Why do I dont get interrupt when I try to enumerate a USB Hub operating on low speed ? Also the stm detects the connection sometimes and not other times . What could cause this to happen ?

[sunny123]

Hello folks

This is my first time working on ST processor and USB and need some help I am using STM32F407VG Processor in the host only mode and standard peripheral library

I am not using SOF and using HSE as an input to the PLL operating at 168 MHz I enable the USB clock as well Is there anything special I need to do for LS mode

Hub used is USB2512aezg

Thank you in advance

[Pavel A.]

There were rumors that STM32F4 does not support hubs, especially in low speed mode.

No official errata from ST, though.

-- pa

[sunny123]

hmm Thank you Pavel