IAR升级之后，打开stm32官方例程，编译时提示如下错误：
Error[Pe147]: declaration is incompatible with "__nounwind __interwork __softfp unsigned short __LDREXH(unsigned short const E:\My doc\STM32F10x标准库v3.5.0\STM32F10x_StdPeriph_Lib_V3.5.0\Libraries\CMSIS\CM3\CoreSupport\core_cm3.h 1154
Error[Pe147]: declaration is incompatible with "__nounwind __interwork __softfp unsigned short __LDREXH(unsigned short const E:\My doc\03 - 专题\STM32F10x标准库v3.5.0\STM32F10x_StdPeriph_Lib_V3.5.0\Libraries\CMSIS\CM3\CoreSupport\core_cm3.h 1154
解决办法：
1，在Project -> Options -> C/C++ Compiler-> Preprocessor -> Additional include directories 头文件路径里面，把包含core_cm3.h的路径删除。
2，在Project -> Options -> General Options -> Library Configuration -> Use CMSIS，右下角的选项中选择 use CMSIS