CC3220SF-LAUNCHXL: MQTTClient_connect() doesn't return ; Warnings like "#48-D incompatible redefinition of macro "O_CREAT" (declared at line 59 of "C:/ti/ccsv8/tools/compiler/ti-cgt-arm_18.12.0.LTS/include/file.h")"

Part Number: CC3220SF-LAUNCHXL

Hello experts,

I have an application in which CC3220SF launchpad is connected to another controller via UART1,PC via UART0,SD card and Now I want to connect it to a MQTT broker "broker.hivemq.com"

First,to get acquainted to MQTT ,I tried changing the broker url in MQTT demo provided in SDK ,added a topic to publish and the code works fine.

Till now I have only implemented the part where SL device connects to a WiFi network ,and then it tries to connect to the mqtt broker as I have stated above.

1. Elaborating about the warning I got:

To implement MQTT in my application I ,added the proper includes, added ARM linker include paths and library locations and the code compiles but i get warning like 

" Description Resource Path Location Type
#48-D incompatible redefinition of macro "O_CREAT" (declared at line 59 of "C:/ti/ccsv8/tools/compiler/ti-cgt-arm_18.12.0.LTS/include/file.h") .ccsproject /Dahipuri line 80, external location: C:\ti\simplelink_cc32xx_sdk_3_20_00_06\source\ti\posix\ccs\mqueue.h C/C++ Problem" 

There are total 5 warning all related to mqueue.h for O_CREAT , O_EXCL ,O_RDONLY, O_RDWR,O_WRONLY.

2. Now moving on to MQTTClient_connect() not returning: 

Firstly, I have added all the global includes,declarations from mqtt example 's mqtt_client_app.c file in my application's mainfile.I have added network_if , and client_cbs in my project directory and have included them in my main

I have a task running in the mainfile called as dahipuriMain() which is the only task that is ready to run as soon as SYSBIOS starts (other tasks are behind a semaphore).

In that task, i have added :

SlNetIf_init(0);
    SlNetIf_add(SLNETIF_ID_1, "CC32xx",
                       (const SlNetIf_Config_t *)&SlNetIfConfigWifi,
                       SLNET_IF_WIFI_PRIO);
    SlNetSock_init(0);
    SlNetUtil_init(0);

followed by: 

    pthread_attr_init(&pAttrs_spawn);
    priParam.sched_priority = SPAWN_TASK_PRIORITY;
    retc = pthread_attr_setschedparam(&pAttrs_spawn, &priParam);
    retc |= pthread_attr_setstacksize(&pAttrs_spawn, TASKSTACKSIZE);
    retc |= pthread_attr_setdetachstate(&pAttrs_spawn, PTHREAD_CREATE_DETACHED);
    retc = pthread_create(&spawn_thread, &pAttrs_spawn, sl_Task, NULL)
gApConnectionState = Mqtt_IF_Connect();
    if(gApConnectionState<0){
        System_printf("problem connecting to AP\r\n");
    }
    if(!Mqtt_start()){
       System_printf("Message queue screwed up\r\n");
   }
    retc=Mqtt_client_connect();
    if(!retc)
    {
      System_printf("MQTT Connection failed\r\n");
   }

while (1) {
        UART_read(uart0, &input,1);
        UART_read(uart1, &input1,1);
        System_flush();
    }

I have changed some of the functions from the MQTT Demo by removing display banners.

Mqtt_IF_Connect() is as follows:

int32_t Mqtt_IF_Connect()
{
    int32_t lRetVal;
    char SSID_Remote_Name[32];
    int8_t Str_Length;

    memset(SSID_Remote_Name, '\0', sizeof(SSID_Remote_Name));
    Str_Length = strlen(SSID_NAME);

    if(Str_Length)
    {
        /*Copy the Default SSID to the local variable                        */
        strncpy(SSID_Remote_Name, SSID_NAME, Str_Length);
    }

    /*Display Application Banner                                             */
  //  DisplayBanner(APPLICATION_NAME);

    /*Reset The state of the machine                                         */
    Network_IF_ResetMCUStateMachine();

    /*Start the driver                                                       */
    lRetVal = Network_IF_InitDriver(ROLE_STA);
    if(lRetVal < 0)
    {
        System_printf("Failed to start SimpleLink Device\n\r", lRetVal);
        return(-1);
    }

