fuel_gauge.h

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#pragma once
 
#include <stdbool.h>
#include <stdint.h>
#include "esp_err.h"
#include "driver/i2c_master.h"


typedef struct {
    float soc_pct;      
    float voltage_v;    
    float current_ma;   
    float rep_cap_mah;  
    float tte_s;        
    float ttf_s;        
    float age_pct;      
    float die_temp_c;   
    float cycles;       
} fuel_gauge_data_t;

esp_err_t fuel_gauge_init(i2c_master_bus_handle_t bus);

esp_err_t fuel_gauge_read(fuel_gauge_data_t *out);

typedef struct {
    bool     por;               
    uint16_t design_cap_raw;    
    uint16_t design_cap_want;   
    uint16_t ichg_term_raw;     
    uint16_t ichg_term_want;    
    uint16_t vempty_raw;        
    uint16_t vempty_want;       
    float    full_cap_rep_mah;  
    float    full_cap_nom_mah;  
} fuel_gauge_debug_t;

esp_err_t fuel_gauge_read_debug(fuel_gauge_debug_t *out);

esp_err_t fuel_gauge_reload_ez(void);