53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
#ifndef BATT_MGMT_H
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#define BATT_MGMT_H
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#include <zephyr/types.h>
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#include <stdbool.h>
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#define BATT_MGMT_OVERSAMPLING_8X 8U
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#define BATT_MGMT_OVERSAMPLING_16X 16U
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typedef enum {
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BATT_STATE_DISCHARGING = 0,
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BATT_STATE_FULL,
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BATT_STATE_CHARGING,
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BATT_STATE_ERROR,
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BATT_STATE_UNKNOWN,
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} batt_mgmt_state_t;
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/**
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* @brief Measure battery VDDH voltage.
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*
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* @param oversampling Oversampling factor (BATT_MGMT_OVERSAMPLING_8X or BATT_MGMT_OVERSAMPLING_16X).
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* @param vddh_mv Pointer to store the result in millivolts.
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* @return 0 on success, negative errno on failure.
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*/
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int batt_mgmt_measure_vddh_mv(uint8_t oversampling, int32_t *vddh_mv);
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/**
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* @brief Get raw charger status (GPIO level).
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*
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* Returns the current logic level of the charger status pin (typically from ETA6003).
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* This is the **raw GPIO status**, not a processed state machine result.
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*
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* @return true if charger pin is high (e.g., battery is "full"), false if low.
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*/
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bool batt_mgmt_get_charger_status(void);
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/**
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* @brief Get processed battery state with blinking detection.
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*
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* Returns a derived state based on:
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* - USB VBUS presence (from usb_mgmt)
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* - Charger status GPIO level (from batt_mgmt_get_charger_status)
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* - Blinking detection (state changes within CONFIG_BATT_MGMT_CHG_BLINKING_WINDOW_MS)
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*
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* Note: This differs from batt_mgmt_get_charger_status() which returns the **raw** GPIO level.
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*
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* @return Battery state enum (DISCHARGING, FULL, CHARGING, or ERROR if blinking detected).
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*/
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batt_mgmt_state_t batt_mgmt_get_battery_state(void);
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#endif
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