados indicados; se considera terminado cuando el tópico de ping es detectable y publica los mensajes esperados.

Escrito por el modelo de indexación a partir del texto del issue.

Evaluación

Stack tecnológico: arduino, cpp, ubuntu
Área: distributed-systems, embedded-iot, robotics
Tipo de issue: Error
Dificultad: 4/5
Tiempo estimado: 3-5 días
Estado de actividad: Estancado
Claridad: Bastante claro
Aptitud para principiantes: 35/100