esp32-alarm-clock/main/time_sync.h

/*
 * SPDX-FileCopyrightText: 2022 Helmut Pozimski <helmut@pozimski.eu>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 */
 
 void sntp_start(uint32_t sync_interval);
 void await_sntp_sync(void);