137 lines
4.5 KiB
C++
137 lines
4.5 KiB
C++
/* Common WiFi Init as STA for ASIO examples
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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 "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_event_loop.h"
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#include "esp_log.h"
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#include "nvs_flash.h"
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#include "driver/uart.h"
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#include "esp_console.h"
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#include "esp_vfs_dev.h"
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#include "lwip/err.h"
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#include "lwip/sys.h"
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#include <cstring>
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/* The examples use simple WiFi configuration that you can set via
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'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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/* FreeRTOS event group to signal when we are connected*/
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static EventGroupHandle_t wifi_event_group;
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/* The event group allows multiple bits for each event,
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but we only care about one event - are we connected
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to the AP with an IP? */
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const int WIFI_CONNECTED_BIT = BIT0;
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static const char *TAG = "asio example wifi init";
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/**
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* Definition of ASIO main method, which is called after network initialized
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*/
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void asio_main();
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static esp_err_t event_handler(void *ctx, system_event_t *event)
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{
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switch(event->event_id) {
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case SYSTEM_EVENT_STA_START:
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esp_wifi_connect();
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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ESP_LOGI(TAG, "got ip:%s",
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ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
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xEventGroupSetBits(wifi_event_group, WIFI_CONNECTED_BIT);
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break;
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case SYSTEM_EVENT_AP_STACONNECTED:
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ESP_LOGI(TAG, "station:" MACSTR " join, AID=%d",
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MAC2STR(event->event_info.sta_connected.mac),
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event->event_info.sta_connected.aid);
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break;
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case SYSTEM_EVENT_AP_STADISCONNECTED:
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ESP_LOGI(TAG, "station:" MACSTR "leave, AID=%d",
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MAC2STR(event->event_info.sta_disconnected.mac),
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event->event_info.sta_disconnected.aid);
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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esp_wifi_connect();
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xEventGroupClearBits(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 ESP_OK;
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}
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void wifi_init_sta()
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{
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wifi_event_group = xEventGroupCreate();
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tcpip_adapter_init();
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ESP_ERROR_CHECK(esp_event_loop_init(event_handler, NULL) );
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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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wifi_config_t wifi_config;
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// zero out the config struct to ensure defaults are setup
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memset(&wifi_config, 0, sizeof(wifi_sta_config_t));
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// only copy ssid&password from example config
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strcpy((char*)(wifi_config.sta.ssid), EXAMPLE_ESP_WIFI_SSID);
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strcpy((char*)(wifi_config.sta.password), EXAMPLE_ESP_WIFI_PASS);
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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_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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extern "C" void app_main()
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{
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//Initialize NVS
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esp_err_t ret = nvs_flash_init();
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if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
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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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ESP_LOGI(TAG, "ESP_WIFI_MODE_AP");
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wifi_init_sta();
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// Initialize VFS & UART so we can use std::cout/cin
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setvbuf(stdin, NULL, _IONBF, 0);
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setvbuf(stdout, NULL, _IONBF, 0);
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/* Install UART driver for interrupt-driven reads and writes */
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ESP_ERROR_CHECK( uart_driver_install( (uart_port_t)CONFIG_CONSOLE_UART_NUM,
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256, 0, 0, NULL, 0) );
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/* Tell VFS to use UART driver */
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esp_vfs_dev_uart_use_driver(CONFIG_CONSOLE_UART_NUM);
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esp_vfs_dev_uart_port_set_rx_line_endings(CONFIG_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CR);
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/* Move the caret to the beginning of the next line on '\n' */
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esp_vfs_dev_uart_port_set_tx_line_endings(CONFIG_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CRLF);
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// wait till we receive IP, so asio realated code can be started
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xEventGroupWaitBits(wifi_event_group, WIFI_CONNECTED_BIT, 1, 1, portMAX_DELAY);
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// network is ready, let's proceed with ASIO example
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asio_main();
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}
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