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Is it ok to include the CMSIS code in a open source project for Cortex M based mcu:s?

Note: This was originally posted on 13th April 2011 at http://forums.arm.com

Hi

After reading the license for the CMSIS I am a little bit confused.

Is it ok to include the CMSIS code in a open source project for Cortex M based mcu:s?
Is it ok if that project is under the GPL license?
Is it ok if that project is under the Apache2.0 license?

Thanks Johan

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Reinhard Keil over 12 years ago

Note: This was originally posted on 22nd April 2013 at http://forums.arm.com

ARM has change licensing of CMSIS in Version 3.20. The software components contained in this folders are under the terms of the BSD License:
(a) ./CMSIS/DSP_Lib - DSP Library sources and examples; ( ./CMSIS/Include - Header files; (c) ./CMSIS/Lib - DSP Library build for various toolchains; (d) ./CMSIS/RTOS - Header file template for CMSIS-RTOS implementation; and (e) ./Device - Template files and implementations for Cortex-M class processors.

If you are using CMSIS Version 3.20 (available for download under www.arm.com/cmsis) and only the portions contained in the above folders (which are essentially the software portions needed in Cortex-M projects) you are fine. The BSD licence is compatible with GPL or Apache licenses and you can therefore include the CMSIS 3.20 software outlined above in open source projects.
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Reinhard Keil over 12 years ago

Note: This was originally posted on 22nd April 2013 at http://forums.arm.com

ARM has change licensing of CMSIS in Version 3.20. The software components contained in this folders are under the terms of the BSD License:
(a) ./CMSIS/DSP_Lib - DSP Library sources and examples; ( ./CMSIS/Include - Header files; (c) ./CMSIS/Lib - DSP Library build for various toolchains; (d) ./CMSIS/RTOS - Header file template for CMSIS-RTOS implementation; and (e) ./Device - Template files and implementations for Cortex-M class processors.

If you are using CMSIS Version 3.20 (available for download under www.arm.com/cmsis) and only the portions contained in the above folders (which are essentially the software portions needed in Cortex-M projects) you are fine. The BSD licence is compatible with GPL or Apache licenses and you can therefore include the CMSIS 3.20 software outlined above in open source projects.
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