1 # Copyright (c) 2012 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 7 from autotest_lib.client.common_lib import error 8 from autotest_lib.server.cros.faft.firmware_test import FirmwareTest 9 10 11 class firmware_ECAdc(FirmwareTest): 12 """ 13 Servo based EC ADC test. 14 """ 15 version = 1 16 17 # Repeat read count 18 READ_COUNT = 200 19 20 def _check_read(self): 21 """Read EC internal temperature by EC ADC. 22 23 Raises: 24 error.TestFail: Raised when read fails. 25 """ 26 t = int(self.ec.send_command_get_output("temps", 27 ["ECInternal\s+: (\d+) K"])[0][1]) 28 if t < 273 or t > 373: 29 raise error.TestFail("Abnormal EC temperature %d K" % t) 30 31 def run_once(self): 32 if not self.check_ec_capability(['adc_ectemp']): 33 raise error.TestNAError("Nothing needs to be tested on this device") 34 logging.info("Reading EC internal temperature for %d times.", 35 self.READ_COUNT) 36 for _ in xrange(self.READ_COUNT): 37 self._check_read() 38
