tinyos-rtos

https://github.com/cmc-labo/tinyos-rtos/blob/2a47496047fdb45... This codebase is essentially a stage prop, it has never been compiled nor executed.

The README mentions ARMv7-M, RISC-V, and AVR, but no actual SoCs or boards, and the source code contains unconditional inline assembly for Arm. Similarly, there are measurements of context switch time on RISC-V, while the scheduler is one big stub that doesn't even enter a task, only returns from itself using Arm-specific assembly [0]. The examples rely on this scheduler never returning, so there's no way any of them can run [1]. The bootloader is also a stub [2]. Not a single exception vector table, but plenty of LLM-style comments explaining every single line. Others (well, two people really) have also noted the lack of a linker script, start-up code, and that the project doesn't even build. 82 points at the time of writing, which is 4 hours from the post's submission. Already on the main page. The only previous activity of the author?

https://github.com/cmc-labo/tinyos-rtos/blob/2a47496047fdb45... "Context switch (to be implemented in assembly for target architecture)" There's no asm in the repo so I can only assume this is not something that actually compiles and runs. Other things that are missing: - No startup code (stack setup etc.) - No linker script ("to be created", per makefile comment)

Hi HN, I’ve been working on a tiny RTOS as a personal project to better understand how operating systems and schedulers work internally. This project includes: - Basic task scheduler - Context switching - Simple memory management - Runs on (your target hardware or environment) Motivation: I wanted to learn OS internals by building everything from scratch rather than relying on existing frameworks. Challenges: - Implementing context switching correctly - Designing a minimal but usable scheduler - Keeping the codebase simple and readable I’d really appreciate feedback, especially on: - Architecture design - Scheduler implementation - Code structure GitHub: https://github.com/cmc-labo/tinyos-rtos