Introduction - If you have any usage issues, please Google them yourself
The kernel is the STM32 ARM CORTEX-M3, this core_cm3.h contains some kernel-related functions and macros, such as nuclear register definition, part of the nucleus peripherals address, etc., which corresponds core_cm3.c file. Beginners can take care of him as long as it is included into the project on the line, some of the functions here are very bottom of the function, the upper directly call them. If you are interested in higher CORTEX-M3 core or foundation, would like to learn more about these functions, you can carefully study. .