Lightnews — Scholar-powered news

Gus Workman

@gworkman.bsky.social

240 followers 170 following 290 posts

Hardware/software engineer currently hacking with #ElixirLang and #Nerves. Founder of protolux.io - currently available for B2B contracts in Elixir (including Phoenix and Nerves), embedded firmware, and custom PCB design

Posts Media Videos Starter Packs

Gus Workman @gworkman.bsky.social · 3d

As I understand you’re pretty deep into the python/micropython side of things.

If you ever want to give Elixir/Nerves a try, I would be happy to help out where I can! It’s a really neat framework :)

Gus Workman @gworkman.bsky.social · 3d

Yeah it’s certainly an annoying problem. I really think Elixir/Erlang binary pattern matching does it in one of the best possible ways. Works in case statements, match operator, even function heads.

Gus Workman @gworkman.bsky.social · 3d

Makes sense! The BMP280 is a great example library :)

Gus Workman @gworkman.bsky.social · 3d

Here’s some examples of how you would see the bitmapping in a datasheet.

Values can be integers, enums, booleans, signed, unsigned, etc etc. That’s where elixirs binary pattern matching is really powerful! In the end, your code just looks how it is defined in the manufacturers documentation

Except of a datasheet from MCP7940M, an RTC chip. It shows the RTCHOUR register definition

Except of a datasheet from MCP7940M, an RTC chip. It shows the RTCSEC register definition

Except of a datasheet from LSM6DSV, an IMU chip. It shows the WAKE_UP_THS register definition

Except of a datasheet from LSM6DSV, an IMU chip. It shows the CTRL_2 register definition

1 1

Gus Workman @gworkman.bsky.social · 3d

Oh man I got called out in this one 😂

But this is actually a perfect example. Chip designers love putting random config bits in unrelated registers. Adding additional registers requires more transistors, more processing, more verification, etc so they cram it all into as few as possible.

A screenshot of Peter’s blog post which calls me out specifically 😂

2 5

Reposted by Gus Workman

Peter Ullrich @peterullrich.com · 3d

🚨 New Blog Post 🚨

EXTRA EXTRA! Hot off the press! The power of binary pattern matching revealed! The in-depth investigation you don't wanna miss! Get your copy now! #ElixirLang

peterullrich.com/binary-patte...

Binary Pattern Matching in Elixir

Decode bits and bytes into meaningful parts using the magic of Elixir pattern matching.

peterullrich.com

1 9 24

Gus Workman @gworkman.bsky.social · 4d

Elixir’s binary pattern matching syntax is absolutely amazing for working with embedded stuff. Looking forward to the blog post!!

Reposted by Gus Workman

Code BEAM @codebeam.bsky.social · 5d

Hands-on hardware with Nerves! Writing e-ink drivers in Elixir, learning SPI protocols with @gworkman.bsky.social .Build firmware, take home your board! Save your spot! codebeameurope.com/trainings/di...

5 14

Gus Workman @gworkman.bsky.social · 5d

😭 we missed you! Next time :)

The recording is already up if you want to see what you missed:

nervesmeetup.eu @nervesmeetup.eu · 5d

Thanks everyone for coming out last night to our inaugural meetup! We had a great discussion about running containers on Nerves by @steffend.me. Hope to see everyone for the next one on Nov. 12!

Another thanks to @captchrisd.bsky.social for uploading the recording so quickly! You can watch below:

www.youtube.com

Gus Workman @gworkman.bsky.social · 5d

It really was! About 90% attendance rate from the registered participants, which is amazing.

I hope if people enjoyed it, we can spread the word!

Gus Workman @gworkman.bsky.social · 5d

Me either! Hoping that we can develop a strong Nerves community :)

❤️🧡💛💚💙💜

1 1 3

Gus Workman @gworkman.bsky.social · 6d

Very very very happy with how the first Nerves Meetup EU turned out. Thanks everyone for joining :)

@steffend.me knocked it out of the park with his presentation. The twist at the end was amazing! Recording will hopefully be up soon

2 8