Hi,
You can use LPCOpen for the LPC1769 board, LPCOpen is an extensive collection of free software libraries (drivers and middleware) and example programs that enable developers to create multifunctional products based on LPC microcontrollers. Access to LPCOpen is free to all LPC developers.
You can download it from the next link:
LPCOpen Software for LPC17XX|NXP
After download it, you will find some USB examples.
Have a great day,
Sol
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