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pcametek's avatar
pcametek
Copper Contributor
Apr 19, 2024
Solved

Azure USBX hub issues with full speed devices

We have a project using Azure USBX with a STM32H7 processor and a Microchip 2514 USB HUB.

 

The STM hcd driver is initialized and the software initializes UsbX support for a hub, multiple CDC ACMs, a HID Keyboard and MSC devices. All the devices can be discovered and work as expected. 

 

There is an issue when a FULL SPEED device (CDC ACM and HID Keyboard) is unplugged and then plugged back in again causes the USB bus to become unresponsive. The only current solution is to reset the USB2514 Hub.

 

Has anybody seen this or have any suggestions?

  • pcametek's avatar
    pcametek
    Apr 25, 2024

    pcametek The issue has been solved, a newer version of ST's HCD driver resolved the plug and unplug issue, usbx_stm32_host_controllers.

     

     

1 Reply

  • pcametek's avatar
    pcametek
    Copper Contributor
    Apr 25, 2024

    pcametek The issue has been solved, a newer version of ST's HCD driver resolved the plug and unplug issue, usbx_stm32_host_controllers.

     

     

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