I can not change AWS IoT custom topics name

[lqhoang]

Hello,

I'm trying to use aws_iot example with nrf9160 DK. But I can only receive publish messages from AWS IOT console from one topic in the example, which is "my-custom-topic/example". I did try to change to different topic names, rebuild solution but new topic does not work. And the it still receives the messages from topic "my-custom-topic/example" even after I flash the new firmware with new topic name. I looked for everywhere to see if the topic is fixed somewhere. But I can not found it. Please help me solve the issue

Regards,

Hoang

[Øyvind]

Hello Hoang, 

Can you please elaborate more on what version of nRF Connect SDK you are using? Do you mean AWS IoT Device Shadow Topics or non-AWS specific topics?

Please provide more information for me to reproduce. 

Thanks. 

Kind regards,
Øyvind

[JadenUE]

Hi Hoang

You may have already come across the answer to this one, but for anyone else facing this issue. 

The default AWS IoT example code sets the connection to persistent by default. As such, changes to the subscribe topic in the firmware are not reflected when the device next connects. 

As such, set the following to fix the issue.

CONFIG_MQTT_CLEAN_SESSION=y

[zciwor]

You are a lifesaver, thank you!