mirror of
https://github.com/espressif/esp-idf.git
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278 lines
10 KiB
C
278 lines
10 KiB
C
/*
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* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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/* Common functions for protocol examples, to establish Wi-Fi or Ethernet connection.
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <string.h>
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#include "protocol_examples_common.h"
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#include "example_common_private.h"
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#include "esp_log.h"
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#if CONFIG_EXAMPLE_CONNECT_WIFI
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static const char *TAG = "example_connect";
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static esp_netif_t *s_example_sta_netif = NULL;
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static SemaphoreHandle_t s_semph_get_ip_addrs = NULL;
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#if CONFIG_EXAMPLE_CONNECT_IPV6
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static SemaphoreHandle_t s_semph_get_ip6_addrs = NULL;
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#endif
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#if CONFIG_EXAMPLE_WIFI_SCAN_METHOD_FAST
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#define EXAMPLE_WIFI_SCAN_METHOD WIFI_FAST_SCAN
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#elif CONFIG_EXAMPLE_WIFI_SCAN_METHOD_ALL_CHANNEL
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#define EXAMPLE_WIFI_SCAN_METHOD WIFI_ALL_CHANNEL_SCAN
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#endif
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#if CONFIG_EXAMPLE_WIFI_CONNECT_AP_BY_SIGNAL
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#define EXAMPLE_WIFI_CONNECT_AP_SORT_METHOD WIFI_CONNECT_AP_BY_SIGNAL
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#elif CONFIG_EXAMPLE_WIFI_CONNECT_AP_BY_SECURITY
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#define EXAMPLE_WIFI_CONNECT_AP_SORT_METHOD WIFI_CONNECT_AP_BY_SECURITY
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#endif
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#if CONFIG_EXAMPLE_WIFI_AUTH_OPEN
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#define EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_OPEN
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#elif CONFIG_EXAMPLE_WIFI_AUTH_WEP
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#define EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WEP
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#elif CONFIG_EXAMPLE_WIFI_AUTH_WPA_PSK
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#define EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA_PSK
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#elif CONFIG_EXAMPLE_WIFI_AUTH_WPA2_PSK
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#define EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA2_PSK
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#elif CONFIG_EXAMPLE_WIFI_AUTH_WPA_WPA2_PSK
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#define EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA_WPA2_PSK
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#elif CONFIG_EXAMPLE_WIFI_AUTH_WPA2_ENTERPRISE
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#define EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA2_ENTERPRISE
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#elif CONFIG_EXAMPLE_WIFI_AUTH_WPA3_PSK
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#define EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA3_PSK
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#elif CONFIG_EXAMPLE_WIFI_AUTH_WPA2_WPA3_PSK
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#define EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA2_WPA3_PSK
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#elif CONFIG_EXAMPLE_WIFI_AUTH_WAPI_PSK
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#define EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WAPI_PSK
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#endif
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static int s_retry_num = 0;
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static void example_handler_on_wifi_disconnect(void *arg, esp_event_base_t event_base,
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int32_t event_id, void *event_data)
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{
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s_retry_num++;
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if (s_retry_num > CONFIG_EXAMPLE_WIFI_CONN_MAX_RETRY) {
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ESP_LOGI(TAG, "WiFi Connect failed %d times, stop reconnect.", s_retry_num);
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/* let example_wifi_sta_do_connect() return */
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if (s_semph_get_ip_addrs) {
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xSemaphoreGive(s_semph_get_ip_addrs);
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}
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#if CONFIG_EXAMPLE_CONNECT_IPV6
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if (s_semph_get_ip6_addrs) {
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xSemaphoreGive(s_semph_get_ip6_addrs);
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}
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#endif
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return;
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}
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ESP_LOGI(TAG, "Wi-Fi disconnected, trying to reconnect...");
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esp_err_t err = esp_wifi_connect();
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if (err == ESP_ERR_WIFI_NOT_STARTED) {
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return;
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}
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ESP_ERROR_CHECK(err);
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}
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static void example_handler_on_wifi_connect(void *esp_netif, esp_event_base_t event_base,
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int32_t event_id, void *event_data)
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{
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#if CONFIG_EXAMPLE_CONNECT_IPV6
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esp_netif_create_ip6_linklocal(esp_netif);
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#endif // CONFIG_EXAMPLE_CONNECT_IPV6
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}
