/usr/share/doc/libusb-dev/html/ref.deviceops.html is in libusb-dev 2:0.1.12-28.
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>II. Device operations</H1
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><P
>This group of functions deal with the device. It allows you to open and close the device as well standard USB operations like setting the configuration, alternate settings, clearing halts and resetting the device. It also provides OS level operations such as claiming and releasing interfaces.</P
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><DT
><A
HREF="function.usbopen.html"
>usb_open</A
> -- Opens a USB device</DT
><DT
><A
HREF="function.usbclose.html"
>usb_close</A
> -- Closes a USB device</DT
><DT
><A
HREF="function.usbsetconfiguration.html"
>usb_set_configuration</A
> -- Sets the active configuration of a device</DT
><DT
><A
HREF="function.usbsetaltinterface.html"
>usb_set_altinterface</A
> -- Sets the active alternate setting of the current interface</DT
><DT
><A
HREF="function.usbresetep.html"
>usb_resetep</A
> -- Resets state for an endpoint</DT
><DT
><A
HREF="function.usbclearhalt.html"
>usb_clear_halt</A
> -- Clears any halt status on an endpoint</DT
><DT
><A
HREF="function.usbreset.html"
>usb_reset</A
> -- Resets a device</DT
><DT
><A
HREF="function.usbclaiminterface.html"
>usb_claim_interface</A
> -- Claim an interface of a device</DT
><DT
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>usb_release_interface</A
> -- Releases a previously claimed interface</DT
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