From 0fac492c3da8b46ad1cf5a668e5d851c63443a94 Mon Sep 17 00:00:00 2001
From: Jens Arnold <amiconn@rockbox.org>
Date: Fri, 17 Aug 2007 06:45:18 +0000
Subject: 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
---
 .../target/sh/archos/recorder/powermgmt-recorder.c | 60 ++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 firmware/target/sh/archos/recorder/powermgmt-recorder.c

(limited to 'firmware/target/sh/archos/recorder/powermgmt-recorder.c')

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 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese
+ * Revisions copyright (C) 2005 by Gerald Van Baren
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+#include "adc.h"
+#include "powermgmt.h"
+
+const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
+{
+    4750
+};
+
+const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
+{
+    4400
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
+const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
+{
+    /* original values were taken directly after charging, but it should show
+       100% after turning off the device for some hours, too */
+    { 4500, 4810, 4910, 4970, 5030, 5070, 5120, 5140, 5170, 5250, 5400 }
+                                            /* orig. values: ...,5280,5600 */
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
+const unsigned short percent_to_volt_charge[11] =
+{
+    /* values guessed, see
+       http://www.seattlerobotics.org/encoder/200210/LiIon2.pdf until someone
+       measures voltages over a charging cycle */
+    4760, 5440, 5510, 5560, 5610, 5640, 5660, 5760, 5820, 5840, 5850 /* NiMH */
+};
+
+#define BATTERY_SCALE_FACTOR 6620
+/* full-scale ADC readout (2^10) in millivolt */
+
+/* Returns battery voltage from ADC [millivolts] */
+unsigned int battery_adc_voltage(void)
+{
+    return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10;
+}
-- 
cgit v1.2.3