monitor_temp.py

import numpy as np
from matplotlib.lines import Line2D
import matplotlib.pyplot as plt
import matplotlib.animation as animation
import serial
import time
import msvcrt

if __name__ == '__main__':
    from argparse import ArgumentParser
    parser=ArgumentParser()
    parser.add_argument('COMport',help='Numer portu COM (domyślnie COM5)', default='COM5')
    parser.add_argument('maxt',help='Zakres czasowy monitoringu w sekundach np. 2000', type=int, default=2000)
    parser.add_argument('maxT', help='Górna granica temperatury w stopniach Celsjusza np. 100', type=int, default=100)
    parser.add_argument('minT', help='Dolna granica temperatury w stopniach Celsjusza np. 20', type=int, default=20)
    args=parser.parse_args()

class Scope(object):
    def __init__(self, ax, maxt=args.maxt, dt=1):
        self.ax = ax
        self.dt = dt
        self.maxt = maxt
        self.tdata = [0]
        self.ydata = [0]
        self.line = Line2D(self.tdata, self.ydata)
        self.ax.add_line(self.line)
        self.ax.set_ylim(args.minT, args.maxT)
        self.ax.set_xlim(0, self.maxt)

    def update(self, y):
        lastt = self.tdata[-1]
        if lastt > self.tdata[0] + self.maxt:  # reset the arrays
            self.tdata = [self.tdata[-1]]
            self.ydata = [self.ydata[-1]]
            self.ax.set_xlim(self.tdata[0], self.tdata[0] + self.maxt)
            self.ax.figure.canvas.draw()

        t = self.tdata[-1] + self.dt
        self.tdata.append(t)
        self.ydata.append(y)
        self.line.set_data(self.tdata, self.ydata)
        return self.line,


def emitter(channel):
    'return a random value with probability p, else 0'
    while True:
        byte=ser.readline()
        byte1=byte[:5]
        byte2=byte[-7:-2]
        string1=byte1.decode(encoding='UTF-8')
        string2=byte2.decode(encoding='UTF-8')
        print(string1, string2)
        if channel == 1:
            yield float(string1)
        elif channel == 2:
            yield float(string2)
        time.sleep(1)
        if msvcrt.kbhit():
            break

ser=serial.Serial(args.COMport)
fig = plt.figure()
ax1 = fig.add_subplot(211)
ax2 = fig.add_subplot(212)

scope1 = Scope(ax1)
scope2 = Scope(ax2)
 #pass a generator in "emitter" to produce data for the update func
ani1 = animation.FuncAnimation(fig, scope1.update, emitter(1), interval=100,
                             blit=True)
ani2 = animation.FuncAnimation(fig, scope2.update, emitter(2), interval=100,
                             blit=True)

#ax1.set_xlabel('Czas [s]')
ax2.set_xlabel('Czas [s]')
ax1.set_ylabel('Temperatura [stopnie Celsjusza]')
ax2.set_ylabel('Temperatura [stopnie Celsjusza]')

ax1.set_title('Sonda hardshell')
ax2.set_title('Sonda light')

ax1.grid(True)
ax2.grid(True)

plt.show()