Re: Setting / checking fast charge in /sys/devices/platform/whatever
On Monday 14 July 2008 21:44, Stroller wrote: ... 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? Did you actually try this yet, and did it work? I just bought a car-charges which is supossed to be able to provide over 2A, but the freerunner will only pull 100mA which is annoying. A related question, the freerunner wil detect a 47k resitor in the official charger. Is this value measured and available in software somewere? We might be able to identify other chargers as well and build a database of ID resistors and allowed current (assuming other vendors use the same trick). AVee -- With clothes the new are best, with friends the old are best. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Setting / checking fast charge in /sys/devices/platform/whatever
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Somebody in the thread at some point said: | On Monday 14 July 2008 21:44, Stroller wrote: | ... | 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? | | Did you actually try this yet, and did it work? I just bought a car-charges | which is supossed to be able to provide over 2A, but the freerunner will only | pull 100mA which is annoying. You can force it to pull up to 1A if you are sure it's OK for your power source. http://wiki.openmoko.org/wiki/GTA02_sysfs#.2Fsys.2Fdevices.2Fplatform.2Fs3c2440-i2c.2Fi2c-adapter.2Fi2c-0.2F0-0073.2Fforce_usb_limit_dangerous fast and so on are modes in the charger state machine, they're different from the actual limits which are enforced earlier in the power chain pretty much at the USB power inputs to the PMU. | A related question, the freerunner wil detect a 47k resitor in the official | charger. Is this value measured and available in software somewere? We might | be able to identify other chargers as well and build a database of ID | resistors and allowed current (assuming other vendors use the same trick). I don't think it is exposed down /sys at the moment. - -Andy -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkiKR6AACgkQOjLpvpq7dMrDhwCeKAFbddKHVdQ7ka4bHMoh50su yp0AnjJFUrX4xv9vToRlJSk6SD2MDAqg =rwCV -END PGP SIGNATURE- ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Setting / checking fast charge in /sys/devices/platform/whatever
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? 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 community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Setting / checking fast charge in /sys/devices/platform/whatever
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 community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Setting / checking fast charge in /sys/devices/platform/whatever
On 14 Jul 2008, at 23:17, Al Johnson wrote: ... 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 Ah, marvellous! Thank you. So a full charge using the wall charger takes only 1 hour or so? Does /sys/devices/platform/whatever have a node for checking charge status? Stroller. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
