235 lines
7.1 KiB
C
235 lines
7.1 KiB
C
#include "wifi_manager.h"
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#include "api_server.h"
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#include <esp_event.h>
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#include <esp_insights.h>
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#include <esp_log.h>
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#include <esp_system.h>
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#include <esp_wifi.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/event_groups.h>
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#include <freertos/task.h>
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#include <led_status.h>
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#include <lwip/err.h>
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#include <lwip/sys.h>
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#include <nvs_flash.h>
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#include <sdkconfig.h>
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#include <string.h>
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// Event group to signal when we are connected
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static EventGroupHandle_t s_wifi_event_group;
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// The bits for the event group
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#define WIFI_CONNECTED_BIT BIT0
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#define WIFI_FAIL_BIT BIT1
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static const char *TAG = "wifi_manager";
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static int s_retry_num = 0;
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static int s_current_network_index = 0;
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// WiFi network configuration structure
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typedef struct
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{
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const char *ssid;
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const char *password;
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} wifi_network_config_t;
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// Array of configured WiFi networks
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static const wifi_network_config_t s_wifi_networks[] = {
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#if CONFIG_WIFI_ENABLED
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{CONFIG_WIFI_SSID_1, CONFIG_WIFI_PASSWORD_1},
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#if CONFIG_WIFI_NETWORK_COUNT >= 2
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{CONFIG_WIFI_SSID_2, CONFIG_WIFI_PASSWORD_2},
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#endif
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#if CONFIG_WIFI_NETWORK_COUNT >= 3
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{CONFIG_WIFI_SSID_3, CONFIG_WIFI_PASSWORD_3},
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#endif
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#if CONFIG_WIFI_NETWORK_COUNT >= 4
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{CONFIG_WIFI_SSID_4, CONFIG_WIFI_PASSWORD_4},
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#endif
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#if CONFIG_WIFI_NETWORK_COUNT >= 5
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{CONFIG_WIFI_SSID_5, CONFIG_WIFI_PASSWORD_5},
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#endif
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#endif
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};
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static const int s_wifi_network_count = sizeof(s_wifi_networks) / sizeof(s_wifi_networks[0]);
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static void try_next_network(void);
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static void connect_to_network(int index)
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{
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#if CONFIG_WIFI_ENABLED
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if (index >= s_wifi_network_count)
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{
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ESP_LOGE(TAG, "No more networks to try");
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xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
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return;
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}
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const wifi_network_config_t *network = &s_wifi_networks[index];
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// Skip empty SSIDs
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if (network->ssid == NULL || strlen(network->ssid) == 0)
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{
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ESP_LOGW(TAG, "Skipping empty SSID at index %d", index);
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s_current_network_index++;
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s_retry_num = 0;
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try_next_network();
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return;
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}
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ESP_DIAG_EVENT(TAG, "Trying to connect to network %d: %s", index + 1, network->ssid);
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wifi_config_t wifi_config = {
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.sta =
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{
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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, network->ssid, sizeof(wifi_config.sta.ssid) - 1);
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strncpy((char *)wifi_config.sta.password, network->password, sizeof(wifi_config.sta.password) - 1);
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ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
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esp_wifi_connect();
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#endif
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}
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static void try_next_network(void)
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{
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#if CONFIG_WIFI_ENABLED
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s_current_network_index++;
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s_retry_num = 0;
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if (s_current_network_index < s_wifi_network_count)
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{
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connect_to_network(s_current_network_index);
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}
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else
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{
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ESP_LOGE(TAG, "Failed to connect to any configured network");
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led_behavior_t led0_behavior = {
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.index = 0,
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.mode = LED_MODE_BLINK,
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.color = {.red = 50, .green = 0, .blue = 0},
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.on_time_ms = 1000,
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.off_time_ms = 500,
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};
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led_status_set_behavior(led0_behavior);
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xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
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}
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#endif
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}
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static void 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 CONFIG_WIFI_ENABLED
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if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START)
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{
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led_behavior_t led0_behavior = {
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.index = 0,
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.mode = LED_MODE_BLINK,
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.color = {.red = 50, .green = 50, .blue = 0},
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.on_time_ms = 200,
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.off_time_ms = 200,
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};
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led_status_set_behavior(led0_behavior);
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connect_to_network(s_current_network_index);
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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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if (s_retry_num < CONFIG_WIFI_CONNECT_RETRIES)
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{
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led_behavior_t led0_behavior = {
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.index = 0,
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.mode = LED_MODE_BLINK,
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.color = {.red = 50, .green = 50, .blue = 0},
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.on_time_ms = 200,
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.off_time_ms = 200,
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};
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led_status_set_behavior(led0_behavior);
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s_retry_num++;
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ESP_DIAG_EVENT(TAG, "Retrying network %d (%d/%d)", s_current_network_index + 1, s_retry_num,
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CONFIG_WIFI_CONNECT_RETRIES);
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esp_wifi_connect();
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return;
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}
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// Retries exhausted for current network, try next one
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ESP_LOGW(TAG, "Failed to connect to network %d after %d retries, trying next...", s_current_network_index + 1,
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CONFIG_WIFI_CONNECT_RETRIES);
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try_next_network();
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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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led_behavior_t led0_behavior = {
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.index = 0,
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.mode = LED_MODE_SOLID,
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.color = {.red = 0, .green = 50, .blue = 0},
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};
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led_status_set_behavior(led0_behavior);
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ip_event_got_ip_t *event = (ip_event_got_ip_t *)event_data;
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ESP_DIAG_EVENT(TAG, "Got IP address:" IPSTR " (network %d: %s)", IP2STR(&event->ip_info.ip),
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s_current_network_index + 1, s_wifi_networks[s_current_network_index].ssid);
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s_retry_num = 0;
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xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
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}
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#endif
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}
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void wifi_manager_init()
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{
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#if CONFIG_WIFI_ENABLED
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s_wifi_event_group = xEventGroupCreate();
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s_current_network_index = 0;
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s_retry_num = 0;
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ESP_ERROR_CHECK(esp_netif_init());
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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esp_netif_create_default_wifi_sta();
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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esp_event_handler_instance_t instance_any_id;
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esp_event_handler_instance_t instance_got_ip;
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ESP_ERROR_CHECK(
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esp_event_handler_instance_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL, &instance_any_id));
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ESP_ERROR_CHECK(
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esp_event_handler_instance_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL, &instance_got_ip));
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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ESP_ERROR_CHECK(esp_wifi_start());
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ESP_DIAG_EVENT(TAG, "WiFi manager initialized with %d network(s), waiting for connection...", s_wifi_network_count);
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/* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or
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connection failed for all networks (WIFI_FAIL_BIT). The bits are set by event_handler() */
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EventBits_t bits =
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xEventGroupWaitBits(s_wifi_event_group, WIFI_CONNECTED_BIT | WIFI_FAIL_BIT, pdFALSE, pdFALSE, portMAX_DELAY);
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if (bits & WIFI_CONNECTED_BIT)
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{
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ESP_DIAG_EVENT(TAG, "Connected to AP SSID:%s", s_wifi_networks[s_current_network_index].ssid);
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api_server_config_t s_config = API_SERVER_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(api_server_start(&s_config));
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}
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else if (bits & WIFI_FAIL_BIT)
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{
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ESP_LOGE(TAG, "Failed to connect to any configured WiFi network");
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}
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else
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{
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ESP_LOGE(TAG, "Unexpected event");
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}
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#endif
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}
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