SoftAP - incorrect SSID on start

[narayan]

I have the ESP8266 start in Station mode. Sometimes I need to stop the station mode and start SoftAP.
I set the SoftAP SSID to Zentri_xxx. However one in 3 to 1 in 5 times, the softap is started with ssid of ESP_xxxxxxx
Not only is this the case, but also I specify IP address of 10.10.10.1 and with DHCP service 10.10.10.x
However this changes to 192.168.4.x. This is not OK for our product, as the connecting server and web-pages
that are being served with the device expect to use 10.10.10.1.

We use:
wifi_softap_set_config_current ()
wifi_softap_dhcps_stop ()
wifi_set_opmode (SOFTAP_MODE)
/* I have better luck if I do this twice */
wifi_softap_set_config_current ()
wifi_softap_dhcps_stop ()
wifi_softap_set_dhcps_lease ()
wifi_softap_dhcps_start ()

This is a critical bug, please help.

[pratik]

Hello,

Which SDK are you using?
Also, do you initialize these settings in user_main?

[narayan]

SDK: 1.5.4
The user_init routine does:

wifi_set_opmode (STATION_MODE)
wifi_station_set_autoconnect (0)
wifi_set_macaddr (STATION_IF, xxx)
wifi_set_macaddr (SOFTAP_IF,xxxx)
wifi_set_opmode (STATION_MODE)

The rest of the in the function called by system_init_done_cb ()

[fvpalha]

Hi.

I have the same problem with SDK 1.5.4.
How I can fix it?

[pratik]

It seems to work when you call the setting function through an OS task. I have something on that on my site here:
http://iot-bits.com/articles/esp8266-so ... t-working/

This, or a complete system restart tends to work 100% of the time when changing config. Let me know if this helped!

[fvpalha]

Hi Pratik,

I tried this code, without success.

Code: Select all

void set_ap_config (os_event_t *e)
{
   struct softap_config ap;

   wifi_softap_get_config(&ap);

   os_memset(ap.ssid, 0, 32);
   os_memcpy(ap.ssid, "TST_ESP_", 8);
   
   ap.ssid_len = 8;
   ap.max_connection = 1;
   wifi_softap_set_config (&ap);
}


void ICACHE_FLASH_ATTR config_set_ap (void)
{
   unsigned char res;
   os_event_t testQueue[1];

   res = wifi_set_opmode_current (0x02);

   system_os_task (set_ap_config, USER_TASK_PRIO_1, testQueue, 1);

}


After the command, the AP disappear and appear again with same SSID initial.

I need to change the SSID, how I can do it?

[pratik]

Please ensure you are using valid characters in the SSID name and also a password of 8 valid characters or more. You could start with something like SSID = "Espressif", password = "password", just to rule out these problems.
If even that does not work, please let me know what happens if you call system restart API after setting default AP properties. Does it reboot with proper AP name or still reboots with same default SSID?

[fvpalha]

Hi Pratik,

I tried this code, without success.

Code: Select all

void set_ap_config (os_event_t *e)
{
   struct softap_config ap;

   wifi_softap_get_config(&ap);

   os_memset(ap.ssid, 0, 32);
   os_memcpy(ap.ssid, "Espressif", 9);

   os_memset(ap.password, 0, 64);
   os_memcpy(ap.password, "password", 8);
   ap.authmode = AUTH_WPA2_PSK;
   
   ap.ssid_len = 8;
   ap.max_connection = 1;
   wifi_softap_set_config (&ap);
   system_restart();
}


void ICACHE_FLASH_ATTR config_set_ap (void)
{
   unsigned char res;
   os_event_t testQueue[1];

   res = wifi_set_opmode_current (0x02);

   system_os_task (set_ap_config, USER_TASK_PRIO_1, testQueue, 1);

}


After the command, the AP disappear and appear again with default SSID and without password.

[fvpalha]

Hi Pratik,

I tried this code:

Code: Select all

void ICACHE_FLASH_ATTR config_set_ap (void)
{
   struct softap_config apconfig;
   char *arg1 = "Espressif";
   char *arg2 = "password";

   wifi_set_opmode(STATIONAP_MODE);

   memset(apconfig.ssid, 0, sizeof(apconfig.ssid));
   memset(apconfig.password, 0, sizeof(apconfig.password));
   os_bzero(&apconfig, sizeof(struct softap_config));
   wifi_softap_get_config(&apconfig);
   os_strncpy(apconfig.ssid, arg1, sizeof(apconfig.ssid));
   os_strncpy(apconfig.password, arg2, sizeof(apconfig.password));
   apconfig.ssid_len = strlen(arg1);

   apconfig.authmode = AUTH_WPA2_PSK;
   apconfig.ssid_len = 9;
   apconfig.max_connection = 1;

   ETS_UART_INTR_DISABLE();
   wifi_softap_set_config(&apconfig);
   ETS_UART_INTR_ENABLE();
   system_restart();
}


Without an OS task.

After the command, the ESP does not appear again. So I reset the power. The SSID changed.

The flash memory addresses 0x3FE0B4 and 0x3FE0D4 have the new SSID and password.

I hope this information can help us.

[pratik]

So disabling interrupts is making a difference?
Maybe this has something to do with open structures inside the SDK code. I will forward this issue to the firmware developers and get back with what they have to say!