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trkpt
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Describe exact power management state transitions in readme.

master
voussoir 2023-04-02 17:14:45 -07:00
parent 04d27ab984
commit 01a313a69c
5 changed files with 50 additions and 27 deletions
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26
README.md
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@ -19,11 +19,31 @@ The goal of this fork is to make 24/7 recording easier. I want to be able to run
## Power management
When you are near a homepoint, trkpt will slow down the GPS polling frequency to reduce power consumption. When trkpt detects movement from the device's accelerometers, or when the GPS detects you are away from the homepoint, it will wake back up to full power.
trkpt has three states of power management. The states transition like this:
If the GPS is completely unable to receive a fix because you are indoors, underground, or trapped in a Faraday cage, trkpt will turn it off after a few minutes. Without any fix, we can't even tell if we're near a homepoint, and the GPS burns a lot of energy trying. Again, the motion sensor will wake it back up to full power.
1. **FULL POWER**: receives location updates as fast as Android provides them.
When you are away from a homepoint, and the GPS is not struggling, trkpt will always run the GPS at full power.
Stay near homepoint for a few minutes → Sleep
Unable to receive fix for several minutes and not charging → Dead
2. **SLEEPING**: receives location updates at a slower pace.
Motion sensors → Full power
Location leaves homepoint → Full power (presumably motion sensors will trigger, but just in case)
Unplugged from charger → Full power (maybe you are getting ready to depart)
Unable to receive fix for several minutes and not charging → Dead (time is doubled to accommodate slower sleeping pace)
3. **DEAD**: disables location updates.
Motion sensors → Full power
Plugged in to charger → Full power
Although saving battery power is important, capturing trackpoints is the #1 priority. I'd rather have a few too many wakeups than too few.
If your device doesn't support the motion sensors used here, then trkpt will always run at full power. It will not sleep or kill the GPS. Maybe we can find another solution to improve battery performance for devices in this scenario.

2
app/src/main/java/net/voussoir/trkpt/Keys.kt
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@ -70,7 +70,7 @@ object Keys {
const val STATE_TRACKING_ACTIVE: Int = 1
const val LOCATION_INTERVAL_FULL_POWER: Long = 0
const val LOCATION_INTERVAL_SLEEP: Long = ONE_MINUTE_IN_MILLISECONDS
const val LOCATION_INTERVAL_GIVE_UP: Long = -1
const val LOCATION_INTERVAL_DEAD: Long = -1
const val STATE_THEME_FOLLOW_SYSTEM: String = "stateFollowSystem"
const val STATE_THEME_LIGHT_MODE: String = "stateLightMode"
const val STATE_THEME_DARK_MODE: String = "stateDarkMode"

2
app/src/main/java/net/voussoir/trkpt/MapFragment.kt
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@ -418,7 +418,7 @@ class MapFragment : Fragment()
newMarker = ContextCompat.getDrawable(requireContext(), R.drawable.ic_skull_24dp)!!
description = "No location listeners are enabled"
}
else if (tracker.trackingState == Keys.STATE_TRACKING_ACTIVE && tracker.location_interval == Keys.LOCATION_INTERVAL_GIVE_UP)
else if (tracker.trackingState == Keys.STATE_TRACKING_ACTIVE && tracker.location_interval == Keys.LOCATION_INTERVAL_DEAD)
{
fillcolor = Color.argb(64, 0, 0, 0)
newMarker = ContextCompat.getDrawable(requireContext(), R.drawable.ic_skull_24dp)!!

