nand2mario, 8/2023

This is a compact Verilog-based FPGA core designed to support USB keyboards, mice and gamepads. It is designed mainly for FPGA retro gaming and computing projects. The most significant advantage is its all-in-one design. It does not require a CPU to work. And it is quite small (<300 LUTs, <250 registers and 1 BRAM block).

To use usb_hid_host, simply add usb_hid_host.v, usb_hid_host_rom.v and usb_hid_host_rom.hex to your project. The module interface in usb_hid_host.v should be sufficiently documented to get you started.

Please refer to usb_hid_host.md for a more comprehensive introduction to the design of the core.

There is currently a sample project that works on Sipeed Tang Nano 20K. Just open usb_hid_proj.gprj in Gowin IDE. Connect your USB devices and expect something like the following.

• Support more boards (icesugar pro, arty a7/s7...)
• More than one device on a port (USB hubs).
• Full-speed devices.
• Testing more types of devices.

• Based on hi631's work supporting USB gamepad on Tang Nano 9K.