How to measure CPU Speed

Measuring CPU speed

If the target CPU speed is not known it can be measured with J-Link Commander or J-Link SWO Viewer.

Measuring with J-Link Commander

• Open J-Link Commander
• Connect to your device
• Execute "testcspeed <RamAddress>"

Measure CPU clock in J-Link Commander

Measuring with J-Link SWO Viewer

• Open J-Link SWO Viewer
• Select target device
• Click measure

Measure SWO clock