http://libusb.sourceforge.net/doc/fu...ontrolmsg.html This is all you find in the net abuot usb_control_msg. First, the number of parameters is two more than in the device request. Example:
function returns int number of bytes read or written, there are only two pointer, so *dev should be the device and *bytes the buffer; because you linked the prototype, i think sources haven't more infos
Very little. The parameters
really correspond to
in table 9-2 of the USB 1.1 specification but there is wLength also in the table. Besides, for the rest of the parameters, there is no documentation that I know of, certainly not in the libusb.sourceforge.net site. So for the designer it's a matter of guessing?
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