Summary

In this chapter, we explored CMSIS, a critical framework for Cortex-M and some Cortex-A processors. This chapter gave us the foundational knowledge to enhance code portability and efficiency in our Arm Cortex-M projects.

We began by learning how to define hardware registers using C structures, a fundamental technique for improving code readability and maintainability. This knowledge allowed us to understand how the CMSIS-compliant header files provided by microcontroller manufacturers give us access to the register definitions.

Next, we explored CMSIS itself, discussing its components and how it facilitates efficient software development. We examined the key benefits of CMSIS, such as standardization, portability, and efficiency, and introduced its main components, including CMSIS-Core, CMSIS-Driver, CMSIS-DSP, CMSIS-NN, CMSIS-RTOS, CMSIS-Pack, and CMSIS-SVD.

We then moved on to setting up the necessary CMSIS files from our silicon manufacturer. This process involved...