USB-1608FS: Configure digital port. This command sets the direction of
the DIO port to input or output.
DeviceIndex” is a small integer, the array index specifying which HID
device in the array returned by PsychHID(‘Devices’) is interface 0
of the desired USB-1208FS box.
BitNumber” ranges from 0:7 and can be a vector if you want to configure
multiple ports at the same time.
“direction” 0 = output, 1 = input; must be either a scalar or a vector of the
same length as BitNumber
See also Daq, DaqFunctions, DaqPins, DaqTest, PsychHIDTest, DaqDReadBit,
DaqDWriteBit, DaqDConfigPort, DaqDIn, DaqDOut.

* *
* If your Daq is a USB-1208FS or USB-1408FS, this code has not been tested *
* probably will not run on your device. The USB-1608FS has only one DIO *
* port and that is what this code was written to expect. To make it run on *
* a 12 or 14 bit device, you should fix this to take an additional input *
* (the portnumber) and to continue to behave as is for the 16-bit device. *
* An example of how to do that can be found in DaqDConfigPort. – mpr *
* *

Code has not been tested on USB-1208FS or USB-1408FS. If you have one of
those devices, you should modify this code to accept portnumber as an
additional input parameter. See DaqDConfigPort for an example of how to deal
with the added input.

12/17/07 mpr scavenged and modified code from DaqDConfigPort
1/11/08 mpr swept through trying to improve consistency across daq

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