Board/MCU suggestion for USB Dual Role

[braxlan]

Hello,

for the purpose of USB HID processing, I am searching for a board or MCU with two USB ports, one port should run in device mode, the other one in host mode. It should be supported well by TinyUSB, especially on the port running in host mode, because it should be able to work with hubs (up to five levels ideally).

I know there is the Supported Boards list in the docs, but it does not contain the current state of implementation.

Right now I am using two Raspberry Pi Picos connected via UART, one running in device mode, the other one running in host mode as done in the hid-remapper project. This works well, I got it to run with four hub levels on the host side (maybe five would work too, I need to find another hub to verify). But I wonder if there is a simpler solution.

What I've found so far:

• Two Raspberry Pi Picos (see above)
• RP2040 + MAX3421E (only one hub level supported on the MAX3421E, see this discussion)
• RP2040 + Pico-PIO-USB, only one hub level with PIO as host with selected hubs, device mode seems to be currently broken
• CH32V203 (very early host support, not even merged as of now)
• Teensy 4.x (EP1 not available on device side because of hardware restrictions, show stopper for me regarding compatibility)

Does anyone know a good fit for my project, ideally in a price range near to the Raspberry Pi Pico and from the list of supported boards?

Thank you and best regards

[hathach]

pico using nantive usb as device and pio-usb as host work rather well

[braxlan]

Thank you for your suggestion. But as I wrote, PIO-USB hub support is quite limited and mostly broken in recent versions (since version 6.0)