You need to figure out how to format those fields into a USB command.
I would expect your manual to have that info somewhere in it.
On Fri, Aug 15, 2008 at 9:37 AM, Jem <[EMAIL PROTECTED]> wrote:
> Hi
>
> I have a manual for the USB device I'm trying to control that describes the
> bytes I need to transmit to the device in order to perform functions.
>
> For example if I wish to turn it green (it's a light) I'd transmit:
>
> Recipient Byte: 8
> Device Model Byte: 18
> Major Command Byte: 10
> Minor Command Byte: 34
> Data LSB: 0
> Data MSB: 80
> Length Short: 0, 0
>
> I'm not sure how I translate this to methods in the API. Can I use a method
> on StandardRequest?
>
> Alternatively, I tried the following, which resulted in a usbStallException:
>
> byte bmRequestType =
> UsbConst.REQUESTTYPE_DIRECTION_OUT |
> UsbConst.REQUESTTYPE_TYPE_STANDARD | UsbConst.REQUESTTYPE_RECIPIENT_DEVICE;
> byte bRequest = UsbConst.REQUEST_SET_FEATURE;
> short wValue = UsbConst.DESCRIPTOR_TYPE_DEVICE << 8;
> short wIndex = 0;
>
> byte[] buffer = new byte[]{8,18,10,34,0,80,0,0};
> UsbControlIrp usbControlIrp =
> usbDevice.createUsbControlIrp(bmRequestType, bRequest, wValue, wIndex);
> usbControlIrp.setData(buffer);
> usbDevice.syncSubmit(usbControlIrp);
>
> Am I on the right track?
>
> Thanks for any help
> Jeremy
>
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