ntp.h

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/*
 * Copyright (c) 2022 Geoff Simmons <geoff@simmons.de>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 * See LICENSE
 */
 
#include "pico/time.h"
 
#ifndef _NTP_H
#define _NTP_H
 
#include <stdbool.h>
 
#ifndef NTP_DEFAULT_SERVERS
#define NTP_DEFAULT_SERVERS                 \
    "0.slimhazard.pool.ntp.org 1.slimhazard.pool.ntp.org "  \
    "2.slimhazard.pool.ntp.org 3.slimhazard.pool.ntp.org"
#endif
 
#ifndef NTP_DEFAULT_RESPONSE_TMO_S
#define NTP_DEFAULT_RESPONSE_TMO_S  (15)
#endif
 
#ifndef NTP_DEFAULT_RETRY_INTVL_S
#define NTP_DEFAULT_RETRY_INTVL_S   (15)
#endif
 
#ifndef NTP_DEFAULT_DNS_TMO_S
#define NTP_DEFAULT_DNS_TMO_S       (10)
#endif
 
#ifndef NTP_DEFAULT_REFRESH_INTVL_S
#define NTP_DEFAULT_REFRESH_INTVL_S (30000)
#endif
 
struct ntp_cfg {
    const char  *servers;
    unsigned    response_tmo_s;
    unsigned    retry_intvl_s;
    unsigned    dns_tmo_s;
    unsigned    refresh_intvl_s;
};
 
static const char *wday_name[] = {
    "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
};
 
static const char *month_name[] = {
    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
};
 
void time_init(struct ntp_cfg *cfg);
void time_fini(void);
 
bool rtc_synced(void);
 
static inline struct ntp_cfg
ntp_default_cfg(void)
{
    return (struct ntp_cfg) {
        .servers        = NTP_DEFAULT_SERVERS,
        .response_tmo_s     = NTP_DEFAULT_RESPONSE_TMO_S,
        .retry_intvl_s      = NTP_DEFAULT_RETRY_INTVL_S,
        .dns_tmo_s      = NTP_DEFAULT_DNS_TMO_S,
        .refresh_intvl_s    = NTP_DEFAULT_REFRESH_INTVL_S,
    };
}
 
#endif /* _NTP_H */