Could you provide a basic GetDescriptor example?

[badvision]

I've been able to hit Bluetooth game controllers with this library (extremely cool) but having no luck fetching the HID descriptors so I can write code that is able to adapt to the available features of the game controller in question. Any pointers or a sample for this would be greatly appreciated.

[badvision]

Please note, I am certainly not presuming you're going to provide a report parser, just an example of how to send the get_descriptor request and get the descriptor back as binary -- anything will help at this point as I am rather stuck.

Here's what I'm attempting after opening the device:

byte[] dataBuffer = new byte[64];
Arrays.fill(dataBuffer, (byte) 0);
int index = 0;
dataBuffer[index++] = (byte) 0x080;
dataBuffer[index++] = 6;
dataBuffer[index++] = 0x021;
dataBuffer[index++] = 0;
dataBuffer[index++] = 1;
dataBuffer[index++] = 0;
dataBuffer[index++] = 64;
dataBuffer[index++] = 0;

int i = device.write(dataBuffer, (byte) 64, (byte) 0);
System.out.printf("response: %d\n", i);

Response comes back as -1 and subsequent reads are empty until the joystick itself receives user input and it sends that as data packets. So I get data, but unless I have a descriptor I have to write a one-off parser to read just that joystick's input. This will, of course, not be useful to other people who have different types of game controllers.

[gary-rowe]

Hi. Sorry for the slow response. Did you manage to get this sorted in the end?

[gary-rowe]

No response, so closing.