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FS#9072 - iPod color/photo battery voltage invalid

Attached to Project: Rockbox
Opened by Yoshihisa Uchida (Uchida) - Wednesday, 04 June 2008, 16:23 GMT+1
Last edited by Nils Wallménius (nls) - Wednesday, 12 November 2008, 16:19 GMT+1
Task Type Patches
Category Battery/Charging
Status Unconfirmed
Assigned To No-one
Player type iPod 4G Color
Severity Low
Priority Normal
Reported Version current build
Due in Version Version 3.1
Due Date Undecided
Percent Complete 0%
Private No

Details

For iPod color/photo, the following values invalid.
-battery_level_dangerous
-battery_level_shutoff
-percent_to_volt_discharge
-percent_to_volt_charge

This patch file was made based on the test result
of using my iPod color.

   ipod_color_battery.patch (2.4 KiB)
This task depends upon

Comment by Andree Buschmann (Buschel) - Wednesday, 04 June 2008, 21:33 GMT+1
Can you provide battery benchs with old and new calibrated settings?

And next question: Why is the lowest tableized battery voltage (3230mV) below the shutdown limit voltage (3300V)? This would lead to never reach 0% capacity but shutting down at ~2% capacity.
Comment by Yoshihisa Uchida (Uchida) - Sunday, 08 June 2008, 08:49 GMT+1
I'm sorry that the answer is late.

The result of "Battery bench" is sent (I use the firmware which the patch applied).

In my experiment, the Rockbox doesn't move in the value whose voltage of the battery of iPod is smaller than that of 3230mV.
Therefore, it thought whether I should shutdown the Rockbox at about 3300mV in the voltage of the battery.
   battery_bench.txt (153.4 KiB)
Comment by Yoshihisa Uchida (Uchida) - Monday, 09 June 2008, 04:33 GMT+1
I send the result of the battery bench where the firmware of original Rockbox (svn 17703) was used.
   battery_bench_orig.txt (82.6 KiB)

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