Chapter 4. Software framework
4.10.88 Does ESP modules support EAP-FAST?
:CHIP: ESP32 | ESP32-S2 | ESP32-C3 :
• Yes, please refer to wi_eap_fast demo.
4.10.89 Does ESP modules support the WiFi NAN (Neighbor Awareness Networking)
protocol?
CHIP: ESP8266 | ESP32 | ESP32-C3 | ESP32-S2 | ESP32-S3
• No.
4.10.90 When using ESP32 with release/v3.3 version of ESP-IDF. When conguring the
router, is there an API to directly tell that the entered password is wrong?
• There is no such API. According to the Wi-Fi protocol standard, when the password is wrong, the router will
not clearly tell the Station that the 4-way handshake is due to the password error. Under normal circumstances,
the password is obtained in 4 packets (1/4 frame, 2/4 frame, 3/4 frame, 4/4 frame). When the password is
correct, the AP will send 3/4 frames, but when the password is wrong, the AP will not send 3/4 frame but send
1/4 frame instead. However, when the AP sends 3/4 frame which is lost in the air for some reason, the AP
will also re-send 1/4 frame. Therefore, for Station, it is impossible to accurately distinguish between these two
situations. In the end, it will report a 204 error or a 14 error.
• Please refer to Wi-Fi reason code.
4.10.91 When testing the Station example of ESP32 base on v4.4 version of ESP-IDF,
how to support WPA3 encryption mode?
• Open menuconfig → Component config → Wi-Fi → Enable WPA3-Personal conguration;
• Set capable = true in pmf_cfg in the application code;
• Please refer to Wi-Fi Security for more descriptions.
4.10.92 How does ESP32 speed up the Wi-Fi connection?
You can try the following approaches:
• Set the CPU frequency to the maximum to speed up the key calculation speed. In addition, you
can also set the ash parameters to QIO, 80MHz, which will increase power consumption.
• Disable CONFIG_LWIP_DHCP_DOES_ARP_CHECK to greatly reduce the time of getting IP.
But there will be no checking on whether there is an IP address conict in the LAN.
• Open CONFIG_LWIP_DHCP_RESTORE_LAST_IP, and save the IP address obtained last time.
When DHCP starts, send DHCP requests directly without performing DHCP discover.
• Use xed scanning channel.
Espressif Systems 144
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