cortex-m
Windows-driver-samples
cortex-m | Windows-driver-samples | |
---|---|---|
6 | 12 | |
758 | 6,627 | |
2.6% | 0.9% | |
7.6 | 6.6 | |
4 days ago | 5 days ago | |
Rust | C | |
Apache License 2.0 | Microsoft Public License |
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cortex-m
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Rust fact vs. fiction: 5 Insights from Google's Rust journey in 2022
I do not have as strong of feelings as your parent, but:
1. A lot of the APIs make use of the typestate pattern, which is nice, but also very verbose, and might turn many people off.
2. The generated API documentation for the lower level crates relies on you knowing the feel for how it generates the various APIs. It can take some time to get used to, especially if you're used to the better documentation of the broader ecosystem.
3. A bunch of the ecosystem crates assume the "I am running one program in ring0" kind of thing, and not "I have an RTOS" sort of case. See the discussion in https://github.com/rust-embedded/cortex-m/issues/233 for example.
- Advisory: Miscompilation in cortex-m-rt 0.7.1 and 0.7.2
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Any frameworks in Rust for developing on SiFive / ST / NXP boards?
For cortex-m support, check out the cortex-m crate
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Getting panic when running Rust-Embedded code to set GPIO mode
See https://github.com/rust-embedded/cortex-m/tree/master/panic-semihosting
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A GPIO Driver in Rust
I don't think so. Once a function is compiled, it basically becomes a black box with a type signature so unless sleeping in a function affects its signature, that information is erased. If you pass in some kind of a sleep token that has to be used to sleep, then yeah I think you could enforce it by only being able to get that token in a non-atomic context and making it leak proof.
The Cortex-M crate does something similar, but for proving that you are in an atomic context. Another function that expects a CriticalSection type is then assured that it's running without interrupts enabled.
https://github.com/rust-embedded/cortex-m/blob/master/src/in...
- Would it be possible to run Rust on the new Raspberry Pi Pico?
Windows-driver-samples
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GOTOphobia Considered Harmful (In C)
The state machine example is definitely a very fitting use of goto, but it reminds me of another thing that seems to have become a rare skill but is very useful: flowcharting. Besides making people comfortable with goto in general, it also helps visualise control flow in ways that a lot of programmers these days don't realise, and it's unfortunate that a lot of courses seem to have omitted its teaching.
Also worth reading is "GOTO Considered Harmful Considered Harmful": https://news.ycombinator.com/item?id=11056434
And here Microsoft provides us with lovely example of such ridiculous nesting.
That's a very memorable example, but ultimately the true cause of that monstrosity is a clearly stupid API design; this is the API for a file picker, the recommended replacement for an existing one that they wanted to deprecate. In the existing one, you fill in a structure and call a single function with a pointer to it. In its replacement, you need to call a dozen methods on an object, and check for "possible" errors on each call, even if probably 99% of them only do things like assign to a field in a now-opaque structure and can never produce an error. Then the example code must've been edited by someone with severe gotophobia. (Not all MS code is like that --- they have plenty of other example code that uses goto, e.g.: https://github.com/microsoft/Windows-driver-samples/blob/mai... )
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Installing avssamp virtual camera driver in Windows 10
The source code for the sample can be found here. Check this code out to a local folder and use the included visual studio solution to open it up. You should be able to build this code as is; if it's telling you that you need spectre mitigated libraries to build it you can either acquire those via the visual studio installer or go to Project Properties > C++ > Code Generation > Spectre Mitigation and select disabled (I have it enabled so disabling it could cause issues, probably not though).
- how tf do you make a driver???
- Struggling with Windows Kernel data structures
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Toggling laptop touchscreen with a keyboard shortcut
This project was my first experience working with device drivers, and uses the Windows devcon utility to disable and re-enable a device driver.
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Audio Programming Question(s)
So a quick look at the Wikipedia site of "Virtual Audio Cables" reveals that it's based in n a custom windows driver. Based on that I would start here
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Question about Windows Drivers
Given that they're essential and worth about $1.8 million, then, it sounds like the proper solution would be to argue for the budget to engage a developer to write, test and sign a replacement driver. (Especially since the Intel 82930 USB test board is literally used by Microsoft as an archetypal example device in USB driver development documentation.)
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Has anyone gotten Pulseaudio to work on macOS Catalina for mixing audio into the microphone?
Maybe corresponding Windows API? https://github.com/microsoft/Windows-driver-samples/tree/master/audio/simpleaudiosample and https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/getting-started-with-wdm-audio-drivers.
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A GPIO Driver in Rust
Well yes. But Linus is right on that one.
I wouldn't say Windows drivers were C++, more like "C with Classes" (and maybe a little bit C++)
Also, Windows drivers are usually much more convoluted than Linux drivers https://github.com/microsoft/Windows-driver-samples
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Driver development using Rust.
A more practical resource are the various driver samples Microsoft provides: https://github.com/microsoft/Windows-driver-samples
What are some alternatives?
cortex-m-rt - Minimal startup / runtime for Cortex-M microcontrollers
Weylus - Use your tablet as graphic tablet/touch screen on your computer.
stm32-rs - Embedded Rust device crates for STM32 microcontrollers
rust - Empowering everyone to build reliable and efficient software.
rtic - Real-Time Interrupt-driven Concurrency (RTIC) framework for ARM Cortex-M microcontrollers
deskreen - Deskreen turns any device with a web browser into a secondary screen for your computer. ⭐️ Star to support our work!
wyhash-rs - wyhash fast portable non-cryptographic hashing algorithm and random number generator in Rust
bbqueue - A SPSC, lockless, no_std, thread safe, queue, based on BipBuffers
pico-examples
click - The Click modular router: fast modular packet processing and analysis
stm32-hal - This library provides access to STM32 peripherals in Rust.
spdlog - Fast C++ logging library.