Trigger test

trigger_test.py

# Create a canvas to show info on screen
from openexp.canvas import canvas
canvas = canvas(self.experiment)
from ctypes import windll, c_ubyte
io = windll.dlportio # requires dlportio.dll !!!
# Define port:
port = 0x4cf8
# Execute the script below twice, once in the old way, once in the
# newly-suggested way:
for change_to_ubyte in (False, True):
	# Send the trigger for all values between 0 and 255:
	for trigger in range(0,256):
		# In the second run, change trigger to ubyte:
		if change_to_ubyte:
			trigger = c_ubyte(trigger)
		# Send the trigger
		io.DlPortWritePortUchar(port, trigger)
		# And also log the sent trigger to the OpenSesame log file:
		self.experiment.log(trigger)
		# Show some info
		canvas.clear()
		canvas.text('%s sent (ubyte = %s)' % (trigger, change_to_ubyte))
		canvas.show()
		# Wait a bit
		self.sleep(100)