https://github.com/trygvis/javax-usb-libusb1
You may find something here. I am not sure how up to date it is.
On 03/29/2012 12:47 AM, Hardik Shah wrote:
Hi,
I am working on a code which requires communication of java code with
usb device. For that I am using javax.usb api
I was successfully able to send vendor specific commands that control
the usbDevice. Please find below snippet of code
byte bmRequestType = UsbConst.REQUESTTYPE_DIRECTION_OUT |
UsbConst.REQUESTTYPE_TYPE_CLASS |
UsbConst.REQUESTTYPE_RECIPIENT_INTERFACE;
byte bRequest = 0x09;
short wValue = 0x0300
short wIndex = 0;
byte[] buffer = {};// propertiary
command to be send to usbDevice
UsbControlIrp usbControlIrp =
usbDevice.createUsbControlIrp(bmRequestType, bRequest, wValue, wIndex);
usbControlIrp.setData(buffer);
usbDevice.syncSubmit(usbControlIrp);
However I come across a situation where I need to get some information
back from usbDevice (i.e. I will send some command and device will
return the some specific information). In other words, I need to
write some command to the device and read response for the same. How
can I achieve this..?. A code snippet or working example will be
helpful.
Please find endpoint information
if (t == UsbConst.ENDPOINT_TYPE_INTERRUPT &&
ep.getDirection() == UsbConst.ENDPOINT_DIRECTION_IN
&& ep.getUsbEndpointDescriptor().bEndpointAddress() ==
SCHOMAKER_ENDPOINT_ADDR ) {
endptIn = ep;
System.out.println("DEBUG AbstractCardReader endpoint is selected " );
foundEp = true;
break;
Thanks
Shah
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