F28379D error #10234-D: unresolved symbols remain error #10010: errors encountered during linking; "epwm_updown_aq_cpu01.out" not built

how to solve this problem.I have read many articles about this error on the Internet, but my problem is still not solved.

I would like to ask how to solve this problem. Thanks.

Green Deng：

应该是没有添加库函数。你看一下undefined symbol下的那几个函数是哪个库里的，确认已经把相应的库加到工程里来了。
另外，你的工程是从低版本的CCS移植到高版本的CCS上的吗？