Package io.heraldprox.herald.sensor.ble

Class BLETimer

java.lang.Object

io.heraldprox.herald.sensor.ble.BLETimer

public class BLETimer
extends java.lang.Object

Steady one second timer for controlling BLE operations. Having a reliable timer for starting and stopping scans is fundamental for reliable detection and tracking. Methods that have been tested and failed included : 1. Handler.postDelayed loop backed by MainLooper - Actual delay time can drift to 10+ minutes for a 4 second request. 2. Handler.postDelayed loop backed by dedicated looper backed by dedicated HandlerThread - Slightly better than option (1) but actual delay time can still drift to several minutes for a 4 second request. 3. Timer scheduled task loop - Timer can drift

Test impact of power management by ...

1. Run app on device 2. Keep one device connected via USB only 3. Put app in background mode and lock device 4. Go to terminal 5. cd ~/Library/Android/sdk/platform-tools

Test DOZE mode 1. ./adb shell dumpsys battery unplug 2. Expect "powerSource=battery" on log 3. ./adb shell dumpsys deviceidle force-idle 4. Expect "idle=true" on log

Exit DOZE mode 1. ./adb shell dumpsys deviceidle unforce 2. ./adb shell dumpsys battery reset 3. Expect "idle=false" and "powerSource=usb/ac" on log

Test APP STANDBY mode 1. ./adb shell dumpsys battery unplug 2. Expect "powerSource=battery" 3. ./adb shell am set-inactive io.heraldprox.herald true

Exit APP STANDBY mode 1. ./adb shell am set-inactive io.heraldprox.herald false 2. ./adb shell am get-inactive io.heraldprox.herald 3. Expect "idle=false" on terminal 4. ./adb shell dumpsys battery reset 5. Expect "powerSource=usb/ac" on log

Constructor Summary

Constructors

Constructor	Description
BLETimer(android.content.Context context)

Method Summary

Modifier and Type	Method	Description
void	add(BLETimerDelegate delegate)
protected void	finalize()

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BLETimer

public BLETimer(@NonNull
                android.content.Context context)

Method Detail

finalize

protected void finalize()

Overrides:

finalize in class java.lang.Object

add

public void add(@NonNull
                BLETimerDelegate delegate)