247 lines
8.1 KiB
C
247 lines
8.1 KiB
C
/* ESPRESSIF MIT License
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*
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* Copyright (c) 2018 <ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD>
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*
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* Permission is hereby granted for use on all ESPRESSIF SYSTEMS products, in which case,
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* it is free of charge, to any person obtaining a copy of this software and associated
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* documentation files (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <string.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 "esp_system.h"
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#include "esp_wifi.h"
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#include "esp_mac.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "nvs_flash.h"
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#include "sdkconfig.h"
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#include "lwip/err.h"
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#include "lwip/sys.h"
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#include "lwip/ip4_addr.h"
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#include "mdns.h"
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/* The examples use WiFi configuration that you can set via 'make menuconfig'.
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If you'd rather not, just change the below entries to strings with
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the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
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*/
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#define EXAMPLE_ESP_WIFI_SSID CONFIG_ESP_WIFI_SSID
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#define EXAMPLE_ESP_WIFI_PASS CONFIG_ESP_WIFI_PASSWORD
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#define EXAMPLE_ESP_MAXIMUM_RETRY CONFIG_ESP_MAXIMUM_RETRY
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#define EXAMPLE_ESP_WIFI_AP_SSID CONFIG_ESP_WIFI_AP_SSID
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#define EXAMPLE_ESP_WIFI_AP_PASS CONFIG_ESP_WIFI_AP_PASSWORD
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#define EXAMPLE_MAX_STA_CONN CONFIG_MAX_STA_CONN
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#define EXAMPLE_IP_ADDR CONFIG_SERVER_IP
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#define EXAMPLE_ESP_WIFI_AP_CHANNEL CONFIG_ESP_WIFI_AP_CHANNEL
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static const char *TAG = "camera wifi";
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static int s_retry_num = 0;
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/* FreeRTOS event group to signal when we are connected*/
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static EventGroupHandle_t s_wifi_event_group = NULL;
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/* The event group allows multiple bits for each event, but we only care about two events:
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* - we are connected to the AP with an IP
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* - we failed to connect after the maximum amount of retries */
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#define WIFI_CONNECTED_BIT BIT0
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#define WIFI_FAIL_BIT BIT1
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static void wifi_event_handler(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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switch(event_id) {
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case WIFI_EVENT_AP_STACONNECTED:
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wifi_event_ap_staconnected_t *event = (wifi_event_ap_staconnected_t *)event_data;
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ESP_LOGI(TAG, "station:" MACSTR " join, AID=%d", MAC2STR(event->mac), event->aid);
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break;
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case WIFI_EVENT_AP_STADISCONNECTED:
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wifi_event_ap_stadisconnected_t *ds_event = (wifi_event_ap_stadisconnected_t *)event_data;
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ESP_LOGI(TAG, "station:" MACSTR "leave, AID=%d", MAC2STR(ds_event->mac), ds_event->aid);
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break;
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case WIFI_EVENT_STA_START:
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ESP_LOGI(TAG, "WIFI_EVENT_STA_START");
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esp_wifi_connect();
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break;
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case WIFI_EVENT_STA_DISCONNECTED:
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if (s_retry_num < EXAMPLE_ESP_MAXIMUM_RETRY)
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{
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esp_wifi_connect();
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s_retry_num++;
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ESP_LOGI(TAG, "retry to connect to the AP");
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}
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else {
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xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
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}
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ESP_LOGI(TAG, "connect to the AP fail");
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break;
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default:
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break;
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}
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// mdns_handle_system_event(ctx, event);
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return;
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}
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static void ip_event_handler(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_ip_t *event;
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switch(event_id) {
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case IP_EVENT_STA_GOT_IP:
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event = (ip_event_got_ip_t*)event_data;
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ESP_LOGI(TAG, "got ip:" IPSTR "\n", IP2STR(&event->ip_info.ip));
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s_retry_num = 0;
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xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
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break;
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default:
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break;
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}
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return;
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}
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void wifi_init_softap(esp_netif_t * netif)
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{
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if (strcmp(EXAMPLE_IP_ADDR, "192.168.4.1"))
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{
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int a, b, c, d;
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sscanf(EXAMPLE_IP_ADDR, "%d.%d.%d.%d", &a, &b, &c, &d);
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esp_netif_ip_info_t ip_info;
