Possibly. But as I said, the G1 battery can't measure this. On Mon, Mar 15, 2010 at 6:22 AM, Chintan <chinta...@gmail.com> wrote:
> Ok, I have one doubt though. > What does the parameter batt_current under sysfs (/sys/class/ > power_supply/battery/batt_current ) represent? > > Isn't that instantaneous current drawn from battery? > > On Mar 14, 11:49 pm, Dianne Hackborn <hack...@android.com> wrote: > > The G1 battery doesn't have a current meter (I assume you are wanting to > > measure the current current draw), so there is no data for that. The > > firmware does some magical tricks to try to estimate how much the battery > > has drained based on the hardware that is being used. > > > > > > > > On Sat, Mar 13, 2010 at 12:21 PM, Chintan <chinta...@gmail.com> wrote: > > > I am trying to collect power usage statistics for the Android G1 > > > Phone. I am interested in knowing the values of Voltage and Current, > > > and then able to collect statistics as reported here > > > > >http://dl.google.com/io/2009/pres/W_0300_CodingforLife-BatteryLifeTha. > .. > > > > > I am able to get the value of Battery voltage through registering for > > > an intent receiver to receive the Broadcast for > > > ACTION_BATTERY_CHANGED. But the problem is that Android does not > > > expose the value of current through this SDK interface. > > > > > One way I tried is via sysfs interface, where I can view the battery > > > current value from adb shell, using the following command > > > > > $cat /sys/class/power_supply/battery/batt_current > > > 449 > > > > > But that too works only if the phone is connected via USB interface. > > > If I disconnect the phone, I see the value of batt_current as '0'. I > > > am not sure why the value of current reported is zero. It should be > > > more than zero, right? > > > > > Any suggestion / pointers for getting battery current value? Also > > > please correct me if I am wrong. > > > > > -- > > > unsubscribe: > > > android-kernel+unsubscr...@googlegroups.com<android-kernel%2bunsubscr...@googlegroups.com> > <android-kernel%2bunsubscr...@googlegroups.com<android-kernel%252bunsubscr...@googlegroups.com> > > > > > website:http://groups.google.com/group/android-kernel > > > > -- > > Dianne Hackborn > > Android framework engineer > > hack...@android.com > > > > Note: please don't send private questions to me, as I don't have time to > > provide private support, and so won't reply to such e-mails. All such > > questions should be posted on public forums, where I and others can see > and > > answer them. > > -- > unsubscribe: > android-kernel+unsubscr...@googlegroups.com<android-kernel%2bunsubscr...@googlegroups.com> > website: http://groups.google.com/group/android-kernel > -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel
