ESP32_cannot_connect_to_WIFI

[XingpingGY]

I change the wifi ssid and password correctly. But ESP32 cannot connect to the WiFi. [network] starting WiFi 12:00:00.019 -> [ 947] [network] [STA] connecting STAtion to router using DHCP 12:00:00.115 -> [ 1061] [network] [STA] WiFi client started 12:00:00.115 -> [ 1070] [httpServer] started 12:00:00.115 -> [ 1071] [ftpServer] started 12:00:02.172 -> [ 3112] [network] [STA] disconnected from WiFi 12:00:14.952 -> [ 15913] Could not find NTP server by its name. 12:00:14.952 -> [ 15914] Could not find NTP server by its name. 12:00:15.000 -> [ 15915] Could not find NTP server by its name. Hope to know what the problem is. Thank you very much.

[XingpingGY]

Now I can connect to the WiFi. But the FTP service did not work. It is said that [ftpControlConnection] recv error: 128 And my windows operating system cannot open the file folder through ftp://+IP this way.

[BojanJurca]

I'm not sure, it seems that you still experience connection issues. IP address 12:00:00.019 for example is not a valid IP address at all.

Socket error 128 means:

ENOTSOCK (128)Invalid socket descriptor. An invalid socket descriptor was passed to an API function. 

See: http://www.on-time.com/rtos-32-docs/rtip-32/reference-manual/error-codes.htm

This doesn't really tell me anything right now. I would suggest that you uncomment the following line in setup () function only once:

// FFat.format (); // clear up flash disk to reset everything

then run the scratch again to start from scratch. After this comment it again. Please, send me a console log afterwards.

[XingpingGY]

Thanks for your patient answer. I did not find the solution to recv:128 and try to open the ftp service via two ways (through cmd command or resource manager of Windows) but failed in both of them. Finally I change a Esp32 and successfully run the program according to the markdown file. Thank you very much!