dcf77.h

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/*
 * Copyright 2019 HAW Hamburg
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include <stdint.h>
#include <stdlib.h>
#include <inttypes.h>
#include "xtimer.h"
#include "time.h"
#include "periph/gpio.h"
#include "dcf77_internal.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* forward-declaration for dcf77_tick_cb_t */
struct dcf77;

typedef void(*dcf77_tick_cb_t)(struct dcf77 *dev, void *arg);

enum {
    DCF77_OK          =  0,       
    DCF77_NOCSUM      = -1,       
    DCF77_TIMEOUT     = -2,       
    DCF77_INIT_ERROR  = -3        
};

typedef struct {
    gpio_t pin;             
    gpio_mode_t in_mode;    
} dcf77_params_t;

typedef struct dcf77 {
    dcf77_params_t params;      
    dcf77_bits_t bitseq;        
    dcf77_bits_t last_bitseq;   
    uint32_t startTime;         
    uint8_t internal_state;     
    uint8_t bitCounter;         
    dcf77_tick_cb_t tick_cb;    
    void *tick_cb_args;         
} dcf77_t;

int dcf77_init(dcf77_t *dev, const dcf77_params_t *params);

int dcf77_get_time(dcf77_t *dev, struct tm *time);

void dcf77_set_tick_cb(dcf77_t *dev, dcf77_tick_cb_t cb, void *arg);
 
#ifdef __cplusplus
}
#endif