出錯是因為你當前運行的文件調用到了core_cm3.h，而core_cm3.h文件中包含了有IRQn_Type類型名，但是此類型名是在“stm32f10x.h”中定義的，所以你需要在當前文件包含#include "core_cm3.h"之前先包含#include "stm32f10x.h"
記住，兩個頭文件如果順序錯誤也會報錯
#include "stm32f10x.h" #include "core_cm3.h"
"IRQn_Type" is undefined
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