embassy
rp-hal
embassy | rp-hal | |
---|---|---|
70 | 30 | |
4,377 | 1,261 | |
4.3% | 2.6% | |
9.9 | 9.3 | |
6 days ago | 1 day ago | |
Rust | Rust | |
Apache License 2.0 | - |
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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.
embassy
- Embassy 在 Blue Pill 上的点灯案例
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Why choose async/await over threads?
thanks. looked that up. for the curious: https://embassy.dev/
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Accessing the Pinecil UART with Picoprobe
Running the Embassy RP2040 USB CDC ACM serial example takes about 5 seconds on a Pico.
https://github.com/embassy-rs/embassy/blob/main/examples/rp/...
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Avoid Async Rust at All Cost
Async solves different problems, you can, for instance, have just a single-threaded CPU and still have a nice API if you have async-await. It might not be so cool at a higher level as Go's approach of channels and threads, but it's cool in embedded, read this:
https://github.com/embassy-rs/embassy?tab=readme-ov-file#rus...
"Rust's async/await allows for unprecedently easy and efficient multitasking in embedded systems. Tasks get transformed at compile time into state machines that get run cooperatively. It requires no dynamic memory allocation, and runs on a single stack, so no per-task stack size tuning is required. It obsoletes the need for a traditional RTOS with kernel context switching, and is faster and smaller than one!"
I'm just toying with Raspberry Pi Pico and it's pretty nice.
Go and Rust have different use cases, the async-await is nice at a low level.
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Is anyone using coroutines seriously?
I have not yet dipped by toes in the Rust waters, but reading about the embassy project is actually what piqued my curiosity about using C++ coroutines in embedded. Are you familiar with the project or have you found it lacking?
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The state of BLE and Rust (no_std)
I think I get the basics (shoutout to the Rust Embedded Working Group!), and I've started looking for the stack I'd be using. I think Embassy is really amazing, as well as the work of the ESP team -- hats off.
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Rust newcomers are 70x less likely to create vulnerabilities than C++ newcomers [pdf]
> }
And this is how to do it using embassy, which is an async framework for embedded in rust:
https://github.com/embassy-rs/embassy/blob/main/examples/rp/...
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The State of Async Rust
> not good for embedded
embassy begs to differ
https://embassy.dev/
async/await is really just a syntax for building state machines in a way that resembles regular code. It's compiled down to the same code that you would write by hand anyway (early on it had some bloat in state size but I think it's all fixed now).
And embedded has a lot of state machines!
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Asynchronous Rust on Cortex-M Microcontrollers
You can run multiple executors at different interrupt priority levels (with multiple tasks per executor), which allows tasks on the higher priority executor to interrupt other tasks. Here's an example https://github.com/embassy-rs/embassy/blob/main/examples/nrf...
- Espressif advances with Rust – 30-06-2023
rp-hal
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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
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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.
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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
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&[u8] to *const u8
Have a read of https://github.com/rp-rs/rp-hal/issues/257 for more info.
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Question: Elegant way of getting a 'static reference?
I've made an example for a RPI Pico (PR for the RP2040 HAL project here) .
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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
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Learning Embedded rust
Embedded rust for the raspberry pi pico: https://github.com/rp-rs/rp-hal
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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.
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"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?
rtic - Real-Time Interrupt-driven Concurrency (RTIC) framework for ARM Cortex-M microcontrollers
tutorials - 📚 Stash of tutorials completed for learning cool stuff.
rusty-clock - An alarm clock with environment stats in pure bare metal embedded rust
rlox
smoltcp - a smol tcp/ip stack
edn - Extensible Data Notation
rust-mos - Empowering everyone to build reliable and efficient software.
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
nrf-hal - A Rust HAL for the nRF family of devices
avr-hal - embedded-hal abstractions for AVR microcontrollers
async-std - Async version of the Rust standard library
teaching-material