# MDK-ARM SWD interface in single-step debugging

1.Click Debugging icon to enter debug mode.

![](https://1339817493-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRMO1SOVoE1wKC5%2F-M2HWuqfjq-tAqyjGf2g%2F-M2HX9-60Kpv9l5MAhrs%2Fswd%207.png?generation=1584080171999703\&alt=media)

2.After entering the debug mode, the reader step by step debugging can be performed according to their needs.