Teensy 4.1 USBHost_t36.h hang when using HUB to usb Host for multiple midi device control

[PAOLO157]

Hello gentlemen,
I' apologize for my english,
My name is PAOLO (italian) and I am new to this forum and a novice to your USBHost_t36.h library.
I developed a midi board using a Teensy 4.1 and it works very well with 4 UART based midi inputs/outputs and also when I connect a midi keyboard to the USB HOST (second USB) and finally when I connect the Teensy to the PC (win10) to use DAW and VST. Every things sound great !
BUT, when I try to use a (2.0) or (3.0) HUB the program stops after the .begin() statement if a device is already connected to the HUB.
In any case when I try to connect even a single device to the HUB after .begin has been successfully terminated, Teesny seems to stop working and needs to be restarted.
Do you have any suggestions?
Many thanks in advance.

[doctea]

Hi, I would say to post your code. I have two USB hubs and several USB MIDI devices connected to my Teensy project. I do sometimes get crashes when connecting devices, but not every time, so maybe there is something in your code causing this.