Hello Xiangjun Rong,
Thank you very much for your answer. Indeed the board is not recognized. I have the TWR-K53N512. Apparently, there is no board file for K53, it's only FlashK60Xxxx.
Now, I'm realizing that in the "readme" file it says that is compatible with Freescale TWR-K40/K60 board. What about K53??
In the application note says that the glucometer is compatible with K53 board...
I appreciate your help.
Regards!