Why is lwip sdk example not single-stepping?

[m4l490n]

I'm trying to single step in a debug session with the frdmk64f_lwip_mqtt_freertos SDK example project but it is not possible. I start the debug session and if I click Resume (F8) button the application runs just fine, I can see the application output in the terminal just fine. But if instead of running I click the Step Over (F6) or Step Into (F5), then the debugger doesn't do anything.

When pressing Step Over (F6), the Resume and Suspend icons gray out as if it was running but it just gets stuck, nothing happens. I have to end the debug session to get it out of this non-responsive state.

I just imported the example, compiled it, and started the debug session. I didn't configure anything.

I don't know what is going on.

I'm using MCUXpresso IDE v11.1.1 [Build 3241] [2020-03-02]

[kerryzhou]

Will use the on board JLINK to test it. My colleague Da Li will help you!

[kerryzhou]

Hi Manuel Malagon,

    Sorry, it's my fault.

    Due to the Covid-19's impact, we are working at home, I still don't have the FRDM-K64 board on my side.

   But don't worry, I will ask help from my colleague who has the FRDM-K64 board, after the test, I will let you know.

   Please keep patient, thanks a lot for your understanding.

Have a great day,
Kerry

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[m4l490n]

kerryzhou‌ Thanks for helping.

It's ok, also, maybe it doesn't have to be the FRDM-K64F, what's important is that you, or your colleague, test using a SEGGER JLink debugger, whether the one in the board or an external one, it's the same.

Thanks for helping, I appreciate it.

[nxf56274]

Hi,

I use the IDE 11.1.0 and Jlink. My sdk is 2.7.0.  I can step into and step over the code normally. I can also step over the breakpoint you mentioned. Make sure your hardware connection is correct

Have a great day,
TIC

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[m4l490n]

Now I'm using the IDE 11.1.0 and still nothing. Are you using the onboard JLink or an external debug probe? What's your version of JLink? Mine is 6.54C.

Could you please test with the attached SDK?

There is definitely something wrong with my setup or version of a tool, I even suspect the options in my SDK at this point.

[nxf56274]

Hi,

I use your attachment to test. All of the things are normal. You can try the other IDE(MKD or IAR).

Have a great day,
TIC

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[kerryzhou]

Hi Manuel Malagon，

   Do you try to add the breakpoint, whether it works and stop or not?

   Do you try any other SDK simple project, eg, helloworld, ledblinky, whether the single step works or not?

   You can also add some screen shoots to demonstrate your issues.

   Could you please try the breakpoint instead of the F6 F5, and check another SDK project, just check it is related to the project or the IDE.

Kerry

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[m4l490n]

kerryzhou‌ Thanks for helping.

I have added the blinky and hello_world and both debug perfectly fine. I mean, I can single-step through the code.

If I set a breakpoint and hit Resume (F8) the code runs up to the breakpoint, but it runs slower than it should. Also, the "Variables" window doesn't populate.

If I put a breakpoint on line 407 and hit Resume (F8), then the code doesn't respond anymore and gets stuck as if running but it never gets out of line 405.

To gain control again I have to click the Terminate ALL Debug Sessions instead of just the Terminate button as I would normally do (with blinky and hello_world for example).

It seems that the breakpoint technique only works once but then the code goes unresponsive when trying to resume execution.

[kerryzhou]

Hi Manuel Malagon,

   This is my test result on my MIMXRT1064-EVK board

You can find my breakpoints works OK.

You can use the Expression window to check the variable data.

My SDK version is 2.7.0

But My IDE version is MCUXpresso IDE v11.1.0 [Build 3209] [2019-12-12]

Have a great day,
Kerry

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[m4l490n]

kerryzhou‌

You really need to test with Segger JLINK. I just tested with an ARM ULINK2 probe, inspired by your screenshots, and debugging works perfectly fine, same project, the same tool, same configurations, same everything. The problem is with SEGGER JLink debugger.

I'm using a JLink Base so I don't think it is a restriction that could possibly be found in an EDU version.

[m4l490n]

kerryzhou‌

Could you please try with the FRDM-K64F board, a SEGGER JLink Probe, and the frdmk64f_lwip_mqtt_freertos example? I see that you are trying to reproduce on totally different conditions. That could make a difference.

I tried with the MCUXpresso IDE v11.1.0 [Build 3209] [2019-12-12] and it's doing the same.