Please refer to this thread Add CDC device to UVC . The attached firmware is for CX3. You need to make similar changes to the FX3 firmware and follow the steps after programming the firmware to fx3
The changes for adding CDC device are done:
- Adding the descriptors in .dscr file
- Created a thread for CDC application
- Handling of CDC class requests
- Creating DMA channel for transfers UART to USB
Please let me know if you have some problem
thank you so much!