I guess some examples would be a great idea, and beginning with a mouse seems to be
relevant :
a simple device with which the basic mechanisms of javax.usb can be explained. Perfect
!
Concerning the HID driver, this is not a problem. When installing the usb package on
my computer,
it prevented me from claiming the interface. Here is how I solved the issue :
. actually, the real problem is the "hotplug" package : as soon as a device is
connected, this package
calls the HID driver that grabs the interface, forbidding its access to the java user.
. as a consequence, I simply uninstalled hotplug : "rpm -e hotplug" on my rpm-based
system
I guess a better solution would be to deactivate "hotplug" when launching the java
program by passing
the appropriate command to the system using the Runtime class,
Runtime.exec("deactivating hotplusg package"),
and reactivate it when exiting the virtual machine. However, I didn't find the shell
commands
that enable to do that. Any idea ? Anyway, uninstalling "hotplug" is acceptable if you
do not normally
use USB devices with Linux.
Hope that can help.
Aurelien
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