Hi,
I am working with the Windows implementation in combination with LibUsb.
Connecting to the root hub and
discovering devices workes well. But when I try to communicate with devices
I have to retrieve the
active configuration to access the interfaces of a device. But no one of
the devices I tested gives me an
active configuration:
UsbConfiguration active = device.getActiveUsbConfiguration();
always retuns null and:
if(device.isConfigured()) {
...
}
fails!
In the file FindUsbInterface.java I found a comment saying:
/* If the UsbDevice is not configured, there is not much we can do with it.
* We could examine all its fields/properties, but the only communication
* possible is a limited set of Requests on the Default Control Pipe.
* So for this example we'll ignore unconfigured devices.
* The OS USB stack normally configures all devices, so we shouldn't run
into any
* unconfigured devices.
*/
Why does my OS USB stack not configure my devices??? How could I force this
configuration, or what am I doing wrong?
Regards,
Markus
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