BINS = 128


import serial

s = serial.Serial("/dev/ttyACM0", 115200)


def acquire_data():

    nb_val = 0
    while nb_val != BINS+1:
        l = s.readline()
        d = l.decode("utf8")
        v = d.split(' ')
        nb_val = len(v)

    n = [0] * BINS
    for i in range(BINS):
        try:
            n[i] = int(v[i])

        except ValueError:
            n[i] = 0

    return n


import matplotlib.pyplot as plt
import numpy as np


fig = plt.figure()
ax = fig.add_subplot(111)

li, = ax.plot(range(BINS))
plt.axis([0, BINS, 0, 250])

fig.canvas.draw()
plt.show(block=False)


while True:
    try:
        y = acquire_data()
        print(y)
        li.set_ydata(y)
        fig.canvas.draw()

    except KeyboardInterrupt:
        break