Asset Tracker Template

Overview

The Asset Tracker Template is a modular framework for developing IoT applications on nRF91-based devices. It is built on the nRF Connect SDK and Zephyr RTOS, and provides a modular, event-driven architecture suitable for battery-powered IoT use cases. The framework supports features such as cloud connectivity, location tracking, and sensor data collection.

The system is organized into modules, each responsible for a specific functionality, such as managing network connectivity, handling cloud communication, or collecting environmental data. Modules communicate through zbus channels, ensuring loose coupling and maintainability.

Supported hardware:

• Thingy:91 X
• nRF9151 DK

If you are new to nRF91 series and cellular IoT, consider taking the Nordic Developer Academy Cellular Fundamentals Course.

Thingy:91 X reporting its location to nRF Cloud running the Asset Tracker Template

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Get started

To set up your development environment, build the application, flash it to your device, and connect it to nRF Cloud, follow the Getting Started guide.

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Documentation

Getting Started	Architecture	Configuration
Modifying	Modules	Connecting
Location Services	Achieving Low Power	Firmware Updates (FOTA)
Testing and CI Setup	Tooling and Troubleshooting	Known Issues
Release Artifacts	Release Notes

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System Overview

Core modules include:

• Main: Implements the business logic and controls the overall application behavior.
• Storage: Stores data from enabled modules.
• Network: Manages LTE connectivity and tracks network status.
• Cloud: Handles communication with nRF Cloud using CoAP.
• Location: Provides location services using GNSS, Wi-Fi, and cellular positioning.
• Button: Reports button press events for user input.
• FOTA: Manages firmware over-the-air updates.

Thingy:91 X specific modules:

• Environmental: Collects environmental sensor data (temperature, humidity, pressure).
• LED: Controls an RGB LED for visual indication.
• Power: Monitors battery status and provides power management.
• UART Power Control: UART suspend/resume on VBUS changes.

Key Features

• State Machine Framework (SMF): Predictable behavior with run-to-completion model
• Message-Based Communication: Loose coupling via zbus channels
• Modular Architecture: Separation of concerns with dedicated threads for blocking operations
• Power Optimization: LTE PSM enabled by default with configurable power-saving features