orbuculum ☆

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Description:
Arm Cortex-M SWO/SWV Demux and Postprocess

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: embedded debugging arm swo development

Install: brew install orbuculum

About:
Orbuculum is a utility designed to demultiplex and process ARM Cortex-M Serial Wire Output (SWO) data streams. It captures real-time instrumentation data, such as ITM and ETM packets, from a debug probe and routes them to various outputs. This enables developers to perform printf-style debugging, code coverage analysis, and performance profiling without halting the CPU.

Key Features:

Demultiplexes ITM and ETM data from SWO streams
Supports multiple output sinks including files, network sockets, and GDB servers
Compatible with various debug probes like ST-Link, J-Link, and FTDI
Provides real-time data processing and visualization capabilities

Use Cases:

Real-time printf debugging on embedded ARM Cortex-M targets
Gathering code coverage data for testing embedded software
Performance profiling and function call tracing without CPU halt

Alternatives:

pyOCD – pyOCD is a broader GDB server and debug tool that includes SWO support, whereas Orbuculum is specialized for high-performance SWO demuxing and post-processing.
OpenOCD – OpenOCD is a general-purpose debugger that can handle SWO, but Orbuculum offers more flexible routing and processing options specifically for SWO streams.

Version History

Detected	Version	Rev	Change	Commit
Sep 16, 2025 9:48am		1	VERSION_BUMP	00b22ae0
Oct 11, 2024 8:49pm		0	VERSION_BUMP	6b6c77f3