zephyr
FreeRTOS-Kernel
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zephyr | FreeRTOS-Kernel | |
---|---|---|
57 | 12 | |
9,582 | 2,332 | |
3.4% | 5.7% | |
10.0 | 9.4 | |
4 days ago | 5 days ago | |
C | C | |
Apache License 2.0 | MIT License |
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.
zephyr
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Ask HN: Anyone Waiting on BT Auracast?
Hey folks. Anyone out there waiting for BT Auracast? It was announced June 2022, and immediately struck me as must have.
I lost my earbuds, but it seems ridiculous to get a replacement without Auracast, seems like surely if I'm going to make a decent sized purchase like that it needs to support group playing. I want to tune into the radios of other people on the metro or on the bus, want to be able to watch a movie on the plane with someone.
Auracast was announced in June 2022. Anyone else out there struggling with expectations here? I'm really hoping the product announcement season that's right around the corner had a good number of Auracast announcements.
Side note, a ton of it is over my head but it's been so so fun tuning in every once and again to see how Zephyr's Bluetooth Audio work is going. Just wild now much has gone into this! https://github.com/zephyrproject-rtos/zephyr/commits/main/subsys/bluetooth/audio
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VisionFive 2 ROM addresses for Zephyr RTOS
I am working on adding support for VisionFive 2 in Zephyr RTOS. I have created a device tree by referencing the starfive linux, patches of hifive_unmatched FU740 SoC and patches of BeagleV Starlight.
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Adding support for visionfive2 in zephyr rtos
We are unsure on how to proceed further with this error. We have opened a github discussion regarding the same issue.
- Zephyr (small footprint realtime OS) supported boards
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Learning to write device drivers using C/C++ in Zephyr OS
Then there are samples. Look through it for anything useful. RC522 uses SPI, so getting that to work would be a good first step.
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Building with cmake can't find cross-compile objcopy
Hey, I've been trying to build an app with cmake+ninja instead of west to integrate it into a larger build system and everything works correctly except for the final stage where it uses `/usr/bin/llvm-objcopy` instead of the `${CROSS_COMPILE}` one it tries to find here.
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Arduino Joins Zephyr Project
Zephyr has a lot of good points, but I really wish it didn't use Kconfig. Getting a working config seems to be mostly a matter of copying an already working example. It might be okay for hardware side of things, but it's a really bad at software/feature dependency.
Set https://docs.zephyrproject.org/latest/build/kconfig/tips.htm... and the issue: https://github.com/zephyrproject-rtos/zephyr/issues/52575. And don't even get me started on trying anything to group options together.
- Zephyr 3.4 is out!
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PlatformIO and Zephyr is a bad idea
In this thread u/ikravets explained that there hasn't been much demand for Zephyr, which is why they aren't doing anything with it, and in this pull request Zephyr decided to no longer recommend PlatformIO in their documentation.
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Zephyr RTOS RAM Tracing
The answer is always in the source: https://github.com/zephyrproject-rtos/zephyr/blob/bdaac354f4cb0ad91d952c2f6941c16240d84da2/subsys/tracing/tracing_backend_ram.c
FreeRTOS-Kernel
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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?
mbed-os - Arm Mbed OS is a platform operating system designed for the internet of things
RIOT - RIOT - The friendly OS for IoT
nuttx - Apache NuttX is a mature, real-time embedded operating system (RTOS)
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.
wasm-micro-runtime - WebAssembly Micro Runtime (WAMR)
TizenRT - TizenRT is a lightweight RTOS-based platform to support low-end IoT devices
FreeRTOS-rust - Rust crate for FreeRTOS
ODrive - High performance motor control