USB DFU reference code for LPC55Sxx

[mditto1]

I see there is a DFU USB device library in MCUXpresso, which I could use to add a DFU function to my device.  But I think I need to divide the flash into a DFU partition that can be executed while I'm re-flashing the main application partition, and redirect the vector table, etc.  Is there reference code for USB DFU for self-flashing on LPC55Sxx?

[Alice_Yang]

Hello Mike,

-There isn't USB DFU demo under LPC55sxx. There is usb_device_dfu demo under MCUXpresso SDK for LPC54608,

you can have a look.

-And if you just want to update image, you can also make your chip enter into ISP mode, then can through USB , UART or other interface to program, about detail please refer to UM:

-There is a second bootloader , you can have a look, it for lpc55s69.

https://www.nxp.com/docs/en/application-note/AN12327.pdf   

Have a great day,
TIC

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