61 lines
2 KiB
C
61 lines
2 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright © 2013 Andrew Ryabinin
|
|
*
|
|
* 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"
|
|
|
|
/**
|
|
* Battery voltage calculation and discharge/charge curves for the HiFi E.T MA9.
|
|
*/
|
|
|
|
const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
|
|
{
|
|
/* TODO: this is just an initial guess */
|
|
6700
|
|
};
|
|
|
|
const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
|
|
{
|
|
6600
|
|
};
|
|
|
|
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
|
|
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
|
|
{
|
|
/* Uncalibrated curve */
|
|
{ 6600, 6936, 7042, 7124, 7218, 7288, 7382, 7534, 7674, 7838, 8200 }
|
|
};
|
|
|
|
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
|
|
const unsigned short percent_to_volt_charge[11] =
|
|
/* TODO: simple copy of discharge curve */
|
|
{ 6600, 6936, 7042, 7124, 7218, 7288, 7382, 7534, 7674, 7838, 8200 };
|
|
|
|
/* full-scale ADC readout (2^10) in millivolt */
|
|
#define BATTERY_SCALE_FACTOR 9170
|
|
|
|
/* Returns battery voltage from ADC [millivolts] */
|
|
int _battery_voltage(void)
|
|
{
|
|
return (adc_read(ADC_BATTERY) * BATTERY_SCALE_FACTOR) >> 10;
|
|
}
|