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62 lines
1.2 KiB
Python
62 lines
1.2 KiB
Python
# python_live_plot.py
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import time
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from simple_pid import PID
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from itertools import count
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import matplotlib.pyplot as plt
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from matplotlib.animation import FuncAnimation
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import minimalmodbus
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tempSens = minimalmodbus.Instrument('/dev/ttyUSB1', 1)
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tempSens.serial.baudrate = 38400
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OutputDriver = minimalmodbus.Instrument('/dev/ttyUSB1', 2)
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OutputDriver.serial.baudrate = 38400
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pid = PID(1, 0.01, 0, setpoint=60)
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plt.style.use('fivethirtyeight')
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x_values = []
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y_values = []
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index = count()
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def animate(i):
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try:
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temp = tempSens.read_float(1)
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y_values.append(temp)
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x_values.append(next(index))
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print(temp, end='\t')
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control = pid(temp)
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if(control>100):
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control = 100;
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control = (control/1000.0)
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print(control, end='\t')
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print(0.1-control)
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if(control > 0):
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OutputDriver.write_bit(0, 1, functioncode=15)
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time.sleep(control)
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if(control<0.1):
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OutputDriver.write_bit(0, 0, functioncode=15)
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time.sleep(0.1-control)
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plt.cla()
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plt.scatter(x_values, y_values)
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except:
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pass
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ani = FuncAnimation(plt.gcf(), animate, 2000)
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plt.tight_layout()
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plt.show()
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