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static void example_handler_on_sta_got_ip(void *arg, esp_event_base_t event_base,
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int32_t event_id, void *event_data)
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{
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s_retry_num = 0;
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ip_event_got_ip_t *event = (ip_event_got_ip_t *)event_data;
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if (!example_is_our_netif(EXAMPLE_NETIF_DESC_STA, event->esp_netif)) {
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return;
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}
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ESP_LOGI(TAG, "Got IPv4 event: Interface \"%s\" address: " IPSTR, esp_netif_get_desc(event->esp_netif), IP2STR(&event->ip_info.ip));
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if (s_semph_get_ip_addrs) {
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xSemaphoreGive(s_semph_get_ip_addrs);
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} else {
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ESP_LOGI(TAG, "- IPv4 address: " IPSTR ",", IP2STR(&event->ip_info.ip));
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}
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}
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#if CONFIG_EXAMPLE_CONNECT_IPV6
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static void example_handler_on_sta_got_ipv6(void *arg, esp_event_base_t event_base,
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int32_t event_id, void *event_data)
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{
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ip_event_got_ip6_t *event = (ip_event_got_ip6_t *)event_data;
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if (!example_is_our_netif(EXAMPLE_NETIF_DESC_STA, event->esp_netif)) {
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return;
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}
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esp_ip6_addr_type_t ipv6_type = esp_netif_ip6_get_addr_type(&event->ip6_info.ip);
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ESP_LOGI(TAG, "Got IPv6 event: Interface \"%s\" address: " IPV6STR ", type: %s", esp_netif_get_desc(event->esp_netif),
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IPV62STR(event->ip6_info.ip), example_ipv6_addr_types_to_str[ipv6_type]);
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if (ipv6_type == EXAMPLE_CONNECT_PREFERRED_IPV6_TYPE) {
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if (s_semph_get_ip6_addrs) {
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xSemaphoreGive(s_semph_get_ip6_addrs);
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} else {
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ESP_LOGI(TAG, "- IPv6 address: " IPV6STR ", type: %s", IPV62STR(event->ip6_info.ip), example_ipv6_addr_types_to_str[ipv6_type]);
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}
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}
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}
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#endif // CONFIG_EXAMPLE_CONNECT_IPV6
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void example_wifi_start(void)
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{
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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_netif_inherent_config_t esp_netif_config = ESP_NETIF_INHERENT_DEFAULT_WIFI_STA();
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// Warning: the interface desc is used in tests to capture actual connection details (IP, gw, mask)
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esp_netif_config.if_desc = EXAMPLE_NETIF_DESC_STA;
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esp_netif_config.route_prio = 128;
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s_example_sta_netif = esp_netif_create_wifi(WIFI_IF_STA, &esp_netif_config);
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esp_wifi_set_default_wifi_sta_handlers();
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ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
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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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}
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void example_wifi_stop(void)
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{
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esp_err_t err = esp_wifi_stop();
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if (err == ESP_ERR_WIFI_NOT_INIT) {
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return;
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}
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ESP_ERROR_CHECK(err);
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ESP_ERROR_CHECK(esp_wifi_deinit());
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ESP_ERROR_CHECK(esp_wifi_clear_default_wifi_driver_and_handlers(s_example_sta_netif));
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esp_netif_destroy(s_example_sta_netif);
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s_example_sta_netif = NULL;
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}
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esp_err_t example_wifi_sta_do_connect(wifi_config_t wifi_config, bool wait)
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{
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if (wait) {
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s_semph_get_ip_addrs = xSemaphoreCreateBinary();
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if (s_semph_get_ip_addrs == NULL) {
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return ESP_ERR_NO_MEM;
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}
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#if CONFIG_EXAMPLE_CONNECT_IPV6
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s_semph_get_ip6_addrs = xSemaphoreCreateBinary();
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if (s_semph_get_ip6_addrs == NULL) {
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vSemaphoreDelete(s_semph_get_ip_addrs);
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return ESP_ERR_NO_MEM;
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}
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#endif
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}
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s_retry_num = 0;
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, &example_handler_on_wifi_disconnect, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &example_handler_on_sta_got_ip, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, WIFI_EVENT_STA_CONNECTED, &example_handler_on_wifi_connect, s_example_sta_netif));
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#if CONFIG_EXAMPLE_CONNECT_IPV6
