Hi, what I know is battery capacity update is triggered by POWER_SUPPLY_UEVENT, 1, please ensure this UEVENT is sent, you can change init.rc 's loglevel to 9 to get the uevent dump. 2, what this command output: # ls /sys/class/power_supply
I think the plug/unplug make the battery capacity update is because it will send a POWER_SUPPLY_CHANGED uevnet, and on discharging, you don't let your driver send the uevent in a time(eg. 60s). if it's true, you should add a timer or delayed_work in your battery driver to do this job. --- Best regards, Zhang Jiejing 2010/4/13 Arun Raghavendra Murthy <rmurthy.a...@gmail.com> > 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 <kzj...@gmail.com> 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 <rmurthy.a...@gmail.com> >> >>> 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 <kzj...@gmail.com>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 <rmurthy.a...@gmail.com> >>>> >>>> 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 <kzj...@gmail.com>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 <rmurthy.a...@gmail.com> >>>>>> >>>>>>> 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: >>>>>>> android-porting+unsubscr...@googlegroups.com<android-porting%2bunsubscr...@googlegroups.com> >>>>>>> website: http://groups.google.com/group/android-porting >>>>>>> >>>>>>> To unsubscribe, reply using "remove me" as the subject. >>>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> Arun R Murthy >>>>> >>>>> >>>>> >>>> >>> >>> >>> -- >>> Arun R Murthy >>> >>> >>> > > -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting
