I downloaded the SDK with USB stack. there are all kinds of USB device samples but DFU class in the usb_examples folder, where and how can i get the dfu sample code? thank you!

[stoneshi]

all code was generated on https://mcuxpresso.nxp.com/en/dashboard ,  why is there no dfu code?

[danielchen]

Hi Stone:

Here is an  application note (AN4370) describes USB DFU Bootloader for MCUs. Please refer to below link. But it is based on old usb stack.

https://www.nxp.com/docs/en/application-note/AN4370.pdf?fsrch=1&sr=3&pageNum=1 

Regards

Daniel

[stoneshi]

Daniel,

thank you, does it means there really no the DFU reference code based on the latest SDK 4.1.1, so I have to do the DFU based on old stack?

Best Regards

Stone