Psychtoolbox>PsychHID.{mex*} subfunction

usbHandle = PsychHID(‘OpenUSBDevice’, vendorID, deviceID [, configurationId=0])

Tries to open and initialize a generic USB device specified by ‘vendorID’ and
‘deviceID’.
On success, a ‘usbHandle’ to the opened device is returned.
‘vendorID’ and ‘deviceID’ must be numeric (integer) values which identify the
target device by the official vendor id of the device manufacturer, and the
device id of the specific model of a device.
‘configurationId’ optional: Set USB device configuration to given value. By
default, configuration zero is chosen. Changing the configuration id is only
possible if the device isn’t in use already, and not under control of an
operating system device driver. A value of -1 would skip changing the
configuration.
A call with supported = PsychHID(‘OpenUSBDevice’, -1, -1); returns USB low-level
support status: 1 = Supported, 0 = Not supported, e.g., due to missing libusb-1
library.

###See also: CloseUSBDevice USBControlTransfer USBBulkTransfer USBInterruptTransfer