1 files changed, 64 insertions, 0 deletions

diff --git a/firmware/target/arm/as3525/sansa-clip/powermgmt-clip.c b/firmware/target/arm/as3525/sansa-clip/powermgmt-clip.c
new file mode 100644
index 0000000000..f04760d9de
--- /dev/null
+++ b/firmware/target/arm/as3525/sansa-clip/powermgmt-clip.c
@@ -0,0 +1,64 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright © 2008 Rafaël Carré
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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 "adc-target.h"
+#include "powermgmt.h"
+
+/* The battery manufacturer's website shows discharge curves down to 3.0V,
+   so 'dangerous' and 'shutoff' levels of 3.4V and 3.3V should be safe.
+ */
+const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
+{
+    3400
+};
+
+const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
+{
+    3300
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
+const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
+{
+    { 3300, 3653, 3701, 3735, 3768, 3790, 3833, 3900, 3966, 4056, 4140 }
+};
+
+#if CONFIG_CHARGING
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
+const unsigned short percent_to_volt_charge[11] =
+{
+    /* TODO: simple linear uncalibrated curve */
+    3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200
+};
+#endif /* CONFIG_CHARGING */
+
+/* ADC should read 0x3ff=5.12V */
+#define BATTERY_SCALE_FACTOR 5125       
+/* full-scale ADC readout (2^10) in millivolt */
+
+/* Returns battery voltage from ADC [millivolts] */
+unsigned int battery_adc_voltage(void)
+{
+    return (adc_read(ADC_RTCSUP) * BATTERY_SCALE_FACTOR) >> 10;
+}
+