MQTT Client - Problem with CLIENTID

shashank nandwana

Other Parts Discussed in Thread: CC3200SDK, CC3200

Hello,

In MQTT Application when i am going to change CLIENTID as NULL the all my code is freeze in CC3200SDK_1.3.0 but same works in older version of SDK i.e CC3200SDK_1.2.0

Why I'm going to make as NULL reason is - I've 2 CC3200 LP and both are running on the same server.If I allocate same CLIENTID i.e. "user1" to both then one will work and 2 one gets disconnected and vice versa because both client is having same ID. I want to make it dynamic or make it as null so both can work at same time on same server.

As above I mentioned as NULL ClientID is working well in old sdk but not working in new sdk .I don't want to change every time the CLIENTID in the code.

connect_config usr_connect_config[] =
{
    {
        {
            {
                SL_MQTT_NETCONN_URL,
                SERVER_ADDRESS,
                PORT_NUMBER,
                0,
                0,
                0,
                NULL
            },
            SERVER_MODE,
            true,
        },
        NULL,
        "user1",         
        NULL,
        NULL,
        true,
        KEEP_ALIVE_TIMER,
        {Mqtt_Recv, sl_MqttEvt, sl_MqttDisconnect},
        TOPIC_COUNT,
        {TOPIC1, TOPIC2, TOPIC3},
        {QOS2, QOS2, QOS2},
        {WILL_TOPIC,WILL_MSG,WILL_QOS,WILL_RETAIN},
        false
    }
};

Best Regards,

Shashank

over 7 years ago

0 Kobi Leibovitch over 7 years ago

TI__Guru 63006 points

Hi Shashank,

You can base the client ID on the unique MAC Address of each LP.

Br,
Kobi

0 shashank nandwana over 7 years ago in reply to Kobi Leibovitch

Expert 1760 points

Hi Kobi,

Thanks for the reply.

Can you please let me know the procedure,how can I fetch the mac address of each LP.

Best Regards,
Shashank

0 shashank nandwana over 7 years ago in reply to shashank nandwana

Expert 1760 points

Hi Kobi,

How can I fetch the mac address of LP?
Also,I want to run this in beginning of the code. So it can set the client id and then communicate.

Br,
Shashank

0 shashank nandwana over 7 years ago in reply to shashank nandwana

Expert 1760 points

Hi Kobi,

Below code I'm using to fetch the mac address of device but unable to get it. Is their anything goes wrong in the code?

char * getMacAddress()
{
	int i;

	unsigned char macAddressVal[SL_MAC_ADDR_LEN];
	unsigned char macAddressLen = SL_MAC_ADDR_LEN;

	sl_NetCfgGet(SL_MAC_ADDRESS_GET,NULL,&macAddressLen,(unsigned char *)macAddressVal);

	char macAddressPart[2];
	static char macAddressFull[18]; //18

	for (i = 0 ; i < 6 ; i++)
	{
		sprintf(macAddressPart, "%02X", macAddressVal[i]);
		strcat(macAddressFull, (char *)macAddressPart);
		strcat(macAddressFull, ":");
	}

	macAddressFull[17] = '\0'; // Replace the the last : with a zero termination


	return macAddressFull;
}

Thanks & Regards,

Shashank

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MQTT Client - Problem with CLIENTID