Paul, > Yes, i think that's the case. The only state where integrated power > measurement > readings are unavailable is suspend and that's quite low level > already.
You could measure the current when you wake up, couldn't you? > bq27000 measures current accurately so it should be possible. I'm sure > there's some decent IC suitable for your task. bq27000 is a chip, right? You mean we should have that chip inside the device, instead of having it in every battery? That would make the batteries cheaper as well, I believe the CC batteries cost 2 USD or so more than without CC :-( Wolfgang On Sun, Aug 02, 2009 at 11:22:40PM +0400, Paul Fertser wrote: > Wolfgang Spraul <[email protected]> writes: > >> To me it seems that CC readings are almost unused except for > >> presenting the user with a bit more accurate capacity data. And when > >> someone is developing something lowlevel he could as well connect and > >> external ampmeter, much more reliable and flexible approach. > > > > Now, if an accurate way to measure the current in the device solves 80% of > > that > > as well, then the (big) extra cost of supporting CC batteries is not worth > > it. > > Yes, i think that's the case. The only state where integrated power > measurement > readings are unavailable is suspend and that's quite low level > already. > > > So for me it all comes down to precision. Is it possible to build a cheap > > and > > accurate way to measure current in the device? > > bq27000 measures current accurately so it should be possible. I'm sure > there's some decent IC suitable for your task. > > -- > Be free, use free (http://www.gnu.org/philosophy/free-sw.html) software! > mailto:[email protected] _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
