58 lines
2 KiB
C
58 lines
2 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2021 Aidan MacDonald
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __CW2015_H__
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#define __CW2015_H__
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#include <stdint.h>
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#include <stdbool.h>
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/* Driver for I2C battery fuel gauge IC CW2015. */
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#define CW2015_REG_VERSION 0x00
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#define CW2015_REG_VCELL 0x02 /* 14 bits, registers 0x02 - 0x03 */
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#define CW2015_REG_SOC 0x04 /* 16 bits, registers 0x04 - 0x05 */
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#define CW2015_REG_RRT_ALERT 0x06 /* 13 bit RRT + alert flag, 0x06-0x07 */
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#define CW2015_REG_CONFIG 0x08
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#define CW2015_REG_MODE 0x0a
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#define CW2015_REG_BATINFO 0x10 /* cf. mainline Linux CW2015 driver */
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#define CW2015_SIZE_BATINFO 64
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extern void cw2015_init(void);
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/* Read the battery terminal voltage, converted to millivolts. */
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extern int cw2015_get_vcell(void);
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/* Read the SOC, in percent (0-100%). */
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extern int cw2015_get_soc(void);
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/* Get the estimated remaining run time, in minutes.
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* Not a linearly varying quantity, according to the datasheet. */
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extern int cw2015_get_rrt(void);
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/* Read the current battery profile */
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extern const uint8_t* cw2015_get_bat_info(void);
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/* Debug screen */
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extern bool cw2015_debug_menu(void);
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#endif /* __CW2015_H__ */
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