Don't work USB_Test program about esp32-usb-soft-host

[tobozo]

Hello @yamachan-hacomono,

thanks for your feedback 👍

Can you please specify the exact keyboard model along with more info on the VCC/GND wiring for this USB port?

⚠️ The keyboard has to be USB Low Speed otherwise it won't be detected by this library, which eliminates most wireless dongles and keyboards/mice for gamers.

[yamachan-hacomono]

@tobozo
thank you for your reply!

VCC / GND is obtained from a regulated power supply and has a sufficient supply amount.
The connected device is a general USB keyboard. Maybe it's doing fast processing and you don't recognize it. The keyboard is Realforce 91UBK-S.

[tobozo]

VCC / GND is obtained from a regulated power supply

is GND shared between the ESP and the keyboard as it should?

Realforce 91UBK-S. Price | $200+

that's bad news, given the average price of that device it's probably a USB High Speed device.

one way to verify this is to plug said keyboard to a linux system while running tail -f /var/log/syslog and look for the device detection message: if it doesn't mention low-speed USB device then it's not compatible.