Wrong USB Polling Rate

[jun-qu]

Operating System

Windows 10

Board

STM32F427VIT6 demo board

Firmware

tinyusb_min_struct.zip
we pulled the code from your master branch on Apr 4, 2025.

What happened ?

Tested plaftform:
STM32F427VIT6，USB-FS(PA11/PA12), FS Mode, Host
HUB IC: CH334P
Mouse: Logitech G502(set to 1000hz and 500hz)

issue 1:
tested board: STM32F427VIT6 -> CH334P(USB HUB) -> HID MOUSE(1000hz)

What happened:
polling rate can not be kept at 1000hz according to the reported polling rate in the description of a HID mouse

Suspected Cause:
USB HUB IN transter in B channel will interrupt mouse IN transfer in A channel.

issue 2:
tested board: STM32F427VIT6 -> CH334P(USB HUB) -> HID MOUSE(500hz)

What happened:
when IN transfer get some data from the mouse, not NAK.
polling rate can not be kept at 500hz according to the reported polling rate in the description of a HID mouse

Suspected Cause:
This function: tuh_hid_receive_report(dev_addr, instance) is called instantly in this function tuh_hid_report_received_cb(),
we think this kind of usage will bring the issue.

How to reproduce ?

Issue 1: How to reproduce:
connect peripherals as listed here:
STM32F427VIT6 -> CH334P(USB HUB) -> HID MOUSE(1000hz)
you can find the issue on USB with a USB analyzer

Issue 2: How to reproduce:
connect peripherals as listed here:
STM32F427VIT6 -> CH334P(USB HUB) -> HID MOUSE(500hz)
you can find the issue on USB with a USB analyzer

Debug Log as txt file (LOG/CFG_TUSB_DEBUG=2)

no log in need

Screenshots

Issue 1: screenshot

issue 2: screenshot

I have checked existing issues, dicussion and documentation

• I confirm I have checked existing issues, dicussion and documentation.