The screenshot above shows the home screen of a sugar beet harvester. The home screen receives roughly 50 CAN messages per second and displays the contents of the CAN messages numerically or graphically.
Read More »My talk “A Deep Dive into QtCanBus” at Qt World Summit 2019When you run a Qt project, QtCreator first deploys the project to a remote embedded Linux device via ssh and then runs the executable on the remote device. This feature enables nearly instant feedback how your Qt application works on the embedded device.
Deployment works fine with the INSTALLS variable of qmake. It does not work out of the box with the install functions of CMake. Fortunately, the Qt trolls provide a workaround. I’ll explain the workaround with an example CMakeLists.txt file.
Read More »Deploying Qt Projects to Embedded Devices with CMakeIn a recent post Using Docker Containers for Yocto Builds, I suffered an episode of NIHS (not-invented-here syndrome). I wrote a Dockerfile for Yocto builds. Stefan Agner pointed out in his comment that the CROPS project provides ready-made containers for Linux distributions like Ubuntu, Fedora and others. The crops/poky-container enables us to start our first Yocto build within minutes.
Read More »Yocto Builds with CROPS ContainersWe want to build a custom Linux image with Yocto for the Raspberry Pi 3 model B (BCM2837). The Linux image contains a very simple Internet radio application using Qt 5.11 and the eglfs graphics backend. Our colleagues shall be able to repeat the build easily – now, in three years and even in ten years.
I’ll explain why Docker is an excellent choice to build custom Linux images and give you a step-by-step guide how to do it. At the end of the post, you will be able to run a simple Internet radio on a custom Linux image on a Raspberry Pi 3.
Read More »Using Docker Containers for Yocto BuildsLinuxGizmos reports that the Linux Foundation has launched a project Automated Compliance Tooling (ACT). ACT is an umbrella project for FOSS compliance tools like Fossology,… Read More »Linux Foundation Launches Automated Compliance Tooling (ACT) Project
The maize harvest is in full swing. The harvester runs nearly 24/7. The driver notices a drop in the area cut per hour. He calls tech support and starts sharing the screen of the terminal in the harvester. The support technician guides guides the driver through changing some machine parameters. All is fine again. My Italian business partner, Ispirata, and I developed a VNC server for the Freescale i.MX53 terminal of Krone’s BiGX forage harvester – to make this scenario possible.
Read More »Remote Support for Harvester Terminal via VNC