ntp.h

Go to the documentation of this file.

#ifndef _NTP_H
#define _NTP_H
 
#include <string.h>
#include <time.h>
 
#include "pico/stdlib.h"
#include "pico/cyw43_arch.h"
 
#include "lwip/dns.h"
#include "lwip/pbuf.h"
#include "lwip/udp.h"
 
#define NTP_SERVER "pool.ntp.org"
#define NTP_MSG_LEN 48
#define NTP_PORT 123
#define NTP_DELTA 2208988800
#define NTP_TEST_TIME (30 * 1000)
#define NTP_RESEND_TIME (10 * 1000)
 
extern volatile struct tm *utc;
 
extern volatile struct tm *current_utc;
 
typedef struct NTP_T_
{
    ip_addr_t ntp_server_address;
    bool dns_request_sent;
    struct udp_pcb *ntp_pcb;
    absolute_time_t ntp_test_time;
    alarm_id_t ntp_resend_alarm;
} NTP_T;
 
static void ntp_result(NTP_T* state, int status, time_t *result);
 
static int64_t ntp_failed_handler(alarm_id_t id, void *user_data);
 
static void ntp_request(NTP_T *state);
 
static int64_t ntp_failed_handler(alarm_id_t id, void *user_data);
 
static void ntp_dns_found(const char *hostname, const ip_addr_t *ipaddr, void *arg);
 
static void ntp_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port);
 
static NTP_T* ntp_init(void);
 
void ntp_deinit(void);
 
void ntp_update_time(void);
 
#endif