    /*switch on Board_GPIO_LED2 to indicate Simplelink is properly up.       */
   // GPIO_write(Board_GPIO_LED2, Board_GPIO_LED_ON);

    /*Start Timer to blink Board_GPIO_LED0 till AP connection                */
   // LedTimerConfigNStart();

    /*Initialize AP security params                                          */
    SecurityParams.Key = (signed char *) SECURITY_KEY;
    SecurityParams.KeyLen = strlen(SECURITY_KEY);
    SecurityParams.Type = SECURITY_TYPE;

    /*Connect to the Access Point                                            */
    lRetVal = Network_IF_ConnectAP(SSID_Remote_Name, SecurityParams);
    if(lRetVal < 0)
    {
        System_printf("Connection to an AP failed\n\r");
        return(-1);
    }

    sleep(2);

    return(0);
}

Mqtt_start() is as follows: 

bool Mqtt_start(){
     mq_attr attr;
     unsigned mode = 0;

        /*sync object for inter thread communication                             */
        attr.mq_maxmsg = 10;
        attr.mq_msgsize = sizeof(struct msgQueue);
        g_PBQueue = mq_open("g_PBQueue", O_CREAT, mode, &attr);

        if(g_PBQueue == NULL)
        {
            System_printf("MQTT Message Queue create fail\n\r");
            //gInitState &= ~MQTT_INIT_STATE;
            return FALSE;
        }


return TRUE;
 }

Mqtt_client_connect() is as follows:

int32_t Mqtt_client_connect(){
    int32_t lRetVal = -1;
    int32_t iCount = 0;
    MqttClientExmple_params.clientId = ClientId;
    MqttClientExmple_params.connParams = &Mqtt_ClientCtx;
    MqttClientExmple_params.mqttMode31 = MQTT_3_1;
    MqttClientExmple_params.blockingSend = true;
    gMqttClient = MQTTClient_create(MqttClientCallback,
                                        &MqttClientExmple_params);
    if(gMqttClient == NULL)
        {

            System_printf("Mqtt connection failed\r\n");
            return(-1);
        }
    MQTTClient_set(gMqttClient, MQTTClient_WILL_PARAM, &will_param,
                     sizeof(will_param));
    System_flush();
    lRetVal = MQTTClient_connect(gMqttClient);
    UART_PRINT("lRetVal = %d",lRetVal);
    if(0 > lRetVal)
         {
             /*lib initialization failed                                      */
             UART_PRINT("Connection to broker failed, Error code: %d\n\r",
                        lRetVal);

             gUiConnFlag = 0;
         }
         else
         {
             gUiConnFlag = 1;
         }
         /*Subscribe to topics when session is not stored by the server       */
         if((gUiConnFlag == 1) && (0 == lRetVal))
         {
             uint8_t subIndex;
             MQTTClient_SubscribeParams subscriptionInfo[
                 SUBSCRIPTION_TOPIC_COUNT];

             for(subIndex = 0; subIndex < SUBSCRIPTION_TOPIC_COUNT; subIndex++)
             {
                 subscriptionInfo[subIndex].topic = topic[subIndex];
                 subscriptionInfo[subIndex].qos = qos[subIndex];
             }

             if(MQTTClient_subscribe(gMqttClient, subscriptionInfo,
                                     SUBSCRIPTION_TOPIC_COUNT) < 0)
             {
                 UART_PRINT("\n\r Subscription Error \n\r");
                 MQTTClient_disconnect(gMqttClient);
                 gUiConnFlag = 0;
             }
             else
             {
                 for(iCount = 0; iCount < SUBSCRIPTION_TOPIC_COUNT; iCount++)
                 {
                     UART_PRINT("Client subscribed on %s\n\r,", topic[iCount]);
                 }
             }
         }
         return 0;
}

I can successfully connect to Wifi as I get output on Console stating received IP( as I have attached)
I put a breakpoint just after MQTTClient_connect(); and it never occurs, I even put a breakpoint after Mqtt_client_connect() in my dahipurimain(main task) which is never reached.I am not sure what I have missed in this program.
I am adding mainfile of my application(it contains all the code that i have currently written) and the cio console output

Please help me out.
Thanks,
Vedant

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