OK, here it goes.
I upgraded esp-idf to latest (hopefully) version: v4.4-dev-2977-gdd491ee851
I took esp-idf/examples/wifi/getting_started/station/main/station_example_main.c
Same situation - wifi will connect:
Code: Select all
I (524) wifi station: ESP_WIFI_MODE_STA
I (534) wifi:wifi driver task: 3ffc0344, prio:23, stack:6656, core=0
I (534) system_api: Base MAC address is not set
I (534) system_api: read default base MAC address from EFUSE
I (554) wifi:wifi firmware version: cca42a5
I (554) wifi:wifi certification version: v7.0
I (554) wifi:config NVS flash: enabled
I (554) wifi:config nano formating: disabled
I (554) wifi:Init data frame dynamic rx buffer num: 32
I (564) wifi:Init management frame dynamic rx buffer num: 32
I (564) wifi:Init management short buffer num: 32
I (574) wifi:Init dynamic tx buffer num: 32
I (574) wifi:Init static rx buffer size: 1600
I (574) wifi:Init static rx buffer num: 10
I (584) wifi:Init dynamic rx buffer num: 32
I (584) wifi_init: rx ba win: 6
I (594) wifi_init: tcpip mbox: 32
I (594) wifi_init: udp mbox: 6
I (594) wifi_init: tcp mbox: 6
I (604) wifi_init: tcp tx win: 5744
I (604) wifi_init: tcp rx win: 5744
I (614) wifi_init: tcp mss: 1440
I (614) wifi_init: WiFi IRAM OP enabled
I (614) wifi_init: WiFi RX IRAM OP enabled
I (624) phy_init: phy_version 4670,719f9f6,Feb 18 2021,17:07:07
I (734) wifi:mode : sta (24:6f:28:b2:3e:60)
I (734) wifi:enable tsf
I (734) wifi station: wifi_init_sta finished.
I (734) wifi station: Event dispatched from event loop base=WIFI_EVENT, event_id=2
I (754) wifi:new:<11,0>, old:<1,0>, ap:<255,255>, sta:<11,0>, prof:1
I (754) wifi:state: init -> auth (b0)
I (764) wifi:state: auth -> assoc (0)
I (764) wifi:state: assoc -> run (10)
I (774) wifi:connected with loulou, aid = 1, channel 11, BW20, bssid = 18:e8:29:a6:e6:39
I (774) wifi:security: WPA2-PSK, phy: bgn, rssi: -58
I (784) wifi:pm start, type: 1
I (784) wifi station: Event dispatched from event loop base=WIFI_EVENT, event_id=4
I (824) wifi:AP's beacon interval = 102400 us, DTIM period = 2
I (1524) esp_netif_handlers: sta ip: 192.168.1.139, mask: 255.255.255.0, gw: 192.168.1.1
I (1524) wifi station: Event dispatched from event loop base=IP_EVENT, event_id=0
I (1534) wifi station: got ip:192.168.1.139
I (1534) wifi station: connected to ap SSID:myssid password:mypassword
W (5954) wifi:<ba-add>idx:0 (ifx:0, 18:e8:29:a6:e6:39), tid:0, ssn:1, winSize:64
but event_handler is not called when the wifi access point is switched off and I only get this in the log:
Code: Select all
I (46104) wifi:state: run -> init (3c0)
I (46114) wifi:pm stop, total sleep time: 43144929 us / 45328908 us
W (46114) wifi:<ba-del>idx
I (46114) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:1
Here is the full code:
Code: Select all
/* WiFi station Example
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 <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "lwip/err.h"
#include "lwip/sys.h"
/* The examples use WiFi configuration that you can set via project configuration menu
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
#define EXAMPLE_ESP_MAXIMUM_RETRY CONFIG_ESP_MAXIMUM_RETRY
/* FreeRTOS event group to signal when we are connected*/
static EventGroupHandle_t s_wifi_event_group;
/* The event group allows multiple bits for each event, but we only care about two events:
* - we are connected to the AP with an IP
* - we failed to connect after the maximum amount of retries */
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT BIT1
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)
{
ESP_LOGI(TAG, "Event dispatched from event loop base=%s, event_id=%d", event_base, event_id);
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 < EXAMPLE_ESP_MAXIMUM_RETRY) {
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:" IPSTR, IP2STR(&event->ip_info.ip));
s_retry_num = 0;
xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
}
}
void wifi_init_sta(void)
{
s_wifi_event_group = xEventGroupCreate();
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
esp_netif_create_default_wifi_sta();
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
esp_event_handler_instance_t instance_any_id;
esp_event_handler_instance_t instance_got_ip;
ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
ESP_EVENT_ANY_ID,
&event_handler,
NULL,
&instance_any_id));
ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
IP_EVENT_STA_GOT_IP,
&event_handler,
NULL,
&instance_got_ip));
wifi_config_t wifi_config = {
.sta = {
.ssid = EXAMPLE_ESP_WIFI_SSID,
.password = EXAMPLE_ESP_WIFI_PASS,
/* Setting a password implies station will connect to all security modes including WEP/WPA.
* However these modes are deprecated and not advisable to be used. Incase your Access point
* doesn't support WPA2, these mode can be enabled by commenting below line */
.threshold.authmode = WIFI_AUTH_WPA2_PSK,
.pmf_cfg = {
.capable = true,
.required = false
},
},
};
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_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);
/* 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 password:%s",
EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
} else if (bits & WIFI_FAIL_BIT) {
ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s",
EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
} else {
ESP_LOGE(TAG, "UNEXPECTED EVENT");
}
/* The event will not be processed after unregister */
ESP_ERROR_CHECK(esp_event_handler_instance_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, instance_got_ip));
ESP_ERROR_CHECK(esp_event_handler_instance_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id));
vEventGroupDelete(s_wifi_event_group);
}
void app_main(void)
{
//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);
ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
wifi_init_sta();
}
How do I get the code to react on wifi disconnection and retry connecting back?
Thanks
Rasto
