312 lines
8.8 KiB
C
312 lines
8.8 KiB
C
#include "wifi_manager.h"
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#include "esp_log.h"
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#include "esp_system.h"
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#include "nvs_flash.h"
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#include <string.h>
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static const char *TAG = "WIFI_MANAGER";
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// WiFi manager state
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static bool is_initialized = false;
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static wifi_status_t current_status = WIFI_STATUS_DISCONNECTED;
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static EventGroupHandle_t wifi_event_group = NULL;
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static wifi_event_callback_t user_callback = NULL;
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static char stored_ip[16] = {0};
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// Event group bits
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#define WIFI_CONNECTED_BIT BIT0
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#define WIFI_FAIL_BIT BIT1
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// Event handler instances
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static esp_event_handler_instance_t instance_any_id;
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static esp_event_handler_instance_t instance_got_ip;
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// WiFi event handler
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static void wifi_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data)
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{
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if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START)
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{
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ESP_LOGI(TAG, "WiFi started, connecting...");
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current_status = WIFI_STATUS_CONNECTING;
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esp_wifi_connect();
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if (user_callback)
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{
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user_callback(current_status, NULL);
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}
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}
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else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED)
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{
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ESP_LOGI(TAG, "WiFi disconnected, trying to reconnect...");
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current_status = WIFI_STATUS_DISCONNECTED;
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memset(stored_ip, 0, sizeof(stored_ip));
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esp_wifi_connect();
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xEventGroupClearBits(wifi_event_group, WIFI_CONNECTED_BIT);
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if (user_callback)
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{
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user_callback(current_status, NULL);
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}
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}
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else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP)
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{
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ip_event_got_ip_t *event = (ip_event_got_ip_t *)event_data;
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snprintf(stored_ip, sizeof(stored_ip), IPSTR, IP2STR(&event->ip_info.ip));
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ESP_LOGI(TAG, "WiFi connected! IP: %s", stored_ip);
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current_status = WIFI_STATUS_CONNECTED;
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xEventGroupSetBits(wifi_event_group, WIFI_CONNECTED_BIT);
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if (user_callback)
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{
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user_callback(current_status, stored_ip);
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}
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}
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}
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esp_err_t wifi_manager_init(const char *ssid, const char *password, wifi_event_callback_t event_callback)
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{
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if (is_initialized)
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{
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ESP_LOGW(TAG, "WiFi manager already initialized");
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return ESP_OK;
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}
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if (ssid == NULL || password == NULL)
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{
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ESP_LOGE(TAG, "SSID and password cannot be NULL");
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return ESP_ERR_INVALID_ARG;
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}
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ESP_LOGI(TAG, "Initializing WiFi manager");
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user_callback = event_callback;
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current_status = WIFI_STATUS_DISCONNECTED;
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// Create event group
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wifi_event_group = xEventGroupCreate();
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if (wifi_event_group == NULL)
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{
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ESP_LOGE(TAG, "Failed to create WiFi event group");
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return ESP_ERR_NO_MEM;
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}
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// Initialize netif
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ESP_ERROR_CHECK(esp_netif_init());
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// Create default event loop if not exists
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esp_err_t ret = esp_event_loop_create_default();
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if (ret != ESP_OK && ret != ESP_ERR_INVALID_STATE)
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{
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ESP_LOGE(TAG, "Failed to create event loop: %s", esp_err_to_name(ret));
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vEventGroupDelete(wifi_event_group);
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wifi_event_group = NULL;
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return ret;
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}
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// Create default WiFi STA
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esp_netif_create_default_wifi_sta();
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// Initialize WiFi
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ret = esp_wifi_init(&cfg);
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "Failed to initialize WiFi: %s", esp_err_to_name(ret));
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vEventGroupDelete(wifi_event_group);
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wifi_event_group = NULL;
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return ret;
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}
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// Register event handlers
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ret = esp_event_handler_instance_register(WIFI_EVENT,
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ESP_EVENT_ANY_ID,
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&wifi_event_handler,
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NULL,
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&instance_any_id);
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "Failed to register WiFi event handler: %s", esp_err_to_name(ret));
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esp_wifi_deinit();
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vEventGroupDelete(wifi_event_group);
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wifi_event_group = NULL;
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return ret;
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}
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ret = esp_event_handler_instance_register(IP_EVENT,
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IP_EVENT_STA_GOT_IP,
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&wifi_event_handler,
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NULL,
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&instance_got_ip);
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "Failed to register IP event handler: %s", esp_err_to_name(ret));
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esp_event_handler_instance_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id);
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esp_wifi_deinit();
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vEventGroupDelete(wifi_event_group);
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wifi_event_group = NULL;
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return ret;
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}
