Am Freitag, den 10.10.2008, 00:55 -0400 schrieb Joel Newkirk: > AFAIK by default they're always powered up. Certainly apart from the times > I hit 'dead accelerometers' that took a few reflashes to get going again, > I've never had to power them up unless I'd previously powered down.
They're only consuming energy once someone has the device nodes open. > According to the datasheet at http://wiki.openmoko.org/wiki/ST_LIS302DL: > > Symbol Parameter Test conditions Min.Max.Unit > Idd Supply current T = 25°C, ODR=100Hz 0.3 0.4 mA > IddPdn Current consumption in T = 25°C 1 5 μA > power-down mode > > So the power draw is pretty low, both together being less than one > milliamp. > > I suspect that frameworkd will be able to shut them down automatically if > nothing needs them, once accel support is incorporated. (IIRC it does that > now for other subsystems, like gps) I'm still waiting for the kernel developers to enable the wakeup-threshold. That should make it possible to shake it before it reacts to any gesture, hence allowing to incorporate gestures everywhere (if wanted). :M: _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community