chore: import upstream snapshot with attribution

2026-07-13 13:04:25 +08:00
commit 548b49ebc0
20937 changed files with 5455372 additions and 0 deletions
@@ -0,0 +1,132 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <string.h>
+#include <stdlib.h>
+#include <time.h>
+#include <sys/time.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "esp_wifi.h"
+#include "esp_event.h"
+#include "esp_log.h"
+#include "esp_system.h"
+#include "nvs_flash.h"
+#include "nvs.h"
+#include "esp_netif.h"
+#include "esp_netif_sntp.h"
+
+#include "lwip/err.h"
+#include "lwip/sockets.h"
+#include "lwip/sys.h"
+#include "lwip/netdb.h"
+#include "lwip/dns.h"
+#include "time_sync.h"
+
+static const char *TAG = "time_sync";
+
+#define STORAGE_NAMESPACE "storage"
+
+void initialize_sntp(void)
+{
+    ESP_LOGI(TAG, "Initializing SNTP");
+    esp_sntp_config_t config = ESP_NETIF_SNTP_DEFAULT_CONFIG_MULTIPLE(2,
+                               ESP_SNTP_SERVER_LIST("time.windows.com", "pool.ntp.org" ) );
+    esp_netif_sntp_init(&config);
+}
+
+static esp_err_t obtain_time(void)
+{
+    // wait for time to be set
+    int retry = 0;
+    const int retry_count = 10;
+    while (esp_netif_sntp_sync_wait(pdMS_TO_TICKS(2000)) != ESP_OK && ++retry < retry_count) {
+        ESP_LOGI(TAG, "Waiting for system time to be set... (%d/%d)", retry, retry_count);
+    }
+    if (retry == retry_count) {
+        return ESP_FAIL;
+    }
+    return ESP_OK;
+}
+
+esp_err_t fetch_and_store_time_in_nvs(void *args)
+{
+    nvs_handle_t my_handle = 0;
+    esp_err_t err;
+
+    initialize_sntp();
+    if (obtain_time() != ESP_OK) {
+        err = ESP_FAIL;
+        goto exit;
+    }
+
+    time_t now;
+    time(&now);
+
+    //Open
+    err = nvs_open(STORAGE_NAMESPACE, NVS_READWRITE, &my_handle);
+    if (err != ESP_OK) {
+        goto exit;
+    }
+
+    //Write
+    err = nvs_set_i64(my_handle, "timestamp", now);
+    if (err != ESP_OK) {
+        goto exit;
+    }
+
+    err = nvs_commit(my_handle);
+    if (err != ESP_OK) {
+        goto exit;
+    }
+
+exit:
+    if (my_handle != 0) {
+        nvs_close(my_handle);
+    }
+    esp_netif_sntp_deinit();
+
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Error updating time in nvs");
+    } else {
+        ESP_LOGI(TAG, "Updated time in NVS");
+    }
+    return err;
+}
+
+esp_err_t update_time_from_nvs(void)
+{
+    nvs_handle_t my_handle = 0;
+    esp_err_t err;
+
+    err = nvs_open(STORAGE_NAMESPACE, NVS_READWRITE, &my_handle);
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Error opening NVS");
+        goto exit;
+    }
+
+    int64_t timestamp = 0;
+
+    err = nvs_get_i64(my_handle, "timestamp", &timestamp);
+    if (err == ESP_ERR_NVS_NOT_FOUND) {
+        ESP_LOGI(TAG, "Time not found in NVS. Syncing time from SNTP server.");
+        if (fetch_and_store_time_in_nvs(NULL) != ESP_OK) {
+            err = ESP_FAIL;
+        } else {
+            err = ESP_OK;
+        }
+    } else if (err == ESP_OK) {
+        struct timeval get_nvs_time;
+        get_nvs_time.tv_sec = timestamp;
+        settimeofday(&get_nvs_time, NULL);
+    }
+
+exit:
+    if (my_handle != 0) {
+        nvs_close(my_handle);
+    }
+    return err;
+}