Hello everybody,
I am using Debian and javaxUsb. I have configured the system with the
libJavaxUsb library as the following:
- copy jsr80.jar to $JAVA_HOME/jre/lib/ext
- copy jsr80_linux.jar to $JAVA_HOME/jre/lib/ext
- copy jsr80_ri.jar to $JAVA_HOME/jre/lib/ext
- copy libJavaxUsb.so to $JAVA_HOME/jre/lib/i386
- copy javax.usb.properties to $JAVA_HOME/jre/lib
I used the tilt capter. I have changed the mode of
/proc/bus/usb/003/009 (equivalent with the capter) to 777. I used some
code below:
UsbServices services = null;
UsbHub virtualRootUsbHub = null;
try {
services = UsbHostManager.getUsbServices();
virtualRootUsbHub = services.getRootUsbHub();
System.out.println(virtualRootUsbHub.getUsbDeviceDescriptor().toString());
} catch (UsbException uE) {
throw new RuntimeException("Error : " + uE.getMessage());
} catch (SecurityException sE) {
throw new RuntimeException("Error : " + sE.getMessage());
}
to output the information of device. But I received something below:
bLength : 18
bDescriptorType : 0x01
bcdUSB : 0101
bDeviceClass : 0x09
bDeviceSubClass : 0x00
bDeviceProtocol : 0x00
bMaxPacketSize0 : 8
idVendor : 0xffff
idProduct : 0xffff
bcdDevice : 0000
iManufacturer : 1
iProduct : 2
iSerialNumber : 3
bNumConfigurations : 1
I saw that the printed message is always this when there is a capter or
not. I don't understand for my configuration or the others. Could anyone
help me this?
Thanks in advance,
Kinh
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