CC3200 hangs when shifting from AP 2 STA mode

[Agam 0]

Hi,

I am using CC 3200 in ap mode first then when I feed the cc3200 with ssid and password it starts its STA mode.

 

But sometimes cc3200 hangs when shifting from ap 2 sta mode.

And when the reset button is pressed my cc3200 connects to ssid that i sent.

Why is that happening?

 

Is there any way by which I can do a software reset? I know about the watchdog timer but how to use it in this case.

 

I am pasting my connection code here.

 

 

#ifndef __CC3200R1M1RGC__

#include <SPI.h>

#endif

#include <WiFi.h>

#include <udma_if.h>

const char ssid[] = "CC3200";

const char wifipw[] = "password";

 

const char s[2] = "-";

char *token;

 

String y = "";

char Rssid[100],Rpsk[100];

 

unsigned int Port =2390;

char packetBuffer[255];

IPAddress Ip(255,255,255,255);

char d_name[]="Device Name:Texas Instruments CC3200 Board,\n";

char d_id[]="Device Id:1,\n";

char d_type[]="Device type:Controller with Wi-Fi,\n";

char  ReplyBuffer[] = "Device IP is:";

char b[1024];

int j=0;

 

WiFiUDP Udp;

 

void setup()

{

  Serial.begin(115200);

  pinMode(RED_LED, OUTPUT);  // LED will toggle when clients connect/disconnect

  digitalWrite(RED_LED, LOW);

  

  Serial.print("Setting up Access Point named: ");

  Serial.println(ssid);

  Serial.print("AP uses WPA and password is: ");

  Serial.println(wifipw);

  

  WiFi.beginNetwork((char *)ssid, (char *)wifipw);

 

  while (WiFi.localIP() == INADDR_NONE) 

  {

    // print dots while we wait for the AP config to complete

    Serial.print('.');

    delay(300);

  }

  Serial.println();

  Serial.println("AP active.");

  printWifiStatus();

  Udp.begin(Port);

}

 

unsigned int num_clients = 0;

 

void loop()

{

  unsigned int a, i;

 

  a = WiFi.getTotalDevices();

  

 

  // Did a client connect/disconnect since the last time we checked?

  if (a != num_clients) 

  {

    if (a > num_clients) 

    {  // Client connect

      digitalWrite(RED_LED, !digitalRead(RED_LED));

      Serial.println("Client connected! All clients:");

      for (i = 0; i < a; i++) 

      {

        Serial.print("Client #");

        Serial.print(i);

        Serial.print(" at IP address = ");

        Serial.print(WiFi.deviceIpAddress(i));

        Serial.print(", MAC = ");

        Serial.println(WiFi.deviceMacAddress(i));

      }

    } 

    else 

    {  // Client disconnect

      digitalWrite(RED_LED, !digitalRead(RED_LED));

      Serial.println("Client disconnected.");

    }    

    num_clients = a;

  }

  

  int packetSize = Udp.parsePacket();

  if (packetSize)

  {

    int len = Udp.read(packetBuffer, 255);

    if (len > 0)packetBuffer[len] = 0;

    //unit=atoi(packetBuffer);

    Serial.println(packetBuffer);

         

                 /* get the first token */

                token = strtok(packetBuffer, s);

                int w = 0;

   

                while( token != NULL ) 

               {

                  

                  if(w == 0){

                  strcpy(Rssid,token);

                  Serial.println(Rssid);

                  w++;

                  }else if(w == 1){

                    strcpy(Rpsk,token);

                    Serial.println(Rpsk);

                  }

                  token = strtok(NULL, s);

               }

 

               /* int retVal;

                retVal = sl_WlanSetMode(ROLE_STA);

                retVal = sl_Stop(30);

                retVal= sl_Start(NULL, NULL, NULL);

               */

               UDMAInit();

  sl_Start(NULL, NULL, NULL);

 

  sl_WlanDisconnect();

  

  sl_NetAppMDNSUnRegisterService(0, 0);

  

  sl_WlanRxStatStart();

  

  sl_WlanSetMode(ROLE_STA);

 

  /* Restart Network processor */

  sl_Stop(30);

 

  sl_Start(NULL, NULL, NULL);

 

                // attempt to connect to Wifi network:

                Serial.print("Attempting to connect to Network named: ");

                delay(5000);

                // print the network name (SSID);

                Serial.println(Rssid);

                // Connect to WPA/WPA2 network. Change this line if using open or WEP network:

                WiFi.begin(Rssid, Rpsk);

                while ( WiFi.status() != WL_CONNECTED) {

                  // print dots while we wait to connect

                  Serial.print(".");

                  delay(300);

                }

 

                Serial.println("\nYou're connected to the network");

                Serial.println("Waiting for an ip address");

 

                while (WiFi.localIP() == INADDR_NONE) {

                  // print dots while we wait for an ip addresss

                  Serial.print(".");

                  delay(300);

                }

 

                Serial.println("\nIP Address obtained");

 

                // you're connected now, so print out the status

                printWifiStatus();

   }

 

}

 

void printWifiStatus() {

  Serial.print("SSID: ");

  Serial.println(WiFi.SSID());

  IPAddress ip = WiFi.localIP();

  sprintf(b,"%d.%d.%d.%d,",ip[0],ip[1],ip[2],ip[3] );

  Serial.print("IP Address: ");

  Serial.println(ip);

  long rssi = WiFi.RSSI();

  Serial.print("signal strength (RSSI):");

  Serial.print(rssi);

  Serial.println(" dBm");

}