Blog
Over-the-Air Firmware Updates on Zephyr RTOS with Spotflow
Learn how to push firmware updates to Zephyr RTOS devices in the field using Spotflow OTA updates. A complete walkthrough on NXP FRDM-RW612: from west workspace setup and MCUboot integration to a live portal deployment with automatic rollback safety.
Zephyr RTOS Observability: From Built-In Logging and Core Dumps to Remote Field Diagnostics
How Zephyr's logging subsystem and core dump service work, where they fall short once devices ship, and how Spotflow extends them for secure remote log collection, crash diagnostics, and fleet-wide visibility.
Debugging a Zephyr RTOS Crash with Spotflow AI Analysis
Learn how to collect core dumps from a Zephyr RTOS device in the field and use Spotflow AI Crash Analysis to identify the root cause - without a serial cable. Follow a realistic null function-pointer bug from the warning log to the AI-generated root cause explanation.
Debugging ESP32 Devices in the Field
Learn how Spotflow's logs, metrics, alerts, and crash reports work together as one field-debugging workflow for ESP32 firmware. Follow a concrete failure scenario from first warning signs to crash analysis, and see what each instrument reveals.
Custom Metrics & Dashboards for Embedded Devices
Learn how to define and report custom metrics from Zephyr or any MQTT-capable device, and build custom dashboards in Spotflow for operational monitoring and product analytics. This post uses a smart lock fleet as a running example to illustrate the full pipeline from firmware instrumentation to business insights.
Send Logs from Zephyr to the Cloud with Spotflow
This post walks through connecting an NXP FRDM-RW612 board running Zephyr to the Spotflow observability platform using Spotflow Zephyr logging example. By the end, your device will be streaming logs to the cloud while still printing them on UART, with no changes to your application code.