新买了一块stm32f103的板子，打算用IAR新建一个工程，设备选择，文件添加，include目录都加了，但还是报错，大概意思是说“core_cm3.h”里的几个变量和IAR安装目录下的标准头文件里有重定义的现象
{Error[Pe147]: declaration is incompatible with "__interwork __softfp unsigned long __STREXH(unsigned short, unsigned short *)" (declared at line 186 of "C:\Program Files (x86)\IAR Systems\Embedded Workbench 6.0\arm\inc\c\ D:\workspace\stm32_IAR\libraries\CMSIS\CM3\CoreSupport\core_cm3.h 1186
}
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