CCS/CC3120BOOST: mqttClient and provisioning

Wilson Tu

Part Number: CC3120BOOST

Tool/software: Code Composer Studio

I use provisioning to connect AP, then ping "mqtt server" is success, but cannot broker.

DHCP is ON
IP 192.168.1.158
MASK 255.255.255.0
GW 192.168.1.1
DNS 192.168.1.1
Reply from 192.168.1.170: SUCCESS, Time=111ms, Overall Stat Success (1/1)
[MqttClient_start] Connection to broker fail (-2022)

When I use mqttclient sample code to connect AP, I can to broker.

IP : 192.168.1.158
Mask : 255.255.255.0
Gateway: 192.168.1.1
DNS : 0.0.0.0
[MqttClient_start] Subscription success (0)

refer sample code:
\simplelink_sdk_wifi_plugin_1_60_00_07\examples\rtos\MSP_EXP432E401Y\demos\mqtt_client\tirtos\ccs
\simplelink_sdk_wifi_plugin_1_60_00_07\examples\rtos\MSP_EXP432E401Y\demos\provisioning\tirtos\ccs

I don't know why DNS is different,

how do I setup when I use provisioning to connect?

over 7 years ago

0 Alexis Crandall20 over 7 years ago

TI__Genius 15590 points

Hi Wilson,

I'm trying to understand your use case. Are you saying you're trying to add provisioning to the mqtt_client example?

Thanks,
Alexis

0 Wilson Tu over 7 years ago in reply to Alexis Crandall20

Prodigy 20 points

Hi Alexis,
Yes.

0 Wilson Tu over 7 years ago in reply to Alexis Crandall20

Prodigy 20 points

Hi Alexis,

any update?

0 Alexis Crandall20 over 7 years ago in reply to Wilson Tu

TI__Genius 15590 points

Hi Wilson,

The error code returned (-2022) indicates that the Mutex creation failed...so that could be a clue as to where the issue is.

The other thing I would suggest in order to rule out whether or not it is the DNS causing you issues is to modify the MQTT client connection parameters structure in order to reference the server IP address instead of the domain name. This should take the need to perform DNS out of the equation. To do this, simply change SERVER_ADDRESS to SERVER_IP_ADDRESS in the Mqtt_ClientCtx struct as shown below:

#else
MQTTClient_ConnParams Mqtt_ClientCtx =
{
    MQTTCLIENT_NETCONN_URL,
    SERVER_IP_ADDRESS,
    PORT_NUMBER, 0, 0, 0,
    NULL
};
#endif

Thanks,

Alexis

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CCS/CC3120BOOST: mqttClient and provisioning