Restart USB device?

[baggins]

Hi,

On a LM4 I have an Arduino connected to the USB bus. The Arduino gets its power from the USB bus and acts as a serial device.

Every now and then, the Arduino gets stuck (for reasons that I have not figured out yet) and sends no more data to the LM.

I have two options then:

1. unplug the Arduino from the USB bus and plug it back in, which restarts it
   
2. reboot LM which has the same effect
   

I now have a scheduled script which checks every 5 minutes if the Arduino data get updated. If not, an Alert is sent and I then usually reboot the LM remotely.

I could change this script to reboot LM automatically but I wonder if there is a less intrusive way to restart the Arduino by manipulating the USB bus.

Thanks for your help.