/**
 * @file battery.c
 * @brief Battery monitoring utilities
 */
#include "esp_log.h"
#include "app_main.h"

static const char *TAG = "battery";

/* Battery percentage lookup table (simple linear for now) */
uint8_t battery_get_percent(uint16_t mv)
{
    if (mv >= BAT_FULL_MV) return 100;
    if (mv <= BAT_EMPTY_MV) return 0;
    
    /* Linear interpolation between EMPTY and FULL */
    return (uint8_t)((mv - BAT_EMPTY_MV) * 100 / (BAT_FULL_MV - BAT_EMPTY_MV));
}