amp-hal-st
sml
amp-hal-st | sml | |
---|---|---|
7 | 23 | |
47 | 1,086 | |
- | 2.8% | |
8.8 | 6.8 | |
5 days ago | 2 months ago | |
C | C++ | |
MIT License | Boost Software License 1.0 |
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amp-hal-st
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Looking for well written, modern C++ (17/20) example projects for microcontrollers
I can recommend having a look at: - https://github.com/philips-software/amp-embedded-infra-lib (stl-like replacement and utility library including a HAL definition - https://github.com/philips-software/amp-hal-st (HAL implementation for STs based on EMiL HAL) - https://github.com/philips-software/amp-preview (a GUI library for STs based on above mentioned repo's)
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Projects to Join
We want to add G0 and G4 support to https://github.com/philips-software/amp-hal-st you are more than welcome to try it out. We don't have a direct use for them (that is, you won't be working for free for Philips), but we see a lot of opportunities for these chip families to be used by other projects. The new C series night also be interesting for hobbyists (which is one of the reasons we open source this library).
- What is on your CI?
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Anybody else slow and dumb with this embedded and coding stuff?? Hours of trying to set the correct bits in the correct order with little success!
Simple solution: use a global catch-all interrupt handler that asserts when the "to handle" interrupt had no handler assigned :-) like this one https://github.com/philips-software/amp-hal-st/blob/main/hal_st/cortex/InterruptCortex.cpp
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Implementing callbacks using abstract classes in C++
If you want examples on how these HAL interfaces are implemented for a range of ST devices then you can take a look at https://github.com/philips-software/amp-hal-st
- Looking for modern CMake tutorials or good open spurce examples
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Writing STM32 Startup script in C++
Using amp-hal-st (https://github.com/philips-software/amp-hal-st) as an example. The easiest way to do it is to call HAL_NVIC_SystemReset();
sml
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Sharing Saturday #496
Anyway the need is not complicated, I need both entry and exit functions from every state, optionally allowing these functions to be coroutines (that's special sauce but for later), and an explicit state transition table which also have a way to say that a state can be accessed at any point. Also allow states to be state machines, optional FSM hierarchies. If you ignore the coroutine stuff it's pretty standard features these days, except that - Boost.MSM is quite archaic now (it was so novel when it was first released...) although it allows most of the features I talked about, I just think it will complicate my code unneecessarilly; - Boost-Ext.SML (not Boost) is almost perfect except it doesnt have entry/exit functions on states for some reason. Also last time we (as in in livestream) tried it in prototypes it didnt compile on msvc XD - Boost-Ext.SML2 is even better but still doesnt have entry/exit functions although it's in the plans.
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State machines with C++20 coroutines and Asio/Boost Async
Hello all. Being a huge fan of state machine and coroutines, I have been browsing around for examples of what other people do combine these two. I have been using boost-ext/sml for quite many projects and are quite happy about that. But when transitioning to code that relies on coroutines, I would like to write entry/exit/actions/guard methods that uses coroutines and where I can co_await on awaitables from Asio and more recently "Boost Async".
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Looking for well written, modern C++ (17/20) example projects for microcontrollers
boost-ext/sml: quite modern way of doing state machines using a DSL
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When Debug Symbols Get Large
I recently was troubleshooting a crash that backtraced through the boost::sml library [0]. The crash didn't actually have anything to do with the library, but it was used as the core event loop.
The backtrace -- as in, just the output from running `bt` in GDB -- was over a thousand wrapped lines long. There were ~5 stack frames that took up 200 lines of console each to print just the function name. That product's debug builds recently hit the 2GB line, which is enough that old versions of binutils complain.
I don't know what the solution is. There's some really neat stuff you can do with template metaprogramming, and in stripped release builds it compiles down extremely tiny. Plus the code is very clean to read. But it does feel like there isn't any kind of central vision for the C++ debugging experience, and bad interactions between highly-complex modern C++ typing, the compiler, and the debugger are probably only going to get worse unless somebody (the ISO committee? Vendors?) thinks really hard about debugging support.
[0]: https://github.com/boost-ext/sml
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[Boost::MSM] Huge Memory Usage Issue During Compilation
I'm a big fan of MSM but what you're experiencing is pretty normal for template-heavy libraries built on C++03 machinery (emulation of variadic templates is the usual culprit). It's probably not the answer you're hoping for, but the real solution is to switch to a library with more modern foundations. (I've been happily using [Boost::ext].SML for a few years but I'm reluctant to strongly recommend anything in particular since I haven't re-explored the problem space since I found it.)
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State machine suggestion?
The Boost one that you mention, seems to be one that it's kinda old. A "successor" of sorts is Boost SML. I've not used it yet, but certainly the first impressions are very good.
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Specifications for an open source finite state machine library
Or Boost.Sml
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Facts about State Machines
At our company, we rely a lot on https://github.com/boost-ext/sml
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What are some cool modern libraries you enjoy using?
I'm a big fan of boost::sml for representing state machines.
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[C++20] New way of meta-programming?
https://github.com/boost-ext/sml (State Machine DSL and backend for perfomance)
What are some alternatives?
amp-devcontainer - amp-devcontainer is a fully loaded devcontainer useable for, embedded, C++ or Rust development
hsm - Finite state machine library based on the boost hana meta programming library. It follows the principles of the boost msm and boost sml libraries, but tries to reduce own complex meta programming code to a minimum.
compile-time-init-build - C++ library for composing modular firmware at compile-time.
stm32plus - The C++ library for the STM32 F0, F100, F103, F107 and F4 microcontrollers
cppreference-doc - C++ standard library reference
hana - Your standard library for metaprogramming
cmake-project-skeleton - Reusable project skeleton for embedded C & C++ projects using CMake.
HFSM2 - High-Performance Hierarchical Finite State Machine Framework
stm32-cube-cmake-vscode - STM32, VSCode and CMake detailed tutorial
Experimental Boost.DI - C++14 Dependency Injection Library
cortex-m3-rtos - ARM Cortex-M3 Real-Time Operating System for educational purpose.
Boost.Beast - HTTP and WebSocket built on Boost.Asio in C++11