PsychoPy doesn't (yet) have any built-in parallel port handling. If you want to communicate with these ports from a windows box you will need winioport.
Download winioport and install as instructed.
You can then control your parallel port with commands such as:
import winioport LPT1 = 0x378 #on most PCs this is the address of the parallel (printer) port winioport.out(LPT1,0xFF) #set all pins on LPT1 to high winioport.out(LPT1,0x00) #set all pins on LPT1 to low winioport.pportD0(1) #set pin 2 to high (which is data bit 0) winioport.pportD1(0) #set pin 3 to high (which is data bit 1)
Often people use hexadecimal codes to control the bits (eg. 0xFF) but you might find it more intuitive to use an integer conversion of a binary string like this:
winioport.out(LPT1,int('00000010', 2))# turns pin 3 to high and all others to low
winioport.out(LPT1,int('11111110', 2))# turns all except pin 2 to high
