Now you can set your Golioth credentials from the Zephyr device shell. You also have the option to pull them from the Golioth cloud and automatically send them to the device from a single command on the command line. These new features use the Zephyr settings subsystem where they are stored in flash memory so that they persist after rebooting.
I needed to build 15 sets of the same firmware, but pass three unique variables for each copy. Zephyr has a solution for this: the Kconfig system. You can declare your own custom symbol, then set the value by passing a command line argument at compile time. Here's how to do this with your own projects.
The ESP32 is a great way to get up and running quickly on Golioth. This article, and the accompanying video, walks through the process of provisioning an ESP32, installing the Zephyr RTOS toolchain, then loading and running your firmware.
Watch Golioth showcase a Zephyr-based device running OpenThread and the Golioth SDK connecting to the internet via a Border Router. Golioth manages the connection and handles data going to and from the nRF52840 based node.
Sensor drivers sometimes need to live outside of the Zephyr tree, for privacy or maintenance reasons. This post shows how to operate a sensor driver "Out-Of-Tree", and in the process, showcases how sensor drivers work.
The ESP32 can be used as an AT modem. This approach makes it really easy to add an internet connection to devices that normally don't have one, like the Nordic nRF52840DK.
