86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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* Copyright 2020 Google LLC
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_DRIVERS_SENSOR_BATTERY_MAX17055_H_
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#define ZEPHYR_DRIVERS_SENSOR_BATTERY_MAX17055_H_
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/* Register addresses */
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enum {
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STATUS = 0x0,
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REP_CAP = 0x5,
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REP_SOC = 0x6,
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INT_TEMP = 0x8,
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VCELL = 0x9,
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AVG_CURRENT = 0xb,
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FULL_CAP_REP = 0x10,
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TTE = 0x11,
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ICHG_TERM = 0x1e,
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CYCLES = 0x17,
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DESIGN_CAP = 0x18,
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TTF = 0x20,
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V_EMPTY = 0x3a,
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FSTAT = 0x3d,
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D_QACC = 0x45,
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D_PACC = 0x46,
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SOFT_WAKEUP = 0x60,
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HIB_CFG = 0xba,
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MODEL_CFG = 0xdb,
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};
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/* Masks */
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enum {
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FSTAT_DNR = 0x0001,
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HIB_CFG_CLEAR = 0x0000,
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MODELCFG_REFRESH = 0x8000,
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SOFT_WAKEUP_CLEAR = 0x0000,
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SOFT_WAKEUP_WAKEUP = 0x0090,
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STATUS_POR = 0x0002,
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};
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struct max17055_data {
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const struct device *i2c;
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/* Current cell voltage in units of 1.25/16mV */
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uint16_t voltage;
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/* Average current in units of 1.5625uV / Rsense */
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int16_t avg_current;
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/* Remaining capacity as a %age */
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uint16_t state_of_charge;
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/* Internal temperature in units of 1/256 degrees C */
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int16_t internal_temp;
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/* Full charge capacity in 5/Rsense uA */
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uint16_t full_cap;
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/* Remaining capacity in 5/Rsense uA */
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uint16_t remaining_cap;
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/* Time to empty in seconds */
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uint16_t time_to_empty;
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/* Time to full in seconds */
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uint16_t time_to_full;
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/* Cycle count in 1/100ths (number of charge/discharge cycles) */
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uint16_t cycle_count;
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/* Design capacity in 5/Rsense uA */
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uint16_t design_cap;
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};
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struct max17055_config {
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char *bus_name;
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/* Value of Rsense resistor in milliohms (typicallly 5 or 10) */
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uint16_t rsense_mohms;
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/* The design capacity (aka label capacity) of the cell in mAh */
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uint16_t design_capacity;
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/* Design voltage of cell in mV */
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uint16_t design_voltage;
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/* Desired voltage of cell in mV */
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uint16_t desired_voltage;
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/* Desired charging current in mA */
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uint16_t desired_charging_current;
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/* The charge termination current in uA */
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uint16_t i_chg_term;
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/* The empty voltage of the cell in mV */
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uint16_t v_empty;
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};
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#endif
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