def configure():
"""Configures LabJack U3 to use FIO ports as Digital Output.
Sets signal 0 on card.
Returns 0 if everything is OK"""
global u3card
u3card = u3.U3()
u3card.configU3(FIOAnalog=0, FIODirection=255, FIOState=0)
u3card.configIO()
u3card.getFeedback(
u3.PortStateWrite(State=[0, 0x00, 0x00], WriteMask=[0xff, 0x00, 0x00]))
return 0
def initializeLabjack(params):
# Initialize labjack device object and get calibration data.
if params['options_sendSYNC'] == True:
try:
params['SYNC_deviceObj'] = u3.U3()
params['SYNC_deviceObj'].getCalibrationData()
if params['SYNC_useDigitalOut'] == True:
# we are using digital output
# set FI02 direcection to output
params['SYNC_deviceObj'].getFeedback(u3.BitDirWrite(2, 1))
print(
'Sync pulses are sent from the FI02 channel. Connect cathode (red wire) to FI02 and annode (black wire) to ground.'
)
else:
# we are using analog output
params['SYNC_pulse_val'] = params[
'SYNC_deviceObj'].voltageToDACBits(params['SYNC_volt'],
dacNumber=0,
is16Bits=False)
params['SYNC_zero_val'] = params[
'SYNC_deviceObj'].voltageToDACBits(0,
dacNumber=0,
is16Bits=False)
print(
'Sync pulses are sent from the DAC0 channel. Connect cathode (red wire) to DAC0 and annode (black wire) to ground.'
)
except:
print(
'Unable to open LABJACK. Check if it is connected. If not using sync pulses, set "options_sendSYNC" to False'
)
core.quit()
# returns updated params
return params
from psychopy import visual, core, event, sound
from labjack import u3
import numpy, sys, platform
# setup window (can use for visual pulses)
win = visual.Window([800, 800], monitor='testMonitor')
win.recordFrameIntervals = False
stim = visual.GratingStim(win, color=-1, sf=0)
sound.init(rate=48000, buffer=48)
print('Using %s(with %s) for sounds' % (sound.audioLib, sound.audioDriver))
timeWithLabjack = True
maxReps = 100
# setup labjack U3
ports = u3.U3()
ports.__del__ = ports.close # try to autoclose the ports if script crashes
# get zero value of FIO6
startVal = ports.getFIOState(6) # is FIO6 high or low?
print('FIO6 is at', startVal, end='')
print('AIN0 is at', ports.getAIN(0))
if timeWithLabjack:
print('OS\tOSver\taudioAPI\tPsychoPy\trate\tbuffer\tmean\tsd\tmin\tmax')
snd = sound.Sound(1000, secs=0.1)
core.wait(2) # give the system time to settle?
delays = []
nReps = 0
while True: # run the repeats for this sound server
if event.getKeys('q'):
def trigger_parallel(code=1,trigDuration=0.010):
"""
Here the wait is based on time.sleep(), in which
"the substantive part of the sleep operation is wrapped in a Py_BEGIN_ALLOW_THREADS and
Py_END_ALLOW_THREADS block, allowing other threads to continue to execute while the current one sleeps"
[http://stackoverflow.com/questions/92928/time-sleep-sleeps-thread-or-process]
This leads to variability of the trigger durations if used in threaded mode,
but likely give the experiment excellent timing.
"""
setParallelData(code)
# core.wait(trigDuration,trigDuration/2.) # equivalent to time.sleep(0.005) plus a tight while-loop for another 0.005 secs!
# core.wait(trigDuration) # equivalent to time.sleep(0.010)
# setParallelData(0)
u3dev = u3.U3()
u3dev.getFeedback(u3.PortStateWrite([0x00, 0x00, 0x00]))
def trigger_u3(code=1, trigDuration=0.010):
u3dev.getFeedback(u3.PortStateWrite([0x00, code, 0x00]))
# core.wait(trigDuration,trigDuration/2.) # equivalent to time.sleep(0.005) plus a tight while-loop for another 0.005 secs!
# core.wait(trigDuration)
# u3dev.getFeedback(u3.PortStateWrite([0x00, 0x00, 0x00]))
# u3dev.toggleLED()
###### Window and stimulus definitions
bckColour = '#000000'
monitor = 'testMonitor'
frameRate = 120.0
stimSize = 8.
stimCycPerDeg = 1.
def __init__(self):
# Have to ensure u3 isn't imported unless the U3Port is explicitly needed
from labjack import u3 # noqa
self.u3dev = u3.U3() # noqa
self.PortStateWrite = u3.PortStateWrite
params = {}
params['numTrials'] = 30
params['SYNC_useDigitalOut'] = True
#params['SYNC_digitalOut_chan'] = 'FI02' # These are hard coded
#params['SYNC_analogOut_chan'] = 'DAC0'
params['SYNC_volt'] = 1.5 # 1.5 V pulse (only matters for analog out)
# these are populated after getting calibration data
params['SYNC_pulse_val'] = None
params['SYNC_zero_val'] = None
params['SYNC_deviceObj'] = None
# initialize labjack
try:
params['SYNC_deviceObj'] = u3.U3()
params['SYNC_deviceObj'].getCalibrationData()
if params['SYNC_useDigitalOut'] == True:
# we are using digital output
# set FI02 direcection to output
params['SYNC_deviceObj'].getFeedback(u3.BitDirWrite(2,1))
print('Sync pulses are sent from the FI02 channel. Connect cathode (red wire) to FI02 and annode (black wire) to ground.')
else:
# we are using analog output
params['SYNC_pulse_val'] = params['SYNC_deviceObj'].voltageToDACBits(params['SYNC_volt'], dacNumber = 0, is16Bits = False)
params['SYNC_zero_val'] = params['SYNC_deviceObj'].voltageToDACBits(0, dacNumber = 0, is16Bits = False)
