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cache tune tool



 I want learn to tune my routine with cachetune tool.

       So I download a guidance which contain a project and a PDF file  from the TI web.

So I do following the guidance ,and it work well.In the project ,there isn't a tcf configuration.

       But now i want to tune a project with tcf for dm64x+.Every time when I  open the cachetune  User interface after download program and run,I can't see any data infomation.

So I think it is because IDLE task  is running .And this isn't  time to collect some cache infomation. Is that right? And how I can do to tune my routine with a tcf file.