Espressif Systems ESP - Page 162

Chapter 4. Software framework
4.10.93 Does ESP32 WPA2 Enterprise Authentication support Cisco CCKM mode?
• This mode is currently not supported, even though the enumeration in esp_wi󰝘_driver.h has
WPA2_AUTH_CCKM.
4.10.94 Using wpa2_enterprise (EAP-TLS method), what is the maximum length sup-
ported for client certicates?
• Up to 4 KB.
4.10.95 Does ESP8089 support Wi-Fi Direct mode?
• Yes, but ESP8089 can only use the default 󰝘xed 󰝘rmware and cannot be used for secondary development.
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?
• In ESP32 staion mode, there is a wi󰝘_sta_con󰝘g_t structure with 2 variables underneath, i.e., sort_method and
threshold. The RSSI threshold is con󰝘gured by assigning values to these two variables.
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?
Use API esp_wi󰝘_set_inactive_time to con󰝘gure the time.
4.10.98 Does ESP32 Wi-Fi work with PSRAM?
• For information on using Wi-Fi with PSRAM, please refer to Using PSRAM.
4.10.99 [Connect] How to troubleshoot the issue that ESP32 series of products cannot
connect to the router over Wi-Fi from the hardware and software aspects?
Please follow the steps below to troubleshoot the issue:
• Firstly, use the Wi-Fi error code to determine the possible cause for the failure.
• Then, try connecting another device, such as a phone, to the router to determine whether this is a
problem with the router or ESP32.
– If the phone cannot connect to the router either, please check if there is any problem with the
router.
– If it can, please check whether there is any issue with ESP32.
• Steps to troubleshoot router issues:
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