Cross debugging, and more generally, remote debugging, is something that may be unknown, or badly used, by either beginner engineers, or sometimes even by senior engineers, for several reasons. Some people simply do not know that remote debugging tools exists, some might consider the complex setup as a show-stopper, some other ones may not trust the tools (and we can explain why).

Yet the return of investment of such tools is significant, provided that they are used appropriately.

This presentation talks about the first-fruits of cross-debugging, going through some real experiences, some architecture schemes and functionnal descriptions, comparing the existing solutions (eg, gdb-server vs lldb vs tcf ...), and their integration in IDEs (Eclipse, VsCode).

A technical chapter about the debugger mysteries, explains, in particular, why multithread, or SMP debugging is a complex issue, and how existing debuggers deal with it.

A chapter of performance analysis tools (eg, valgrind) is presented, too, in order to offer a kind of swiss army knife to the listeners.

As a conclusion, a short presentation of the debug tools on another OpenSource OS (Zephyr) is done.

This talk was presented at OSS



Lorient, France – September 13rd 2021 –, an open source software company for embedded & secured solutions, today announced the release of its first redpesk® OS version called « Arz 1.0 ».
A ready-to-start full feature community edition is available online with its documentation.

« Thanks to redpesk®, customers can now focus on their differentiating applications relying on an easy-to-use CI/CD Long Term Supported platform (+10 years) with best of modern IT features adapted to embedded’s constraints » said Fulup Le Foll, CEO.

redpesk® Arz 1.0 includes the following key features :

  • A new application framework AFB-V4 engine compatible with AGL-V3 up to 10 times faster
  • A new security model that can understand Smack but also an early access version for SELinux
  • +2 500 pre-built ready-to-use binary packages

But also many others as:

  • Cross-compilation for X86 & ARM architectures
  • SDK enabling fast native iteration cycles for developers
  • Automatic testing facility for both real & virtual environments
  • Extended QA through scanning tools
  • Release management solution
  • Reporting interface
  • Reference implementation for Over-the-Air updates
  • Core optional platform services (health monitoring, identity management etc)

All these features are supported on multiple SoC architectures and reference boards: Renesas H3/M3 ULCB, Raspberry PI 4, UP board & virtual machine QEMU-x86_64


About redpesk®

redpesk® is a secure embedded Linux dedicated to Industrial IoT and redpesk® OS ( provides:

  • A free developer edition aligned with CentOS Stream®
  • A subscription based LTS version aligned on a fork of RHEL®


About is an expert software company with strong recognition inside the global open source community for its Linux and cybersecurity solutions dedicated to embedded markets (automotive, maritime, military, aeronautics, energy etc).



An introduction to the fundamentals of SMACK and SELinux administration.

This conference was presented for the association HACK2G2.

Slides : [click here]



The modern, connected, embedded Linux IoT device is facing a fundamental problem: the more connected it gets, the more cybersecurity threats it faces. Data link reliability, especially in the marine case, also makes it hard to efficiently push sensor data to the cloud.

This talk shows how to implement a reliable sensor data path from a marine IoT device running the redpesk embedded distribution to the cloud. It starts with lessons learned from real-world use cases: sending data from thousands of sensors to a cloud backend served by a choppy connection. It then dives into the microservice framework, its security model (based on SMACK and SELinux) and how we coupled it with RedisTimeSeries.

Those, in addition to an OpenID Connect service, allows to securely and selectively funnel data from that target to the cloud. The talk concludes with a proposal on how this open infrastructure can be used by the community at large.

This talk was presented at Live Embedded Event 2021

Slides: [click here]

Video: [click here]


Modern SoCs contain heterogeneous processor devices that can be used to execute specific tasks. While Linux often runs on Cortex Ax processors, it is possible to run Zephyr on smaller cores like Cortex M or R. That way it's possible to isolate critical functions from a Linux rich environment. Applications can be found for safety use cases, power management purposes (wake up word, wake on sensor), or isolating realtime tasks. This talk is about solutions we found at to make both world cooperate: How to communicate thanks to the RPMSG framework and how to start this remote processor from Linux using the remoteproc subsystem.

This talk has been given for Live Embedded event 2021.

Slides: [click here]

Video: [click here]


Archived Publications