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RTT console outputPublic domain image source: https://www.pexels.com/photo/vintage-brown-crt-tv-on-parquet-wood-flooring-333984/

Use RTT with Zephyr when console output via UART just isn’t convenient

Sometimes you don't have extra pins for TX/RX, the UART is already in use, or you don't want to upset critical timing by printing out messages. Real Time Transfer (RTT) is perfect in these situations. It uses the J-Link programmer to transfer console debugging output, without getting a UART involved at all. Good news, it's easy to use with Zephyr!
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Update Firmware (DFU) over cellular (OTA) on the nRF9160 with Golioth

Firmware updates over cellular are a challenging task for embedded devices. In this blog and video, we show how Golioth, Zephyr, MCUboot, and the Nordic Semiconductor nRF9160 make it possible for hardware designs to receive secure and stable firmware releases.
Remote Zephyr DevelopmentPublic domain https://publicdomainvectors.org/en/free-clipart/Internet-e-mail-sign/40098.html https://publicdomainvectors.org/en/free-clipart/Microchip/40844.html https://publicdomainvectors.org/en/free-clipart/Arrow-shapes-vector/24597.html
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Remote Zephyr development using Segger tunnel and a Raspberry Pi

Your target hardware can be in a different part of the world while you develop your Zephyr app. Segger tunnel mode on the J-Link programmer means it doesn't matter if your hardware is on the desk in front of you, or back at the office.

What are Golioth Output Streams?

Golioth Output Streams allow you to pipe every event happening on the Golioth backend out to the cloud of your choice. Exporting large volumes of data into external cloud platforms is now as easy as flipping a switch.

How to parse JSON data in Zephyr

Parsing JSON packets with strings and punctuation delimiters doesn't sound like much fun on a microcontroller. That's why it's really nice that Zephyr has a built-in JSON library. In this post and video we show you how to use it on your data from the cloud.

OTA Firmware update for ESP32 devices

Golioth APIs enables hundreds of connected hardware devices to do firmware updates. Espressif's ESP32 now joins that group with their port of MCUboot to their platform. This post shows how to enable this open source bootloader.

Debugging Zephyr for Beginners: printk() and the Logging Subsystem

Zephyr has a number of tools to aid in debugging during your development process. Today we're focusing on the most available and widely useful of these: printing message to a terminal and enabling logging messages. New to Golioth? Sign…

Prototype your data outputs with the Golioth Query Builder

IoT devices have the potential to generate a LOT of data. That's kind of the point, right? You have a fleet spread out among a geographic area, or factory, or warehouse, or wherever you're trying to measure data and you pipe it all back to the…
Zephyr wrapped up in a box

How to build your Zephyr app in a standalone folder

If you're like me, you installed Zephyr and began making your own changes to the sample applications that came with the toolchain. But at some point--either for personal project repository tracking or building out a professional project--your…
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Using WebSockets with Grafana

Golioth has just released a Grafana WebSocket Data Source plugin. This open source plugin allows you to create a graphic dashboard using data from any WebSocket URL that uses JSON formatting. This means you can you directly connect the Golioth…