Test

#!/usr/bin/env python2
# -*- coding: utf-8 -*-
"""
Created on Mon May 14 14:01:34 2018

@author: Mitch
"""

import traceback
from datetime import datetime

import matplotlib.pyplot as plt
#import matplotlib.animation as animation
#import numpy as np
from drawnow import drawnow
#from IPython import get_ipython
from multiprocessing import Process
from pyqtgraph.Qt import QtGui, QtCore
import pyqtgraph as pg
import random
'''
Import and open LabJack U3 package
'''
import u3
d=u3.U3() #open

'''
Set all channels to analog
'''
d.configIO(FIOAnalog = 31)

'''
Number of packets to be read.
'''
Max_Requests = 100

'''
Get calibration data
'''
d.getCalibrationData()

'''
Set the stream parameters: 1 channel, positive channel #0,
negative channel #31 ==single ended, resolutaion 3 == faster but higher noise.
Sample rate = scanrate * numchannels, max 50k samples/s.
Samples per packet = 25 for data tranfer efficiency
'''
packetsPerRequest = 50
print('Configuring U3 Stream...')
d.streamConfig(NumChannels=1,PChannels=[0],NChannels=[31],Resolution=1,\
               ScanFrequency=10000,SamplesPerPacket=25)

'''
Use "try" to prevent program crash with errors.
'''

d.streamStart()
rawDataList = []
runTimeList = []
start = datetime.now()
print('Started stream at ',datetime.now(),'\n') #print the scan start time

'''
Initialize Counters
'''
missed = 0
dataCount = 0
packetCount = 0

''' Try Live plotting data'''

app = QtGui.QApplication([])
p = pg.plot()
curve = p.plot()
data = []

for r in d.streamData():    
    def updater():
        data.append(rawDataList)
        curve.setData(data)
    
    
    
    
timer = QtCore.QTimer()
timer.timeout.connect(updater)
timer.start(0)


d.streamStop()
stop = datetime.now()
print('\n','Stream stopped at ',datetime.now(),'\n')
'''close u3'''
d.close()

if __name__ == '__main__':
    import sys
    if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
        QtGui.QApplication.instance().exec_()