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      1 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
      2 # Use of this source code is governed by a BSD-style license that can be
      3 # found in the LICENSE file.
      4 
      5 import logging
      6 import re
      7 import socket
      8 import time
      9 
     10 from autotest_lib.client.bin import test
     11 from autotest_lib.client.common_lib import error, utils
     12 
     13 
     14 class hardware_GPS(test.test):
     15     version = 1
     16 
     17     def run_once(self):
     18         # Default gpsd port. Can be changed in /etc/init/gpsd.conf.
     19         gpsd_port = 2947
     20         match = False
     21         gpsd_started = False
     22 
     23         gpsd_status = utils.system_output('initctl status gpsd')
     24         if not 'start/running' in gpsd_status:
     25             utils.system('initctl start gpsd')
     26             gpsd_started = True
     27             for _ in range(10):
     28                 try:
     29                     c = socket.create_connection(('localhost', gpsd_port))
     30                 except socket.error:
     31                     time.sleep(1)
     32                     continue
     33                 c.close()
     34                 break
     35 
     36         gpspipe = utils.system_output(
     37             'gpspipe -r -n 10 localhost:%d' % gpsd_port, timeout=60)
     38         logging.debug(gpspipe)
     39         for line in gpspipe.split('\n'):
     40             line = line.strip()
     41 
     42             # For now - just look for any GPS sentence in the output.
     43             match = re.search(
     44                 r'^\$GP(BOD|BWC|GGA|GLL|GSA|GSV|HDT|R00|RMA|RMB|' +
     45                 r'RMC|RTE|STN|TRF|VBW|VTG|WPL|XTE|ZDA)',
     46                 line)
     47 
     48             if match:
     49                 break
     50 
     51         if gpsd_started:
     52             # If it was us who started it - shut it back down.
     53             utils.system('initctl stop gpsd')
     54 
     55         if not match:
     56             raise error.TestFail('Unable to find GPS device')
     57