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from pyqtgraph.Qt import QtGui, QtCore
import pyqtgraph as pg
from pyqtgraph.dockarea import *
from pyqtgraph.exporters import ImageExporter
import platform
import argparse
from threading import Thread
import time # For sleep, clock, time and perf_counter
from datetime import datetime, timedelta
import numpy as np
import csv
import ue9qol
from funcGenerator import Sweeper, SinGen, TriangleGen, RampGen, PulseGen
import rfGen
class Experiment:
def __init__(self, root, args):
self.root = root
self.tic = 0
self.channelsNames2grab={'tic', 'x','rfFreq','dac0', 'dac1', 'adc0', 'adc1', 'adc2', 'adc3'}
self.channelsColor = { 'adc0': 'k', 'adc1': 'c', 'adc2': 'm', 'adc3': 'b', 'dac0': 'w', 'dac1': 'g'}
#self.channelsNames2plot={'dac0', 'dac1', 'adc0', 'adc1', 'adc2', 'adc3'}
if args.test:
self.channelsNames2plot={'adc0', 'adc1', 'adc2', 'adc3'}
else:
self.channelsNames2plot={'adc0'}
self.xChannelName='rfFreq' # can be also 'tic' or any of above
self.xlabel=''
self.channelGraph={}
self.clearData()
self.guiSetup(root)
self.guiSweeper = Sweeper(self.root, Npoints=10, SweepTime=1, onTicCallbacks=[self.updatePlot])
self.hardware = {}
self.sweeper = Sweeper(self.root, Npoints=500, SweepTime=10, onTicCallbacks=[self.onTic])
self.funcGen = TriangleGen(0, 5, sweeper = self.sweeper)
fCent=6.83468e9
self.fCent=fCent
fSpan=100e3
self.fSpan=fSpan
self.rfGenFunc = RampGen(fCent-fSpan/2, fCent+fSpan/2, sweeper = self.sweeper)
self.hardwareSetup(args)
# now we ready to do gui
self.guiSweeper.cmdStart()
def hardwareSetup(self,args):
if args.test:
print("Test mode, run with fake hardware")
self.hardware['LabJack'] = ue9qol.UE9qolDummy(sweeper=self.sweeper)
self.hardware['rfGen'] = rfGen.rfGenLMX2487Dummy(port='/dev/ttyUSB0', speed=115200, timeout=1)
else:
self.hardware['LabJack'] = ue9qol.UE9qol()
if platform.system() == 'Linux':
rf=rfGen.rfGenLMX2487(port='/dev/ttyUSB0', speed=115200, timeout=1)
else:
rf=rfGen.rfGenLMX2487(port='COM5', speed=115200, timeout=1)
self.hardware['rfGen'] = rf
def guiSetup(self, root):
area = DockArea()
d1 = Dock("Controls", size=(5,1))
d2 = Dock("Data", size=(100,100))
area.addDock(d1, 'top')
area.addDock(d2, 'bottom', d1)
self.root.addWidget(area)
self.dataPlot = pg.PlotWidget(name='Plot1')
d2.addWidget(self.dataPlot)
self.dataPlot.showGrid(x=True, y=True)
self.dataPlot.addLegend()
w1 = pg.LayoutWidget()
bAutoZoom = QtGui.QPushButton('AutoZoom')
bAutoZoom.clicked.connect(self.autoZoom)
bRestart = QtGui.QPushButton('Restart')
bRestart.clicked.connect(self.restart)
bStart = QtGui.QPushButton('Start')
bStart.clicked.connect(self.start)
bStop = QtGui.QPushButton('Stop')
bStop.clicked.connect(self.stop)
bSave = QtGui.QPushButton('Save data')
bSave.clicked.connect(self.saveCmd)
bExit = QtGui.QPushButton('Exit')
bExit.clicked.connect(exit)
w1.addWidget(bAutoZoom, row=0, col=0)
w1.addWidget(bRestart, row=0, col=1)
w1.addWidget(bStart, row=0, col=2)
w1.addWidget(bStop, row=0, col=3)
w1.addWidget(bSave, row=0, col=4)
w1.addWidget(bExit, row=0, col=5)
d1.addWidget(w1)
def clearData(self):
self.data = {}
for ch in self.channelsNames2grab:
self.data[ch] = []
def stop(self):
self.sweeper.cmdStop()
def start(self):
self.sweeper.cmdStart()
def restart(self):
self.clearData()
self.sweeper.cmdRestart()
def saveCmd(self):
csv_file = 'data.csv'
data = self.data
try:
with open(csv_file, 'w') as csvfile:
writer = csv.writer(csvfile)
writer.writerow(data.keys())
writer.writerows(zip(*data.values()))
except IOError:
print('I/O error')
try:
ex = ImageExporter(self.channelGraph['adc0'])
ex.parameters()['width'] = 800
ex.parameters()['height'] = 600
ex.export("snapshot.png")
except ZeroDivisionError:
print("Early version (0.10.0) of PyQtGraph has bug in exporter. The image file is not generated.")
