系统版本：RK3288 android 5.1 （与参考的变量和宏有点区别）
设备没有电池，在进行Fota升级时，提示电量不能低于30%，外接电源，可是读出来的电量是0%，无法进行升级，只能手动设置电池电量。
$ adb shell dumpsys battery //通过adb查询电池信息
Current Battery Service state:
AC powered: false
USB powered: false
Wireless powered: false
status: 1
health: 1
present: true
level: 0 //电池电量
scale: 100
voltage: 0
temperature: 0
technology:
diff --git a/system/core/healthd/BatteryMonitor.cpp b/system/core/healthd/BatteryMonitor.cpp
old mode 100644
new mode 100755
index d317b28..6b37dee
--- a/system/core/healthd/BatteryMonitor.cpp
+++ b/system/core/healthd/BatteryMonitor.cpp
@@ -35,7 +35,7 @@
#define POWER_SUPPLY_SUBSYSTEM "power_supply"
#define POWER_SUPPLY_SYSFS_PATH "/sys/class/" POWER_SUPPLY_SUBSYSTEM
-#define FAKE_BATTERY_CAPACITY 42
+#define FAKE_BATTERY_CAPACITY 100
#define FAKE_BATTERY_TEMPERATURE 424
namespace android {
@@ -513,8 +513,14 @@ void BatteryMonitor::init(struct healthd_config *hc) {
closedir(dir);
}
- if (!mChargerNames.size())
+ if (!mChargerNames.size()) {
KLOG_ERROR(LOG_TAG, "No charger supplies found\n");
+
+ mBatteryFixedCapacity = FAKE_BATTERY_CAPACITY; //电量 level
+ mBatteryFixedTemperature = FAKE_BATTERY_TEMPERATURE; //温度 temperature
+ mBatteryDevicePresent = true;
+
+ }
if (!mBatteryDevicePresent) {
KLOG_WARNING(LOG_TAG, "No battery devices found\n");
hc->periodic_chores_interval_fast = -1;
$ adb shell dumpsys battery
Current Battery Service state:
AC powered: false
USB powered: false
Wireless powered: false
status: 1
health: 1
present: true
level: 100 //电池电量
scale: 100
voltage: 0
temperature: 424
technology:
