Editing N900 Hardware Charge Meter
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- | There is no kernel driver in the default N900 software for this chip, a [http://tomoyo.sourceforge.jp/cgi-bin/lxr/source/drivers/power/bq27x00_battery.c partial third party driver | + | There is no kernel driver in the default N900 software for this chip, a [http://tomoyo.sourceforge.jp/cgi-bin/lxr/source/drivers/power/bq27x00_battery.c partial third party driver exists]. |
- | This third party driver has some issues - for example - the 'current_now' value it exports is not mA, but needs multiplied by (3.57/n) - where n is the sense resistor in the N900 | + | This third party driver has some issues - for example - the 'current_now' value it exports is not mA, but needs multiplied by (3.57/n) - where n is the sense resistor in the N900. |
- | + | The sense resistor seems to be between 20 and 22 mR - but no accurate measurements have been performed, and the schematic does not help with this. | |
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[[Category:N900 Hardware]] | [[Category:N900 Hardware]] |
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