| # Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging |
| |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.server.cros.faft.firmware_test import FirmwareTest |
| |
| |
| class firmware_ECAdc(FirmwareTest): |
| """ |
| Servo based EC ADC test. |
| """ |
| version = 1 |
| |
| # Repeat read count |
| READ_COUNT = 200 |
| |
| def _check_read(self): |
| """Read EC internal temperature by EC ADC. |
| |
| Raises: |
| error.TestFail: Raised when read fails. |
| """ |
| t = int(self.ec.send_command_get_output("temps", |
| ["ECInternal\s+: (\d+) K"])[0][1]) |
| if t < 273 or t > 373: |
| raise error.TestFail("Abnormal EC temperature %d K" % t) |
| |
| def run_once(self): |
| """Runs a single iteration of the test.""" |
| if not self.check_ec_capability(['adc_ectemp']): |
| raise error.TestNAError("Nothing needs to be tested on this device") |
| logging.info("Reading EC internal temperature for %d times.", |
| self.READ_COUNT) |
| for _ in xrange(self.READ_COUNT): |
| self._check_read() |
