C++ Middleware Writer VS stm32-hal

I use unique_ptr, but not as much as I used to. I've never used shared_ptr. This is my library that uses some C++ 2020 and 2017 features.

I started with Linux in the late 90s. I switched to FreeBSD around 2013 and returned to Linux a couple of years ago. Io_uring was the main reason I had to come back. At first I ported the back tier of my code generator back to Linux and then I ported the middle tier from being POSIX based to Linux.

Are there others that minimize multithreading and opt for multi-processing with single threaded processes? Call me a simpleton, but this approach eliminates some of the most difficult bugs by design. Here's an example of one of my single-threaded servers. The network io is asynchronous, but the file io is synchronous. Thanks

I've been working on this program for 13 years now. At one point it had 7 global variables and none of them were const. Now it has 4 global variables and 2 of them are const.

in one of my programs. I'm thinking about changing it to:

It's a merger of services and code generation: an on-line code generator that outputs low-level messaging and serialization code based on high-level input. It's implemented as a 3-tier system and uses output from the code generator in each tier. There's also a traditional library that's part of the repo.

Support for more data types for message lengths. Previously message lengths were always 4 bytes. I used this, for example, to reduce the size of the type used for message lengths between the front and middle tiers of the CMW from 4 bytes to 2 bytes.

More concretely, I use it to generate code that's used in each of the tiers mentioned above. The link is to one example of that.

Typestate-free HALs: This is in exchange for better ergonomics as the author claims. Only two HALs fall in this category right now which are the STM32-HAL & nRF-HAL.

As I worked with the stm32, as implied earlier, the HALs that I worked with were ones built around embedded-hal traits. Nevertheless, I came across a HAL at a certain point that adopted a different approach that felt more practical and easy to understand. This was the stm32-hal stm32-hal that I found to be more wholesome as it incroporated multiple families of the STM32 under a single HAL umbrella (my original expectation). The STM32-hal eliminates much of the trait confusion that I had encountered before. The thing is the stm32-hal does not seem to be mainstream yet. From what I understand, the HALs built with the mebedded-hal as a basis seem to be the ones mainly adopted by the embedded working group. Additionally, I am not sure if the stm32-hal has any equivalent counterparts for other manufacturer devices.

📝 At the time of writing this post, it came to my attention that there is an additional HAL that targets STM32 device families (the stm32-hal). From what I figure, right now there seem to be two approaches for developing HALs. The first approach is trait driven so to speak where the embedded-hal is used as a foundation. The second approach is more application-driven and provides a high-level API that targets several families of a device. However, this exists only for the stm32 through the stm32-hal. Right now, the first approach is what I found to be more widespread as it covers different microcontrollers and what this post is based on.

For STM32, check out the Peripheral Access Crates by the stm32-rs ream. For higher-level access, I wrote This HAL library for STM32. Works on most newer variants, and includes examples for specific peripherals, and simple applications.