Super-Simple-Tasker
MiROS
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| Super-Simple-Tasker | MiROS | |
|---|---|---|
| 3 | 7 | |
| 130 | 73 | |
| 4.6% | - | |
| 4.8 | 0.9 | |
| 2 months ago | about 1 year ago | |
| C | C | |
| MIT License | GNU General Public License v3.0 only |
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Super-Simple-Tasker
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At what point would you consider using an RTOS?
Lately I have been working with interrupt driven task frameworks on ARM Cortex-M. Basically they are using the ARM NVIC as a task scheduler. Examples for C/C++ include this one: Super Simple Tasker. For Rust there is RTIC. Both are based on similar ideas of using NVIC as scheduling engine. Very efficient resource-wise but use a somewhat different programming paradigm than traditional RTOS threads.
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Seeking Innovative Project Suggestions
Take a look at the open-source Super-Simple Tasker project on GitHub. This project implements a preemptive RTOS/scheduler in the hardware of the ARM Cortex-M. It is related to such concepts and projects as:
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How to deal with fast control loops in a RTOS environment?
I agree with KenaDra that such a kernel would be ideal for fast control loops and hard real-time requirements, so the OP should definitely take a look. Specifically for STM32 (ARM Cortex-M), there are some hardware implementations of such kernels that take advantage of the NVIC. An example is the SST for ARM Cortex-M. This kernel will outperform any traditional RTOS kernel on Cortex-M.
MiROS
- Beginners Project
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Where should I start if I want to learn embedded systems ?
Have you checked this one? https://www.state-machine.com/quickstart
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Do World Need Another RTOS?
You can check out the YouTube videos [about building your own minimal RTOS](https://www.youtube.com/playlist?list=PLPW8O6W-1chyrd_Msnn4LD6LBs2slJITs). This minimal RTOS (called MiROS) is used as a teaching aid. The project is also available on GitHub.
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How can I do a context switch with rust?
I've checked out C implementations like os h and (MirOS)[https://github.com/QuantumLeaps/MiROS] but when I port them to rust (even with C2Rust) they cause hard faults too.
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A Tiny RTOS Simply Explained
To see "A Tiny RTOS Simply Explained" you might want to watch the RTOS video playlist on YouTube. The videos teach about the RTOS by building a "Minimal Real-Time Operating System" (MiROS) for ARM Cortex-M, which is available on GitHub.
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path of learning the arm cortex-m embedded c programming?
For example, in the segment about the RTOS, you witness building a "Minimal Real-time Operating System "MiROS". The MiROS code is available on GitHub, and you can keep adding to it other features. Building a functional RTOS is a great way to learn about RTOSes.
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How to find out how to write an operating system
You will build there a small "Minimal Real-time Operating System (MiROS)" for ARM Cortex-M. You will start with performing context switching manually, and then you will automate the process in assembly. Then you will build schedulers, first time-slicing round-robin and then preemptive, priority-based. You will learn about real-time and Rate Monotonic Scheduling. You will see how all this works using a logic analyzer. The RTOS code, and the examples are available on GitHub.
What are some alternatives?
lwesp - Lightweight and versatile AT parser library for ESP8266 and ESP32 devices.
modern-embedded-programming-course - Companion repository to the "Modern Embedded Systems Programming" video course.
rulos - Ravenna Ultra-Low-Altitude Operating System: An embedded OS for AVR and ARM CPUs
QuarkTS - An open-source OS for embedded applications that supports prioritized cooperative scheduling, time control, inter-task communications primitives, hierarchical state machines and CoRoutines.
crect - A C++, compile-time, reactive RTOS for the Stack Resource Policy based Real-Time For the Masses kernel
OOP-in-C - Simple and efficient implementation of OOP in C suitable for real-time embedded systems.
PIF-Image-Format - Image format, tools & librares for limited embedded systems
cortexm-threads - Simple context switching library for ARM Cortex-M MCUs in Rust
qpcpp - QP/C++ Real-Time Embedded Framework/RTOS for embedded systems based on active objects (actors) and hierarchical state machines
ChaOS - Simple RTOS for cortex-m processors
os.h - A simple context switcher for Cortex-M0 processors
EmbeddedProto - Embedded Proto is a C++ Protocol Buffers implementation specifically suitable for microcontrollers. It is small, reliable and easy to use.