Was testing out the annotate_snippets crate. For a split second I thought I had a compile error. So, it seems to be working! (annotate_snippets is the crate rustc uses/is gonna use for reporting errors)

Ok, so custom language for device-driver... What should it be the extension and name? .ddlang .ddsl (device-driver specification language) .ddd (device-driver description) It shouldn't overlap with anything popular that already exists... Any suggestions?

When using LLMs, it's very important to give clear instructions. Spec-driven development is the future. For example, a clear prompt to add two numbers could look like: ADD a TO b ON SIZE ERROR DISPLAY "Error" This specifies the overflow as well.

Zlib-rs is now feature-complete! We've released v0.6, the first version with a stable and complete API. The blog post has the details. With thanks to our maintainer Folkert de Vries, our contributors and @sovereign.tech. trifectatech.org/blog/zlib-rs... #rust #rustlang

Seems like the compiler gets mad when you have an enum with a reference field, that derives Debug and you then ask it to be repr(packed(1)) ICE: github.com/rust-lang/ru...

Ok, so when you read online "don't use chumsky for lexing, it's a bit slow", they're understating it! The same token output on ~60KB of text: Chumsky - 24ms 2.4 MB/s Logos - 0.45ms 130 MB/s That's 50x faster! Chumsky is still great for parsing though! Also it gives nicer/better errors than logos.

It appears the northern lights have made it over here. Very faint, can't really see it with the naked eye, but my camera can. Add note to myself: Travel up to the Arctic some time to really see it.

Lolol > Trump: Greenland is undefended! > Some countries: *send a handful of soldiers to Greenland to scout for a larger mission* > Trump: How dare they! So dangerous! Also, the US has been the only country threatening to invade Greenland. China and Russia haven't. So who's the bad guy?

Turns out writing a lexer and parser for device-driver is kinda fun! Makes it really appealing to ditch KDL. Lots to learn! I went to a pleb 'applied' university, so didn't get any courses with this stuff. Chumsky seems like a good bet. It's been treating me well so far.

If you would like to submit a talk to RustWeek 2026 there’s still time! Not much though, hurry! 2026.rustweek.org/cfp/

TIL: Cargo lets you use "host-tuple" as a target 👀 No need to remember your full target triple anymore! 🦀 #rustlang #cargo #rustdev #buildtools #cli

(retoot of my mastodon post) I'm having fun finding out how much less code Rust's integer functions generate for rp2350's RISCV cores (when all of it's bitmanip extensions are enabled): godbolt.org/z/1Geq5rdnv

Bevy 0.18 is out now! It features Atmosphere Occlusion and PBR Shading, Generalized Atmospheric Scattering Media, Solari features, PBR Fixes, Font Variations, Automatic Directional Navigation, Fullscreen Materials, Cargo Feature Collections, Camera Controllers, and more! bevy.org/news/bevy-0-...

Learning in the open I guess: github.com/diondokter/d... github.com/diondokter/d... No decision yet. But making device-driver be its own dedicated language is appealing to me...

Hmmm I need advice... So with device-driver I made a bet on KDL and Miette. But now the author has stepped away from open source. So what should I do now? - Just wait it out and see what happens - Fork and publish versions I maintain - Migrate to something new - Some other option?

I might have outdone myself with the generics :P Luckily users don't need to look at it! #device-driver #rust

"Integer number stored in binary format" As opposed to what? Sometimes adding extra info makes it more confusing. You mean it's just a normal integer? (And no, this chip doesn't use BCD which is the only alternative I can come up with)

oh i had this realization once

I love it when a plan comes together! github.com/diondokter/d... I think I figured out how I want to do multi-register reads and writes in device-driver :D I've wanted this feature for years. And I'm now able to make it super easy for the user.

Looking at multi-register transactions again for device-driver and I need your input. Have you ever used a chip (spi, i2c, etc) that supported mixing reads and writes within a single transaction? Did you ever use that?

Nice! Device-driver will now actually check the names of things. It didn't before and just passed it on to the generated code. If you knew what was going on, you'd know how to fix the errors. But if not, they were very confusing. So now d-d has actual rules!

Learn to write Embedded Rust Code to Control MAX7219 LED Matrix on Raspberry Pi Pico 2 pico.implrust.com/max7219/inde... In case, you want to learn how to create the max7219 library itself, refer the Rust Embedded Drivers Book red.implrust.com/max7219/inde... #rustlang #embedded

great, now there's /two/ numbers I have to get to 100% github.com/bearcove/tra...

