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How to Debug ARM Microcontrollers with the GNU ARM Eclipse Plug-in

Embedded systems development requires precise visibility into hardware. The ⁠Eclipse Embedded CDT project (formerly known as the GNU ARM Eclipse plug-in) transforms standard Eclipse into a cross-platform IDE. This guide details how to install, configure, and use this environment to debug ARM Cortex-M microcontrollers on bare metal. Prerequisites

Before configuring Eclipse, install these essential external tools:

Java Runtime Environment (JRE): Required to run the core Eclipse platform.

Eclipse IDE: Download the official package for ⁠Eclipse IDE for C/C++ Developers.

ARM Embedded Toolchain: Install the cross-compiler (arm-none-eabi-gcc) via the ⁠xPack Dev Tools Manager.

Hardware Debug Probe: Use hardware options like a SEGGER J-Link, ST-Link, or Pitaya-Link. Step 1: Install the Plug-in

Add ARM extensions to Eclipse using the software update manager: developer.arm.com