On Monday 14 July 2008, Stroller wrote: > Hi there, > > It looks like my problem with SIM registration [1] may be easily > solvable simply by trying a different SIM or reseating the current one. > > But because I'm fetishistic about following battery charging > instructions I don't want to try this (which requires removing the > battery) until the unit is fully charged. > > The wiki [2] says: > > The battery can be charged using the provided charger (at 1000mA) > or from a powered USB port capable of providing 500mA worth of > current. Most computers will be able to charge the FreeRunner without > any problems. > > Charging at 100mA takes 6-12 hours and at 500mA takes 1-2 hour > > > I understood the provided charger was a dumb one and that - because > the Freerunner is unable to communicate with it - an unpowered USB > connection would be assumed, the Freerunner would act conservatively, > only drawing 100mA. > > Which is correct, please?
The charger is dumb, but has a 47k resistor from the ID pin of the USB connector to ground. This allows the Freerunner to identify it as capable to provide 1000mA. See the USB Host section of: http://wiki.openmoko.org/wiki/Neo_FreeRunner_GTA02_Hardware > I decided to try forcing the Freerunner to fast-charge, and a little > Googling found me the CheckFastCharge-script on the Wiki [3]. > > Reading checkFastCharge.py I find that it checks '/sys/devices/ > platform/s3c2410-i2c/i2c-adapter/i2c-0/0-0008/chgmode' and that fast > charging is indicated by "fast_cccv" there. > > Presumably this script was written for the Neo1973, however, or a > different kernel, as on my Freerunner the location is '/sys/devices/ > platform/s3c2440-i2c/i2c-adapter/i2c-0/0-0073/chgmode' and it > currently says "fast", not "fast_cccv" (or, for that matter, slow or > anything like that). > > So is "fast" the correct syntax for the Freerunner's chgmode? > Has it somehow detected that the charger is capable of 500+ mA? > Or should I echo "fast_cccv" to that location? > What are the correct '/sys/devices/platform/s3c2440-i2c/i2c-adapter/ > i2c-0/0-0073/chgmode' values for "slow" and no-charge for the > Freerunner, please? (using the default factory image) > Or is chgmode simply broken on the Freerunner's default factory image? > > TIA for any suggestions, > > Stroller. > > > > > > [1] http://lists.openmoko.org/pipermail/community/2008-July/021677.html > [2] http://wiki.openmoko.org/wiki/ > Getting_Started_with_your_Neo_FreeRunner#Charging_the_Neo_Freerunner > [3] http://wiki.openmoko.org/wiki/CheckFastCharge-script > > > _______________________________________________ > Openmoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
