Many official and on-line to see USOS Cortex-M3 core-based migration, the task runs in the privileged class, and did not give full play to Cortex-M3 user-level and privilege level of protection, user-level migration of this document is a separate and privileged class the user task program completely run in user level, users need to operate under the interruption level special requirements, call the function in SVC 系统 of Real, They can also add your own in the SVC system calls.

ucos2.88基于SVC系统中断的STM32移植\os_cpu.h
..................................\os_cpu_a.s
..................................\os_cpu_c.c
..................................\先看移植说明.txt
ucos2.88基于SVC系统中断的STM32移植

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