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ESP-IDF example: fall back to WPA2 when WPA3 compatibility mode fails #109

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Merged
XNinety9 merged 1 commit into from
Oct 1, 2026
Merged

ESP-IDF example: fall back to WPA2 when WPA3 compatibility mode fails #109

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14 changes: 13 additions & 1 deletion firmware/examples/esp32-idf/src/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -76,10 +76,22 @@ static void on_wifi_event(void *arg, esp_event_base_t base, int32_t id, void *da
esp_wifi_connect();
}
} else if (base == WIFI_EVENT && id == WIFI_EVENT_STA_DISCONNECTED) {
wifi_event_sta_disconnected_t *event = data;
if (event->reason == WIFI_REASON_IE_IN_4WAY_DIFFERS) {
/* Some boxes in WPA3 "compatibility mode" (WPA2 announced, WPA3 offered in a
* separate element) fail the handshake with WPA3: use WPA2 with that network. The
* driver saves it with the network. */
wifi_config_t cfg;
if (esp_wifi_get_config(WIFI_IF_STA, &cfg) == ESP_OK && !cfg.sta.disable_wpa3_compatible_mode) {
ESP_LOGW(TAG, "this network refuses WPA3 compatibility mode: using WPA2 with it");
cfg.sta.disable_wpa3_compatible_mode = 1;
esp_wifi_set_config(WIFI_IF_STA, &cfg);
}
}
xEventGroupClearBits(s_wifi_events, WIFI_CONNECTED);
xEventGroupSetBits(s_wifi_events, WIFI_DISCONNECTED);
if (!s_joining && wifi_configured()) {
ESP_LOGW(TAG, "Wi-Fi lost, reconnecting");
ESP_LOGW(TAG, "Wi-Fi lost (reason %d), reconnecting", event->reason);
esp_wifi_connect();
}
} else if (base == IP_EVENT && id == IP_EVENT_STA_GOT_IP) {
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