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author | Jens Arnold <amiconn@rockbox.org> | 2007-08-17 06:45:18 +0000 |
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committer | Jens Arnold <amiconn@rockbox.org> | 2007-08-17 06:45:18 +0000 |
commit | 0fac492c3da8b46ad1cf5a668e5d851c63443a94 (patch) | |
tree | 95fb6637601a4b3c730f4aec1d2e7e7ab78e208b /firmware/target/sh/archos/recorder/powermgmt-recorder.c | |
parent | 12706e4b1d4ce65df441dcf6e2b160657ea3fa38 (diff) | |
download | rockbox-0fac492c3da8b46ad1cf5a668e5d851c63443a94.tar.gz rockbox-0fac492c3da8b46ad1cf5a668e5d851c63443a94.zip |
First step of powermanagement rework: * Move target specific stuff into target tree, starting with battery voltage tables and voltage reading. (This revealed some incorrect percent_to_voltage_charging mappings). * Voltage reading on 1st gen ipods is now correct. * Clean up obsolete config #defines.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14375 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/sh/archos/recorder/powermgmt-recorder.c')
-rw-r--r-- | firmware/target/sh/archos/recorder/powermgmt-recorder.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/firmware/target/sh/archos/recorder/powermgmt-recorder.c b/firmware/target/sh/archos/recorder/powermgmt-recorder.c new file mode 100644 index 0000000000..c44076f589 --- /dev/null +++ b/firmware/target/sh/archos/recorder/powermgmt-recorder.c | |||
@@ -0,0 +1,60 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese | ||
11 | * Revisions copyright (C) 2005 by Gerald Van Baren | ||
12 | * | ||
13 | * All files in this archive are subject to the GNU General Public License. | ||
14 | * See the file COPYING in the source tree root for full license agreement. | ||
15 | * | ||
16 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
17 | * KIND, either express or implied. | ||
18 | * | ||
19 | ****************************************************************************/ | ||
20 | |||
21 | #include "config.h" | ||
22 | #include "adc.h" | ||
23 | #include "powermgmt.h" | ||
24 | |||
25 | const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] = | ||
26 | { | ||
27 | 4750 | ||
28 | }; | ||
29 | |||
30 | const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] = | ||
31 | { | ||
32 | 4400 | ||
33 | }; | ||
34 | |||
35 | /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */ | ||
36 | const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = | ||
37 | { | ||
38 | /* original values were taken directly after charging, but it should show | ||
39 | 100% after turning off the device for some hours, too */ | ||
40 | { 4500, 4810, 4910, 4970, 5030, 5070, 5120, 5140, 5170, 5250, 5400 } | ||
41 | /* orig. values: ...,5280,5600 */ | ||
42 | }; | ||
43 | |||
44 | /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */ | ||
45 | const unsigned short percent_to_volt_charge[11] = | ||
46 | { | ||
47 | /* values guessed, see | ||
48 | http://www.seattlerobotics.org/encoder/200210/LiIon2.pdf until someone | ||
49 | measures voltages over a charging cycle */ | ||
50 | 4760, 5440, 5510, 5560, 5610, 5640, 5660, 5760, 5820, 5840, 5850 /* NiMH */ | ||
51 | }; | ||
52 | |||
53 | #define BATTERY_SCALE_FACTOR 6620 | ||
54 | /* full-scale ADC readout (2^10) in millivolt */ | ||
55 | |||
56 | /* Returns battery voltage from ADC [millivolts] */ | ||
57 | unsigned int battery_adc_voltage(void) | ||
58 | { | ||
59 | return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10; | ||
60 | } | ||