Re: OT: usb hub power switching (Re: Recent librtlsdr and example program don't work) - osmocom-sdr

9 May 2012

Hello Peter,

On Tue, 8 May 2012 23:47:33 +0200, "Peter Stuge" &lt;peter(a)stuge.se&gt; wrote:
...

 Yes, I haven't seen it available in any userspace API on any system. :\

 It may be possible to send the request to the hub from userspace, but
 I haven't tried it. 
Older Windows Version (before Vista) had IOCTL_USB_HUB_CYCLE_PORT
to perform a power cycle. I think there is still a way in newer
version too, If I am not wrong the WHQL driver testings tools
do perform USB power cycles frequently when testing USB devices.

Of course the above is only relevant if you care about Windows ;-)

Best regards,
  Dieter
-- 
Dieter Spaar, Germany                           spaar(a)mirider.augusta.de