ESP8266 Developer Zone

Hi. So far I have used the NONOS SDK version 1.5.4. I am currently switching to NONOS SDK 3.0.4. Initially, everything was going well, but now I am facing some problems. I have a case where the previous version had no problem with the Cisco AIR-AP1852l-E-K9 AP. Using SDK 3.0.4 refuses to connect.

In the logs, I can see the following difference:
NONOS 1.5.4:

scandone
state: 0 -> 2 (b0)
state: 2 -> 3 (0)
state: 3 -> 5 (10)

NONOS 3.0.4

scandone
state: 0 -> 2 (b0)
state: 2 -> 3 (0)
state: 3 -> 0 (12)
reconnect

In the case of 3.0.4, wifi_station_get_connect_status () still returns STATION_CONNECTING.

Does any of you know what "state: 3 -> 0 (12)" means?

You can try to call esp_wifi_set_protocal(0, 7) in the Wi-Fi start event.
But if you are work on a new project, maybe the best way is to use RTOS SDK..