ESP8266 Community Forum

- Fri Jan 02, 2015 6:31 pm #6152 This works fine for me

Code: Select all   /* need to set opmode before you set config */
   wifi_set_opmode(STATIONAP_MODE);

   {
      struct station_config *config = (struct station_config *) zalloc(
            sizeof(struct station_config));
      sprintf(config->ssid, "coolssid");
      sprintf(config->password, "coolpass");

      /* need to sure that you are in station mode first,
       * otherwise it will be failed. */
      wifi_station_set_config(config);
      free(config);
   }


- Sat Jan 03, 2015 7:45 am #6176 LS,
When running a RTOS program, at startup and at regular intervals messages are send on the uart.
I am planning to use the uart for communicating with arduino, sending commands and receiving replies.
The "system messages" appearing on the uart will then interfere with this communication

- startup

Code: Select allpp_task_hdl : 3fff1f98, prio:20, stack:512
ApiMsgMutex created
idle_task_hdl : 3fff39f8
tim_task_hdl : 3fff3c58
xPortStartScheduler

OS SDK ver: 0.0.5 compiled @ Dec 25 2014 17:57:07
phy ver: 273, pp ver: 6


I found the "printf" of idle_task_hdl, tim_task_hdl, xportschedular in the freertos implementation, so can eventually update there.
Others not yet detected.

Is not a big issue as I can just ignore all on arduino at when restarted and submit my own "Ready" command.
But nice to have to understand where they come from and how to prevent.

-every 5 minutes this is send :

Code: Select allscandone
add 0
aid 2
aid end
cnt

connected with devolo-T, channel 6
dhcp client start...
ip:10.0.0.211
mask:255.255.255.0
gw:10.0.0.138


These are more troublesome as they directly interfere with arduino communication and need specific handling if I cannot prevent them.
Question is also on why the esp reconnects every 5 minutes. Is that "normal behaviour" for every wifi client ?

Kind regards,
Herman

- Fri Jan 16, 2015 12:31 pm #7453

LS,
When running a RTOS program, at startup and at regular intervals messages are send on the uart.
I am planning to use the uart for communicating with arduino, sending commands and receiving replies.
The "system messages" appearing on the uart will then interfere with this communication

- startup

Code: Select allpp_task_hdl : 3fff1f98, prio:20, stack:512
ApiMsgMutex created
idle_task_hdl : 3fff39f8
tim_task_hdl : 3fff3c58
xPortStartScheduler

OS SDK ver: 0.0.5 compiled @ Dec 25 2014 17:57:07
phy ver: 273, pp ver: 6


I found the "printf" of idle_task_hdl, tim_task_hdl, xportschedular in the freertos implementation, so can eventually update there.
Others not yet detected.

Is not a big issue as I can just ignore all on arduino at when restarted and submit my own "Ready" command.
But nice to have to understand where they come from and how to prevent.

-every 5 minutes this is send :

Code: Select allscandone
add 0
aid 2
aid end
cnt

connected with devolo-T, channel 6
dhcp client start...
ip:10.0.0.211
mask:255.255.255.0
gw:10.0.0.138


These are more troublesome as they directly interfere with arduino communication and need specific handling if I cannot prevent them.
Question is also on why the esp reconnects every 5 minutes. Is that "normal behaviour" for every wifi client ?

Kind regards,
Herman

You can use os_install_putc1 (esp_misc.h for details) to set custom (empty if you don't need printf) putc function. However the startup garbage will still show.

- Fri Jan 16, 2015 5:19 pm #7470 what is the difference with FreeRTOS - is it an OS with a commandline etc; but otherwise the same as the AT SDK?