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_GOT_IP6, &example_handler_on_sta_got_ipv6, NULL));
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#endif
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ESP_LOGI(TAG, "Connecting to %s...", wifi_config.sta.ssid);
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ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
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esp_err_t ret = esp_wifi_connect();
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "WiFi connect failed! ret:%x", ret);
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return ret;
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}
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if (wait) {
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ESP_LOGI(TAG, "Waiting for IP(s)");
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#if CONFIG_EXAMPLE_CONNECT_IPV4
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xSemaphoreTake(s_semph_get_ip_addrs, portMAX_DELAY);
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#endif
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#if CONFIG_EXAMPLE_CONNECT_IPV6
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xSemaphoreTake(s_semph_get_ip6_addrs, portMAX_DELAY);
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#endif
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if (s_retry_num > CONFIG_EXAMPLE_WIFI_CONN_MAX_RETRY) {
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return ESP_FAIL;
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}
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}
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return ESP_OK;
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}
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esp_err_t example_wifi_sta_do_disconnect(void)
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{
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ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, &example_handler_on_wifi_disconnect));
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &example_handler_on_sta_got_ip));
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ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, WIFI_EVENT_STA_CONNECTED, &example_handler_on_wifi_connect));
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#if CONFIG_EXAMPLE_CONNECT_IPV6
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_GOT_IP6, &example_handler_on_sta_got_ipv6));
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#endif
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if (s_semph_get_ip_addrs) {
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vSemaphoreDelete(s_semph_get_ip_addrs);
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}
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#if CONFIG_EXAMPLE_CONNECT_IPV6
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if (s_semph_get_ip6_addrs) {
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vSemaphoreDelete(s_semph_get_ip6_addrs);
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}
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#endif
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return esp_wifi_disconnect();
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}
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void example_wifi_shutdown(void)
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{
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example_wifi_sta_do_disconnect();
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example_wifi_stop();
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}
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esp_err_t example_wifi_connect(void)
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{
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ESP_LOGI(TAG, "Start example_connect.");
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example_wifi_start();
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wifi_config_t wifi_config = {
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.sta = {
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#if !CONFIG_EXAMPLE_WIFI_SSID_PWD_FROM_STDIN
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.ssid = CONFIG_EXAMPLE_WIFI_SSID,
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.password = CONFIG_EXAMPLE_WIFI_PASSWORD,
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#endif
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.scan_method = EXAMPLE_WIFI_SCAN_METHOD,
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.sort_method = EXAMPLE_WIFI_CONNECT_AP_SORT_METHOD,
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.threshold.rssi = CONFIG_EXAMPLE_WIFI_SCAN_RSSI_THRESHOLD,
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.threshold.authmode = EXAMPLE_WIFI_SCAN_AUTH_MODE_THRESHOLD,
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},
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};
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#if CONFIG_EXAMPLE_WIFI_SSID_PWD_FROM_STDIN
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example_configure_stdin_stdout();
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char buf[sizeof(wifi_config.sta.ssid)+sizeof(wifi_config.sta.password)+2] = {0};
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ESP_LOGI(TAG, "Please input ssid password:");
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fgets(buf, sizeof(buf), stdin);
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int len = strlen(buf);
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buf[len-1] = '\0'; /* removes '\n' */
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memset(wifi_config.sta.ssid, 0, sizeof(wifi_config.sta.ssid));
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char *rest = NULL;
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char *temp = strtok_r(buf, " ", &rest);
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strncpy((char*)wifi_config.sta.ssid, temp, sizeof(wifi_config.sta.ssid));
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memset(wifi_config.sta.password, 0, sizeof(wifi_config.sta.password));
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temp = strtok_r(NULL, " ", &rest);
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if (temp) {
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strncpy((char*)wifi_config.sta.password, temp, sizeof(wifi_config.sta.password));
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} else {
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wifi_config.sta.threshold.authmode = WIFI_AUTH_OPEN;
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}
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#endif
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return example_wifi_sta_do_connect(wifi_config, true);
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}
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#endif /* CONFIG_EXAMPLE_CONNECT_WIFI */
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