This folder is a placeholder for the CMSIS source code installation. CMSIS is available from ARM on the ARM web site
CMSIS comes as a ZIP file, the version this code base is validated and tested with is v4.3 (CMSIS-SP-00300-r4p3-00rel0.zip) Extract the contents of the zip file into the same directory as this readme.md file. The build system will look for the CMSIS support files here.