ds3231.h

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#ifndef DS3231_H
#define DS3231_H
 
#include <stdint.h>
#include <stdbool.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* -------------------------------------------------------------------------- */
/* ENUMS Y STRUCTS                                                             */
/* -------------------------------------------------------------------------- */
 
typedef enum {
    DS3231_OK               =  0, // OK
    DS3231_ERROR            = -1, // Error genérico de HAL
    DS3231_TIMEOUT          = -2, // Timeout de comunicación I2C
    DS3231_NOT_READY        = -3, // El DS3231 no respondió al address
    DS3231_INVALID_PARAM    = -4, // Parámetros inválidos
    DS3231_BUSY             = -5, // HAL Busy
} DS3231_Status;

typedef struct {
    uint8_t seconds; 
    uint8_t minutes; 
    uint8_t hours;   
    uint8_t day;     
    uint8_t date;    
    uint8_t month;   
    uint8_t year;    
} DS3231_Time;

static inline uint8_t dec2bcd(uint8_t value) { 
    return (uint8_t)(((value/10) << 4) | (value % 10)); 
}
static inline uint8_t bcd2dec(uint8_t value) { 
    return (uint8_t)(((value >> 4) * 10) + (value & 0x0F)); 
}
 
/* -------------------------------------------------------------------------- */
/* API pública                                                                */
/* -------------------------------------------------------------------------- */

DS3231_Status DS3231_Init(void);

DS3231_Status DS3231_ReadTime(DS3231_Time *time);
 

DS3231_Status DS3231_SetTime(uint8_t year, uint8_t month, uint8_t date, uint8_t day, uint8_t hour, uint8_t min, uint8_t sec);

 
#ifdef __cplusplus
}
#endif
 
#endif /* DS3231_H */