-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Somebody in the thread at some point said: > On Thursday, Feb 14, 2008, "Kyle Bassett" writes: >> There is talk about pushing startup power control of the internal devices >> (wifi, bt, gps, mmc, etc.) to user level, as every user may or may not want >> certain devices available at bootup/all the time (availability vs. >> duration). > > Indeed, this along with good realtime stats on power usage and current > battery level would let people have reasonably accurate predictions of > their battery life. It'd be interesting (to me at least) to turn > on and off the various peripherals and watch my projected battery life > go up and down accordingly.
GTA02 is capable to dialogue with a "smart battery" that will allow you to see the battery actual voltage and current flow (together: actual power) in uA down /sys in realtime, it uses the linux "Power Supply" class to expose it so it is generic. (I don't know for sure if it will ship with such a battery since it is decided in .tw according to availability and so on, but I hope it will.) The battery itself learns its cell performance over load and also makes available its "time to full/empty" estimate down /sys as well in seconds. You can see what data is available here: http://www.ti.com/lit/gpn/bq27000 You can see stuff like this for i in capacity charge_full current_now present status technology temp time_to_empty_now time_to_full_now type voltage_now ; do echo -n "$i " ; cat /sys/devices/platform/bq27000-battery.0/power_supply/bat/$i ; done capacity 0 charge_full 1215585 current_now 183375 present 1 status Discharging technology Li-ion temp 276 time_to_empty_now 0 time_to_full_now 3932100 type Battery voltage_now 2761000 - -Andy -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFHtG+yOjLpvpq7dMoRAq2TAJoCYOC+PD3gj/jRMpOPnBL5MZJkzQCfTJn4 9ebCrbNjtGtDMBsJuUXZ8HY= =ANtG -----END PGP SIGNATURE----- _______________________________________________ OpenMoko community mailing list firstname.lastname@example.org http://lists.openmoko.org/mailman/listinfo/community