Hardware: steering wheel and pedals?

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... All you need to do is send 7 bytes to endpoint 1 on the device:

0xf8, 0x81, aa, bb, 0x00, 0x00, 0x00

Where aa, bb is a little-endian unsigned short valued somewhere between 40 and 900. For instance:

char deg40_msg[7] = {0xf8, 0x81, 0x28, 0x00, 0x00, 0x00, 0x00};
char deg900_msg[7] = {0xf8, 0x81, 0x84, 0x03, 0x00, 0x00, 0x00};

Would be the messages to set the soft-stops to 40 and 900 degrees respectively. Currently to do all this I manually unbind the usbhid driver, claim the interface, send the message, and then rebind the usbhid driver.

If anyone has questions or wants help, just post away.

Thanks for this gem eckzow!

I have successfully completed steps 1 and 4 but am struggling with 2 and 3.

Steps:
1. Unbind the interface. [Works OK. No problem.] (root)#>echo -n "1-2:1.0" > /sys/bus/usb/drivers/usbhid/unbind
2. Claim the interface. ??? libusb ??? usb_claim_interface() ???? How exactly do I do this?
3. Send message to endpoint 1. ??? How exactly do I do this?
4. Re-bind the interface [Works OK. No problem] (root)#>echo -n "1-2:1.0" > /sys/bus/usb/drivers/usbhid/bind

I guess I need to use libusb-0.1.12 from within a C/C++ program. Libusb is correclty installed and I have studied the test examples (testlibusb.c). Unfortunately, most of the examples only provide usb info and do not send data to an endpoint. I have not used C++ very much but am willing to quickly learn to get this done.

Any help on the this will be greatly appreciated.