The #QEMU on the Linux host emulation of CAN/CAN FD bus for #nuttx presented in the article Host-Based Development with Apache NuttX – CAN Network Simulation by Mateusz Szafoni is using lot of the components from our #canbus list https://canbus.pages.fel.cvut.cz/. I have even prepared CTU CAN FD QEMU emulation variant for SoCs without PCI/PCIe bus on the branch net-can-ctucanfd-platform and my student, Matyáš Bobek has just finished his thesis adding iMX6 FlexCAN emulation into QEMU, code is available on the flexcan branch of his QEMU repository.

Potřebujeme svobodný software, abychom zůstali nezávislí, říká RMS https://www.root.cz/clanky/potrebujeme-svobodny-software-abychom-zustali-nezavisli-rika-rms/?utm_source=rss&utm_medium=text&utm_campaign=rss

Open-Source Chips for Europe
https://open-source-chips.eu/

"We already see rising interest from many EU stakeholders, with increasing investments into open-source chip design, especially in open source IP development (e.g. RISC-V cores), and open source EDA tools.

One additional critical barrier remains toward the end-goal of building real open-source chips, especially for prototyping and education: namely, streamlining the access to open source chip production facilities (foundries) is essential."

The B35APO Computer Architectures course based on #riscv and our #qtrvsim simulator reached new (re)usability level, updated slides in the LaTeX Beamer format for lecture 1 to 10 are translated to English, PDF, CC-BY-SA Slide Sources at #cvut FEE GitLab and on GitHub. The feedback, corrections, suggestion, reuse and cooperation are welcomed. The lectures recording are available on community driven PeerTube server https://vhsky.cz/w/p/8Ejstt3Tfh8mWGcjQcEL2S and CTU FEE B35APO YouTube List. The online site with links to more related courses and on-line QtRvSim WASM application https://comparch.edu.cvut.cz/ allows even online evaluation of simple #riscv assembly and C exercises.

If Europe is going to break from US-based tech will it embrace FOSS or just duplicate the US for-profit, capitalism-based model of computing?

https://kolektiva.media/w/cbb9f78a-9705-41f6-b7a3-e869e1a0e7f2

#Linux #FOSS

#Mapycz (now #Mapycom) from #Seznam use #OpenStreetMap everywhere except their home country - Czech Republic, where they have their own proprietary maps.
There have been rumours in the #OSM community that they actually copy from OSM. Today I found proof that they really do.
I mapped a new park in #Brno just by surveying and taking notes last year. Later the park showed up on Mapy.com with exactly the same path layout. The new orthophoto is out and it revealed that I didn't get everything right and Seznam got it wrong too. Exactly the same mistakes.

Not cool, Seznam.

Congratulations to Gints Zilbalodis and the entire Flow film crew for the Academy Award win!

Flow is the manifestation of Blender’s mission, where a small independent team is able to create a story that moves audiences worldwide.

Thank you for the shout out! 🧡 #b3d

Our RTEMS CAN API with CAN FD and priority class queues (result of Michal Lenc’s thesis) has been accepted into RTEMS.org mainline. The related article Scheduling of CAN Frame Transmission when Multiple FIFOs with Assigned Priorities Are Used in RTOS Drivers was presented at International CAN Conference 2024. The maximal gateway latency under load with CTU CAN FD IP core on Zynq (MZ_APO) is under 65 µsec. Development of two more controller drivers is under development and we hope to find some GSoC participants to support even more hardware as well. #canbus #realtime

@jakub recording of the Ukrainian national anthem today on Old Town Square in #Prague related to the third anniversary of the Russian war of conquest #UnitedForUkraine

“It is impossible to compromise international law and reward the aggressor.” from the speech of Petr Pavel, the president of the Czech Republic source iRozhlas.cz

RE: https://social.jirutka.cz/@jakub/114055067500446728

Wikipedia is rolling out anonymity features piloted in countries with authoritarian governments in the US & is making a change to not show editor IP addresses in response to a global "increase in threats" from Elon Musk, Heritage Foundation, and governments

https://www.404media.co/wikipedia-prepares-for-increase-in-threats-to-us-editors-from-musk-and-his-allies/

I will talk about #realtime Linux kernel support, applications and history at #FOSDEM 2025 based on our experience at #CVUTFEL and my company for robotics, automotive communication ( #CANbus ), etc. The talk is based on my last year Czech language talk for the local community (Slides in English) reporting about PREEMPT_RT mainlining. Discussion and suggestions for slide fixes/extensions are welcomed as my talk has been accepted as no other better has been offered by more knowledgeable developers.

