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import tkinter as tk
from tkinter import *
from tkinter import ttk
import time # For sleep, clock, time and perf_counter
from datetime import datetime
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import (FigureCanvasTkAgg, NavigationToolbar2Tk)
import ue9qol
class SinGen:
def __init__(self, ampl=1, offset=0, phase=0, sweeper=None):
self.ampl = ampl
self.phase = phase
self.sweeper = sweeper
self.offset = offset
def getValue(self, sweeper=None):
if sweeper is None and self.sweeper is None:
print("Error: generator needs sweeper")
return 0
if sweeper is None:
sweeper = self.sweeper
return self.ampl * np.sin( 2*np.pi*sweeper.getRelPos()) + self.offset
class RampGen:
# monotonically goes from start to stop, at final point move to start
def __init__(self, start=0, stop=0, sweeper=None):
self.start = start
self.stop = stop
self.sweeper = sweeper
def getValue(self, sweeper=None):
if sweeper is None and self.sweeper is None:
print("Error: generator needs sweeper")
return 0
if sweeper is None:
sweeper = self.sweeper
return self.start + sweeper.getRelPos()*(self.stop - self.start)
class Sweeper:
def __init__(self, widget, start, stop, Npoints, SweepTime, onTicCallbacks=[]):
# walk from start to stop with Npoints
# cnt = 1 corresponds to start
# cnt = Npoints corresponds to stop
# variables like relVar are relative to the start of the period
self.cnt = 0 # onTic will increase it right away
self.widget = widget
self.start = start
self.stop = stop
self.Npoints = Npoints
self.SweepTime = SweepTime
self.onTicCallbacks = onTicCallbacks
self.isOn = False
self.isRestart = True
self.isTicRunning = False
self.span = self.stop - self.start
self.center = (self.stop + self.start)/2
self.dPos = self.span/(self.Npoints-1)
self.dT = self.SweepTime/(self.Npoints-1)
self.dTmS = round(self.dT*1000) # dT in microSeconds
def reset(self):
self.cnt = 0 # onTic will increase it right away
self.isRestart = False
self.startTime = datetime.now()
def onTic(self):
if not self.isOn:
self.isTicRunning = False
return
self.widget.after(self.dTmS, self.onTic)
if self.isTicRunning:
print("Overflow in Sweeper: need more time to finish a tic.")
return
self.isTicRunning = True
if self.isRestart:
self.reset()
self.isRestart = False
self.incr()
for cb in self.onTicCallbacks:
cb(self)
self.isTicRunning = False
def cmdRestart(self):
self.cnt = 0
if self.isOn:
self.isRestart = True
return
self.reset()
self.isOn = True
self.onTic()
def cmdStart(self):
self.isOn = True
self.onTic()
def cmdStop(self):
self.isOn = False
def incr(self):
self.cnt += 1
self.updPos()
def updPos(self):
self.relCnt = 1 + ((self.cnt-1) % self.Npoints)
self.pos = self.start + self.dPos * (self.relCnt - 1)
self.relPos = (self.pos-self.start)/self.span
def getCnt(self):
return self.cnt
def getRelCnt(self):
return self.relCnt
def getPos(self):
return self.pos
def getRelPos(self):
return self.relPos
class Experiment:
def __init__(self, root):
self.root = root
self.tic = 0
self.data = {}
self.data['tic'] = []
self.data['ch1'] = []
self.guiSetup(root)
self.hardware = {}
self.hardwareSetup()
self.sweeper = Sweeper(self.root, 1, 10, 100, 10, onTicCallbacks=[self.onTic])
self.funcGen = SinGen(1, 0, sweeper = self.sweeper)
# self.root.after(1000, self.hello )
def hardwareSetup(self):
self.hardware['LabJack'] = ue9qol.UE9qol()
def guiSetup(self, root):
self.bRestart=Button(root,text="RESTART",command=self.restart,font=('Arial','24'))
self.bRestart.pack()
self.bStart=Button(root,text="START",command=self.start,font=('Arial','24'))
self.bStart.pack()
self.bStop=Button(root,text="STOP",command=self.stop,font=('Arial','24'))
self.bStop.pack()
self.bExit=Button(root,text="EXIT",command=exit,font=('Arial','24'))
self.bExit.pack()
self.fig=plt.figure()
self.ax = self.fig.add_subplot(1,1,1)
# self.ax.set_xlim([0,20])
# self.ax.set_ylim([0,20])
# self.ax.plot([i for i in range(10)],[i for i in range(10)])
self.canvas = FigureCanvasTkAgg(self.fig, master = root)
self.canvas.draw()
# placing the canvas on the Tkinter window
self.canvas.get_tk_widget().pack()
# creating the Matplotlib toolbar
self.toolbar = NavigationToolbar2Tk(self.canvas, root)
self.toolbar.update()
# placing the toolbar on the Tkinter window
self.canvas.get_tk_widget().pack()
def stop(self):
self.sweeper.cmdStop()
def start(self):
self.sweeper.cmdStart()
def restart(self):
self.sweeper.cmdRestart()
def onTic(self,swp=None):
if swp is None:
swp = self.sweeper
# self.root.after(1000, self.hello )
# self.sweeper.incr()
# tic = self.sweeper.getCnt()
x = swp.getRelPos()
y = self.funcGen.getValue(swp)
# y = self.sweeper.getPos()
# self.hardware['LabJack'].setOutputCh(0, x/2)
self.hardware['LabJack'].setOutputCh(0, 2)
self.data['tic'].append(x)
# y= self.hardware['LabJack'].getInputCh(1)
# self.data['ch1'].append( self.hardware['LabJack'].getInputCh(1) )
self.data['ch1'].append( y )
start = datetime.now()
self.ax.cla()
self.ax.plot(self.data['tic'], self.data['ch1'])
self.canvas.draw()
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['ch1'])) )
if __name__ == '__main__':
root=Tk()
experiment=Experiment(root)
root.mainloop()
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