#ifndef __LTC2941_BATTERY_H
#define __LTC2941_BATTERY_H

#include <stdint.h>

typedef enum {
    LTC2941_OK,
    LTC2941_ERROR
} ltc2941_ret_t;

typedef enum {
    LTC2941_ALERT_3_0V = 0x03,
    LTC2941_ALERT_2_9V = 0x02,
    LTC2941_ALERT_2_8V = 0x01,
    LTC2941_ALERT_OFF  = 0x00
} ltc2941_battery_alert_t;

typedef enum {
    LTC2941_PRE_1   = 0x00,
    LTC2941_PRE_2   = 0x01,
    LTC2941_PRE_4   = 0x02,
    LTC2941_PRE_8   = 0x03,
    LTC2941_PRE_16  = 0x04,
    LTC2941_PRE_32  = 0x05,
    LTC2941_PRE_64  = 0x06,
    LTC2941_PRE_128 = 0x07
} ltc2941_prescale_t;

typedef enum {
    LTC2941_ALERT_DISABLED = 0x00,
    LTC2941_ALERT_CC = 0x01,
    LTC2941_ALERT_AL = 0x02
} ltc2941_alert_mode_t;

typedef struct {
    ltc2941_ret_t (*write_register_cb)(void * handle, uint8_t reg, uint8_t value);
    ltc2941_ret_t (*read_register_cb)(void *handle, uint8_t reg, uint8_t *value);
} ltc2941_cb_t;

typedef struct {
    ltc2941_prescale_t prescaler;
    ltc2941_alert_mode_t alert_mode;
    ltc2941_battery_alert_t alert_level; 
} ltc2941_config_t;

typedef struct {
    ltc2941_cb_t cb;
    ltc2941_config_t config;
    void *user_data;
} ltc2941_t;

#define LTC2941_STATUS_CHIPID    (1 << 7U)
#define LTC2941_STATUS_OVERFLOW  (1 << 5U)
#define LTC2941_STATUS_ALRT_HIGH (1 << 3U)
#define LTC2941_STATUS_ALRT_LOW  (1 << 2U)
#define LTC2941_STATUS_ALRT_VBAT (1 << 1U)
#define LTC2941_STATUS_ALRT_UVLO 1U

#endif