CMSIS, STM lib. and OS

hospodar · ‎2015-08-12

Posted on August 12, 2015 at 13:22

I have made some program using STM standard peripheral libraries (which uses CMSIS?). I do not use any OS now. I read that CMSIS support RTX and Keil ARM-MDK contains RTOS. I have some elementary questions.

1. What means that CMSIS have support for RTX? Is there already OS included in CMSIS source files? If no what I will need to implement it?

2. Is Keil RTOS different from CMSIS RTX? In which way?

3. Is this OS free for non-comercial usage?

4. What even mean CMSIS, why manufacturer like STM has own libraries? Is it possible to create program using CMSIS only, without STM lib?

5. Can I use STM lib. with OS?

I planning to extend my program in future, so I will need some OS. Which particular OS you can recomend to me? It have to be free, with ability to implement GUI and work with Keil MDK. Device is Cortex-M3.

Thank you.

Nesrine M_O · ‎2015-08-14

Posted on August 14, 2015 at 12:23

Hi hospodar.ivan,

You can refer to the

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00105262.pdf?s_searchtype=keyword

to have more idea about developing applications on STM32Cube with RTOS.

For questions about CMSIS, links bellow are very useful, so take a look on:

http://www.keil.com/pack/doc/CMSIS/General/html/index.html

&

http://www.arm.com/products/tools/software-tools/mdk-arm/middleware-libraries/rtx-real-time-operating-system.php

-Syrine-