What is CMSIS-DSP?

The CMSIS-DSP software library is an open-source suite of common compute processing functions optimized for Arm Cortex-A and Cortex-M processors.

The source code is available in this GitHub repository .

The library is easiest to use with Development tool IDEs such as Keil MDK and Arm Development Studio.

The library can be installed as a CMSIS-Pack .

A number of example projects are also provided.

Development Tools

Arm Keil MDK will be used for this learning path. You can use Keil Studio Visual Studio Code Extensions or (legacy) Keil μVision IDE.

See the below install guides for set up instructions:

• Keil Studio VS Code Extensions
• Keil μVision

Install the appropriate IDE you wish to use.

Using the CMSIS-DSP library

To make any function from the CMSIS-DSP library available to your code, simply include the arm_math.h header file in any relevant source:

    

        
        
            #include "arm_math.h"
        
    

This file resides in the Include folder of the library installation.

The Dot Product example used makes use of two functions from the library:

• arm_mult_f32()
• arm_add_f32()

The appropriate implementation is selected at build time based on the processor.

For more information refer to the CMSIS-DSP library documentation .