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  VS Arduino › Visual Micro › Hardware Debugging (GDB, GDB WiFi, GDB Stub) › Debug window do not pop up
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Hot Topic (More than 8 Replies) Debug window do not pop up (Read 1775 times)
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Debug window do not pop up
Jul 15th, 2024 at 5:30am
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I am trying to use debugging feature of VM  using a J-link segger probe. I use a microchip samd51 processor. Everything works fine the first times when I create a new folder and compile it. Debug window opens and I can place breakpoints and read variables. But after a few times of fixing errors and saving and opening the files, the debug feature and windows do not show up. I can only compile and download. But I cannot see debug window etc. Any clue what maybe wrong?
  
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Re: Debug window do not pop up
Reply #1 - Jul 15th, 2024 at 8:31am
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Thanks for the report.

Are you starting the debugging session using Debug > Start, or using Debug > Attach to Process?

When the debugging session fails to launch, do you see any output in the Output > Debug window at all?
  
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Re: Debug window do not pop up
Reply #2 - Jul 15th, 2024 at 5:49pm
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I tried both method. It worked once using debug attached. But now I get the attached error using both Debug>Attach and Debug>start .
  
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Re: Debug window do not pop up
Reply #3 - Jul 16th, 2024 at 8:48am
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Just to confirm, when you make changes to the source code, it is being uploaded and the debugging session started afresh each time?

When the debugging session fails to start, does re-plugging the probe and the board help in any way?
  
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Re: Debug window do not pop up
Reply #4 - Jul 16th, 2024 at 5:13pm
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I cleaned the build and compiled and it seems the error goes away. However I still do not get the correct debug window where I can hover over variables and see their value. There are several different buttoms for compiling and debugging. There are black colored start and stop bottom in a VM section and there are green and red bottoms in VC. Also there is Debug in drop down menu of VC and there is debug on in the VM sections. Could you please let me know exactly which of debug selection botoms should be on and which bottom I should press to do a debug?
  
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Re: Debug window do not pop up
Reply #5 - Jul 16th, 2024 at 8:11pm
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The Debugging is best started with the VS Debug > Start Debugging or Debug > Attach to process (when using Hardware Debugging as you are).

Once the debugging session is started the green Continue, and Red stop buttons of VS are best used, along with it's Step Over/Into/Out buttons.

Once the debugging session is started, all of the VS Windows for Watch/CallStack/Autos etc.. are available from the VS Debug > Windows menu, and the layout of these and which are open is remembered by VS in the background.

Does that help?
  
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Re: Debug window do not pop up
Reply #6 - Jul 16th, 2024 at 9:08pm
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I still cannot run the debug. I get a screen as shown in the attached file.
  
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Re: Debug window do not pop up
Reply #7 - Jul 17th, 2024 at 8:18am
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Thanks for the update, image files are best attached directly so they show in the forum thread more easily.

If you press [Continue] after the "Frame Not In Module" screen does it then progress to recognisable code?
  
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Re: Debug window do not pop up
Reply #8 - Jul 17th, 2024 at 3:14pm
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If I press the continue bottom again it will do the same.
  
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Re: Debug window do not pop up
Reply #9 - Jul 17th, 2024 at 3:26pm
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Thanks for confirming.

Also is this the same with a breakpoint set in loop() and using Debug > Attach to Process?

(I only ask as sometimes there is a timing issue where the debugger connects too early to the CPU as it is rebooting with Debug > Start)
  
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Re: Debug window do not pop up
Reply #10 - Jul 17th, 2024 at 3:50pm
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I do not use attach to process. I assume when I press green start bottom the debug is automatically attached. If I press attach to process afterward it opens another window see attached.
  
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Re: Debug window do not pop up
Reply #11 - Jul 18th, 2024 at 10:27am
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The Start button will perform the compile, upload and attach the debugger as soon as possible.

The Debug > Attach to Process just attaches the debugger.

If you build and upload the code using the vMicro > Build and Upload button, then use Debug > Attach to Process (without pressing the Start button), this will show if there is any issue with the timing of the debugger attaching.

  
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Re: Debug window do not pop up
Reply #12 - Jul 18th, 2024 at 4:18pm
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I still get the same issue.
  
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Re: Debug window do not pop up
Reply #13 - Jul 19th, 2024 at 3:03pm
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Do you get the same problem with a simple Blink Sketch?

From some further reading, there should be no breakpoints set when the debug session is started, else it can get stuck in the USB code.

Does having no breakpoints set change anything? (then set them once the session has started and the red stop button is shown)

It may also require the bootloader to be removed from the board and the linker script changing, however this is best left as the last option.
https://forums.adafruit.com/viewtopic.php?p=808049
  
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