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The device will not auto connect to an AP from stored profiles in station mode

veloso Tsai
Prodigy 140 points

Dear all

I can get SL_WLAN_CONNECT_EVENT and SL_NETAPP_IPV4_IPACQUIRED_EVENT after my device connect to an AP.

Then I try the following test in order to check the reconnect capability.

1. power off my AP.

2. the device will receive SL_WLAN_DISCONNECT_EVENT

3. power on my AP

Because I already set auto connect policy( using sl_WlanPolicySet) at the beginning.

Therefore I suppost that I could get SL_WLAN_CONNECT_EVENT after my AP is power on.

below is the code flow :

1. sl_start(0,0,0) to init device

2. sl_WlanProfileDel(0xFF) to make sure there is only one AP information by the following ProfileAdd function call

3. sl_WlanPolicySet(SL_POLICY_CONNECTION, SL_CONNECTION_POLICY(1, 0,0,0,0), NULL, 0) set AUTO connect policy

3. sl_WlanProfileAdd add one AP information

4. Get SL_WLAN_CONNECT_EVENT after my device connect to an AP

5. Get SL_WLAN_DISCONNECT_EVENT after I power off my AP

6. NO SL_WLAN_CONNECT_EVENT when I powr on my AP

From the spec, the device should try to connect to an AP from the stored profile after setting sl_WlanPolicySet.

How should I set in order to enable AUTO reconnect capabiility ?

Thank you

Veloso

  • 0
    TI__Genius 16190 points
    Veloso,

    I'll check it on my setup and get back. Which SP and SDK version are you on? And, did you modify the scan cycle/interval?

    -/Praneet
  • 0 in reply to Praneet Kumar
    Prodigy 140 points
    Hi Praneet

    Thanks for you help
    My SDK version is 1.0.0.1
    Howver I am not sure what my SP version is.
    Thyerefore I try to get it from sl_DevGet:
    NWP: 2.0.7.0
    FW: 0.0.4.1

    And I do not use any scan policy in my project.

    Veloso
  • 0 in reply to veloso Tsai
    TI__Genius 16190 points

    Veloso,

    You are on an older version of SP - Suggest you upgrade to the latest.

    I was not able to reproduce the issue w/ the latest package. Below is the code-snippet and the logs

    static long SetConnectionPolicy()

{

   unsigned char policyVal;

   long lRetVal = -1;

   /* Clear all stored profiles and reset the policies */

   lRetVal = sl_WlanProfileDel(0xFF);

   ASSERT_ON_ERROR(lRetVal);

   lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION, SL_CONNECTION_POLICY(0,0,0,0,0), 0, 0);

   ASSERT_ON_ERROR(lRetVal);

   //Add Profile

   /* user needs to change SSID_NAME = "<Secured AP>"

            SECURITY_TYPE = SL_SEC_TYPE_WPA

            SECURITY_KEY = "<password>"

     and set the priority as per requirement

     to connect with a secured AP */

   SlSecParams_t secParams;

   secParams.Key = SECURITY_KEY;

   secParams.KeyLen = strlen(SECURITY_KEY);

   secParams.Type = SECURITY_TYPE;

   lRetVal = sl_WlanProfileAdd(SSID_NAME,strlen(SSID_NAME),0,&secParams,0,1,0);

   ASSERT_ON_ERROR(lRetVal);

   //set AUTO policy

   lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,

                     SL_CONNECTION_POLICY(1,0,0,0,0),

                     &policyVal, 1 /*PolicyValLen*/);

   ASSERT_ON_ERROR(lRetVal);

   while(1)

   {

       //wait until IP is acquired

       while((!IS_CONNECTED(g_ulStatus)) || (!IS_IP_ACQUIRED(g_ulStatus)))

       {

           _SlNonOsMainLoopTask();

       }

       UART_PRINT("\n\r===>>> Device connected to AP\n\r");

       // Wait

       while(IS_CONNECTED(g_ulStatus))

       {

           _SlNonOsMainLoopTask();

       }

       CLR_STATUS_BIT(g_ulStatus, STATUS_BIT_CONNECTION);

       CLR_STATUS_BIT(g_ulStatus, STATUS_BIT_IP_AQUIRED);

       UART_PRINT("\n\r===>>> Device disconnected from AP\n\r");

   }

}

    
		 *************************************************
		           CC3200 CONNECTION_POLICY Application       
		 *************************************************



Host Driver Version: 1.0.0.1
Build Version 2.2.0.1.31.1.2.0.2.1.0.3.23
Device is configured in default state 
Device started as STATION 
[WLAN EVENT] STA Connected to the AP: TP-LINK-APK2 ,BSSID: a0:f3:c1:b1:d6:6e
[NETAPP EVENT] IP Acquired: IP=192.168.0.100 , Gateway=192.168.0.1

===>>> Device connected to AP
[WLAN ERROR]Device disconnected from the AP AP: TP-LINK-APK2,BSSID: a0:f3:c1:b1:d6:6e on an ERROR..!! 

===>>> Device disconnected from AP
[WLAN EVENT] STA Connected to the AP: TP-LINK-APK2 ,BSSID: a0:f3:c1:b1:d6:6e
[NETAPP EVENT] IP Acquired: IP=192.168.0.100 , Gateway=192.168.0.1

===>>> Device connected to AP
[WLAN ERROR]Device disconnected from the AP AP: TP-LINK-APK2,BSSID: a0:f3:c1:b1:d6:6e on an ERROR..!! 

===>>> Device disconnected from AP
[WLAN EVENT] STA Connected to the AP: TP-LINK-APK2 ,BSSID: a0:f3:c1:b1:d6:6e
[WLAN ERROR]Device disconnected from the AP AP: TP-LINK-APK2,BSSID: a0:f3:c1:b1:d6:6e on an ERROR..!! 
[WLAN EVENT] STA Connected to the AP: TP-LINK-APK2 ,BSSID: a0:f3:c1:b1:d6:6e
[NETAPP EVENT] IP Acquired: IP=192.168.0.100 , Gateway=192.168.0.1

===>>> Device connected to AP
[WLAN ERROR]Device disconnected from the AP AP: TP-LINK-APK2,BSSID: a0:f3:c1:b1:d6:6e on an ERROR..!! 

===>>> Device disconnected from AP
[WLAN EVENT] STA Connected to the AP: TP-LINK-APK2 ,BSSID: a0:f3:c1:b1:d6:6e
[NETAPP EVENT] IP Acquired: IP=192.168.0.100 , Gateway=192.168.0.1

===>>> Device connected to AP

    -/Praneet

  • 0 in reply to Praneet Kumar
    TI__Genius 16190 points
    Veloso,

    Hope the snippet helps.
    I'm closing this thread - Please let me know if you need additional information. I suggest you open a new thread w/ references to the current one for us to track it better.

    -/Praneet