uCOS-IIv2.86在EFM32系列Cortex M3微处理器上的移植例程，对uCOS-II中的任务切换源码作了修改。在IAR环境下调试成功。-uCOS-IIv2.86 microprocessor in the Cortex M3 EFM32 family routines on the transplantation of uCOS-II in the source code has been modified task switching. Debugging environment