Python Matplotlib按钮

我是一个可怜的程序员,所以请原谅我的简单问题.
我正在尝试构建一个从串行接口读取数据并将其显示在屏幕上的小程序.我已经能够在i Python notebook和matplotlib中做到这一点,我已经能够在屏幕上添加按钮来控制进入界面的数据请求：
按钮点击 – > ser.write,ser.read,draw

我现在正在努力设计程序,按下按钮将以固定的时间步骤开始重复数据收集,直到按钮再次切换为止.有人可以帮我拿出这样一个程序的草图吗？

至今：

%pylab 

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.widgets import Button

import serial
import binascii
import struct
from time import sleep

fig,ax = plt.subplots()
fig.subplots_adjust(bottom=0.2)
ax.axis([0,10,255])

ser = serial.Serial('COM5',1000000,timeout=0) 
ser.write("0".encode())
sleep(0.1)
if ser.read()== b'xf1':
    print ("Interface is responding")
else:
    print ("Interface is NOT responding")
    ser.flush()
    ser.close()
    exit(1)

t = np.linspace(0,2048)
line1,line2 = plt.plot(t,0*t,t,lw=2)

def ShowChannel(Channel):
    if Channel==1:
        ser.write("11".encode())
    elif Channel==2:
        ser.write("12".encode())
    sleep(0.05)
    Header = ser.read().decode("utf-8")
    # print(Header)
    if Header == "1":
        data = ser.read(2048)
        y = struct.unpack('2048B',data)
        # print(y)
        if Channel==1:
            line1.set_ydata(y)
        elif Channel==2:
            line2.set_ydata(y)
        fig.canvas.draw()

def one(event):
    ShowChannel(1)

def two(event):
    ShowChannel(2)

axone = plt.axes([0.1,0.05,0.1,0.075])
axtwo = plt.axes([0.21,0.075])
axstart = plt.axes([0.40,0.075])
axstop = plt.axes([0.51,0.075])

bone = Button(axone,'1')
bone.on_clicked(one)
btwo = Button(axtwo,'2')
btwo.on_clicked(two)

按照评论中引用的例子,我添加了以下内容

# Build check button axes
rax = plt.axes([0.7,0.1],aspect='equal')
labels = ('go!',)
check = CheckButtons(rax,labels,(False,))

KeepShowing = False

def func(event):
    global KeepShowing
    KeepShowing = not KeepShowing
#    print(event,KeepShowing)

check.on_clicked(func)

while True:
    if KeepShowing:
        ShowChannel(1)
    sleep(1)

但是底部的循环不是如何做到的.当我用它启动程序时,图形窗口会打开,但不会显示任何内容.只有当我在ipython中断内核时才会构建屏幕.

import matplotlib.pyplot as plt
fig,ax = plt.subplots()
timer = fig.canvas.new_timer(interval)
timer.add_callback(function,args)

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.widgets import Button

import serial
import binascii
import struct
from time import sleep

fig,data)
        # print(y)
        if Channel==1:
            line1.set_ydata(y)
        elif Channel==2:
            line2.set_ydata(y)
        fig.canvas.draw()

def one(event):
    global channel1_on

    if channel1_on == 0:
        channel1_on = 1
        timer1.start()
    else:
        channel1_on = 0
        timer1.stop()
        line1.set_ydata(None)

def two(event):
    global channel2_on

    if channel2_on == 0:
        channel2_on = 1
        timer2.start()
    else:
        channel2_on = 0
        timer2.stop()
        line2.set_ydata(None)

channel1_on = 0
channel2_on = 0
timer1 = fig.canvas.new_timer(interval = 50)
timer1.add_callback(ShowChannel,1)
timer2 = fig.canvas.new_timer(interval = 50)
timer2.add_callback(ShowChannel,2)

axone = plt.axes([0.1,'2')
btwo.on_clicked(two)

plt.show()