#!/usr/bin/env python3

import csv
import numpy as np
import os
import struct
import sys
import tarfile
import matplotlib.pyplot as plt
from dfatool.dfatool import MIMOSA
from dfatool.utils import running_mean

voltage = float(sys.argv[1])
shunt = float(sys.argv[2])
mimfile = sys.argv[3]

mim = MIMOSA(voltage, shunt)

charges, triggers = mim.load_file(mimfile)
#charges = charges[2000000:3000000]

currents = running_mean(mim.charge_to_current_nocal(charges), 10) * 1e-6
xr = np.arange(len(currents)) * 1e-5
threshold = 1e-5
grad = np.gradient(currents, 2)
tp = np.abs(grad) > threshold
plt.plot( xr, currents, "r-")
plt.plot( xr, grad, "y-")
plt.plot( xr[tp], grad[tp], "bo")
plt.xlabel('Zeit [s]')
plt.ylabel('Strom [A]')
plt.grid(True)
plt.show()