can't enter stop mode when connect an emluator

[xleij]

when there's no emluator connected, my program works ok. But when I have my emluator connected, my program will immediately recover from stop mode or may even not enter into stop mode?  

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Do somebody has same experience and give me some ideas?​

[Tesla DeLorean]

Check if there any DBGMCU settings to alter behaviour so it doesn't interfere. Consider different debuggers.

>>Do somebody has same experience and give me some ideas?​

Have your code output flow and telemetry via a serial port so you don't need a debugger to single step or break-point your code. Have a monitor application allowing you to probe internal state, and change level/verboseness of telemetry.