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.

[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… ...

“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 ...