u-boot fix to charge empty battery
werner at openmoko.org
Thu Oct 9 14:10:38 CEST 2008
Philipp Hug wrote:
> * charging is only done when the LED is not active. Probably to make
> measurement of power more accurate.
> -> Is this really necessary? It really slows down charging.
I linked this to the LED just for convenience. In theory, you could
probably make the non-charging interval much shorter.
You need to stop the charger when measuring, because a battery that's
missing or in cut-off would read as being at the float voltage (i.e.,
> * revisions <6 don't blink the LED when charging, this isn't optimal,
> because can't see the difference between being switched off and charging
Yeah, I didn't enjoy doing that. You could probably get away by
briefly flashing the LED, and living on the extra juice stored in
capacitors. Not sure if it's worth the trouble, though.
> Does anyone know how much current the LED use on GTA02v5?
About 50mA, half of the total current budget in that situation.
More information about the devel