esp32s3 SNTP 时间校准不对，用户时间与实际时间相差十几个小时

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/* LwIP SNTP example

This example code is in the Public Domain (or CC0 licensed, at your option.)

Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_event.h"
#include "esp_log.h"
#include "esp_attr.h"
#include "esp_sleep.h"
#include "nvs_flash.h"
#include "esp_sntp.h"

static const char *TAG = "stnp";



static void obtain_time(void);
static void init_sntp(void);


void sntp_sync_time(struct timeval *tv)
{
settimeofday(tv, NULL);
ESP_LOGI(TAG, "Time is synchronized from custom code");
sntp_set_sync_status(SNTP_SYNC_STATUS_COMPLETED);
}


void time_sync_notification_cb(struct timeval *tv)
{
ESP_LOGI(TAG, "Notification of a time synchronization event");
}

void user_sntp_init(void)
{
time_t now;
struct tm timeinfo;
time(&now);
localtime_r(&now, &timeinfo);
// Is time set? If not, tm_year will be (1970 - 1900).
if (timeinfo.tm_year < (2016 - 1900)) {
ESP_LOGI(TAG, "Time is not set yet. Connecting to WiFi and getting time over NTP.");
obtain_time();
// update 'now' variable with current time
time(&now);
}
else {
// add 500 ms error to the current system time.
// Only to demonstrate a work of adjusting method!
{
ESP_LOGI(TAG, "Add a error for test adjtime");
struct timeval tv_now;
gettimeofday(&tv_now, NULL);
int64_t cpu_time = (int64_t)tv_now.tv_sec * 1000000L + (int64_t)tv_now.tv_usec;
int64_t error_time = cpu_time + 500 * 1000L;
struct timeval tv_error = { .tv_sec = error_time / 1000000L, .tv_usec = error_time % 1000000L };
settimeofday(&tv_error, NULL);
}
ESP_LOGI(TAG, "Time was set, now just adjusting it. Use SMOOTH SYNC method.");
obtain_time();
time(&now);
}

if (sntp_get_sync_mode() == SNTP_SYNC_MODE_SMOOTH) {
struct timeval outdelta;
while (sntp_get_sync_status() == SNTP_SYNC_STATUS_IN_PROGRESS) {
adjtime(NULL, &outdelta);
ESP_LOGI(TAG, "Waiting for adjusting time ... outdelta = %li sec: %li ms: %li us",
(long)outdelta.tv_sec,
outdelta.tv_usec/1000,
outdelta.tv_usec%1000);
vTaskDelay(2000 / portTICK_PERIOD_MS);
}
}

}

static void obtain_time(void)
{
init_sntp();
time_t now = 0;
struct tm timeinfo = { 0 };
setenv("TZ", "CST-8", 1);
tzset();
while (sntp_get_sync_status() == SNTP_SYNC_STATUS_RESET) {
ESP_LOGI(TAG, "Waiting for system time to be set... ");
vTaskDelay(2000 / portTICK_PERIOD_MS);
}
time(&now);
localtime_r(&now, &timeinfo);

}

void init_sntp(void)
{
ESP_LOGI(TAG, "Initializing SNTP");
esp_sntp_setoperatingmode(SNTP_OPMODE_POLL);
esp_sntp_setservername(0, "pool.ntp.org");
esp_sntp_setservername(1, "time.nist.gov");
esp_sntp_setservername(2, "time.apple.com");
esp_sntp_setservername(3, "ntp.ntsc.ac.cn");
sntp_set_time_sync_notification_cb(time_sync_notification_cb);
sntp_set_sync_mode(SNTP_SYNC_MODE_SMOOTH);
esp_sntp_init();
}