Can I Use Thingy91 To Route IP Traffic From Raspberry Pi Instead Of Ethernet?

[xr47]

I am developing a cellular backhaul for an IoT application that utilizes a Raspberry Pi 4. I have one Thingy91, and wanted to know if there are any sample applications available that would achieve the following functionality:

In the event the Raspberry Pi is in an environment with no ethernet or wifi available, the Thingy91 acts as a WiFi hotspot. This would allow the Pi to stay connected to the internet and to be able to send data as normal. For example, using the Pi's command-line interface to ping an IP address and get the appropriate response. I run the Mosquitto MQTT service on my Pi, and I want to be able to continue publishing data to the broker seamlessly. 

Please let me know if any such sample applications exist. If not, please point me in the right direction.

Thank you!

[rajeev]

Have you read or checkout this sample for nRF91:
https://github.com/nrfconnect/sdk-nrf/tree/main/applications/serial_lte_modem

and the docs:
developer.nordicsemi.com/.../slm_description.html

You can use RPi as the main MCU to control the nrf91 on Thingy 91 to RX and TX cellular data.

[xr47]

Yes I've looked over this sample. I'm more interested in exposing the Thingy91 as a network interface and allowing the Raspian network manager deal with tx/rx than sending AT commands one by one. Essentially, I'm interested in using the Thingy91 as a wifi hotspot.

[Marshall]

Yes we have done this using the Modem Shell (MOSH) example, this allows the Pi to establish a PPP connection to the NRF9160 using a serial port. 

[xr47]

For whatever reason, I'm unable to flash the MoSh example using the nrf Connect Programmer, due to some MCUBoot image parse failure. Would you happen to know of a clean .hex file to use for that sample? I only need the PPP overlay, but having the entire example wouldn't hurt for proof of concept.

[Øyvind]

Hello, 

Is this related to you last ticket 302267? If so please see my answer. 

Kind regards,
Øyvind