1 | /* WiFi softAP Example
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2 |
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3 | This example code is in the Public Domain (or CC0 licensed, at your option.)
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4 |
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5 | Unless required by applicable law or agreed to in writing, this
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6 | software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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7 | CONDITIONS OF ANY KIND, either express or implied.
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8 | */
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9 | #include <string.h>
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10 | #include "freertos/FreeRTOS.h"
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11 | #include "freertos/task.h"
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12 | #include "esp_system.h"
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13 | #include "esp_wifi.h"
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14 | #include "esp_event.h"
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15 | #include "esp_log.h"
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16 | #include "nvs_flash.h"
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17 |
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18 | #include "lwip/err.h"
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19 | #include "lwip/sys.h"
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20 |
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21 | /* The examples use WiFi configuration that you can set via project configuration menu.
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22 |
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23 | If you'd rather not, just change the below entries to strings with
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24 | the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
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25 | */
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26 | #define EXAMPLE_ESP_WIFI_SSID CONFIG_ESP_WIFI_SSID
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27 | #define EXAMPLE_ESP_WIFI_PASS CONFIG_ESP_WIFI_PASSWORD
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28 | #define EXAMPLE_MAX_STA_CONN CONFIG_ESP_MAX_STA_CONN
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29 |
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30 | static const char *TAG = "wifi softAP";
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31 |
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32 | static void wifi_event_handler(void* arg, esp_event_base_t event_base,
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33 | int32_t event_id, void* event_data)
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34 | {
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35 | if (event_id == WIFI_EVENT_AP_STACONNECTED) {
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36 | wifi_event_ap_staconnected_t* event = (wifi_event_ap_staconnected_t*) event_data;
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37 | ESP_LOGI(TAG, "station "MACSTR" join, AID=%d",
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38 | MAC2STR(event->mac), event->aid);
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39 | } else if (event_id == WIFI_EVENT_AP_STADISCONNECTED) {
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40 | wifi_event_ap_stadisconnected_t* event = (wifi_event_ap_stadisconnected_t*) event_data;
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41 | ESP_LOGI(TAG, "station "MACSTR" leave, AID=%d",
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42 | MAC2STR(event->mac), event->aid);
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43 | }
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44 | }
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45 |
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46 | void wifi_init_softap(void)
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47 | {
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48 | tcpip_adapter_init();
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49 | ESP_ERROR_CHECK(esp_event_loop_create_default());
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50 |
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51 | wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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52 | ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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53 |
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54 | ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &wifi_event_handler, NULL));
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55 |
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56 | uint8_t mac_adress[6] = { 0 };
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57 | char example_ssid[32] = { 0 };
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58 | //
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59 | esp_efuse_mac_get_default(mac_adress);
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60 | sprintf(example_ssid, EXAMPLE_ESP_WIFI_SSID"-%02X-%02X-%02X", mac_adress[3], mac_adress[4], mac_adress[5]);
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61 |
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62 | wifi_config_t wifi_config = {
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63 | .ap = {
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64 | .ssid = example_ssid,
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65 | .ssid_len = strlen(example_ssid),
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66 | .password = EXAMPLE_ESP_WIFI_PASS,
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67 | .max_connection = EXAMPLE_MAX_STA_CONN,
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68 | .authmode = WIFI_AUTH_WPA_WPA2_PSK
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69 | },
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70 | };
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71 |
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72 | if (strlen(EXAMPLE_ESP_WIFI_PASS) == 0) {
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73 | wifi_config.ap.authmode = WIFI_AUTH_OPEN;
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74 | }
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75 |
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76 | ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_AP));
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77 | ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_AP, &wifi_config));
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78 | ESP_ERROR_CHECK(esp_wifi_start());
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79 |
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80 | ESP_LOGI(TAG, "wifi_init_softap finished. SSID:%s password:%s",
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81 | EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
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82 | }
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83 |
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84 | void app_main(void)
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85 | {
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86 | //Initialize NVS
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87 | esp_err_t ret = nvs_flash_init();
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88 | if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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89 | ESP_ERROR_CHECK(nvs_flash_erase());
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90 | ret = nvs_flash_init();
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91 | }
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92 | ESP_ERROR_CHECK(ret);
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93 |
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94 | ESP_LOGI(TAG, "ESP_WIFI_MODE_AP");
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95 | wifi_init_softap();
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96 | }
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