FreeRTOS can provide support for threads or tasks, coroutines, mutexes, semaphores, and software timers. There is a tick-less mode designed for compact, low-power applications.

[Michael Becker] has been using FreeRTOS for about seven years. He decided to start adding some features and has a very interesting C++ class wrapper for the OS available. Real Time Operating Syste… ...

For FreeRTOS one would still have to use another framework to use hardware peripherals, whether this would be CMSIS, ST’s HAL or something else, and this decreases portability.

“The availability of FreeRTOS enables customers to rapidly build applications on a well-established and feature-rich open-source environment,” said Patrick Will, head of Software Product Management ...