crosspoint-reader-mod/src/util/TimeSync.cpp

#include "TimeSync.h"

#include <Logging.h>
#include <esp_sntp.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>

#include <cstdlib>

#include "CrossPointSettings.h"

namespace TimeSync {

void startNtpSync() {
  if (esp_sntp_enabled()) {
    esp_sntp_stop();
  }

  // Apply timezone so NTP-synced time is displayed correctly
  setenv("TZ", SETTINGS.getTimezonePosixStr(), 1);
  tzset();

  esp_sntp_setoperatingmode(ESP_SNTP_OPMODE_POLL);
  esp_sntp_setservername(0, "pool.ntp.org");
  esp_sntp_init();

  LOG_DBG("NTP", "SNTP service started");
}

bool waitForNtpSync(int timeoutMs) {
  startNtpSync();

  const int intervalMs = 100;
  const int maxRetries = timeoutMs / intervalMs;
  int retry = 0;

  while (sntp_get_sync_status() != SNTP_SYNC_STATUS_COMPLETED && retry < maxRetries) {
    vTaskDelay(intervalMs / portTICK_PERIOD_MS);
    retry++;
  }

  if (retry < maxRetries) {
    LOG_DBG("NTP", "Time synced after %d ms", retry * intervalMs);
    return true;
  }

  LOG_DBG("NTP", "Sync timeout after %d ms", timeoutMs);
  return false;
}

void stopNtpSync() {
  if (esp_sntp_enabled()) {
    esp_sntp_stop();
    LOG_DBG("NTP", "SNTP service stopped");
  }
}

}  // namespace TimeSync