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CMSIS Version 4 (legacy repository)

This is not the current version of CMSIS and just provided to allow access to the legacy CMSIS Version 4. Raised any issues on https://github.com/ARM-software/CMSIS_5/issues

IMPORTANT:

CMSIS Version 5 is available via https://github.com/ARM-software/CMSIS_5

Cortex Microcontroller Software Interface Standard. Refer to www.arm.com/cmsis for more information.

This GIT repository contains the CMSIS Version 4 release images starting from V4.3.0. Note that CMSIS Version 5 is available via https://github.com/ARM-software/CMSIS_5.

Issues is the location to provide feedback and report problems for the older CMSIS Version 4. CMSIS Version 5 is developed on https://github.com/ARM-software/CMSIS_5 and suggestions for future revisions or feedback specific to that version should be provided there.

Releases provides access to the generated software packs. These packs are also available via Download Specifications on www.arm.com/cmsis

License the CMSIS components (CORE, RTOS, DSP, Driver) that are intended to run on the Cortex-M device are today licensed under BSD or zlib license. The detailed license agreement for CMSIS can be found here: https://github.com/ARM-software/CMSIS/blob/master/CMSIS/CMSIS_END_USER_LICENCE_AGREEMENT.pdf (refer to Separate Files)

Access to CMSIS Development

We are pleased to see so much valueable feedback about the various CMSIS components. For the upcoming CMSIS version 5 we have changed our approach and make also the development available under https://github.com/ARM-software/CMSIS_5. To accept contributions to the source we did also change the license to Apache 2.0.

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