feat: 实现时间同步、NVS稳定性修复和ESP-IDF v6.0兼容性改进

main/nvs_safety/nvs_safety.c

@@ -0,0 +1,101 @@
+#include "nvs_safety.h"
+#include "mimi_config.h"
+
+#include <string.h>
+#include "esp_log.h"
+#include "nvs.h"
+
+static const char *TAG = "nvs_safety";
+
+/* Critical namespaces to check */
+static const char *critical_namespaces[] = {
+    MIMI_NVS_WIFI,
+    MIMI_NVS_LLM,
+    MIMI_NVS_TG,
+    MIMI_NVS_FEISHU,
+    MIMI_NVS_PROXY,
+    MIMI_NVS_SEARCH,
+    "system_config",
+};
+static const int critical_ns_count = sizeof(critical_namespaces) / sizeof(critical_namespaces[0]);
+
+/*
+ * Iterate through all keys in a namespace and validate each entry.
+ * Erase entries that appear corrupted (invalid length, invalid name, etc.).
+ * Returns number of corrupted entries found and removed.
+ */
+static int check_and_repair_namespace(const char *ns)
+{
+    nvs_handle_t nvs;
+    esp_err_t err = nvs_open(ns, NVS_READWRITE, &nvs);
+    if (err != ESP_OK) {
+        ESP_LOGW(TAG, "Cannot open namespace '%s': %s", ns, esp_err_to_name(err));
+        return 0;
+    }
+
+    nvs_iterator_t it = NULL;
+    esp_err_t find_err = nvs_entry_find_in_handle(nvs, NVS_TYPE_ANY, &it);
+    int corrupted = 0;
+
+    while (find_err == ESP_OK && it != NULL) {
+        nvs_entry_info_t info;
+        nvs_entry_info(it, &info);
+        find_err = nvs_entry_next(&it);
+
+        /* Try to read the entry to verify integrity */
+        char buf[512];
+        size_t len = sizeof(buf);
+        esp_err_t read_err = nvs_get_str(nvs, info.key, buf, &len);
+
+        if (read_err == ESP_ERR_NVS_INVALID_LENGTH ||
+            read_err == ESP_ERR_NVS_INVALID_NAME ||
+            read_err == ESP_ERR_NVS_NOT_FOUND) {
+            ESP_LOGW(TAG, "Corrupted entry in %s: key='%s' (err=%s), erasing",
+                     ns, info.key, esp_err_to_name(read_err));
+            nvs_erase_key(nvs, info.key);
+            corrupted++;
+        } else if (read_err == ESP_OK) {
+            /* Valid entry - check for obviously corrupted values */
+            if (len > 0 && buf[0] != '\0') {
+                /* Check that string is properly null-terminated within expected bounds */
+                if (len > sizeof(buf) - 1) {
+                    ESP_LOGW(TAG, "Oversized value in %s: key='%s' (len=%d), erasing",
+                             ns, info.key, (int)len);
+                    nvs_erase_key(nvs, info.key);
+                    corrupted++;
+                }
+            }
+        }
+        /* ESP_ERR_NVS_TYPE_MISMATCH is not an error for string-only namespaces */
+    }
+
+    if (corrupted > 0) {
+        nvs_commit(nvs);
+        ESP_LOGW(TAG, "Repaired %d corrupted entries in namespace '%s'", corrupted, ns);
+    }
+
+    if (it != NULL) {
+        nvs_release_iterator(it);
+    }
+    nvs_close(nvs);
+    return corrupted;
+}
+
+esp_err_t nvs_safety_check(void)
+{
+    ESP_LOGI(TAG, "Checking NVS integrity...");
+
+    int total_corrupted = 0;
+
+    for (int i = 0; i < critical_ns_count; i++) {
+        total_corrupted += check_and_repair_namespace(critical_namespaces[i]);
+    }
+
+    if (total_corrupted > 0) {
+        ESP_LOGW(TAG, "NVS safety check complete: %d corrupted entries repaired", total_corrupted);
+        return ESP_ERR_INVALID_STATE;
+    }
+
+    ESP_LOGI(TAG, "NVS integrity check passed");
+    return ESP_OK;
+}

main/nvs_safety/nvs_safety.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "esp_err.h"
+
+/**
+ * Check integrity of critical NVS namespaces at startup.
+ * Detects corrupted entries and attempts automatic repair.
+ *
+ * @return ESP_OK if all namespaces are healthy, ESP_ERR_INVALID_STATE if corruption was found and repaired
+ */
+esp_err_t nvs_safety_check(void);