File syn_ntp_server.c

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Zero-Heap NTP v4 Server Implementation.

• #include "syn_ntp_server.h"
• #include <string.h>

Public Functions

Type	Name
SYN_Status	syn_ntp_server_init (SYN_NTPServer * server, uint8_t stratum, uint32_t(*)(void) get_epoch_sec_cb) Initialize NTP Server Instance.
SYN_Status	syn_ntp_server_process_packet (SYN_NTPServer * server, const uint8_t request_pkt, uint8_t response_pkt) Process an incoming 48-byte NTP client request packet and format response.

Public Static Functions

Type	Name
void	write_u32_be (uint8_t * buf, uint32_t val) Write 32-bit integer into big-endian byte buffer.

Public Functions Documentation

function syn_ntp_server_init

Initialize NTP Server Instance.

SYN_Status syn_ntp_server_init (
    SYN_NTPServer * server,
    uint8_t stratum,
    uint32_t(*)(void) get_epoch_sec_cb
) 

Parameters:

• server Pointer to NTP server instance.
• stratum Server stratum level (e.g. 1 for GPS, 2 for SNTP relay).
• get_epoch_sec_cb Callback returning current UTC epoch seconds.

Returns:

SYN_OK on success, SYN_INVALID_PARAM if NULL.

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function syn_ntp_server_process_packet

Process an incoming 48-byte NTP client request packet and format response.

SYN_Status syn_ntp_server_process_packet (
    SYN_NTPServer * server,
    const uint8_t request_pkt,
    uint8_t response_pkt
) 

Parameters:

• server Pointer to NTP server context.
• request_pkt Raw 48-byte input request packet.
• response_pkt Output 48-byte response packet buffer.

Returns:

SYN_OK on success, SYN_INVALID_PARAM if NULL or invalid.

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Public Static Functions Documentation

function write_u32_be

Write 32-bit integer into big-endian byte buffer.

static void write_u32_be (
    uint8_t * buf,
    uint32_t val
) 

Parameters:

• buf Pointer to 4-byte destination buffer.
• val 32-bit unsigned integer value.

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The documentation for this class was generated from the following file src/syntropic/net/syn_ntp_server.c