jtrueb

8 ms·

31.
by jtrueb 2y ago
The nRF54L15 looks better in most aspects. I mention the nRF52840 as it is a veteran in the space with a rich ecosystem at 1mm larger.
32.
by jtrueb 2y ago
Is this not just a worse version of the nRF52 and nRF54 lineup? Larger size, fewer hardware peripherals, lower radio sensitivity. What is the new thing for this chip?
33.
by jtrueb 2y ago
A lot of folks in this thread say rollback to a known firmware version is required. Where are they getting all this microcontroller ROM?
34.
by jtrueb 2y ago
Anyone have recommendations for chip datasheets? Ive explored a couple options so far, but getting some bitfields wrong is super annoying. I see plenty of examples like the one here that are on easier extractions. A PDF to HTML or Markdown
35.
by jtrueb 2y ago
Polars + Parquet is awesome for portability and performance. This post focused on python portability, but Polars has an easy-to-use Rust API for embedding the engine all over the place.
36.
by jtrueb 2y ago
You left out Leptos!
37.
by jtrueb 2y ago
Xcode is so slow and painful that I primarily use Cursor now to pseudo-lint, format, and generally edit. Switching over to Xcode just for the things that have to be done in Xcode. There is something wrong with the IDE if an LLM has better r
38.
by jtrueb 2y ago
You can keep telling this, but this “esoteric” math is often too much for the people actually implementing the filters.
39.
by jtrueb 2y ago
Every time that one comes up, this one comes up https://github.com/rlabbe/Kalman-and-Bayesian-Filters-in-Pyt... (and vice versa)
40.
by jtrueb 2y ago
Yes, I’m just saying how it kicks in basically immediately (O1).
41.
by jtrueb 2y ago
Interesting how higher optimization levels didn’t really help speed up rust in the O level comparison
42.
by jtrueb 2y ago
If there was a good headline on here to drop in the “Written in Rust” slug, this would be it.
43.
by jtrueb 2y ago
Which statically typed language do you find most agreeable? Same question for any language.
44.
by jtrueb 2y ago
The main executor that you get when main is spawned is preemptive. You can do compression, math, etc there for as long as you like. You can spawn other executors from the main with assigned priorities. Using SWI executors for high priority
45.
by jtrueb 2y ago
Async embedded rust is fantastic. Absolutely nailed it once a couple more unstable features stabilize. Also on cortex-m, you can put an executor on each cooperative priority but also you can put an executor on the main priority. That means
46.
by jtrueb 2y ago
Is it a minority? Are there stats posted for this? Only recently have I had some projects switching to stable after their required features stabilized.
47.
by jtrueb 2y ago
Hey, that’s our stuff. we do a ton of different types of battery free stuff beyond this. Check out bioelectronics.northwestern.edu and rogersgroup.northwestern.edu
48.
by jtrueb 2y ago
This has nothing to do with SEGGER JLink. I wonder which is older.
49.
by jtrueb 2y ago
I would totally use a Swift-style concise defer. Writing the idiomatic wrapper struct and implementing Drop is obtuse and repetitive. Both wrapper structs and the scopeguard macro approach have to be wasting compilation time. I have a lot o
50.
by jtrueb 2y ago
async_std is a nonstandard choice these days, no? I assume this is related to the style of blocking spawned work?
51.
by jtrueb 2y ago
“This highlights one of the main disconnects between "async advocates" and "sync advocates", which is, when we say something is blocking, what, exactly, is it blocking?” When I have work on a cooperatively scheduled exec
52.
by jtrueb 2y ago
I think scientific computing in Rust is getting too much attention without contribution lately. We don't have many essential language features stabilized. SIMD, generic const exprs, intrinsics, function optimization overrides, and reas
53.
by jtrueb 2y ago
It is a low-pass filter in the frequency domain with a roll-off that is not smooth. I quite like [1] as a quick reference. https://www.analog.com/media/en/technical-documentation/dsp-...
54.
by jtrueb 2y ago
How do you use those outside of Latex? Lots of figures are coming from Matlab or Python, where Latex is a non-starter. Is there a cookbook to pollinate?
55.
by jtrueb 2y ago
Quit using Excel in research!
56.
by jtrueb 2y ago
I’m sure there are others, but as mentioned elsewhere in this thread ESP32 or NRF70 could take care of this for a lot less (off of bare metal or RTOS if you just need WiFi and Camera.)
57.
by jtrueb 2y ago
Just stay booted and use a lower power microcontroller … 105mA … that’s not the right order of magnitude
58.
by jtrueb 2y ago
That was pretty toxic for a kneejerk reaction.
59.
by jtrueb 2y ago
I made humanize-bytes[1] for that formatting reason (1000 vs 1024). Coincidentally, it uses smartstring to avoid allocations. [1] https://crates.io/crates/humanize-bytes
60.
by jtrueb 2y ago
Agreed, as much as there are complaints about usability of async in Rust, many alternatives proposed would fail in resource constrained systems. Green threading would be impossible or very limiting on embedded, where each stack eats away at

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