import numpy as np
from math import *
import matplotlib.pyplot as plt

fname = 'ADCdata.txt'

fs = 5000.0

print "fs = %f" % (fs)

Ts = 1/fs

fO = open(fname)

ln = fO.readline()

arr = np.array([])

while not(ln==''):
    tab1 = ln.find('\t') # elso tabulator megtalalasa
    tab2 = ln.find('\t', tab1+1) # masodik tabulator megtalalasa
    tab3tab = ln.find('\t', tab2+1) # ha sima tabbal van elvalasztva
    tab3par = ln.find('(') # ha zarojellel meg van adva a tipus
    if (tab3par<0):
        tab3par = tab3tab
    tab3 = min(tab3tab, tab3par)
    numberRaw = ln[tab2+1:tab3] # a nyers szam
    if len(numberRaw)>2:
        if numberRaw[0:2]=='0x':
            numberRaw = int(numberRaw,16) # ha hexa
    arr = np.append(arr, float(numberRaw))
    ln = fO.readline() # read a new line

N = len(arr)
t = np.array(range(N)) * Ts * 1e3

plt.plot(t, arr,'.-')
plt.grid(True)
plt.xlabel('t [ms]')
plt.ylabel('x(t)')
plt.show()