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plotting data from serial port with matplotlib
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
import serial
fig, ax = plt.subplots()
line, = ax.plot(np.random.rand(10))
ax.set_ylim(-5000, 5000)
xdata, ydata = [0]*100, [0]*100
raw = serial.Serial("/dev/ttyUSB1",9600)
raw.open()
def update(data):
line.set_ydata(data)
return line,
def run(data):
t,y = data
del xdata[0]
del ydata[0]
xdata.append(t)
ydata.append(y)
line.set_data(xdata, ydata)
return line,
def data_gen():
t = 0
while True:
t+=0.1
try:
dat = int(raw.readline())
except:
dat = 0
yield t, dat
ani = animation.FuncAnimation(fig, run, data_gen, interval=0, blit=True)
plt.show()
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