[Bug 1181] Battery temperature is incorrect (fix)

[bugzilla-daemon at bugzilla.openmoko.org]

http://bugzilla.openmoko.org/cgi-bin/bugzilla/show_bug.cgi?id=1181

werner at openmoko.org changed:

           What    |Removed                     |Added
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                 CC|                            |werner at openmoko.org



------- Additional Comments From werner at openmoko.org  2008-02-10 22:56 -------
The resistor situation is as follows:
- in the GTA01, BATTEMP to GND: 10k 1%
- in the GTA01, NTCSW to BATTEMP: 10k 1%
- in the battery: Thermistor to GND: 10k 5% at 25C, B=3370K 3%

B is defined as B = (1/(25+273.15)-1/(50+273.15))^-1 * ln(R25/R50)
where R25 = zero-power resistance at 25C, R50 = at 50C
(Nominal: R20 = 12070, R30 = 8320, R40 = 5839, R50 = 4171, R100 = 983)

Is the patch still correct given this information ?



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