diff options
| -rwxr-xr-x | umtsmodem.py | 143 |
1 files changed, 129 insertions, 14 deletions
diff --git a/umtsmodem.py b/umtsmodem.py index 59280e4..b700584 100755 --- a/umtsmodem.py +++ b/umtsmodem.py @@ -1,18 +1,35 @@ #!/usr/bin/python import serial +import time import sys import re modem_device = "/dev/ttyACM1" apn = "web.vodafone.de" +# TODO: AT*EGNCI (gsm-only) +# AT*EWNCI (umts-only) +# AT+COPS (operator select) +# +# *EGNCI: "26202","026E","00000000",6,50,24 +# +# *EWNCI: +# UARFCN,PSC,RSCP,ECNO,PathLoss +# 10588 ,287,36 ,14 ,158 +# +# UARFCN = Channel, RSCP = RSSI, CID = PSC +# RNCid = CID_lang / 65536 (sometimes(?) == LAC) +# CID = CID_lang % 65536 +# def send_command(modem, cmd, text): modem.write(cmd) - print text + ": ", + if text != None: + print text + ": ", response = modem.readlines() - print ('ERROR\r\n' in response and "Error" or "OK") + if text != None: + print ('ERROR\r\n' in response and "Error" or "OK") return response @@ -29,6 +46,98 @@ def get_pin_state(modem): return False +# determine whether there is a gsm or umts connection +# -1: unknown +# 0: gsm +# 2: umts +def connection_mode(modem): + response = send_command(modem, 'AT+COPS?\r', None) + for line in response: + if line.startswith('+COPS: '): + values = line[7:].strip().split(',') + if len(values) == 1: + return -1 + else: + return int(values[-1]) + return -1 + + +def cell_info(modem): + cells = set() + + # get GSM cell information + send_command(modem, 'AT+CFUN=5\r', None) + while connection_mode(modem) != 0: + time.sleep(1) + + # get connected station + 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) + cid = int(results[3].strip('"'), 16) + break + + modem.write('AT*EHNET=2\r') + response = modem.readlines() + for line in response: + if line.startswith('*EHNET: '): + mcc = int(line[8:].rstrip().strip('"')[:3]) + mnc = int(line[8:].rstrip().strip('"')[3:]) + cells.add((mcc, mnc, lac, cid)) + + + # check stations until all are known (i.e. no '???' in response) + retry = True + while retry: + retry = False + response = send_command(modem, 'AT*EGNCI\r', None) + if 'ERROR\r\n' in response: + print "error" + retry = True + time.sleep(1) + continue + + for line in response: + if line.startswith('*EGNCI: '): + values = line[8:].rstrip().split(',') + try: + mcc = int(values[0].strip('"')[:3]) + mnc = int(values[0].strip('"')[3:]) + lac = int(values[1].strip('"'), 16) + cid = int(values[2].strip('"'), 16) + if cid == 0: + continue + cells.add((mcc, mnc, lac, cid)) + except: + retry = True + print "retrying" + time.sleep(2) + break + + for (mcc, mnc, lac, cid) in cells: + print "MCC: " + str(mcc) + ", MNC: " + str(mnc) + ", LAC: " + str(lac) + ", CellID: " + str(cid) + + +# # get UMTS cell information +# send_command(modem, 'AT+CFUN=6\r', None) +# time.sleep(10) +# response = send_command(modem, 'AT*EWNCI\r', None) +# for line in response: +# if line.startswith('*EWNCI: '): +# print line.rstrip() + +# # switch back to default mode +# send_command(modem, 'AT+CFUN=1\r', None) + + def print_state(modem): modem.timeout = 0.1 modem.write('AT+CSQ\r') @@ -39,13 +148,15 @@ def print_state(modem): print "Signal: " + signal + "/31" break - modem.write('AT+CIMI\r') + mcc, mnc, lac, cid = -1, -1, -1, -1 + modem.write('AT*EHNET=2\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] + if line.startswith('*EHNET: '): + mcc = line[8:].rstrip().strip('"')[:3] + mnc = line[8:].rstrip().strip('"')[3:] break + modem.write('AT+CREG=2\r') modem.readlines() modem.write('AT+CREG?\r') @@ -57,12 +168,9 @@ def print_state(modem): 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 + cid = int(results[3].strip('"'), 16) % 65536 # last 2 bytes for umts break - print "MCC: " + mcc + ", MNC: " + mnc + ", LAC: " + str(lac) + ", CellID: " + str(cellid) + print "MCC: " + str(mcc) + ", MNC: " + str(mnc) + ", LAC: " + str(lac) + ", CellID: " + str(cid) @@ -87,7 +195,13 @@ def stop_modem(modem): def show_usage(): - print "Usage: " + sys.argv[0] + " [start|stop|connect|disconnect|state]" + print "Usage: " + sys.argv[0] + " <command>" + print "\tstart: switch on modem and unlock sim" + print "\tstop: switch modem to powersave state" + print "\tconnect: connect to internet" + print "\tdisconnect: disconnect from internet" + print "\tstate: show signal/base station info" + print "\tcellinfo: show info about all received cells" if len(sys.argv) != 2: show_usage() @@ -108,8 +222,9 @@ elif sys.argv[1] == "disconnect": stop_modem(modem) elif sys.argv[1] == "state": print_state(modem) -elif sys.argv[1] == "cells": - print_cells(modem) +elif sys.argv[1] == "cellinfo": +# start_modem(modem) + cell_info(modem) else: show_usage() |