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用DM816X 测试一段程序时间,有哪些方法?



1.用DM816X 测试一段程序时间,有哪些方法?如果打印系统时间,系统时间如何知道?

2.DM816x/C6A816x / AM389x,这个是一个板子的型号?这个板子上集合了这3类?