nRF52840, MQTT, TLS1.2

[Reto]

Dear Nordic,

What I want to do:

• Battery powered sensor network
• One gateway (BLE --> WLAN) with a serial-to-wifi chip connected to nRF52
• MQTT (IBM Bluemix --> CoAP is not supported)
• TLS1.2 (IBM Bluemix)
• Long range (Bluetooth 5), indoor and outdoor

So I guess I need a nRF52840. What is the best SDK to start with?

• nRF5 SDK for IoT?
• nRF5-SDK V13.0.0?
• Any good example around?

Thank you!

[Petter Myhre]

Unfortunately, we do not have support for IPSP router role, which you would need in the gateway.

See this for more information.

[Reto]

Hi Petter

Let's say I would use a ESP32 as IoT Gateway (running MQTT, TLS1.2, Wifi, Bluetooth 4.2) and nRF52840 as sensor nodes (running MQTT, TLS1.2, Bluetooth 4.2, TLS1.2).

• Am I still able to update the nRF52840 over-the-air (SoftDevice, application)?
• I guess I should use the nRF5 IoT SDK with MQTT clients on the nRF52840?

Drawback would be: BLE 4.2 (range) compared to BLE 5.

Thank you Petter.