The device communicates with packets of 64 bytes. It's weird beacause
I can read data from it but I can't send data to it.
Quoting Dan Streetman <[EMAIL PROTECTED]>:
> Are you sure you want to send 62 zeros? Is that what the device's spec says?
>
> On Thu, Jul 17, 2008 at 12:10 PM, Marion Decrouez
> <[EMAIL PROTECTED]> wrote:
>> I'm trying to send a packet of 64 bytes, the first one (or the second) equal
>> to 0x30 and the others equals to 0.
>>
>> Dan Streetman a écrit :
>>>
>>> What data (specific bytes) are you intending to send?
>>>
>>> On Wed, Jul 9, 2008 at 4:14 AM, Marion Decrouez
>>> <[EMAIL PROTECTED]> wrote:
>>>
>>>>
>>>> Hello,
>>>> I'm still trying to send data to a HID device but it doesn't work. I
>>>> don't have any errors or exceptions but the syncSubmit method never
>>>> ends and if I use the asynchSubmit method, the actual lentgh is always
>>>> null. I'm sure it's possible to send data to the device because
>>>> there's a software given with the device which does that. I've checked
>>>> the packets sent by this software to the device with an usb monitor
>>>> and I tried to send the same.
>>>> Does anyone knows the problem?
>>>>
>>>> Thanks.
>>>>
>>>> Here is my code :
>>>>
>>>> public static void main(String argv[]){
>>>> try{
>>>> UsbServices services =
>>>> UsbHostManager.getUsbServices();
>>>> UsbHub virtualRootUsbHub =
>>>> services.getRootUsbHub();
>>>> List LL_DevList =
>>>> getUsbDevicesWithId(virtualRootUsbHub,
>>>> (short)0x4242, (short)0xee01);
>>>> UsbDevice LCl_Device =
>>>> (UsbDevice)LL_DevList.get(0);
>>>>
>>>> UsbInterface LCl_UsbInterface =
>>>> LCl_Device.getActiveUsbConfiguration().getUsbInterface((byte)0);
>>>>
>>>> UsbInterfacePolicy LCl_uiP = new
>>>> UsbInterfacePolicy()
>>>> {
>>>> public boolean forceClaim (UsbInterface
>>>> LCl_Interface)
>>>> {
>>>> return true;
>>>> }
>>>> };
>>>>
>>>>
>>>> try
>>>> {
>>>> LCl_UsbInterface.claim(LCl_uiP);
>>>> }catch(UsbException LCl_Exception){
>>>> System.out.println("Could not claim
>>>> interface to drive majook : "+
>>>> LCl_Exception.getMessage());
>>>> }
>>>>
>>>>
>>>>
>>>> UsbInterface LCl_UsbActiveInterface =
>>>> LCl_UsbInterface.getActiveSetting();
>>>>
>>>> byte LN_EndpointOutAdress = (byte)0x04;
>>>> UsbEndpoint LCl_UsbEndpointOut =
>>>> LCl_UsbActiveInterface.getUsbEndpoint(LN_EndpointOutAdress);
>>>>
>>>> UsbPipe LCl_UsbPipeOut =
>>>> LCl_UsbEndpointOut.getUsbPipe();
>>>>
>>>> try
>>>> {
>>>> LCl_UsbPipeOut.open();
>>>> }catch (UsbException e){
>>>> System.out.println("Could not open
>>>> endpoint to communicate with
>>>> majook : "+ e.getMessage());
>>>>
>>>> }
>>>>
>>>> byte[] LT_WriteData = new byte[64];
>>>>
>>>>
>>>> for (int i=0; i< 64; i++)
>>>> {
>>>> LT_WriteData[i]=(byte)0x00;
>>>> }
>>>> LT_WriteData[1] = (byte)0x30;
>>>>
>>>> try
>>>> {
>>>>
>>>> LCl_UsbPipeOut.syncSubmit(LT_WriteData);
>>>>
>>>>
>>>> }catch(UsbException LCl_UsbException){
>>>>
>>>> System.out.println("Unable to
>>>> submit data buffer to majook : " +
>>>> LCl_UsbException.getMessage());
>>>>
>>>> }
>>>> try
>>>> {
>>>>
>>>> LCl_UsbPipeOut.abortAllSubmissions();
>>>> LCl_UsbPipeOut.close();
>>>> }catch (UsbException LCl_Exception){
>>>> System.out.println("Could not open
>>>> endpoint to communicate with
>>>> majook : "+ LCl_Exception.getMessage())
>>>> }
>>>>
>>>> }
>>>> }catch(UsbException LCl_Exception){
>>>>
>>>> }
>>>>
>>>>
>>>> }
>>>>
>>>> public static List getUsbDevicesWithId(UsbDevice usbDevice, short
>>>> vendorId, short productId)
>>>> {
>>>> List list = new ArrayList();
>>>>
>>>> if (vendorId ==
>>>> usbDevice.getUsbDeviceDescriptor().idVendor() &&
>>>> productId ==
>>>> usbDevice.getUsbDeviceDescriptor().idProduct())
>>>> list.add(usbDevice);
>>>>
>>>> if (usbDevice.isUsbHub()) {
>>>> List devices =
>>>> ((UsbHub)usbDevice).getAttachedUsbDevices();
>>>> for (int i=0; i<devices.size(); i++)
>>>>
>>>> list.addAll(getUsbDevicesWithId((UsbDevice)devices.get(i),
>>>> vendorId, productId));
>>>> }
>>>>
>>>> return list;
>>>> }
>>>> }
>>>>
>>>>
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>>>>
>>>>
>>>
>>>
>>
>>
>
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