我打開我的例程，然后編譯，卻顯示這樣
*** Please review the installed ARM Compiler Versions:
'Manage Project Items - Folders/Extensions' to manage ARM Compiler Versions.
'Options for Target - Target' to select an ARM Compiler Version for the target.
*** Rebuild aborted
然后按照網上的要求，換了個編譯器.就是keil5那個魔法棒里targe里的ARM compiler 換到了第二個，結果例程居然都出現錯誤。害
![KNDYKQB6ZC}M6N]G]SX51hei]R.png](http://c.51hei.com/d/forum/202007/22/140640xwo54w1o9ew4v82l.png "KNDYKQB6ZC}M6N]G]SX51hei]R.png")
