RIOT
RIOT - The friendly OS for IoT (by RIOT-OS)
FreeRTOS-Kernel
FreeRTOS kernel files only, submoduled into https://github.com/FreeRTOS/FreeRTOS and various other repos. (by FreeRTOS)
| RIOT | FreeRTOS-Kernel | |
|---|---|---|
| 40 | 12 | |
| 5,505 | 3,167 | |
| 1.1% | 4.0% | |
| 9.9 | 9.0 | |
| 1 day ago | 25 days ago | |
| C | C | |
| GNU Lesser General Public License v3.0 only | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
RIOT
Posts with mentions or reviews of RIOT.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-07-04.
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Moving to a RTOS on the RP2040
RIOT would be another alternative
https://github.com/RIOT-OS/RIOT
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Comp Sci Student Interested in Embedded
RIOT-OS is somewhat popular in academia, it tries to be very approachable but there are still plenty of low hanging fruits with all kinds of hardware and you can use it for software and thesis projects.
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Open source embedded projects
Just one example: https://github.com/RIOT-OS/RIOT
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Is Mbed still relevant?
You could also take a look at RIOT-OS. http://riot-os.org
- Woke up today to my first ever pull request of one of my public repos! Wait... oh... oh god...
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Looking for a GitHub repo which contains unit tests
RIOT-OS has a lot of unit tests for all the boards they support. And it's written in C. https://github.com/RIOT-OS/RIOT/tree/master/tests
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What's the best book and microcontroller to learn embedded design?
Another option is using RIOT-OS. But that unfortunately doesn't support PWM for the Weact. It does support PWM for the Bluepill and Blackpill STM32f103 and the Nucleo-f446 After quick search. \ https://riot-os.org
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What should I buy to begin learning embedded systems development?
If you want to use C, I would suggest trying out RIOT-OS. It's a modern embedded operating system, written in C and focussed on IOT. It works on a lot of different boards. https://github.com/RIOT-OS/RIOT
- Best kit to get started using C.
- RIOT-OS 2022.10 ยท Release Notes
FreeRTOS-Kernel
Posts with mentions or reviews of FreeRTOS-Kernel.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-06-29.
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what do people usually do to separate/abstract platform dependent codes/files
Here is the port - https://github.com/FreeRTOS/FreeRTOS-Kernel/tree/main/portable/ThirdParty/GCC/Posix
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TI CC2630: Having trouble deciding Contiki vs TI-RTOS
Freertos has support for generic cortex m3: https://github.com/FreeRTOS/FreeRTOS-Kernel/tree/main/portable/GCC/ARM_CM3 It could very well work almost out of the box with your mcu.
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Ted Ts'o: "As an OS engineer, I deeply despise these optimization tricks, since I personally I care about correctness and not corrupting user data far more than I care about execution speed"
the only OS written in iso c i found was RTOS and they have open bug reports due to strict aliasing in simple things like their linked list implementation, which they don't bother to fix because somehow that causes even more problems (?!): https://github.com/FreeRTOS/FreeRTOS-Kernel/pull/54
- HELP
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Arduino or full featured RTOS?
You likely put the requirements of POSIX just to have an excuse. Fyi, FreeRTOS kernel, the only thing you need, is here: https://github.com/FreeRTOS/FreeRTOS-Kernel/
- Ask HN: Examples of Microkernels?
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Ask HN: Embedded Projects to Learn From?
- https://github.com/FreeRTOS/FreeRTOS-Kernel (architecture, C)
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Nutshell custom memory allocators for me
FreeRTOS comes with 5 quite simple reference implementations of the heap memory allocator. You can study how it works.
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Using FreeRTOS and dual core RP2040
The main branch is single-core. You're looking for the SMP branch.
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C programmers scare me
On non-POSIX systems, malloc & free are implemented differently. EG FreeRTOS has some very simple malloc (and optionally free) implementations, eg heap_2.c (has malloc & free, but doesn't consolidate blocks), or heap_4.c (more complex, tries to prevent fragmentation by consolidating blocks, still less optmized & simpler than the glibc malloc/free used by most Linux systems).
What are some alternatives?
When comparing RIOT and FreeRTOS-Kernel you can also consider the following projects:
zephyr - Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
HomeSpan - HomeKit Library for the Arduino-ESP32
mbed-os - Arm Mbed OS is a platform operating system designed for the internet of things
mongoose-os - Mongoose OS - an IoT Firmware Development Framework. Supported microcontrollers: ESP32, ESP8266, CC3220, CC3200, STM32F4, STM32L4, STM32F7. Amazon AWS IoT, Microsoft Azure, Google IoT Core integrated. Code in C or JavaScript.