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KL27Z128/256 USB DFU & Other Question

Question asked by Ellen Lin on Sep 17, 2018
Latest reply on Sep 25, 2018 by Fang Li

Now i am using KL27Z ( FRDM-KL43 EVM )


I have some question as below :


1. We survey USB / DFU Function now , have any AN can teach us how to use this ? Whether i have to download a USB FW then i can use DFU Function ? it's ROM Bootloader device , i don't think i need to download the USB Code first , so we need your help ~ thanks a lot !!


2. We prefer to copy code into RAM , Have any AN show this ? i need full function or Example to use this ~ thanks !!


3. I see the 32 byte Backup register in DS as below , but i haven't see it in RM . And what is this use for ? Have some introduce ? thanks a lot !!