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| author | Tobias Diedrich <ranma+coreboot@tdiedrich.de> | 2010-04-08 18:50:29 +0000 |
|---|---|---|
| committer | Tobias Diedrich <ranma+coreboot@tdiedrich.de> | 2010-04-08 18:50:29 +0000 |
| commit | 12a6ef5c18a003c3bd066d8c00dd34544b038114 (patch) | |
| tree | dbbb02a9036b2d6b4ec0b4bfe9de3dcf81156e81 | |
| parent | f85b54ce800d7a90895a536cd23070952cb9f24f (diff) | |
| download | rockbox-12a6ef5c18a003c3bd066d8c00dd34544b038114.zip rockbox-12a6ef5c18a003c3bd066d8c00dd34544b038114.tar.gz rockbox-12a6ef5c18a003c3bd066d8c00dd34544b038114.tar.bz2 rockbox-12a6ef5c18a003c3bd066d8c00dd34544b038114.tar.xz | |
Use a real battery discharge curve for calibration data
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25540 a1c6a512-1295-4272-9138-f99709370657
| -rw-r--r-- | firmware/target/arm/as3525/powermgmt-as3525.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/firmware/target/arm/as3525/powermgmt-as3525.c b/firmware/target/arm/as3525/powermgmt-as3525.c index 47e0376..ae65eb5 100644 --- a/firmware/target/arm/as3525/powermgmt-as3525.c +++ b/firmware/target/arm/as3525/powermgmt-as3525.c @@ -35,21 +35,29 @@ const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] = { - /* TODO: this is just an initial guess */ - 3400 + /* + * about 10%, calibrated with C240v2 battery profile at + * http://www.rockbox.org/wiki/bin/viewfile/Main/SansaRuntime?filename=c240v2_battery_bench_percent.png;rev=1 + */ + 3600 }; const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] = { - /* TODO: this is just an initial guess */ 3300 }; /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */ const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = { - /* TODO: simple uncalibrated curve, linear except for first 10% */ - { 3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200 } + /* + * TODO: + * Below table is calibrated for C240v2 according to + * http://www.rockbox.org/wiki/bin/viewfile/Main/SansaRuntime?filename=c240v2_battery_bench_percent.png;rev=1 + * Batteries for other models may have different discharging curves. + * OF seems to stop charging at 4150mV, so that's 100% here. + */ + { 3300, 3597, 3674, 3719, 3745, 3776, 3825, 3890, 3954, 4035, 4150 } }; #if CONFIG_CHARGING |