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USB Host High Speed HID_MIN_POOL Can not set to 1

jim_hu
Visitor

I am using an STM32F405RGT6 and USB3300 to implement a USB Host for a keyboard. When I set hid_min_poll to 1, the keyboard is recognized but key presses are not detected. However, when I set hid_min_poll to 2 or higher, the keyboard works fine, and key presses are detected. What could be the reason for this?

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