edn
rp-hal
Our great sponsors
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
edn
-
Apple releases Pkl – onfiguration as code language
> was utterly surprised how no one ever apparently has thought to create a configuration/templating system that's basically a fancy library on top of Scheme.
There's Clojure's extensible data notation: https://github.com/edn-format/edn
- Why the fuck are we templating YAML? (2019)
-
I made a basic python client and ORM for XTDB
A thin language layer around edn/datalog, the query language
-
What Is Wrong with TOML?
EDN (Extensible Data Notation) is a subset of Clojure: https://github.com/edn-format/edn
It is:
- Streamable
- Extensible
- Whitespace-insensitive, but there are formatting conventions for readability
-
The real reason JSON has no comments
To begin with, EDN is somewhat like the JSON of Clojure. And regarding the code is data/data is code nature of Clojure, it is Clojure. It doesn't have some of the vagaries of JSON, and it is also extensible.
-
Ron: Rusty Object Notation
Alien is not a reason something is bad, just that's it's unusual. JSON was a bit alien when it first arrived as well, as everyone was used to XML at the time.
`{num 5, val 4}` looks fine to me, but we can do even better! We already know objects/maps are always in pairs, so we don't really need that comma either. Just do `{num 5 val 4}` and we save yet another unnecessary characters.
Of course, I didn't come up with this format myself, what I actually want JSON to be is EDN (https://github.com/edn-format/edn) which is a standalone format but also directly used in Clojure, so it already exists inside a programming language and works very well. There keys are strings though, so you example would end up being `{"num" 5 "val" 5 "person" var}`, where commas are optional.
-
JSON vs. XML with Douglas Crockford
I just checked out the spec, and it gets pretty ugly in the Table section. A lot of the json examples are both shorter and IMO more precise. Stuff that’s not allowed with [table] is allowed with [[table]], and it’s confusing to understand what level of depth I’m at.
I’ll take edn over any of “em. https://github.com/edn-format/edn
-
Taming the Time: how to install & develop with XTDB
As XT is written in Clojure and it natively supports Clojure’s data types, we were not satisfied with available JSON types and decided to give EDN a try - that way we would have way more supported types:
-
Design patterns are a solution to the problem OOP itself creates
Compare the nightmare that is pickling with how simple it is to serialize pure data with edn in clojure. What ends up happening is people passing around JSONs or whatever and writing parsing/encoding code at each end, which makes things unnecessarily more complex, and dangerous, and error prone, and boring, etc...
- The YAML Document from Hell
rp-hal
-
Embedded Swift on the Raspberry Pi Pico
probably, I didn't really check it, but I found [1]. Rust has a lot of support for embedded systems, even from the companies that provide the chips, like STM and Espressif.
[1] https://github.com/rp-rs/rp-hal
- Rp-hal: a Rust Embedded-HAL for the pi pico series microcontrollers
-
I built a column staggered keyboard with firmware written in Rust!
About the same time, I was learning Rust and discovered how it could be used on embedded targets from Low Level Learning on YouTube, the video introduced me to the amazing rp-hal crate that provides abstractions to talk to the Raspberry Pi Pico microcontroller. Getting used to the no_std mode took some time, the most challenging was not being able to collect an iterator to a container.
-
How can I access the Pico W's LED with the rp-hal crate?
Well, just as I posted this, I came across the issue on Github: https://github.com/rp-rs/rp-hal/issues/525
-
&[u8] to *const u8
Have a read of https://github.com/rp-rs/rp-hal/issues/257 for more info.
-
Question: Elegant way of getting a 'static reference?
I've made an example for a RPI Pico (PR for the RP2040 HAL project here) .
-
Pico as a usb hid without circuitpy
Here's an example: https://github.com/rp-rs/rp-hal/blob/main/boards/rp-pico/examples/pico_usb_twitchy_mouse.rs
-
Learning Embedded rust
Embedded rust for the raspberry pi pico: https://github.com/rp-rs/rp-hal
-
The Rise of Rust, the ‘Viral’ Secure Programming Language That’s Taking Over Tech
What are you on about, can you clarify? Rust can compile in no-std/embedded style just as fine (or better) than C can for basically any ARM or RISCV based processor, and quick googling shows this hal for nearly all pi needs and even MEGA65 is "as supported" (read: not at all officially by anything, fan-only) as any current C compiler. Setting up rust for a new target, so long as the code-gen is supported somehow by LLVM, LLVM plugin, LLVM IR transpiler (and maybe libgcc-jit sort of soon) is just as painful or unpainful as setting up a whole team to work via C/C++ with comparable testing harnesses. This doesn't mean easy and is an area Rust is still improving rapidly by the various enterprise agencies (Ferrous systems, Oxide, more I can't remember...) who specifically want to bring rust to such low end hardware because frankly both C and C++ suck with vendor proprietary tool chains and quirks.
-
"pub use bare_metal::CriticalSection;" Error
He says he can't find crate for 'bare_metal'. He was setting up and testing the HAL for the pico (https://github.com/rp-rs/rp-hal). While compiling it pulls down critical-section-0.2.7/src/lib.rs and bars on line 7
What are some alternatives?
json - JSON for Modern C++
tutorials - 📚 Stash of tutorials completed for learning cool stuff.
EPOE-Forked - Github repository for EPOE-Forked
embassy - Modern embedded framework, using Rust and async.
jq - Command-line JSON processor [Moved to: https://github.com/jqlang/jq]
rlox
yamllint - A linter for YAML files.
rp2040-project-template - A basic rp2040-hal project with blinky and rtt logging example code. With this you can quickly get started on a new rp2040 project
dhall-lang - Maintainable configuration files
avr-hal - embedded-hal abstractions for AVR microcontrollers
json - A tested JSON parser / serializer
teaching-material