ESP8266 Community Forum

Posted: **Mon Feb 23, 2015 11:08 pm**

I'm playing around with the IoT Demo from Electrodragon (http://www.electrodragon.com/w/ESP8266_IoT, sample code R1) and I've noticed that the ESP8266 takes a while to connect to the wifi network. I added some print outs for the IP address and the return code for espconn_connect() and here's what I'm seeing:

Code: Select all

WiFi connecting...
IP address: 0.0.0.0
Connect status:1
WiFi connecting...
IP address: 0.0.0.0
Connect status:2
WiFi connecting error, wrong password
IP address: 0.0.0.0
Connect status:2
WiFi connecting error, wrong password
IP address: 0.0.0.0
Connect status:2
WiFi connecting error, wrong password
IP address: 0.0.0.0

So, it always starts off in the "Connecting" state, then goes into the "Wrong password" state and after 5 minutes, it finally connects. However, this is rather inefficient for the development process, so I was wondering if anyone has found a workaround for this problem.

Posted: **Wed Feb 25, 2015 8:01 pm**

For everyone's convenience, here's the bit of code that is on the Electrodragon sample:

This bit of code sets the wifi SSID and password via wifi_station_set_config(), which calls wifi_station_connect() if it is called in user_init():

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// If the card mode STA, then set the configuration, the name of AP, password, see User_config.h
// Optional read the MAC address of our card mode AP, see. Wifi_get_macaddr (SOFTAP_IF, macaddr)
// In the STA in charge will be a different MAC address as the client, but we have to address yourself to read that she had if she had acted as an access point
    if(wifi_get_opmode() == STATION_MODE)
    {
        wifi_station_get_config(&stationConfig);
        os_memset(stationConfig.ssid, 0, sizeof(stationConfig.ssid));
        os_memset(stationConfig.password, 0, sizeof(stationConfig.password));
        os_sprintf(stationConfig.ssid, "%s", WIFI_CLIENTSSID);
        os_sprintf(stationConfig.password, "%s", WIFI_CLIENTPASSWORD);
        wifi_station_set_config(&stationConfig);
        // wifi_get_macaddr(SOFTAP_IF, macaddr);
    }
    // For adjusting the output data in uart mode setup STA
    #ifdef PLATFORM_DEBUG
    if(wifi_get_opmode() == STATION_MODE)
    {
        wifi_station_get_config(&stationConfig);
        os_sprintf(info,"OPMODE: %u, SSID: %s, PASSWORD: %s\r\n",
            wifi_get_opmode(),
            stationConfig.ssid,
            stationConfig.password);
        uart0_sendStr(info);
    }
    #endif

And this bit calls wifi_station_get_connect_status() every second to check if the ESP8266 is successfully connected to the wifi network. The wifi_station_get_connect_status() is somehow returning an incorrect password error for an indeterminate number of minutes betore returning a STATION_GOT_IP code.

Code: Select all

     // Start the timer test the connection to Wi-Fi, check the connection every 1 sec., If the connection is established, then run TCP-client and send a test string.
    os_timer_disarm(&WiFiLinker);
    os_timer_setfn(&WiFiLinker, (os_timer_func_t *)wifi_check_ip, NULL);
    os_timer_arm(&WiFiLinker, 1000, 0);

Is there no one else using this bit of code? Or is everyone else having no problems with this code? (A yes/no answer to this question will be helpful too...)

Posted: **Wed Feb 25, 2015 9:13 pm**

Hi，

It seems that your password is wrong...

Are you sure you got the right password of router ？

Posted: **Wed Feb 25, 2015 10:42 pm**

So, I don't believe that my wifi password is incorrect for 2 reasons:

1. I have triple checked the password and I use the exact same password to connect to the wifi network.
2. The wifi connection eventually succeeds after a few minutes of retries with the same password.

What SDK is everyone else using? 0.9.5?

ESP8266 Community Forum

IoT Demo requires many retries to connect to wifi network

IoT Demo requires many retries to connect to wifi network

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Re: IoT Demo requires many retries to connect to wifi networ

Re: IoT Demo requires many retries to connect to wifi networ