Enable DFU functionality in the FFD example design

[DunkWu]

Hi Sir,

I am using the XK-VOICE-L71 DevKit and would like to add a USB device to implement DFU functionality in the Far-Field Voice Local Command (FFD) example design.
I have the following two questions:

1. When using the FFD example design source code and adding a USB device to implement DFU functionality, are there any code size (external flash) limitations or other constraints?

2. For adding a USB device to implement DFU functionality, which example design source code or design documentation can I refer to?

Thank you!

[andrewxcav]

1. The Far Field Voice Assistant demo is based on the same SDK and voice libraries as FFD and has USB, so that might be a good example to follow: https://www.xmos.com/documentation/XM-0 ... onstration
2. Here is some info on the DFU side: https://www.xmos.com/documentation/XM-0 ... cation-dfu