So I have made a custom ATmega32u4 board with onboard USB hub using FE1.1s IC. Now the hub part works flawless, but every time I connect it I get a message on windows saying "unknown USB device (descriptor request failed)" and it doesn't show up in Arduino IDE. I have flashed a Arduino Leonardo bootloader using an Arduino Uno as ISP. Any Idea why it fails to communicate via USB?
The files are here.
Micro_Rev1j.pdf (25.1 KB)
Evidently the USB thing isn't working as expected. Not an Arduino problem.
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By the way, the ATmega32U4 supports USB directly, all by its tiny little self!
I know it supports USB, but I want to have a passthrough so that I don't lose the free USB port when using my board. If you look at the schematic of what I did, I used the FE1.1s as USB Splitter / hub and than just connected one of the USB outputs directly to the ATmega32u4 USB inputs. The other outputs of the FE1.1s USB hub IC work, so there is a problem with the ATmega mc and not with the USB hub part
So the problem is the ATmega32u4 doesn't communicate correctly with my PC via USB
Might be a good idea to post a schematic so the forum can see it directly.
done
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