MQTT LST sample

[thomas oggier]

Hello,

Does anyone has an example of MQTT LST application for nrf9160.

I've tried to use the MQTT_Simple sample with LST.

I've add  "CONFIG_MQTT_LIB_TLS=y" change the port to "test.mosquitto.org:8883" and add the client settings.

	
	client->password = &password; // Add here
	client->user_name = &user_name; // Add here
	
	
	/* MQTT transport configuration *//* MODIFIED HERE */
    #if defined(CONFIG_MQTT_LIB_TLS)
       client->transport.type = MQTT_TRANSPORT_SECURE;
       client->transport.tls.config.peer_verify = 0;
       client->transport.tls.config.cipher_count = 0;
       client->transport.tls.config.cipher_list = NULL;
       client->transport.tls.config.sec_tag_count = 0;
       client->transport.tls.config.hostname = NULL;
    #else
       client->transport.type = MQTT_TRANSPORT_NON_SECURE;
    #endif

But I don't know where and how to use the different certificate.

[Håkon Alseth]

Hi,

 

In prj.conf, you should add these in addition to the #if defined(CONFIG_MQTT_LIB_TLS) logic you have:

CONFIG_MQTT_BROKER_PORT=8883
CONFIG_MQTT_LIB_TLS=y

 

As shown on the test server description:

https://test.mosquitto.org/

 

You do not need a password + username when accessing on port 8883, only TLS. For connection to port 8884, a keypair is required, per their instruction.

To write these, it is very similar how its done using nrf_cloud certificates.

 

Kind regards,

Håkon