Espressif Systems ESP - Page 13

4.10.60 I’m scanning Wi-Fi on an ESP32 device using release/v3.3 version of ESP-IDF. When
there are some identical SSIDs, same SSID names will show in the Wi-Fi list repeatedly.
Is there an API to 󰝘lter such repeated names? . . . . . . . . . . . . . . . . . . . . . . . . 138
4.10.61 Does ESP8266 support EDCF (AC) scheme? . . . . . . . . . . . . . . . . . . . . . . . . 138
4.10.62 I’m using the master version of ESP8266-RTOS-SDK to open the WiFi Qos application
to get EDCF support. How does ESP8266 decide which data packet should be allocated to
the EDCF AC category? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
4.10.63 Using ESP32, how to con󰝘gure the maximum Wi-Fi transmission speed and stability with-
out considering memory and power consumption? . . . . . . . . . . . . . . . . . . . . . 138
4.10.64 In Wi-Fi SoftAP mode, how many Station devices can ESP8266 be connected at most? . . 138
4.10.65 How to get CSI data when using ESP32 device in Station mode? . . . . . . . . . . . . . . 138
4.10.66 In AP + STA mode, after an ESP32 is connected to Wi-Fi, will the Wi-Fi connection be
a󰝗ected if I enable or disable its AP mode? . . . . . . . . . . . . . . . . . . . . . . . . . 138
4.10.67 I’m using ESP-IDF release/v3.3 for ESP32 development, but only bluetooth function is
needed, how to disable Wi-Fi function through software? . . . . . . . . . . . . . . . . . . 139
4.10.68 In ESP-IDF, the esp_wifi_80211_tx() interface can only be used to send data pack-
ets, is there a corresponding function to receive packets? . . . . . . . . . . . . . . . . . . 139
4.10.69 What are the reasons for the high failure rate of esptouch networking? . . . . . . . . . . . 139
4.10.70 How to optimize the IRAM when ESP32 uses Wi-Fi? . . . . . . . . . . . . . . . . . . . 139
4.10.71 How to test ESP32’s Wi-Fi transmission distance? . . . . . . . . . . . . . . . . . . . . 140
4.10.72 What is the maximum length of Wi-Fi MTU for an ESP32 and how to change it? . . . . . 140
4.10.73 During the on-hook test for an ESP32 device, the following log shows. What does it mean? 140
4.10.74 How to disable AP mode when ESP32 is in AP + STA mode? . . . . . . . . . . . . . . . 140
4.10.75 After ESP32 used the Wi-Fi function, are all ADC2 channels unavailable? . . . . . . . . 140
4.10.76 How do I set the country code for a Wi-Fi module ? . . . . . . . . . . . . . . . . . . . . 141
4.10.77 When using ESP32 as a SoftAP and have it connected to an Iphone, a warning prompts
as “low security WPA/WPA2(TKIP) is not secure. If this is your wireless LAN, please
con󰝘gure the router to use WPA2(AES) or WPA3 security type”, how to solve it? . . . . 141
4.10.78 Since ESP32’s Wi-Fi module only supports 2.4 GHz of bandwidth, can Wi-Fi networking
succeed when using a multi-frequency router with both 2.4 GHz and 5 GHz of bandwidth？141
4.10.79 How to obtain the RSSI of the station connected when ESP32 is used in AP mode? . . . . 141
4.10.80 Does ESP32 support FTM(Fine Timing Measurement)? . . . . . . . . . . . . . . . . . . 142
4.10.81 When ESP32 is in STA+AP mode, how to specify whether using STA or AP interface to
send data? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
4.10.82 ESP8266 wpa2_enterprise How to enable Wi-Fi debugging function? . . . . . . . . . . . 142
4.10.83 Is there a standard for the number of Wi-Fi signal frames? . . . . . . . . . . . . . . . . . 143
4.10.84 What is the current progress of WFA bugs 󰝘xing? . . . . . . . . . . . . . . . . . . . . . 143
4.10.85 When Wi-Fi connection failed, what does the error code mean? . . . . . . . . . . . . . . 143
4.10.86 When using ESP32’s Release/v3.3 of SDK to download the Station example, the device
cannot be connected to an unencrypted Wi-Fi. What is the reason? . . . . . . . . . . . . 143
4.10.87 What is the maximum PHY rate of Wi-Fi communication of ESP32-S2 chip? . . . . . . . 143
4.10.88 Does ESP modules support EAP-FAST? . . . . . . . . . . . . . . . . . . . . . . . . . . 144
4.10.89 Does ESP modules support the WiFi NAN (Neighbor Awareness Networking) protocol? . 144
4.10.90 When using ESP32 with release/v3.3 version of ESP-IDF. When con󰝘guring the router, is
there an API to directly tell that the entered password is wrong? . . . . . . . . . . . . . . 144
4.10.91 When testing the Station example of ESP32 base on v4.4 version of ESP-IDF, how to
support WPA3 encryption mode? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
4.10.92 How does ESP32 speed up the Wi-Fi connection? . . . . . . . . . . . . . . . . . . . . . 144
4.10.93 Does ESP32 WPA2 Enterprise Authentication support Cisco CCKM mode? . . . . . . . 145
4.10.94 Using wpa2_enterprise (EAP-TLS method), what is the maximum length supported for
client certi󰝘cates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
4.10.95 Does ESP8089 support Wi-Fi Direct mode? . . . . . . . . . . . . . . . . . . . . . . . . 145
4.10.96 How does ESP32 connect to an AP whose RSSI does not fall below the con󰝘gured threshold
when there are multiple APs in the environment? . . . . . . . . . . . . . . . . . . . . . . 145
4.10.97 ESP32 Wi-Fi has a beacon lost and sends 5 probe requests to the AP after 6 seconds. If
the AP does not respond, disconnection will be caused. Can this 6 seconds be con󰝘gured? 145
4.10.98 Does ESP32 Wi-Fi work with PSRAM? . . . . . . . . . . . . . . . . . . . . . . . . . . 145
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