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Commit 3db03a5a authored by Todd Poynor's avatar Todd Poynor
Browse files

healthd: Set fixed battery level and temperature via properties 

setprop persist.sys.battery.capacity 77
setprop persist.sys.battery.temperature 123

and reboot to cause a fixed battery level of 77% and temperature of 12.3C
to be reported to Android.

Typically used on power evaluation boards without batteries connected.

Bug: 14839868
Change-Id: Ibae5e16429d05891cb0787d74a2fe93b07013699
parent acc13d7b

healthd/BatteryMonitor.cpp

+14 −2
Original line number Original line Diff line number Diff line
@@ -27,6 +27,7 @@ 
#include <unistd.h>

#include <unistd.h>

#include <batteryservice/BatteryService.h>

#include <batteryservice/BatteryService.h>

#include <cutils/klog.h>

#include <cutils/klog.h>

#include <cutils/properties.h>

#include <sys/types.h>

#include <sys/types.h>

#include <utils/Errors.h>

#include <utils/Errors.h>

#include <utils/String8.h>

#include <utils/String8.h>
@@ -184,10 +185,14 @@ bool BatteryMonitor::update(void) { 
    else

    else

        props.batteryPresent = mBatteryDevicePresent;

        props.batteryPresent = mBatteryDevicePresent;





    props.batteryLevel = getIntField(mHealthdConfig->batteryCapacityPath);

    props.batteryLevel = mBatteryFixedCapacity ?

        mBatteryFixedCapacity :

        getIntField(mHealthdConfig->batteryCapacityPath);

    props.batteryVoltage = getIntField(mHealthdConfig->batteryVoltagePath) / 1000;

    props.batteryVoltage = getIntField(mHealthdConfig->batteryVoltagePath) / 1000;





    props.batteryTemperature = getIntField(mHealthdConfig->batteryTemperaturePath);

    props.batteryTemperature = mBatteryFixedTemperature ?

        mBatteryFixedTemperature :

        getIntField(mHealthdConfig->batteryTemperaturePath);





    const int SIZE = 128;

    const int SIZE = 128;

    char buf[SIZE];

    char buf[SIZE];
@@ -367,6 +372,7 @@ void BatteryMonitor::dumpState(int fd) { 




void BatteryMonitor::init(struct healthd_config *hc) {

void BatteryMonitor::init(struct healthd_config *hc) {

    String8 path;

    String8 path;

    char pval[PROPERTY_VALUE_MAX];





    mHealthdConfig = hc;

    mHealthdConfig = hc;

    DIR* dir = opendir(POWER_SUPPLY_SYSFS_PATH);

    DIR* dir = opendir(POWER_SUPPLY_SYSFS_PATH);
@@ -523,6 +529,12 @@ void BatteryMonitor::init(struct healthd_config *hc) { 
        if (mHealthdConfig->batteryTechnologyPath.isEmpty())

        if (mHealthdConfig->batteryTechnologyPath.isEmpty())

            KLOG_WARNING(LOG_TAG, "BatteryTechnologyPath not found\n");

            KLOG_WARNING(LOG_TAG, "BatteryTechnologyPath not found\n");

    }

    }



    if (property_get("persist.sys.battery.capacity", pval, NULL) > 0)

        mBatteryFixedCapacity = (int) strtol(pval, NULL, 10);



    if (property_get("persist.sys.battery.temperature", pval, NULL) > 0)

        mBatteryFixedTemperature = (int) strtol(pval, NULL, 10);

}

}





}; // namespace android
 
}; // namespace android

healthd/BatteryMonitor.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -46,6 +46,8 @@ class BatteryMonitor { 
    struct healthd_config *mHealthdConfig;

    struct healthd_config *mHealthdConfig;

    Vector<String8> mChargerNames;

    Vector<String8> mChargerNames;

    bool mBatteryDevicePresent;

    bool mBatteryDevicePresent;

    int mBatteryFixedCapacity;

    int mBatteryFixedTemperature;

    struct BatteryProperties props;

    struct BatteryProperties props;





    int getBatteryStatus(const char* status);

    int getBatteryStatus(const char* status);