File: Version 2.1 of the Cortex Microcontroller Software Interface Standard (CMSIS)
Version 2.1 of CMSIS is a maintenance release of the vendor-independent hardware abstraction layer.
It adds the following features to the CMSIS-DSP library:
Cortex-M0 support,
little endian support,
support for Cortex-M4 based devices without FPU
Updates to the directory structure:
all device independent CMSIS header files are located in a single directory (CMSIS\Include),
all device dependent files supplied by Silicon Vendors are located in the newly introduced Device folder (Device\<Vendor>\<Series>\...) in parallel to the CMSIS folder,
tool-chain specific sub-folders (GCC, ARM, IAR) for libraries, assembler and project files
More information can be found in the documentation of the download.
Open the index.html file in the CMSIS directory to access the version history and all other CMSIS documents.