As it turns out, Volkswagen has been collecting extensive geo data from all their electric cars and made them available online in an AWS bucket. Almost 10TB of geo traces from 15 MiO cars. Amazing detail and patterns. This is why I don't want a smart car 🤯 https://events.ccc.de/congress/2024/hub/en/event/wir-wissen-wo-dein-auto-steht-volksdaten-von-volkswagen/ #Volksdaten

Hi #Fediverse, let's start our journey here with our #introduction. We are #Turris project by #CZNIC. We develop and produce #opensource #wifi #router with focus on #security running #Linux distribution based on #OpenWrt. Of course, we provide automatic #updates and #root accounts. We have a #network of #honeypots running on our devices and create a dynamic #firewall based on the data.

The b̵i̵r̵d̵ elephant is free. Aneb jak nám došla trpělivost s X. https://blog.cesko.digital/2024/11/odchazime_z_x

Linux 6.12 Released With Real-Time Capabilities, Sched_Ext, More AMD RDNA4 & More

As expected, minutes ago Linus Torvalds just released the Linux 6.12 kernel as stable. Linux 6.12 brings many new features, new hardware support, and is rounded out by the fact of expected to become this year's Long Term Support (LTS) kernel version...
https://www.phoronix.com/news/Linux-6.12-Released

Greetings from the RISC-V Summit North America 2024 https://riscv.org/event/risc-v-summit-north-america-2024/ . Many interesting topics have been presented there. My main interest is to connect with other computer architecture teachers to discuss materials and experience sharing in the frame of #RISCV SIG Academia and Training. In the picture is David Patterson after my introduction of #QtRvSim to him.

Part of CTU FEE OTREES HW ZOO at #LinuxDays booth. On the left , #RiscV #milkvpioneer with #fedora desktop running #CHROMuLAN, #qtrvsim with new branch predictors visualization and Elektroline.cz Silicon-Heaven SHVspy https://github.com/silicon-heaven/libshv. On the right, x86 Debian running Silicon-Heaven broker and #pysimCoder https://github.com/robertobucher/pysimCoder to generate and runtime tune PMSM control application running on #NuttX on open-source motion control platform SaMoCon https://gitlab.fel.cvut.cz/otrees/motion/samocon which is a result of Stepan Pressl's thesis https://wiki.control.fel.cvut.cz/mediawiki/images/4/44/Bp_2024_pressl_stepan.pdf . On the left in front, MZ_APO Xilinx Zynq based educational kit running Debian from NFS RO root. Its FPGA is configured by 2x CTU CAN FD, PMSM motor control peripherals and RVapo #riscv soft core co-processor used for inverse and forward Park and Clarke transformations for PWM, current sensing and calibration all running at 20 kHz in sync with PWM cycles. The soft core was started by Eduard Lavus as PAP course project and has been extended and integrated with PMSM by Damir Gruncl - see more about these projects in the OTREES theses list https://gitlab.fel.cvut.cz/otrees/org/-/wikis/theses-defend

New release of #qtrvsim #riscv simulator for education. QtRvSim v0.9.8 adds Jiri Stefan's work on branch predictor. Its visualization extends cache, pipeline, memory and other visualization capabilities (https://github.com/cvut/qtrvsim/releases). Online version available at https://comparch.edu.cvut.cz/ . There is new WebEvaluator site link and description available (work of Jakub Pelc) for training on simple assembly and C tasks. The project will be discussed at RISC-V International Special Interest Group: Academia and Training meeting at October 10 2024 at 8 AM Pacific Time (5 PM CEST). The feedback is welcomed. I will be present on 2024 RISC-V Summit North America too.