| # Copyright (c) 2010 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, time |
| from autotest_lib.client.bin import test |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.cros import power_status, power_utils, service_stopper |
| |
| |
| class power_BatteryCharge(test.test): |
| version = 1 |
| |
| def initialize(self): |
| self.status = power_status.get_status() |
| |
| if not self.on_ac(): |
| raise error.TestNAError( |
| 'This test needs to be run with the AC power online') |
| |
| |
| def run_once(self, max_run_time=180, percent_charge_to_add=1, |
| percent_initial_charge_max=None, |
| percent_target_charge=None, |
| use_design_charge_capacity=True): |
| |
| """ |
| max_run_time: maximum time the test will run for |
| percent_charge_to_add: percentage of the charge capacity charge to |
| add. The target charge will be capped at the charge capacity. |
| percent_initial_charge_max: maxium allowed initial charge. |
| use_design_charge_capacity: If set, use charge_full_design rather than |
| charge_full for calculations. charge_full represents |
| wear-state of battery, vs charge_full_design representing |
| ideal design state. |
| """ |
| |
| time_to_sleep = 60 |
| self._services = service_stopper.ServiceStopper( |
| service_stopper.ServiceStopper.POWER_DRAW_SERVICES + ['ui']) |
| self._services.stop_services() |
| |
| self._backlight = power_utils.Backlight() |
| self._backlight.set_percent(0) |
| |
| self.remaining_time = self.max_run_time = max_run_time |
| |
| self.charge_full_design = self.status.battery[0].charge_full_design |
| self.charge_full = self.status.battery[0].charge_full |
| if use_design_charge_capacity: |
| self.charge_capacity = self.charge_full_design |
| else: |
| self.charge_capacity = self.charge_full |
| |
| self.initial_charge = self.status.battery[0].charge_now |
| percent_initial_charge = self.initial_charge * 100 / \ |
| self.charge_capacity |
| if percent_initial_charge_max and percent_initial_charge > \ |
| percent_initial_charge_max: |
| raise error.TestError('Initial charge (%f) higher than max (%f)' |
| % (percent_initial_charge, percent_initial_charge_max)) |
| |
| current_charge = self.initial_charge |
| if percent_target_charge is None: |
| charge_to_add = self.charge_capacity * \ |
| float(percent_charge_to_add) / 100 |
| target_charge = current_charge + charge_to_add |
| else: |
| target_charge = self.charge_capacity * \ |
| float(percent_target_charge) / 100 |
| |
| # trim target_charge if it exceeds charge capacity |
| if target_charge > self.charge_capacity: |
| target_charge = self.charge_capacity |
| |
| logging.info('max_run_time: %d' % self.max_run_time) |
| logging.info('initial_charge: %f' % self.initial_charge) |
| logging.info('target_charge: %f' % target_charge) |
| |
| while self.remaining_time and current_charge < target_charge: |
| if time_to_sleep > self.remaining_time: |
| time_to_sleep = self.remaining_time |
| self.remaining_time -= time_to_sleep |
| |
| time.sleep(time_to_sleep) |
| |
| self.status.refresh() |
| if not self.on_ac(): |
| raise error.TestError( |
| 'This test needs to be run with the AC power online') |
| |
| new_charge = self.status.battery[0].charge_now |
| logging.info('time_to_sleep: %d' % time_to_sleep) |
| logging.info('charge_added: %f' % (new_charge - current_charge)) |
| |
| current_charge = new_charge |
| logging.info('current_charge: %f' % current_charge) |
| |
| if self.status.battery[0].status == 'Full': |
| logging.info('Battery full, aborting!') |
| break |
| |
| |
| def postprocess_iteration(self): |
| keyvals = {} |
| keyvals['ah_charge_full'] = self.charge_full |
| keyvals['ah_charge_full_design'] = self.charge_full_design |
| keyvals['ah_charge_capacity'] = self.charge_capacity |
| keyvals['ah_initial_charge'] = self.initial_charge |
| keyvals['ah_final_charge'] = self.status.battery[0].charge_now |
| keyvals['s_time_taken'] = self.max_run_time - self.remaining_time |
| keyvals['percent_initial_charge'] = self.initial_charge * 100 / \ |
| keyvals['ah_charge_capacity'] |
| keyvals['percent_final_charge'] = keyvals['ah_final_charge'] * 100 / \ |
| keyvals['ah_charge_capacity'] |
| |
| percent_charge_added = keyvals['percent_final_charge'] - \ |
| keyvals['percent_initial_charge'] |
| # Conditionally write charge current keyval only when the amount of |
| # charge added is > 50% to remove samples when test is run but battery |
| # is already mostly full. Otherwise current will be ~0 and not |
| # meaningful. |
| if percent_charge_added > 50: |
| hrs_charging = keyvals['s_time_taken'] / 3600. |
| keyvals['a_avg50_charge_current'] = \ |
| (keyvals['ah_final_charge'] - self.initial_charge) / \ |
| hrs_charging |
| |
| self.write_perf_keyval(keyvals) |
| |
| |
| def cleanup(self): |
| if hasattr(self, '_services') and self._services: |
| self._services.restore_services() |
| if hasattr(self, '_backlight') and self._backlight: |
| self._backlight.restore() |
| |
| |
| def on_ac(self): |
| return self.status.linepower[0].online |
