Hi everyone,
I fixed it and I go posting the way I did.
STM CUBE MX auto source look so:
int main(void)
...
MX_USB_HOST_Init();
...
/* USER CODE */
Then VBus will be set in mx_usb_host_init();
I fixed my problem removing the VBus setting form the library, and moving it before in the program.
This way:
int main(void)
...
MY_USB_VBusOn(); // (this is user procedure, not from library)
...
MX_USB_HOST_Init();
...
/* USER CODE */
So all works now, both with usb key plugged at power and plugging it after power on.
I not have a concrete understaning of what happen but I will see further.
Maybe a short timings that crossing vbus and stack frame on strm32 go crashing.
