feat(examples): Add multiple netif demo: eth+wifi+PPP

2025-07-23 07:17:29 +02:00 · 2023-04-26 19:10:16 +02:00
parent 4f1769ec71
commit 00d7c40848
12 changed files with 824 additions and 0 deletions
--- a/examples/esp_netif/multiple_netifs/main/wifi_connect.c
+++ b/examples/esp_netif/multiple_netifs/main/wifi_connect.c
@ -0,0 +1,128 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Unlicense OR CC0-1.0
+ */
+/* WiFi connection
+
+   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 "freertos/FreeRTOS.h"
+#include "freertos/event_groups.h"
+#include "esp_system.h"
+#include "esp_wifi.h"
+#include "esp_event.h"
+#include "esp_log.h"
+#include "iface_info.h"
+
+#define WIFI_CONNECTED_BIT BIT0
+#define WIFI_FAIL_BIT      BIT1
+
+
+static const char *TAG = "wifi_connect";
+static int s_retry_num = 0;
+static EventGroupHandle_t s_wifi_event_group;
+
+static void event_handler(void *args, esp_event_base_t event_base,
+                          int32_t event_id, void *event_data)
+{
+    struct iface_info_t *wifi_info = args;
+    if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
+        esp_wifi_connect();
+    } else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
+        wifi_info->connected = false;
+        if (s_retry_num < CONFIG_ESP_MAXIMUM_RETRY || CONFIG_ESP_MAXIMUM_RETRY == 0) {
+            esp_wifi_connect();
+            s_retry_num++;
+            ESP_LOGI(TAG, "retry to connect to the AP");
+        } else {
+            xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
+        }
+        ESP_LOGI(TAG, "connect to the AP fail");
+    } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
+        ip_event_got_ip_t *event = (ip_event_got_ip_t *) event_data;
+        const esp_netif_ip_info_t *ip_info = &event->ip_info;
+
+        ESP_LOGI(TAG, "WiFi station Got IP Address");
+        ESP_LOGI(TAG, "~~~~~~~~~~~");
+        ESP_LOGI(TAG, "IP:" IPSTR, IP2STR(&ip_info->ip));
+        ESP_LOGI(TAG, "MASK:" IPSTR, IP2STR(&ip_info->netmask));
+        ESP_LOGI(TAG, "GW:" IPSTR, IP2STR(&ip_info->gw));
+        ESP_LOGI(TAG, "~~~~~~~~~~~");
+
+        for (int i = 0; i < 2; ++i) {
+            esp_netif_get_dns_info(wifi_info->netif, i, &wifi_info->dns[i]);
+            ESP_LOGI(TAG, "DNS %i:" IPSTR, i, IP2STR(&wifi_info->dns[i].ip.u_addr.ip4));
+        }
+        ESP_LOGI(TAG, "~~~~~~~~~~~");
+        s_retry_num = 0;
+        xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
+        wifi_info->connected = true;
+    }
+}
+
+static void teardown_wifi(iface_info_t *info)
+{
+    esp_netif_action_disconnected(info->netif, 0, 0, 0);
+    esp_netif_action_stop(info->netif, 0, 0, 0);
+    esp_wifi_stop();
+    esp_wifi_deinit();
+    free(info);
+}
+
+iface_info_t *setup_wifi(int prio)
+{
+    struct iface_info_t *wifi_info = malloc(sizeof(iface_info_t));
+    assert(wifi_info);
+    wifi_info->teardown = teardown_wifi;
+    wifi_info->name = "WiFi station";
+    s_wifi_event_group = xEventGroupCreate();
+
+    esp_netif_inherent_config_t esp_netif_config = ESP_NETIF_INHERENT_DEFAULT_WIFI_STA();
+    esp_netif_config.route_prio = prio;
+    wifi_info->netif = esp_netif_create_wifi(WIFI_IF_STA, &esp_netif_config);
+    esp_wifi_set_default_wifi_sta_handlers();
+
+    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
+    ESP_ERROR_CHECK(esp_wifi_init(&cfg));
+
+    ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, event_handler, wifi_info));
+    ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, event_handler, wifi_info));
+
+    wifi_config_t wifi_config = {
+        .sta = {
+            .ssid = CONFIG_ESP_WIFI_SSID,
+            .password = CONFIG_ESP_WIFI_PASSWORD,
+        },
+    };
+    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
+    ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
+    ESP_ERROR_CHECK(esp_wifi_start() );
+
+    ESP_LOGI(TAG, "wifi_init_sta finished.");
+
+    /* Waiting until either the connection or a failure (connection failed or a timeout) */
+    EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group, (WIFI_CONNECTED_BIT | WIFI_FAIL_BIT), pdFALSE, pdFALSE, pdMS_TO_TICKS(5000));
+
+    if (bits & WIFI_CONNECTED_BIT) {
+        ESP_LOGI(TAG, "connected to ap SSID:%s password:%s",
+                 CONFIG_ESP_WIFI_SSID, CONFIG_ESP_WIFI_PASSWORD);
+    } else if (bits & WIFI_FAIL_BIT) {
+        ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s",
+                 CONFIG_ESP_WIFI_SSID, CONFIG_ESP_WIFI_PASSWORD);
+        teardown_wifi(wifi_info);
+        wifi_info = NULL;
+    } else if (CONFIG_ESP_MAXIMUM_RETRY == 0) {
+        ESP_LOGI(TAG, "No connection at the moment, will keep retrying...");
+    } else {
+        ESP_LOGE(TAG, "Failed to connect withing specified timeout");
+        teardown_wifi(wifi_info);
+        wifi_info = NULL;
+    }
+    return wifi_info;
+}