Created
August 13, 2012 22:15
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Serial value plotting
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| import numpy as np | |
| import matplotlib.pyplot as plt | |
| import matplotlib.animation as animation | |
| import serial | |
| def list_shift(a,x): | |
| del a[0] | |
| a.append(x) | |
| ser = serial.Serial( | |
| port='/dev/ttyUSB0', | |
| baudrate=57600, | |
| bytesize=serial.EIGHTBITS, | |
| parity=serial.PARITY_NONE, | |
| stopbits=serial.STOPBITS_ONE, | |
| timeout=0.25, | |
| xonxoff=0, | |
| rtscts=0, | |
| interCharTimeout=None | |
| ) | |
| fig = plt.figure() | |
| ax1 = fig.add_subplot(111) | |
| ax2 = fig.add_subplot(111) | |
| ax3 = fig.add_subplot(111) | |
| ax4 = fig.add_subplot(111) | |
| line1, = ax1.plot(np.arange(10)) | |
| line2, = ax2.plot(np.arange(10)) | |
| line3, = ax3.plot(np.arange(10)) | |
| line4, = ax4.plot(np.arange(10)) | |
| ax1.set_ylim(0, 800) | |
| ax2.set_ylim(0, 800) | |
| ax3.set_ylim(0, 800) | |
| ax4.set_ylim(0, 800) | |
| y_data1 = range(10) | |
| y_data2 = range(10) | |
| y_data3 = range(10) | |
| y_data4 = range(10) | |
| def update(data): | |
| try: | |
| list_shift(y_data1,float(data[0])) | |
| list_shift(y_data2,float(data[1])) | |
| list_shift(y_data3,float(data[2])) | |
| list_shift(y_data4,float(data[3])) | |
| line1.set_ydata(y_data1) | |
| line2.set_ydata(y_data2) | |
| line3.set_ydata(y_data3) | |
| line4.set_ydata(y_data4) | |
| except Exception: | |
| print "something fucked" | |
| def data_gen(): | |
| while True: yield [ x.strip() for x in ser.readline().split(';') ] | |
| ani = animation.FuncAnimation(fig, update, data_gen, interval=250) | |
| plt.show() |
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