:puzzle:

新手 瞅瞅:pleased:

一调试就会出现汇编窗口，那叫一个郁闷啊！:Cry:

一调试就会出现下面的错误 software interrupt （swi） 0xffffff occured in arm mode this swi is not used for semihosting but caused cpu core to be halted do you want the cpu core to be automatically restarted when this happens?

:Cry: :Cry: