Ozone

Compilers & IDEs

Cross-platform debugger and performance analyzer with source/assembly debug, timeline visualization, power profiling, and code coverage. Free with J-Link. India pricing and local support from GSAS.

Debug

Source + assembly level

Timeline

Real-time execution timeline

Power

Power profiling

Coverage

Code coverage analysis

Hardware

Works with J-Link

License

Free with J-Link

Request a Quote Book a Demo

Authorized SEGGER partner

Local FAE & application engineering

Hands-on training & integration

Manufacturer warranty

Overview

About Ozone

SEGGER Ozone is a standalone cross-platform debugger and performance analyzer that provides deep visibility into embedded application behavior beyond what IDE-integrated debuggers typically offer. Purpose-built for J-Link debug probes, Ozone delivers source-level and assembly-level debugging alongside advanced analysis features, all in a single tool that runs on Windows, macOS, and Linux.

Ozone debugger

Key Features

Feature	Description
Source-Level Debug	Step through C/C++ source with full variable inspection, watch expressions, and call stack
Assembly Debug	Instruction-level stepping with register view and memory dump
Execution Timeline	Real-time visualization of task execution, ISR activity, and idle periods
Power Profiling	Correlate code execution with power consumption measurements via J-Link
Code Coverage	Statement, branch, and MC/DC coverage metrics for safety certification
Data Trace	Monitor variable values over time without halting the target
Scripting	JavaScript-based automation for repeatable debug sessions and regression testing
RTOS Awareness	Task lists, stack usage, resource views for embOS, FreeRTOS, and others
Multi-Core	Debug multiple cores simultaneously with synchronized views
Console / Terminal	Integrated RTT terminal for printf-style debug output
ELF/DWARF Parsing	Direct loading of ELF files, no IDE project required
Cross-Platform	Native builds for Windows, macOS, and Linux

Timeline and Profiling

The execution timeline view transforms debugging from a point-in-time breakpoint exercise into a continuous behavioral analysis. Developers can see exactly when tasks execute, how long ISRs take, where idle time accumulates, and how power consumption correlates with code execution patterns. This visibility is essential for optimizing battery life in IoT devices, meeting real-time deadlines in control systems, and diagnosing intermittent timing bugs that are invisible with traditional breakpoint debugging.

Hardware-free debugging with Ozone-Sim

Ozone can also debug and analyze firmware with no target hardware at all, using Ozone-Sim, SEGGER’s instruction set simulator for Arm and RISC-V. Ozone-Sim runs inside Ozone as a selectable target interface, so the same source-level debugging, profiling, and coverage views work whether the firmware is running on a J-Link-connected board or in simulation on a PC, with no J-Link required.

Code Coverage for Safety Certification

Watch the SEGGER Ozone introduction

Ozone is free for use with any J-Link debug probe, making it an immediate upgrade for teams already invested in the SEGGER debug ecosystem. Code coverage analysis identifies untested code paths, critical for safety-certified development under DO-178C, IEC 62304, and ISO 26262 where coverage metrics are mandatory deliverables. The combination of Ozone’s analysis capabilities with J-Link’s trace hardware creates a comprehensive debug and profiling environment at no additional software cost.

Blog

SEGGER Insights

SEGGER Ozone-Sim hardware-free instruction set simulator for Arm and RISC-V firmware, evaluated in India by GSAS Micro Systems

Ozone SEGGER

Ozone-Sim: SEGGER's Hardware-Free Embedded Simulator for Arm and RISC-V

SEGGER's new Ozone-Sim instruction set simulator runs Arm and RISC-V firmware on a PC at hundreds of millions of instructions per second (up to 700 million on an AMD Ryzen 9, per SEGGER), no J-Link and no target board required. Here is how it works with Ozone, how it plugs into CI/CD, and how to evaluate it in India with GSAS.

8 Jul 2026 · 5 min read

Indian firmware engineer writing a Lua automation script in SEGGER Ozone debugger with J-Link PRO probe attached to a Cortex-M bring-up board

Ozone SEGGER

SEGGER Ozone Lua Scripting for Indian Advanced Debug and Test Automation Workflows

Ozone's built-in Lua scripting engine turns the standalone graphical debugger into a test automation platform for Indian bring-up, soak testing, and IEC 62304 evidence capture.

15 Apr 2026 · 10 min read

SEGGER J-Link PRO debugging dual-core i.MX RT1170 in an Indian embedded engineering lab

J-Link SEGGER

Multi-Core Debug on i.MX RT1170, nRF5340, and RP2350 with SEGGER J-Link and Ozone

Dual-core is the new normal. Indian consumer electronics, automotive, and medical-device teams building on NXP i.MX RT1170, Nordic nRF5340, and Raspberry Pi RP2350 face debug challenges no single-core tutorial covers. Here's the J-Link and Ozone workflow that turns multi-core debug from a days-long nightmare into a morning.

14 Apr 2026 · 8 min read

Common questions about Ozone

What is the difference between Ozone and Ozone-Sim?

Ozone is the graphical debugger and performance analyzer that runs firmware on real hardware over a J-Link or J-Trace probe; Ozone-Sim is an instruction set simulator that runs the same firmware on a PC with no hardware. They work together, and you can switch between real and simulated targets.

Can Ozone debug without any hardware?

Yes, with Ozone-Sim. Ozone-Sim lets Ozone run and analyze Arm and RISC-V firmware entirely in software, no J-Link or target board required.

Is Ozone free to use?

Ozone is free for use with any J-Link debug probe.

Which architectures does Ozone support?

Arm Cortex-M, Cortex-A, and Cortex-R, plus RISC-V.

Which operating systems does Ozone run on?

Windows, macOS, and Linux.

Interested in Ozone?

Get pricing, an evaluation unit, or a technical consultation from our application engineers.