159 lines
4.6 KiB
C
159 lines
4.6 KiB
C
/* ESP BLE Mesh Example
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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 <stdio.h>
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#include <string.h>
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#include "esp_err.h"
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#include "esp_log.h"
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#include "wifi_connect.h"
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#include <string.h>
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#include "sdkconfig.h"
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#include "esp_event.h"
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#include "esp_wifi.h"
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#include "esp_wifi_default.h"
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#include "esp_log.h"
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#include "esp_netif.h"
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#include "driver/gpio.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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#include "lwip/err.h"
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#include "lwip/sys.h"
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#define GOT_IPV4_BIT BIT(0)
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#define CONNECTED_BITS (GOT_IPV4_BIT)
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static EventGroupHandle_t s_connect_event_group;
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static esp_ip4_addr_t s_ip_addr;
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static const char *s_connection_name;
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static esp_netif_t *s_example_esp_netif = NULL;
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static const char *TAG = "example_connect";
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/* set up connection, Wi-Fi or Ethernet */
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static void start(const char *ssid, const char *passwd);
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/* tear down connection, release resources */
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static void stop(void);
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static void on_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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ESP_LOGI(TAG, "Got IP event!");
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ip_event_got_ip_t *event = (ip_event_got_ip_t *)event_data;
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memcpy(&s_ip_addr, &event->ip_info.ip, sizeof(s_ip_addr));
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xEventGroupSetBits(s_connect_event_group, GOT_IPV4_BIT);
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}
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esp_err_t example_connect(const char *ssid, const char *passwd)
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{
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if (s_connect_event_group != NULL) {
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return ESP_ERR_INVALID_STATE;
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}
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s_connect_event_group = xEventGroupCreate();
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start(ssid, passwd);
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ESP_ERROR_CHECK(esp_register_shutdown_handler(&stop));
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ESP_LOGI(TAG, "Waiting for IP");
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xEventGroupWaitBits(s_connect_event_group, CONNECTED_BITS, true, true, portMAX_DELAY);
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ESP_LOGI(TAG, "Connected to %s", s_connection_name);
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ESP_LOGI(TAG, "IPv4 address: " IPSTR, IP2STR(&s_ip_addr));
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return ESP_OK;
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}
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esp_err_t example_disconnect(void)
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{
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if (s_connect_event_group == NULL) {
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return ESP_ERR_INVALID_STATE;
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}
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vEventGroupDelete(s_connect_event_group);
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s_connect_event_group = NULL;
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stop();
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ESP_LOGI(TAG, "Disconnected from %s", s_connection_name);
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s_connection_name = NULL;
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return ESP_OK;
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}
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static void 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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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 start(const char *ssid, const char *passwd)
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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_config_t netif_config = ESP_NETIF_DEFAULT_WIFI_STA();
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esp_netif_t *netif = esp_netif_new(&netif_config);
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assert(netif);
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esp_netif_attach_wifi_station(netif);
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esp_wifi_set_default_wifi_sta_handlers();
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s_example_esp_netif = netif;
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, &on_wifi_disconnect, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &on_got_ip, NULL));
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ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
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wifi_config_t wifi_config;
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memset(&wifi_config, 0, sizeof(wifi_config));
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if (ssid) {
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strncpy((char *)wifi_config.sta.ssid, ssid, strlen(ssid));
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}
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if (passwd) {
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strncpy((char *)wifi_config.sta.password, passwd, strlen(passwd));
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}
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ESP_LOGI(TAG, "Connecting to %s...", wifi_config.sta.ssid);
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
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ESP_ERROR_CHECK(esp_wifi_start());
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ESP_ERROR_CHECK(esp_wifi_connect());
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s_connection_name = ssid;
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}
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static void stop(void)
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{
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ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, &on_wifi_disconnect));
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &on_got_ip));
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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_esp_netif));
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esp_netif_destroy(s_example_esp_netif);
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s_example_esp_netif = NULL;
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}
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esp_netif_t *get_example_netif(void)
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{
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return s_example_esp_netif;
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}
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