sntp.h

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/*
 * Copyright (c) 2017 Linaro Limited
 * Copyright (c) 2019 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_NET_SNTP_H_
#define ZEPHYR_INCLUDE_NET_SNTP_H_
 
#include <zephyr/net/socket.h>
#include <zephyr/net/socket_service.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct sntp_time {
        uint64_t seconds;        
        uint32_t fraction;       
#if defined(CONFIG_SNTP_UNCERTAINTY)
        uint64_t uptime_us;      
        uint32_t uncertainty_us; 
#endif
};
struct sntp_time {…};
 
struct sntp_ctx {
 
        struct {
                struct zsock_pollfd fds[1];
                int nfds;
                int fd;
        } sock;
        struct sntp_time expected_orig_ts;
};
struct sntp_ctx {…};
 
int sntp_init(struct sntp_ctx *ctx, struct sockaddr *addr,
              socklen_t addr_len);
 
int sntp_query(struct sntp_ctx *ctx, uint32_t timeout, struct sntp_time *ts);
 
int sntp_recv_response(struct sntp_ctx *ctx, uint32_t timeout, struct sntp_time *ts);
 
void sntp_close(struct sntp_ctx *ctx);
 
int sntp_init_async(struct sntp_ctx *ctx, struct sockaddr *addr, socklen_t addr_len,
                    const struct net_socket_service_desc *service);
 
int sntp_send_async(struct sntp_ctx *ctx);
 
int sntp_read_async(struct net_socket_service_event *event, struct sntp_time *ts);
 
void sntp_close_async(const struct net_socket_service_desc *service);
 
int sntp_simple(const char *server, uint32_t timeout,
                struct sntp_time *ts);
 
int sntp_simple_addr(struct sockaddr *addr, socklen_t addr_len, uint32_t timeout,
                     struct sntp_time *ts);
 
#ifdef __cplusplus
}
#endif
 
#endif