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// Configure WiFi
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wifi_config_t wifi_config = {
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.sta = {
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.threshold.authmode = WIFI_AUTH_WPA2_PSK,
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},
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};
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strncpy((char *)wifi_config.sta.ssid, ssid, sizeof(wifi_config.sta.ssid) - 1);
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strncpy((char *)wifi_config.sta.password, password, sizeof(wifi_config.sta.password) - 1);
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ret = esp_wifi_set_mode(WIFI_MODE_STA);
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "Failed to set WiFi mode: %s", esp_err_to_name(ret));
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wifi_manager_deinit();
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return ret;
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}
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ret = esp_wifi_set_config(WIFI_IF_STA, &wifi_config);
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "Failed to set WiFi config: %s", esp_err_to_name(ret));
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wifi_manager_deinit();
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return ret;
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}
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is_initialized = true;
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ESP_LOGI(TAG, "WiFi manager initialized successfully");
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return ESP_OK;
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}
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esp_err_t wifi_manager_start(void)
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{
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if (!is_initialized)
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{
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ESP_LOGE(TAG, "WiFi manager not initialized");
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return ESP_ERR_INVALID_STATE;
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}
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ESP_LOGI(TAG, "Starting WiFi");
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esp_err_t ret = esp_wifi_start();
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "Failed to start WiFi: %s", esp_err_to_name(ret));
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current_status = WIFI_STATUS_ERROR;
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return ret;
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}
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return ESP_OK;
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}
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esp_err_t wifi_manager_stop(void)
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{
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if (!is_initialized)
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{
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ESP_LOGE(TAG, "WiFi manager not initialized");
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return ESP_ERR_INVALID_STATE;
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}
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ESP_LOGI(TAG, "Stopping WiFi");
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current_status = WIFI_STATUS_DISCONNECTED;
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memset(stored_ip, 0, sizeof(stored_ip));
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esp_err_t ret = esp_wifi_stop();
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "Failed to stop WiFi: %s", esp_err_to_name(ret));
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return ret;
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}
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return ESP_OK;
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}
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wifi_status_t wifi_manager_get_status(void)
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{
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return current_status;
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}
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bool wifi_manager_wait_for_connection(uint32_t timeout_ms)
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{
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if (!is_initialized || wifi_event_group == NULL)
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{
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ESP_LOGE(TAG, "WiFi manager not initialized");
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return false;
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}
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TickType_t timeout_ticks = (timeout_ms == 0) ? portMAX_DELAY : pdMS_TO_TICKS(timeout_ms);
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EventBits_t bits = xEventGroupWaitBits(wifi_event_group,
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WIFI_CONNECTED_BIT,
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pdFALSE,
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pdFALSE,
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timeout_ticks);
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return (bits & WIFI_CONNECTED_BIT) != 0;
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}
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esp_err_t wifi_manager_get_ip_address(char *ip_str, size_t buffer_size)
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{
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if (ip_str == NULL || buffer_size < 16)
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{
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ESP_LOGE(TAG, "Invalid parameters for IP address");
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return ESP_ERR_INVALID_ARG;
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}
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if (current_status != WIFI_STATUS_CONNECTED || strlen(stored_ip) == 0)
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{
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ESP_LOGW(TAG, "WiFi not connected or no IP address available");
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return ESP_ERR_INVALID_STATE;
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}
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strncpy(ip_str, stored_ip, buffer_size - 1);
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ip_str[buffer_size - 1] = '\0';
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return ESP_OK;
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}
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bool wifi_manager_is_connected(void)
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{
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return current_status == WIFI_STATUS_CONNECTED;
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}
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esp_err_t wifi_manager_deinit(void)
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{
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if (!is_initialized)
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{
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ESP_LOGW(TAG, "WiFi manager not initialized");
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return ESP_OK;
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}
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ESP_LOGI(TAG, "Deinitializing WiFi manager");
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// Stop WiFi if running
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esp_wifi_stop();
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// Unregister event handlers
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if (instance_any_id != NULL)
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{
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esp_event_handler_instance_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id);
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instance_any_id = NULL;
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}
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if (instance_got_ip != NULL)
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{
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esp_event_handler_instance_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, instance_got_ip);
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instance_got_ip = NULL;
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}
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// Deinitialize WiFi
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esp_wifi_deinit();
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// Delete event group
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if (wifi_event_group != NULL)
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{
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vEventGroupDelete(wifi_event_group);
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wifi_event_group = NULL;
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}
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current_status = WIFI_STATUS_DISCONNECTED;
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memset(stored_ip, 0, sizeof(stored_ip));
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user_callback = NULL;
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is_initialized = false;
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ESP_LOGI(TAG, "WiFi manager deinitialized");
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return ESP_OK;
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} |