The MQTT-SN examples are described in the example documentation. Most examples are not supported on PCA10059 as the Dongle does not come with any debugging-capabilities, making it hard to use for development. I would recommend you to get some nRF52840 DKs (PCA10056) to use for testing and development.
Which example you should start with depends on what your application is trying to accomplish:
What kind of data will be exchanged between the 30 nodes?
Will all the nodes be FTD/router devices, or will some be (Sleepy-)End-Devices only?
Are you planning to send data to the internet/cloud services?
All examples (except MeshCoP example) are pre-commissioned with default master-key. You can change this to fit your application. CLI example requires you to set PANID and bring up the interfaces/stacks after each boot, but the default master-key is stored and can be used as a pre-commissioned device.
The MQTT-SN examples are described in the example documentation. Most examples are not supported on PCA10059 as the Dongle does not come with any debugging-capabilities, making it hard to use for development. I would recommend you to get some nRF52840 DKs (PCA10056) to use for testing and development.
Which example you should start with depends on what your application is trying to accomplish:
What kind of data will be exchanged between the 30 nodes?
Will all the nodes be FTD/router devices, or will some be (Sleepy-)End-Devices only?
Are you planning to send data to the internet/cloud services?
All examples (except MeshCoP example) are pre-commissioned with default master-key. You can change this to fit your application. CLI example requires you to set PANID and bring up the interfaces/stacks after each boot, but the default master-key is stored and can be used as a pre-commissioned device.
