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neutroncode
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December 2, 2025
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SuperTinyKernel (STK) - lightweight embedded multi/single-core multithreading

  • December 2, 2025
  • 1 reply
  • 179 views

Hi STM Devs!

I would like to introduce a thread scheduling library - SuperTinyKernel (STK).

Its GitHub repo: https://github.com/dmitrykos/stk

You can check capabilities in detail on GitHub but briefly STK can:

  • Soft and hard real-time support: STK supports cooperative scheduling for “soft real-time” tasks, you can also enable hard real-time mode (KERNEL_HRT) for periodic tasks with guaranteed deadlines.
  • Static and dynamic tasks: Define all tasks at startup (KERNEL_STATIC) or allow tasks to be created and destroyed at runtime (KERNEL_DYNAMIC).
  • Low-power friendliness: STK puts MCU into a low-power mode when there are no runnable tasks (task calls Sleep).
  • Tiny footprint: Minimal C++ abstractions (no STL, no heavy namespaces) keep the kernel small and simple.
  • Portability: Supports ARM Cortex-M and RISC-V RV32 MCUs.
  • Multi-core support: Fully implemented for Cortex-M and RISC-V.
  • x86 development mode: Compile & debug your code on a PC before flashing to the MCU, which helps with early testing and unit tests.
  • Open-source License: MIT: Open for commercial, closed-source, open-source - your choice.

There are ready to use STM32 examples for STM32F051 MCU (STM32F0DISCOVERY dev board), STM32F103 (NUCLEO-F103RB dev board), STM32F407 (STM32F4DISCOVERY dev board): 

https://github.com/dmitrykos/stk/tree/main/build/example/project/eclipse/stm

Any questions? Please ask, also you are welcome to participate in STK's GitHub repository.

      This topic has been closed for replies.
      Best answer by Issamos

      Hello @neutroncode 

      Thank you so much for sharing this repo with the community. Hope that ST Create a dedicated space for user’s contribution on the ST Community. This will help users to find helpful examples or inspiration for new projects.

      Best Regards.

      II

      1 reply

      I
      IssamosAnswer
      Graduate II
      December 2, 2025

      Hello @neutroncode 

      Thank you so much for sharing this repo with the community. Hope that ST Create a dedicated space for user’s contribution on the ST Community. This will help users to find helpful examples or inspiration for new projects.

      Best Regards.

      II

        N
        neutroncodeAuthor
        Explorer
        December 3, 2025

        Hi @Issamos

        Thank you for a warm welcome! 

        STK is probably one of the easiest and fastest ways to add multi-threading to STM32 MCUs for new and existing bare-metal ISR-only projects, it has no board-specific dependencies or portability layers, fits any custom design based on STM32 MCU. Therefore I hope ST Community will find it useful and practical.

        Best regards,

        Dmitry.

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