📣 Mini announcement: I just cut the 0.2.x release of postcard2, which is where I'm working on what WILL be postcard v2.0.0. I'm doing this as a separate crate for now instead of making something semver-weird like postcard v2.0.0-rc.0. You can check it out here: docs.rs/postcard2

The wait is over! 📢 We are excited to announce the NEW version of Ratatui! 👨‍🍳🐁 🦀 A Rust library for cooking up TUIs (@ratatui.rs) 🧀 Highlights: ratatui.rs/highlights/v... ➡️ Our new website: ratatui.rs ⭐ GitHub: github.com/ratatui/rata... #rustlang #tui #ratatui #library #terminal #commandline

Gave myself a Christmas present :D After 2 months, I finally finished this PR: github.com/diondokter/d... This was not fun. But it makes the project so much nicer to work with as an end user. From now on I declare wrong/bad/unclear error messages to be bugs. Report them when you see them!

Linkers for embedded kinda suck, no? Do you work at a big company who could use a new one? At @tweedegolf.bsky.social we have some amazing people who could build an awesome new embedded linker. We should talk.

I've been wanting to try and start brain dumping some thoughts on (embedded) rust, how I approach problems, write HAL/device drivers, tools I use, etc. But, I'm terrible at starting to write unless I have specific questions to answer. So: ask me anything re: embedded/rust/hardware!

Second blog post from the Rust vision doc effort: blog.rust-lang.org/2025/12/19/w... Working through the data we gathered really helped sharpen my understanding here.

Tweede golf in 2025 was… over 80% #opensource! As a service provider working across the commercial, government, and non-profit sectors, we are extremely proud (and honestly pretty amazed) that 86% of our code written in 2025 was open-source! Thanks to our clients and funders! (1/3)

Shout out to @erk.dev for writing a new clippy lint to catch the surprising "`for i in `0..` {}` loops forever" behavior I bumped into this week!

If you are a cybersecurity policymaker in Europe, or know someone who is, please reach out to @hugovandepol.bsky.social!

Just released sequential-storage 7.0.0. It has changed the API concept from global functions to a struct with methods. This should reduce some of the boilerplate and it reduces the amount of panic paths in your binary. Enjoy! docs.rs/sequential-s... github.com/tweedegolf/s...

Oof, found a bug in some modbus code. Reminder: check CRC *before* you trust any of the bytes Seems like I have a PR to make tomorrow!

Rust in Linux will no longer be experimental! lwn.net/Articles/104...

How do you test code that a CI machine won't run? To support avx-512 SIMD instructions in zlib-rs, we taught Miri how to emulate them. trifectatech.org/blog/emulati... #rustlang

One thing I wish MCU silicon vendors would do (e.g. STM32, Nordic) is be more upfront on the "bill of material" of IP blocks they use in their chips. Many different chips re-use the same IP blocks for UARTs, SPI, DMA, etc. Knowing when this is/isn't the case makes writing drivers WAY easier.

A Safety Certified (SIL 2) Rust libcore is shipping today! Hats off to my colleagues for this extraordinary feat. ferrous-systems.com/blog/ferroce...

The STM32C011J4M6TR is now only €0.26 on digikey That's cheap! You get: - A full blown 32-bit cortex-m core - 48MHz - 6 I/O pins - 16kb flash - 6kb ram - ADC - 4 timers - and more Sleep current is a bit high though (comparable with ATmega328P)

Do I know github action CI enjoyers? I have an issue and would love some help or feedback :) github.com/tweedegolf/s...

Also asking, because it's pretty common to want to track things like code size over time, and see the impact of PRs over time on things like static RAM/flash usage for embedded projects.

Welly, my employer didn't even check if I managed to finish the almost impossible goal they set me before they let me go. Anybody looking for a software developer with experience in among others Rust/C#/React/Svelte. I've done a lot of embedded Rust for private projects as well

New RFC from my colleague Folkert: github.com/rust-lang/rf... Getting trustzone-m support in the compiler.

How about Rust for real-time applications? @diondokter.nl gets you started: buff.ly/g8qruby #rustlang #embedded

Segment LCD screens are now supported in Embassy for STM32 :D github.com/embassy-rs/e...

🦀 Bad news everyone - unwrap() is the reason behind cloudflare outage >The FL2 Rust code that makes the check and was the source of the unhandled error is shown below blog.cloudflare.com/18-november-... #rustlang

I forgot how cool the STM32U3 is. If you've got the hardware skills, there's so much you can optimize for low power

New Rust survey! Are you totally happy with the project, or worried it's going in the wrong direction? Let them know! Now is your chance

The Rust Foundation has joined orgs across industry & open source to call for a more secure, memory-safe future for Europe. The path to safer digital infrastructure is clear — & it starts with modern, memory-safe tech. Read the joint statement & add your support: