Re: how can host disconnect a device without unplug

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On Wed, 15 Jun 2011, Amit Nagal wrote:

> >> 1) In one of my embedded targets , host and device are hardwired over usb .
> >> so i want to have programtic equivalent of unplug/plug cycle in usb
> >> host  to check connect / disconnect
> >> functionality and without using rmmod usb modules on host side . Also
> >> i donot have control over gadget side .
> >
> > You could turn off power to the host.  That would have pretty much the
> > effect you want.  But there's no other way to do it.
> >
> 
> turn off power to the host ? sorry i didn't get it . is it meant to be
> "turn off power to the device" ?

No, I meant "turn off power to the host".  Like, disconnect the host 
computer from its power source (and remove its batteries).

Alan Stern

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