mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
137 lines
4.5 KiB
C++
137 lines
4.5 KiB
C++
/* Common WiFi Init as STA for ASIO examples
|
|
|
|
This example code is in the Public Domain (or CC0 licensed, at your option.)
|
|
|
|
Unless required by applicable law or agreed to in writing, this
|
|
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
|
CONDITIONS OF ANY KIND, either express or implied.
|
|
*/
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "freertos/event_groups.h"
|
|
#include "esp_system.h"
|
|
#include "esp_wifi.h"
|
|
#include "esp_event_loop.h"
|
|
#include "esp_log.h"
|
|
#include "nvs_flash.h"
|
|
#include "driver/uart.h"
|
|
#include "esp_console.h"
|
|
#include "esp_vfs_dev.h"
|
|
|
|
#include "lwip/err.h"
|
|
#include "lwip/sys.h"
|
|
|
|
#include <cstring>
|
|
|
|
/* The examples use simple WiFi configuration that you can set via
|
|
'make menuconfig'.
|
|
|
|
If you'd rather not, just change the below entries to strings with
|
|
the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
|
|
*/
|
|
#define EXAMPLE_ESP_WIFI_SSID CONFIG_ESP_WIFI_SSID
|
|
#define EXAMPLE_ESP_WIFI_PASS CONFIG_ESP_WIFI_PASSWORD
|
|
|
|
/* FreeRTOS event group to signal when we are connected*/
|
|
static EventGroupHandle_t wifi_event_group;
|
|
|
|
/* The event group allows multiple bits for each event,
|
|
but we only care about one event - are we connected
|
|
to the AP with an IP? */
|
|
const int WIFI_CONNECTED_BIT = BIT0;
|
|
|
|
static const char *TAG = "asio example wifi init";
|
|
|
|
/**
|
|
* Definition of ASIO main method, which is called after network initialized
|
|
*/
|
|
void asio_main();
|
|
|
|
static esp_err_t event_handler(void *ctx, system_event_t *event)
|
|
{
|
|
switch(event->event_id) {
|
|
case SYSTEM_EVENT_STA_START:
|
|
esp_wifi_connect();
|
|
break;
|
|
case SYSTEM_EVENT_STA_GOT_IP:
|
|
ESP_LOGI(TAG, "got ip:%s",
|
|
ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
|
|
xEventGroupSetBits(wifi_event_group, WIFI_CONNECTED_BIT);
|
|
break;
|
|
case SYSTEM_EVENT_AP_STACONNECTED:
|
|
ESP_LOGI(TAG, "station:" MACSTR " join, AID=%d",
|
|
MAC2STR(event->event_info.sta_connected.mac),
|
|
event->event_info.sta_connected.aid);
|
|
break;
|
|
case SYSTEM_EVENT_AP_STADISCONNECTED:
|
|
ESP_LOGI(TAG, "station:" MACSTR "leave, AID=%d",
|
|
MAC2STR(event->event_info.sta_disconnected.mac),
|
|
event->event_info.sta_disconnected.aid);
|
|
break;
|
|
case SYSTEM_EVENT_STA_DISCONNECTED:
|
|
esp_wifi_connect();
|
|
xEventGroupClearBits(wifi_event_group, WIFI_CONNECTED_BIT);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ESP_OK;
|
|
}
|
|
|
|
void wifi_init_sta()
|
|
{
|
|
wifi_event_group = xEventGroupCreate();
|
|
|
|
tcpip_adapter_init();
|
|
ESP_ERROR_CHECK(esp_event_loop_init(event_handler, NULL) );
|
|
|
|
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
|
|
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
|
|
wifi_config_t wifi_config;
|
|
// zero out the config struct to ensure defaults are setup
|
|
memset(&wifi_config, 0, sizeof(wifi_sta_config_t));
|
|
// only copy ssid&password from example config
|
|
strcpy((char*)(wifi_config.sta.ssid), EXAMPLE_ESP_WIFI_SSID);
|
|
strcpy((char*)(wifi_config.sta.password), EXAMPLE_ESP_WIFI_PASS);
|
|
|
|
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
|
|
ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
|
|
ESP_ERROR_CHECK(esp_wifi_start() );
|
|
|
|
ESP_LOGI(TAG, "wifi_init_sta finished.");
|
|
ESP_LOGI(TAG, "connect to ap SSID:%s password:%s",
|
|
EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
|
|
}
|
|
|
|
extern "C" void app_main()
|
|
{
|
|
//Initialize NVS
|
|
esp_err_t ret = nvs_flash_init();
|
|
if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
|
|
ESP_ERROR_CHECK(nvs_flash_erase());
|
|
ret = nvs_flash_init();
|
|
}
|
|
ESP_ERROR_CHECK(ret);
|
|
|
|
ESP_LOGI(TAG, "ESP_WIFI_MODE_AP");
|
|
wifi_init_sta();
|
|
|
|
// Initialize VFS & UART so we can use std::cout/cin
|
|
setvbuf(stdin, NULL, _IONBF, 0);
|
|
setvbuf(stdout, NULL, _IONBF, 0);
|
|
/* Install UART driver for interrupt-driven reads and writes */
|
|
ESP_ERROR_CHECK( uart_driver_install( (uart_port_t)CONFIG_CONSOLE_UART_NUM,
|
|
256, 0, 0, NULL, 0) );
|
|
/* Tell VFS to use UART driver */
|
|
esp_vfs_dev_uart_use_driver(CONFIG_CONSOLE_UART_NUM);
|
|
esp_vfs_dev_uart_set_rx_line_endings(ESP_LINE_ENDINGS_CR);
|
|
/* Move the caret to the beginning of the next line on '\n' */
|
|
esp_vfs_dev_uart_set_tx_line_endings(ESP_LINE_ENDINGS_CRLF);
|
|
|
|
// wait till we receive IP, so asio realated code can be started
|
|
xEventGroupWaitBits(wifi_event_group, WIFI_CONNECTED_BIT, 1, 1, portMAX_DELAY);
|
|
|
|
// network is ready, let's proceed with ASIO example
|
|
asio_main();
|
|
}
|