#ifndef _RFID_H_
#define _RFID_H_

typedef struct card {
    uint8_t uid_size;
    uint8_t uid[10];
    char *user;
    struct card *next;
} card_t;

extern card_t *head;
extern void rfid_add_card(const card_t *card);
extern void rfid_list_cards(void);

#endif /* _RFID_H_ */