Using the Rust standard library with the NuttX RTOS

#1

Post by fork-bomber » Mon, Jan 27, 2025, 6:16 PM UTC

Using the Rust standard library with the NuttX RTOS
lupyuen.org

Re: Using the Rust standard library with the NuttX RTOS

#2

Post by the__alchemist » Mon, Jan 27, 2025, 7:10 PM UTC

Interesting. RTOS is a major embedded ecosystem component that rust currently lacks.

For anyone not familiar: NuttX is notable as the RTOS used on the open-source PX4 flight controller firmware, which is ubiquitous in commercial UASs.

Re: Using the Rust standard library with the NuttX RTOS

#3

Post by kbaker » Mon, Jan 27, 2025, 7:15 PM UTC

the__alchemist wrote: post #2

Interesting. RTOS is a major embedded ecosystem component that rust currently lacks. For anyone not familiar: NuttX is notable as the RTOS used on the open-source PX4 flight controller firmware, which is ubiquitous in commercial UASs.

https://arewertosyet.com/

has a big list. The definition of what is an RTOS and how much is in software vs hardware is a blurry area.

https://rtic.rs/2/book/en/#is-rtic-an-rtos

Re: Using the Rust standard library with the NuttX RTOS

#4

Post by junon » Mon, Jan 27, 2025, 7:29 PM UTC

Not sure if the author is the one who added support but it'd be great to get a somewhat in depth explanation as to how a target was added to Rust! The docs surrounding this kind of... leave a lot to the imagination.

Re: Using the Rust standard library with the NuttX RTOS

#5

Post by vdjskshi » Mon, Jan 27, 2025, 7:30 PM UTC

the__alchemist wrote: post #2

Interesting. RTOS is a major embedded ecosystem component that rust currently lacks. For anyone not familiar: NuttX is notable as the RTOS used on the open-source PX4 flight controller firmware, which is ubiquitous in commercial UASs.

There's Hubris, https://github.com/oxidecomputer/hubris

Re: Using the Rust standard library with the NuttX RTOS

#6

Post by vollbrecht » Mon, Jan 27, 2025, 7:40 PM UTC

the__alchemist wrote: post #2

Interesting. RTOS is a major embedded ecosystem component that rust currently lacks. For anyone not familiar: NuttX is notable as the RTOS used on the open-source PX4 flight controller firmware, which is ubiquitous in commercial UASs.

The espressif ESP-IDF sdk that is using FreeRTOS underneath has rust + std support for quite some time now.

Re: Using the Rust standard library with the NuttX RTOS

#7

Post by AlotOfReading » Mon, Jan 27, 2025, 7:42 PM UTC

the__alchemist wrote: post #2

Interesting. RTOS is a major embedded ecosystem component that rust currently lacks. For anyone not familiar: NuttX is notable as the RTOS used on the open-source PX4 flight controller firmware, which is ubiquitous in commercial UASs.

Rust has some very competent RTOSes already like Tock / OxidOS and PikeOS. It's great to see support for NuttX, but it's Rust isn't completely lacking for options here.

Re: Using the Rust standard library with the NuttX RTOS

#8

Post by fellowmartian » Mon, Jan 27, 2025, 7:44 PM UTC

the__alchemist wrote: post #2

Interesting. RTOS is a major embedded ecosystem component that rust currently lacks. For anyone not familiar: NuttX is notable as the RTOS used on the open-source PX4 flight controller firmware, which is ubiquitous in commercial UASs.

Actually, Rust embedded ecosystem exists and is amazing. It’s a breath of fresh air after having to use vendor SDKs from ST, Nordic, and even Raspberry Pi.

Re: Using the Rust standard library with the NuttX RTOS

#9

Post by ost-ing » Mon, Jan 27, 2025, 7:45 PM UTC

the__alchemist wrote: post #2

Interesting. RTOS is a major embedded ecosystem component that rust currently lacks. For anyone not familiar: NuttX is notable as the RTOS used on the open-source PX4 flight controller firmware, which is ubiquitous in commercial UASs.

There is embassy and rtic, albeit they are quite lightweight

Re: Using the Rust standard library with the NuttX RTOS

#10

Post by loeg » Mon, Jan 27, 2025, 7:54 PM UTC

So like, taking a step back, is NuttX POSIX or POSIX-like (if there's a file namespace with /dev in it / you can use the Nix package)?

And... does it have a global memory allocator (using stdlib packages that use alloc)? I can't really tell if this is an RTOS for microcontrollers or like, 32-bit ARM and don't have any background on it. And how does that interact with RTOS guarantees?