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IP4_ADDR(&ip_info.ip, a, b, c, d);
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IP4_ADDR(&ip_info.gw, a, b, c, d);
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IP4_ADDR(&ip_info.netmask, 255, 255, 255, 0);
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ESP_ERROR_CHECK(esp_netif_dhcps_stop(netif));
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ESP_ERROR_CHECK(esp_netif_set_ip_info(netif, &ip_info));
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ESP_ERROR_CHECK(esp_netif_dhcps_start(netif));
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}
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wifi_config_t wifi_config = {
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.ap.ssid = EXAMPLE_ESP_WIFI_AP_SSID,
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.ap.password = EXAMPLE_ESP_WIFI_AP_PASS,
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.ap.ssid_len = strlen((char *)wifi_config.ap.ssid),
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.ap.channel = 1,
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.ap.authmode = WIFI_AUTH_WPA2_PSK,
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// .ap.max_connection = EXAMPLE_MAX_STA_CONN,
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.ap.max_connection = 4,
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.ap.beacon_interval = 100,
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};
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if (strlen(EXAMPLE_ESP_WIFI_AP_PASS) == 0)
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{
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wifi_config.ap.authmode = WIFI_AUTH_OPEN;
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}
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if (strlen(EXAMPLE_ESP_WIFI_AP_CHANNEL))
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{
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int channel;
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sscanf(EXAMPLE_ESP_WIFI_AP_CHANNEL, "%d", &channel);
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wifi_config.ap.channel = channel;
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}
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ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_AP, &wifi_config));
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ESP_LOGI(TAG, "wifi_init_softap finished.SSID:%s password:%s",
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EXAMPLE_ESP_WIFI_AP_SSID, EXAMPLE_ESP_WIFI_AP_PASS);
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}
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void wifi_init_sta()
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{
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = EXAMPLE_ESP_WIFI_SSID,
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.password = EXAMPLE_ESP_WIFI_PASS
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},
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};
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ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
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ESP_LOGI(TAG, "wifi_init_sta finished.");
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ESP_LOGI(TAG, "connect to ap SSID:%s password:%s",
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EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
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}
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void app_wifi_main()
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{
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esp_err_t ret = nvs_flash_init();
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if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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ESP_ERROR_CHECK(nvs_flash_erase());
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ret = nvs_flash_init();
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}
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ESP_ERROR_CHECK(ret);
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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wifi_mode_t mode = WIFI_MODE_NULL;
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if (strlen(EXAMPLE_ESP_WIFI_AP_SSID) && strlen(EXAMPLE_ESP_WIFI_SSID))
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{
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mode = WIFI_MODE_APSTA;
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}
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else if (strlen(EXAMPLE_ESP_WIFI_AP_SSID))
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{
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mode = WIFI_MODE_AP;
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}
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else if (strlen(EXAMPLE_ESP_WIFI_SSID))
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{
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mode = WIFI_MODE_STA;
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}
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if (mode == WIFI_MODE_NULL)
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{
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ESP_LOGW(TAG, "Neither AP or STA have been configured. WiFi will be off.");
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return;
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}
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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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s_wifi_event_group = xEventGroupCreate();
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &wifi_event_handler, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &ip_event_handler, NULL));
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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ESP_ERROR_CHECK(esp_wifi_set_mode(mode));
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if (mode & WIFI_MODE_AP)
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{
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esp_netif_t * ap_netif = esp_netif_create_default_wifi_ap();
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wifi_init_softap(ap_netif);
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}
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if (mode & WIFI_MODE_STA)
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{
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esp_netif_create_default_wifi_sta();
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wifi_init_sta();
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}
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ESP_ERROR_CHECK(esp_wifi_start());
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ESP_ERROR_CHECK(esp_wifi_set_ps(WIFI_PS_NONE));
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ESP_LOGI(TAG, "wifi init finished.");
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if (mode & WIFI_MODE_STA) {
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xEventGroupWaitBits(s_wifi_event_group,
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WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
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pdFALSE,
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pdFALSE,
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portMAX_DELAY);
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}
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vEventGroupDelete(s_wifi_event_group);
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s_wifi_event_group = NULL;
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} |