[RK3288][Android6.0] 调试笔记 --- 电池电量一直显示100%

来源：互联网发布：淘宝客服每天接待量编辑：程序博客网时间：2024/06/15 04:37

Platform: Rockchip
OS: Android 6.0
Kernel: 3.10.92

之前文章[RK3288][Android6.0] 调试笔记 — 伪电池驱动添加阐述了如何添加一个假的电池驱动，
测试发现Setting里的电池电量一直是100%
这里写图片描述

跟踪发现Android6.0相比之前的Android4.4会判断Charger是否存在，不存在就认为设备不具备充电能力并且设定当前电量是100%
解决方法：

kris@:~/rk3288/system/core/healthd$ g df 6446f0e6bfabeee8cbe8b233bf7bf87ad7b55665 727c2d4ab5c4b50555b8c64d1b2a61a342e4360c diff --git a/healthd/BatteryMonitor.cpp b/healthd/BatteryMonitor.cppindex 07e7a18..396dfef 100644--- a/healthd/BatteryMonitor.cpp+++ b/healthd/BatteryMonitor.cpp@@ -555,18 +555,12 @@ void BatteryMonitor::init(struct healthd_config *hc) {     // This indicates that there is no charger driver registered.     // Typically the case for devices which do not have a battery and     // and are always plugged into AC mains.--/*Kris, 20170728, we don't have any charger. { */-#if 0     if (!mChargerNames.size()) {         KLOG_ERROR(LOG_TAG, "No charger supplies found\n");         mBatteryFixedCapacity = ALWAYS_PLUGGED_CAPACITY;         mBatteryFixedTemperature = FAKE_BATTERY_TEMPERATURE;         mAlwaysPluggedDevice = true;     }-#endif-/*Kris, 20170728, we don't have any charger. } */-     if (!mBatteryDevicePresent) {         KLOG_WARNING(LOG_TAG, "No battery devices found\n");         hc->periodic_chores_interval_fast = -1;

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