Happy to share the slides from my Devtool hands-on class presentation at Yocto Project Virtual Summit 2025.

Devtool is a very helpful tool for creating and maintaining recipes. I’m very happy I accepted to take over the traditional devtool hands-on class at the Yocto Project Summit in 2024, because devtool provided invaluable in my Yocto work since then.

Thanks to the additional experience, a devtool section was added to Root Commit’s Yocto Project and OpenEmbedded training course, and the hands-on slides got a complete overhaul compared to the 2024 version. The 2025 version is also based on the upcoming Whinlatter version, and is also expected to be compatible with the next Wrynose LTS version.

Introduction

Orange PI 3B is a cheap and attractive Raspberry Pi sized single board computer based on the Rockchip RK3566:

• Rockchip RK3566 (4x ARM Cortex-A55 @ 1.6GHz)

• ARM Mali-G52-2EE GPU (OpenGL ES 1.1/2.0/3.0/3.1/3.2, Vulkan 1.1, OpenCL 2.0)

• LPDDR4 RAM (2/4/8 GB)

• Micro-SD card slot

• SPI flash (16/32 MB)

• Optional eMMC pluggable module (16/32/64/128/256 GB)

• Wi-Fi5 + Bluetooth 5.0, BLE

• 1x USB 2.0 Type A OTG, 2x USB 2.0 Type A HOST, 1x USB 3.0 Type A Host

Training or consulting?

In partnership with Amarula Solutions, I was in discussion with an Italian company, Novavision. Moving to a new hardware platform, they wanted to take the opportunity to gain ownership of the tools that are used to build their products, here Yocto, instead of subcontracting this part of system development as they did previously.

Their first idea was to order our Yocto Project and OpenEmbedded training course. However, facing project deadline pressure, they also wondered whether consulting wouldn’t be a better choice to get their new project started in an efficient way. However, they didn’t want to fall back to subcontracting what they want to learn. That’s how the idea of a hybrid solution came up: consulting and training at the same time!