def onTic(self,swp=None):
start = datetime.now()
if swp is None:
swp = self.sweeper
# global tic counter
tic = self.sweeper.getCnt()
self.data['tic'].append(tic)
# RF generator
rfFreq = self.rfGenFunc.getValue(swp)
self.hardware['rfGen'].setFreq(rfFreq)
self.data['rfFreq'].append(rfFreq)
# DAQ
daq0 = self.hardware['LabJack']
# dac0
# dac0 = self.funcGen.getValue(swp)
dac0 = 0
dac0 = self.funcGen.getValue(swp)
daq0.setOutputCh(0, dac0)
self.data['dac0'].append(dac0)
# dac1
# dac1 = PulseGen(ampl=5, sweeper=swp).getValue()
dac1 = 0
daq0.setOutputCh(1, dac1)
self.data['dac1'].append(dac1)
# adc0
adc0= daq0.getInputCh(0)
# adc0 = SinGen(ampl=4, sweeper=swp).getValue()
self.data['adc0'].append( adc0 )
# adc1
adc1= daq0.getInputCh(1)
# adc1 = SinGen(ampl=1, sweeper=swp).getValue()
self.data['adc1'].append( adc1 )
# adc2
adc2= daq0.getInputCh(2)
# adc2 = SinGen(ampl=2, sweeper=swp).getValue()
self.data['adc2'].append( adc2 )
# adc3
adc3= daq0.getInputCh(3)
# adc3 = SinGen(ampl=3, sweeper=swp).getValue()
self.data['adc3'].append( adc3 )
# X-axis (i.e. independent variable)
# self.data['x'].append(tic)
# self.data['x']=self.data[self.xChannelName]
x=self.data[self.xChannelName][-1]
x=(x-self.fCent)
self.data['x'].append(x)
self.dataPlot.setLabel('bottom', 'Frequency offset', units='Hz')
self.dataPlot.setLabel('left', 'Signal', units='V')
stop = datetime.now()
runTime = (stop-start).seconds + float((stop-start).microseconds)/1000000
# print("onTic DAQ took %s seconds." % (runTime) )
def autoZoom(self):
self.dataPlot.autoRange()
def updatePlot(self,swp=None):
start = datetime.now()
x = self.data['x']
for name in self.channelsNames2plot:
if name not in self.data:
continue
y = self.data[name]
if name not in self.channelGraph:
if name in self.channelsColor:
color = self.channelsColor[name]
else:
color = (255,0,0)
self.channelGraph[name]=self.dataPlot.plot(x,y, pen=None, symbol='o', symbolPen=None, symbolBrush=color, symbolSize=5, name=name)
else:
self.channelGraph[name].setData(x,y)
# centralFreqFormatted = pg.siFormat(self.fCent, suffix='Hz', precision=4)
# showing trailing zeros is tricky
centralFreqFormatted = f"{self.fCent/1e9:.6}"
centralFreqFormatted = str.ljust(centralFreqFormatted, 8, '0') + " GHz"
self.dataPlot.setTitle(f"Signals around center frequency {centralFreqFormatted}")
stop = datetime.now()
runTime = (stop-start).seconds + float((stop-start).microseconds)/1000000
print("Replot took %s seconds to plot %s points." % (runTime, len(self.data['adc1'])) )
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Perform EIT based experiment.')
parser.add_argument('--test', '-t', action='store_true',
help='test mode, use fake/dummy hardware')
args = parser.parse_args()
app = QtGui.QApplication([])
pg.setConfigOption('background', 'w')
pg.setConfigOption('foreground', 'k')
mw = QtGui.QMainWindow()
mw.setWindowTitle('pyqtgraph example: PlotWidget')
mw.resize(800,800)
cw = QtGui.QWidget()
mw.setCentralWidget(cw)
l = QtGui.QVBoxLayout()
cw.setLayout(l)
mw.show()
experiment=Experiment(l, args)
app.exec()
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