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#!/usr/bin/python
import serial
import sys
import re
modem_device = "/dev/ttyACM1"
apn = "web.vodafone.de"
def send_command(modem, cmd, text):
modem.write(cmd)
print text + ": ",
response = modem.readlines()
print ('ERROR\r\n' in response and "Error" or "OK")
return response
def get_pin_state(modem):
modem.write('AT+CPIN?\r')
response = modem.readlines()
if "+CPIN: SIM PIN\r\n" in response:
return False
elif "+CPIN: READY\r\n" in response:
return True
else:
print "[get_pin_state] Unknown response",
print response
return False
def print_state(modem):
modem.timeout = 0.1
modem.write('AT+CSQ\r')
response = modem.readlines()
for line in response:
if line.startswith('+CSQ: '):
signal = line.rstrip()[6:].split(',')[0]
print "Signal: " + signal + "/31"
break
modem.write('AT+CIMI\r')
response = modem.readlines()
for line in response:
if re.match(r'^\d+$', line.strip()): # check if line is a number (IMSI)
mcc = line[:3]
mnc = line[3:5]
break
modem.write('AT+CREG=2\r')
modem.readlines()
modem.write('AT+CREG?\r')
response = modem.readlines()
modem.write('AT+CREG=0\r')
modem.readlines()
for line in response:
if line.startswith('+CREG: '):
results = line.rstrip()[7:].split(',')
if len(results) == 4:
lac = int(results[2].strip('"'), 16)
cellid = int(results[3].strip('"'), 16)
else:
lac = -1
cellid = -1
break
print "MCC: " + mcc + ", MNC: " + mnc + ", LAC: " + str(lac) + ", CellID: " + str(cellid)
def start_modem(modem):
if not get_pin_state(modem):
pin = raw_input("Please enter PIN: ")
send_command(modem, 'AT+CPIN="' + pin + '"\r', "Sending PIN")
send_command(modem, 'AT+CFUN=1\r', "Starting modem")
def connect(modem):
send_command(modem, 'AT+CGDCONT=1,"IP","' + apn + '"\r', "Setting up")
send_command(modem, 'AT*ENAP=1,1\r', "Connecting")
def disconnect(modem):
send_command(modem, 'AT*ENAP=0\r', "Disconnecting")
def stop_modem(modem):
send_command(modem, 'AT+CFUN=4\r', "Stopping")
def show_usage():
print "Usage: " + sys.argv[0] + " [start|stop|connect|disconnect|state]"
if len(sys.argv) != 2:
show_usage()
sys.exit(0)
modem = serial.Serial(modem_device, timeout=0.5)
modem.readlines()
if sys.argv[1] == "start":
start_modem(modem)
elif sys.argv[1] == "stop":
stop_modem(modem)
elif sys.argv[1] == "connect":
start_modem(modem)
connect(modem)
elif sys.argv[1] == "disconnect":
disconnect(modem)
stop_modem(modem)
elif sys.argv[1] == "state":
print_state(modem)
elif sys.argv[1] == "cells":
print_cells(modem)
else:
show_usage()
modem.close()
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