#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys, time, os
import platform

if platform.system().strip() == 'Windows':
  pass
else:
  import portio


import ctypes
from numpy import *
from pylab import *
from time import *


# ------------------------------------------------------------------------------------
# Basic I/O routines - These can be used in the Python shell.

def Inp(addr) :
  if platform.system().strip() == 'Windows':
    return ctypes.windll.inpout32.Inp32(addr) # Read byte from io address addr
  else:
    # check for root privileges
    if os.getuid():
      print('You need to be root! Exiting.')
      sys.exit()

    # acquire permission for I/O on lp0
    status = portio.ioperm(addr, 1, 1)
    if status:
      print('ioperm:',os.strerror(status))
      sys.exit()
    return portio.inb(addr)

def Out(addr, data) :
  if platform.system().strip() == 'Windows':
    ctypes.windll.inpout32.Out32(addr, data) # Send byte to io address addr
  else:
    # check for root privileges
    if os.getuid():
      print('You need to be root! Exiting.')
      sys.exit()

    # acquire permission for I/O on lp0
    status = portio.ioperm(addr, 1, 1)
    if status:
      print('ioperm:',os.strerror(status))
      sys.exit()
    portio.outb(data,addr)

def cmdMAX187():
  """
  """
#************************************************
  # ici définition de l'adresse du port de communication
  AdresseDeBase = 0x3BC
  LecturePort = AdresseDeBase + 1

  # cs haut (9//)
  Out(AdresseDeBase, 128)

  # début de conversion
  Out( AdresseDeBase, 0)

  # attente fin de conversion
  print "attente fin de conversion"

  while((Inp(LecturePort) and 128) == 0):
    pass

  # forçage avant transmission des datas

  # Forçage horloge haut

  Out( AdresseDeBase, 1)

  # Forçage horloge bas

  Out( AdresseDeBase, 0)

  # transmission des datas

  signalsismo = 0

  # 12 tops d'horloge
  print "12 tops d'horloge"

  for Horloge in xrange(11,0,-1):
    # top = niveau haut

    Out( AdresseDeBase, 1)

    ValeurVraie = (not (Inp(LecturePort)) and 128)

    # inversion pour atteindre la valeur vraie

    if (ValeurVraie != 0):
      signalsismo = (2 ** Horloge) + signalsismo

    # tops bas horloge

    Out( AdresseDeBase, 0)

  print "signalsismo",signalsismo

# Execute this code only if this module is run as a Python program.

if __name__ == '__main__' :
  cmdMAX187()