112 lines
3.8 KiB
C
112 lines
3.8 KiB
C
/*
|
|
* wifi.c
|
|
*
|
|
* Created on: 21 Apr 2020
|
|
* Author: Chris
|
|
*/
|
|
|
|
#include "wifi.h"
|
|
|
|
#define WIFI_CONNECTED_BIT BIT0
|
|
#define WIFI_FAIL_BIT BIT1
|
|
|
|
static EventGroupHandle_t s_wifi_event_group;
|
|
static const char *TAG = "wifi station";
|
|
static int s_retry_num = 0;
|
|
|
|
static void event_handler(void* arg, esp_event_base_t event_base,
|
|
int32_t event_id, void* event_data)
|
|
{
|
|
if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
|
|
esp_wifi_connect();
|
|
} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
|
|
if (s_retry_num < CONFIG_ESP_WIFI_RETRIES) {
|
|
esp_wifi_connect();
|
|
s_retry_num++;
|
|
ESP_LOGI(TAG, "retry to connect to the AP");
|
|
} else {
|
|
xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
|
|
}
|
|
ESP_LOGI(TAG,"connect to the AP fail");
|
|
} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
|
|
ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
|
|
ESP_LOGI(TAG, "got ip:%s",
|
|
ip4addr_ntoa(&event->ip_info.ip));
|
|
s_retry_num = 0;
|
|
xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
|
|
}
|
|
}
|
|
|
|
void wifi_init_sta()
|
|
{
|
|
//Initialize NVS
|
|
esp_err_t ret = nvs_flash_init();
|
|
if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
|
|
ESP_ERROR_CHECK(nvs_flash_erase());
|
|
ret = nvs_flash_init();
|
|
}
|
|
ESP_ERROR_CHECK(ret);
|
|
|
|
s_wifi_event_group = xEventGroupCreate();
|
|
|
|
tcpip_adapter_init();
|
|
|
|
ESP_ERROR_CHECK(esp_event_loop_create_default());
|
|
|
|
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
|
|
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
|
|
|
|
//tcpip_adapter_dhcpc_stop(TCPIP_ADAPTER_IF_STA);
|
|
//tcpip_adapter_ip_info_t info;
|
|
//ip4_addr_t gw;
|
|
//gw.addr = ipaddr_addr("192.168.0.1");
|
|
//info.gw = gw;
|
|
//ip4_addr_t ip;
|
|
//ip.addr = ipaddr_addr("192.168.0.110");
|
|
//info.ip = ip;
|
|
//ip4_addr_t netmask;
|
|
//netmask.addr = ipaddr_addr("255.255.255.0");
|
|
//info.netmask = netmask;
|
|
//tcpip_adapter_sta_start(0, &info);
|
|
|
|
ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
|
|
ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
|
|
|
|
wifi_config_t wifi_config = {
|
|
.sta = {
|
|
.ssid = CONFIG_ESP_WIFI_SSID,
|
|
.password = CONFIG_ESP_WIFI_PASSWORD
|
|
},
|
|
};
|
|
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.");
|
|
|
|
/* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or connection failed for the maximum
|
|
* number of re-tries (WIFI_FAIL_BIT). The bits are set by event_handler() (see above) */
|
|
EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
|
|
WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
|
|
pdFALSE,
|
|
pdFALSE,
|
|
portMAX_DELAY);
|
|
|
|
//tcpip_adapter_set_ip_info(TCPIP_ADAPTER_IF_STA, &info);
|
|
/* xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually
|
|
* happened. */
|
|
if (bits & WIFI_CONNECTED_BIT) {
|
|
ESP_LOGI(TAG, "connected to ap SSID:%s",
|
|
CONFIG_ESP_WIFI_SSID);
|
|
} else if (bits & WIFI_FAIL_BIT) {
|
|
ESP_LOGI(TAG, "Failed to connect to SSID:%s",
|
|
CONFIG_ESP_WIFI_SSID);
|
|
} else {
|
|
ESP_LOGE(TAG, "UNEXPECTED EVENT");
|
|
}
|
|
|
|
//ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler));
|
|
//ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler));
|
|
//vEventGroupDelete(s_wifi_event_group);
|
|
}
|