打開一個以前編譯正常的項目（用IAR5.5建立的），編譯時提示如下錯誤（現在用的IAR6.3）：
Error[Pe147]: declaration is incompatible with "__interwork
__softfp unsigned long __get_PSP(void)" (declared at line 52 of "C:\Program Files\IAR
C:\Libraries\CMSIS\CM3\CoreSupport\core_cm3.h
1.Check the "Use CMSIS" option from
Project options > General Options > Library Configuration -> Use CMSIS option
2.Remove all CMSIS header files from your project by removing:
“$PROJ_DIR$\..\..\..\Libraries\CMSIS\CM3\CoreSupport” from [Project>Options>C/C++ Compiler>Preprocessor]