Hi, The battery capacity is getting updated while plug/unplug of charger. But not getting updated while discharging.
The BatteryService class is very much able to read the battery capacity, ac - online, usb - online, etc. The problem that I am facing is the battery capacity is getting updated only on plug/unplug of charger. In the mean time its not updated. But if I read the capacity through the sysfs I see the updated capacity. What I guess is in android only there should be some application that should read the battery capacity from sysfs at time intervals "t" and update the same. Please let me know on this. Thanks and Regards, Arun R Murthy -------------------- Thanks and Regards, Arun R Murthy -------------------- On Tue, Apr 13, 2010 at 7:53 AM, ZhangJieJing <[email protected]> wrote: > CC the list. > > Hi, > > the BatteryService is working like this: > > cd /sys/class/power_supply > > for each dir: > if have a file named type: > if type == Battery > read capicty ...etc > if type == AC > read online > if type == USB > read online > > If you mean it not updated on unplug & plug charger, you should first check > the type of your power_supply driver. > > --- > Best regards, > Zhang Jiejing > > > 2010/4/12 Arun Raghavendra Murthy <[email protected]> > >> Hi, >> In that case it is working for me. >> On the event of power supply changed the battery capacity is getting >> updated. >> On plugging the AC charger capacity gets updated and on removal of AC >> charger capacity gets updated. But in the mean time i.t between charging >> plug and unplug it is not getting updated though i see a change in the >> sysfs. >> >> Thanks and Regards, >> Arun R Murthy >> --------------------- >> >> On Mon, Apr 12, 2010 at 7:55 AM, ZhangJieJing <[email protected]> wrote: >> >>> Hi, >>> >>> you don't need send separatedly battery capacity, android framework only >>> monitor POWER_SUPPLY_CHANGED uevent, if it received the uevent, it will read >>> the sys fs under /sys/class/power_supply/* files to get the voltage, >>> current, capacity, etc, >>> you may need see >>> file frameworks/base/services/jni/com_android_server_BatteryService.cpp to >>> see the detail. >>> >>> --- >>> Best regards, >>> Zhang Jiejing >>> >>> >>> 2010/4/12 Arun Raghavendra Murthy <[email protected]> >>> >>> Hi, >>>> The power_supply_changed() will handle if there is any change in >>>> power supply i.e plug/unplug of AC/USB. >>>> I have a work which keeps monitoring my battery parameters i.e battery >>>> voltage, current, capacity. >>>> >>>> Also I notice that all POWER_SUPPLY_PROP_* are registered as uevents in >>>> the power supply core driver. >>>> So is it necessary for me to send an uevent separately for battery >>>> capacity.? >>>> >>>> >>>> Thanks and Regards, >>>> Arun R Murthy >>>> -------------------- >>>> >>>> On Thu, Apr 8, 2010 at 8:36 PM, ZhangJieJing <[email protected]>wrote: >>>> >>>>> Hi, >>>>> >>>>> you need check your battery driver, the update of battery capacity is >>>>> drive by uevent send by driver(via power_supply_changed() func), your >>>>> driver >>>>> may need have a delayed work or timer function to send this event every >>>>> timeout, such as 1 minute. >>>>> >>>>> you can reference file: drivers/power/tosa_battery.c about this. >>>>> --- >>>>> Best regards, >>>>> Zhang Jiejing >>>>> >>>>> >>>>> 2010/4/5 Arun R Murthy <[email protected]> >>>>> >>>>>> Hi All, >>>>>> I am using andoird eclair and not able to see the battery capacity >>>>>> getting updated while charging/discharging. >>>>>> Wherein when I try to cat the battery capacity from the sysfs I am >>>>>> able to see the change. >>>>>> The only event that updates the battery capacity, voltage, etc in the >>>>>> application is the plug/unplug of the >>>>>> AC/USB charger. >>>>>> Please let me know on this. >>>>>> >>>>>> Thanks and Regards, >>>>>> Arun R Murthy >>>>>> ------------------- >>>>>> >>>>>> -- >>>>>> unsubscribe: >>>>>> [email protected]<android-porting%[email protected]> >>>>>> website: http://groups.google.com/group/android-porting >>>>>> >>>>>> To unsubscribe, reply using "remove me" as the subject. >>>>>> >>>>> >>>>> >>>> >>>> >>>> -- >>>> Arun R Murthy >>>> >>>> >>>> >>> >> >> >> -- >> Arun R Murthy >> >> >> -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting
