> First off - newbie alert. I am just beginning to work with USB devices and
> quite frankly haven't really grasped them yet. I would RTFM if only I knew
> where it was.
>
> I am looking for some instructions/pseudocode on talking to an HID device.
> The
> device is a PowerLincv2 controller from Smarthome. It functions as a
> controller for controlling X10 and insteon devices.
PowerLinc V2 (and older powerlink for that matter) is just a regular usb device.
The fact that it's HID doesn't make any difference. So you can just use any
generic USB code with 8 byte buffer size. Therefore, RTFM <g> javax.usb API and
samples. But to start you off a bit:
1. To send. Get to outbound endpoint, then
UsbPipe pipe = ep.getUsbPipe();
UsbIrp irp = pipe.createUsbIrp();
irp.setData(_buf);
irp.setUsbException(null);
irp.setComplete(false);
pipe.syncSubmit(irp);
2. To read the data, get to the inbound endpoint, then
UsbPipe pipe = ep.getUsbPipe();
UsbIrp irp = pipe.createUsbIrp();
byte buf[] = new byte[8];
while (true) {
try {
irp.setData(buf);
irp.setComplete(false);
pipe.syncSubmit(_inIRP);
} catch (UsbException e) {
System.err.println(e.toString());
}
}
> Based on the dev docs one sends an 8 byte HID packet (0x02, 0x02
> 0x48,0x00,0x00,0x00,0x00,0x00) where the first byte is Count and the
> remaining 7 are data. The device then responds with 5 8 byte packets again
> with the first byte for Count and the next 7 for data.
>
> So far I've been able to find the device on the bus and query it. I can
> access
> the configurations, interface and endpoints. What I can't figure out is the
> general process/flow for sending data to the device and then reading the
> response.
>
> I've looked over the examples, but only the Mouse driver comes close to what
> I
> am trying to do, and I don't fully understand it.
>
> Could someone provide some basic info on how to accomplish this. Mostly what
> I
> need is pseudocode ro a set of general instructions - do this, then do this,
>
> then do this.
>
> Thanks!
>
> -steve
>
>
>
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