def setUp(self):
print "setUp - start"
GaiaTestCase.setUp(self)
print "setUp - about to lock"
# Make sure the lock screen is up
self.device.lock()
# Make sure the screen brightness is full on, with auto turned off
# Volume level adjust to 9 and turn on airplane mode
self.data_layer.set_setting("screen.automatic-brightness", False)
self.data_layer.set_setting("screen.brightness", 1.0)
self.data_layer.set_setting("audio.volume.content", 9)
self.data_layer.set_setting("airplaneMode.enabled", True)
# Make sure USB charging is turned off
cmd = []
cmd.append("adb")
cmd.append("shell")
cmd.append("echo 0 > /sys/class/power_supply/battery/charging_enabled")
subprocess.Popen(cmd)
# Set up the ammeter
self.ammeterFields = ('current', 'voltage', 'time')
serialPortName = None #we want powertool to figure out the port...
self.ammeter = MozillaAmmeter(serialPortName, False)
# Grab a sample, and calculate the timer offset from ammeter time to wall clock time
sample = self.ammeter.getSample(self.ammeterFields)
sampleTimeAfterEpochOffset = time.time()
firstSampleMsCounter = sample['time'].value
self.sampleTimeEpochOffset = int(
sampleTimeAfterEpochOffset * 1000.0) - firstSampleMsCounter
print "setUp - done"
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from powertool.mozilla import MozillaAmmeter
import time
import json
ammeterFields = ('current','voltage','time')
serialPortName = "/dev/ttyACM0"
ammeter = MozillaAmmeter(serialPortName, False)
sampleLog = []
stopTime = time.time() + 25
done = False
total = 0.0
count = 0
while not done:
sample = ammeter.getSample(ammeterFields)
if sample is not None:
sampleObj = {}
sampleObj['current'] = sample['current'].value
sampleObj['voltage'] = sample['voltage'].value
sampleObj['time'] = sample['time'].value
sampleLog.append(sampleObj)
total = total + sampleObj['current']
count = count + 1
if count % 1000 == 0:
