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2025 |
Dec. 16
  • J-Link
  • News
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An illustration features a J-Link device prominently, showcasing its support for monitor-mode debugging for Armv8-M. The background includes a microchip labeled "Arm." The design emphasizes functionality and connectivity in embedded system development. The company logo "SEGGER" is also visible.

J-Link now supports monitor-mode debugging for Armv8-M devices

SEGGER has expanded the capabilities of its J-Link debug probes to support monitor-mode debugging on Armv8-M devices. Previously limited to Armv7-M cores such as Cortex-M3, Cortex-M4, and Cortex-M7, the feature is now also available for Cortex-M23, Cortex-M33, Cortex-M55, and Cortex-M85.

The monitor mode enables debugging without fully halting the system. While the CPU is being debugged, essential parts of the application can continue to run, allowing, for example, motors to keep operating and communication interfaces to remain active. This contrasts with traditional halt-mode debugging, where a debug request stops program execution and often also peripheral activity.

By extending monitor mode support to Armv8-M, SEGGER enables this advanced debugging approach on a broader range of modern microcontrollers, making it easier to analyze and debug time-critical and safety-relevant applications.

More information about monitor-mode debugging is available here.