DownloadFree, extremely simple, amazingly tiny and very fast real-time operating system (RTOS) designed for deeply embedded applications.
Target: ARM Cortex-M, STM8.
It was inspired by the concept of a state machine. Procedure executed by the task (task state) doesn't have to be noreturn-type. It will be executed into an infinite loop. There's a dedicated function for immediate change the task state.
Features
- kernel can operate in preemptive or cooperative mode
- kernel can operate with 16, 32 or 64-bit timer counter
- kernel can operate in tick-less mode
- implemented basic protection using MPU (use nullptr, stack overflow)
- spin locks
- once flags
- events
- signals with protection mask
- flags (any, all, protect, ignore)
- barriers
- semaphores (binary, limited, counting)
- mutexes with configurable type, protocol and robustness
- fast mutexes (error checking)
- condition variables
- read/write locks
- memory pools
- stream buffers
- message buffers
- mailbox queues
- event queues
- job queues
- timers (one-shot, periodic)
- cmsis-rtos api
- cmsis-rtos2 api
- nasa-osal support
- advanced c++ wrapper
- all documentation is contained within the source files
- examples and templates are in separate repositories (https://github.com/stateos)
Project Samples
License
MIT LicenseFollow StateOS
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