42
app/src/main/java/net/voussoir/trkpt/TrackerService.kt
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@ -59,7 +59,7 @@ class TrackerService: Service()
var arrived_at_home: Long = 0
var location_interval: Long = 0
val TIME_UNTIL_SLEEP: Long = 2 * Keys.ONE_MINUTE_IN_MILLISECONDS
val TIME_UNTIL_GIVE_UP: Long = 3 * Keys.ONE_MINUTE_IN_MILLISECONDS
val TIME_UNTIL_DEAD: Long = 3 * Keys.ONE_MINUTE_IN_MILLISECONDS
val WATCHDOG_INTERVAL: Long = 30 * Keys.ONE_SECOND_IN_MILLISECONDS
private val RECENT_TRKPT_COUNT = 3600
private val DISPLACEMENT_LOCATION_COUNT = 5
@ -178,7 +178,7 @@ class TrackerService: Service()
location_interval = interval
var gps_added = false
var network_added = false
if (use_gps_location && interval != Keys.LOCATION_INTERVAL_GIVE_UP)
if (use_gps_location && interval != Keys.LOCATION_INTERVAL_DEAD)
{
gps_added = addGpsLocationListener(interval)
}
@ -186,7 +186,7 @@ class TrackerService: Service()
{
removeGpsLocationListener()
}
if (use_network_location && interval != Keys.LOCATION_INTERVAL_GIVE_UP)
if (use_network_location && interval != Keys.LOCATION_INTERVAL_DEAD)
{
network_added = addNetworkLocationListener(interval)
}
@ -206,7 +206,7 @@ class TrackerService: Service()
else
{
listeners_enabled_at = 0
location_interval = Keys.LOCATION_INTERVAL_GIVE_UP
location_interval = Keys.LOCATION_INTERVAL_DEAD
}
displayNotification()
}
@ -374,9 +374,9 @@ class TrackerService: Service()
notification_builder.setContentTitle("${timestamp} (sleeping)")
notification_builder.setSmallIcon(R.drawable.ic_sleep_24dp)
}
else if (location_interval == Keys.LOCATION_INTERVAL_GIVE_UP)
else if (location_interval == Keys.LOCATION_INTERVAL_DEAD)
{
notification_builder.setContentTitle("${timestamp} (deadzone)")
notification_builder.setContentTitle("${timestamp} (dead)")
notification_builder.setSmallIcon(R.drawable.ic_skull_24dp)
}
else
@ -449,7 +449,7 @@ class TrackerService: Service()
override fun onBind(p0: Intent?): IBinder
{
Log.i("VOUSSOIR", "TrackerService.onBind")
if (listeners_enabled_at == 0L && location_interval != Keys.LOCATION_INTERVAL_GIVE_UP)
if (listeners_enabled_at == 0L && location_interval != Keys.LOCATION_INTERVAL_DEAD)
{
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_FULL_POWER)
}
@ -462,7 +462,7 @@ class TrackerService: Service()
override fun onRebind(intent: Intent?)
{
Log.i("VOUSSOIR", "TrackerService.onRebind")
if (listeners_enabled_at == 0L && location_interval != Keys.LOCATION_INTERVAL_GIVE_UP)
if (listeners_enabled_at == 0L && location_interval != Keys.LOCATION_INTERVAL_DEAD)
{
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_FULL_POWER)
}
@ -479,7 +479,7 @@ class TrackerService: Service()
// stop receiving location updates - if not tracking
if (trackingState != Keys.STATE_TRACKING_ACTIVE)
{
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_GIVE_UP)
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_DEAD)
}
// ensures onRebind is called
return true
@ -530,7 +530,7 @@ class TrackerService: Service()
if (trackingState == Keys.STATE_TRACKING_ACTIVE && location_interval != Keys.LOCATION_INTERVAL_FULL_POWER)
{
vibrator.vibrate(100)
reset_location_listeners(Keys.LOCATION_INTERVAL_FULL_POWER)
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_FULL_POWER)
}
sensor_manager.requestTriggerSensor(this, significant_motion_sensor)
}
@ -551,7 +551,7 @@ class TrackerService: Service()
{
// beeper.startTone(ToneGenerator.TONE_PROP_ACK, 150)
vibrator.vibrate(100)
reset_location_listeners(Keys.LOCATION_INTERVAL_FULL_POWER)
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_FULL_POWER)
}
}
@ -571,15 +571,21 @@ class TrackerService: Service()
{
Log.i("VOUSSOIR", "Power connected")
device_is_charging = true
if (location_interval == Keys.LOCATION_INTERVAL_GIVE_UP)
if (location_interval == Keys.LOCATION_INTERVAL_DEAD)
{
reset_location_listeners(Keys.LOCATION_INTERVAL_FULL_POWER)
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_FULL_POWER)
}
}
else if (intent.action == Intent.ACTION_POWER_DISCONNECTED)
{
Log.i("VOUSSOIR", "Power disconnected")
device_is_charging = false
// If the user has just unplugged their device, maybe they're getting ready
// to go out.
if (location_interval == Keys.LOCATION_INTERVAL_SLEEP)
{
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_FULL_POWER)
}
}
}
}
@ -630,7 +636,7 @@ class TrackerService: Service()
stopForeground(STOP_FOREGROUND_REMOVE)
notificationManager.cancel(Keys.TRACKER_SERVICE_NOTIFICATION_ID) // this call was not necessary prior to Android 12
PreferencesHelper.unregisterPreferenceChangeListener(sharedPreferenceChangeListener)
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_GIVE_UP)
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_DEAD)
handler.removeCallbacks(background_watchdog)
unregisterReceiver(charging_broadcast_receiver)
}
@ -683,7 +689,7 @@ class TrackerService: Service()
allow_sleep = PreferencesHelper.loadAllowSleep()
if (! allow_sleep && location_interval != Keys.LOCATION_INTERVAL_FULL_POWER)
{
reset_location_listeners(Keys.LOCATION_INTERVAL_FULL_POWER)
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_FULL_POWER)
}
}
Keys.PREF_DEVICE_ID ->
@ -715,19 +721,19 @@ class TrackerService: Service()
val now = System.currentTimeMillis()
last_watchdog = now
val struggletime = if (location_interval == Keys.LOCATION_INTERVAL_SLEEP) (TIME_UNTIL_GIVE_UP * 2) else TIME_UNTIL_GIVE_UP
val struggletime = if (location_interval == Keys.LOCATION_INTERVAL_SLEEP) (TIME_UNTIL_DEAD * 2) else TIME_UNTIL_DEAD
if (
allow_sleep &&
has_motion_sensor &&
!device_is_charging &&
trackingState == Keys.STATE_TRACKING_ACTIVE &&
location_interval != Keys.LOCATION_INTERVAL_GIVE_UP &&
location_interval != Keys.LOCATION_INTERVAL_DEAD &&
(now - listeners_enabled_at) > struggletime &&
(now - currentBestLocation.time) > struggletime &&
(now - last_significant_motion) > struggletime
)
{
reset_location_listeners(Keys.LOCATION_INTERVAL_GIVE_UP)
reset_location_listeners(interval=Keys.LOCATION_INTERVAL_DEAD)
gave_up_at = now
}
}

5
app/src/main/java/net/voussoir/trkpt/helpers/PreferencesHelper.kt
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@ -75,13 +75,10 @@ object PreferencesHelper
}
fun loadTrackingState(): Int {
val state = sharedPreferences.getInt(Keys.PREF_TRACKING_STATE, Keys.STATE_TRACKING_STOPPED)
Log.i("VOUSSOIR", "PreferencesHelper.loadTrackingState ${state}")
return state
return sharedPreferences.getInt(Keys.PREF_TRACKING_STATE, Keys.STATE_TRACKING_STOPPED)
}
fun saveTrackingState(trackingState: Int) {
Log.i("VOUSSOIR", "PreferencesHelper.saveTrackingState ${trackingState}")
sharedPreferences.edit { putInt(Keys.PREF_TRACKING_STATE, trackingState) }
}