STM32CubeIDE-- how to use SWV data trace timeline graph

[J.Park]

Hello, now I'm using F429IDiscovey and STM32CubeIDE to grahp via SWV.

I refre to this official video(URL: https://www.youtube.com/watch?v=eumKLXNlM0U)

In the STM32CubeIDE, I configured same like video.

(Please see the attached file named 'SWV_Config' and 'Debug Config')

After configuration, I can run debug mode normally.

Also I can check variable(LED_state) that get value 1 and 0 per 500ms as I coded.

But I cannot any graph on the SWV Data Trace Timeline Graph...

(Please see the attached file named 'LED_State=0' and 'LED_State=1')

Do I miss something? How can I fix?

Thank you in advance

[Markus GIRDLAND]

Is the variable "LED_State" a global variable?

Do you get any SWV data in any other view?

[J.Park]

Yes, LED_State is a global variable.

But I can not see any data in SWV graph..... :(

[NBinh]

Yes, I have the same problem when used SWV graph. Have anybody solve this problem?

[J.Park]

No, I haven't...:(

If I solve this problem, I will commet.

If you solve this problem, please let me know.

[NBinh]

Of course. I'm still trying

[xpress_embedo]

Hello All,

I am new to this forum and wanted to start with ST devices and that's why I purchased STM32F769 Discovery Board.

I started from the basics, and as a first task I tried to blink the on-boards LED's, which works fine.

But when I tried to use the SWV Trace Timeline feature to plot the graph, it's not working.

I watched the official video and based on that I tried to perform these steps.

https://www.youtube.com/watch?v=eumKLXNlM0U

I configured everything as per the video.

In Debug Configuration --> SWV is Enabled, Live Configuration is also Enabled.

Apart from this, I don't see anything in SWV Trace Logs, and SWV Data Trace.

I am attaching the compressed zip folder of my project.

Thanks in advance for your help.

[TMaia.1]

I'm facing the same issue. Does anyone got it working?

[Daniel Lin]

I am using STM32CubeIDE and a Nucleo-68 board from the Nucleo pack (P-NUCLEO-WB55) with the same problem. I can see the variable is changing but nothing can be seen on the SWV Data Trace Timeline Graph. Do I have to use a jumper or solder bridge etc. to take care of SWO?

[Daniel Lin]

I have root caused the reason: My variable is only updated in the while 1 loop but not read by the software at all. If I set Access as "Read", then no waveform is shown because the variable is never read. Once I change the access to "Read/Write" or "Write", I am able to see the graph because the data trace is triggered with each write.

[TMaia.1]

Check if your jumpers are in the correct spot.

[Daniel Lin]

Thank you for your suggestion. I have root caused the reason: I did not setup the variable correctly. My variable is updated in the while 1 loop but not read by the software. If I set Access as "Read", then no waveform is shown. Once I change the access to Read/Write or Write, I am able to see the graph

[MMult.1]

Have you set correct HCLK frequency in Run Configuration -> Debugger -> SWV (Enable)-> Core Clock? On YouTube examples show 80MHz but your board may have different default set - for example 216MHz. Check it in *.ioc -> Clock Configuration -> HCLK (MHz)

[TKleg.2]

In my case the debugging settings are grayed out. Does somebody know what this means? And the SWV Data Trace cannot be configured, no window opens. Thank you for any suggestions. I am using a J-Link debugging probe and I have the Version:

Version: 1.10.0

Build: 12671_20220627_1643 (UTC)

with: stm32g071CBUx

[TKleg.2]

Just as an information: I found out that this G0-MCU does not support SWV.

[DMolo]

December 2022, and this really does not work, following the exact instructions, with a genuine stlink v3, or a segger jlink, with CubeIDE, and any of F303CB, F405RG or L431RC.

The graph. simply does not respond, and on the odd occasion where it does, the data is garbage - reports values like 4500000000000000000000000000 on a float that the live expressions viewer sees is about 0.0234234 (a current reading in A).

Would be really useful to have a plotter of some sort. Doesn't sound like it should be very complicated...

[DMolo]

Here is an example. 

 

I think at this stage I must have tried every single option box and combination there is.

[AScha.3]

you have "core clk" at 8 MHz -- but isnt it more 80 or 100 MHz ?

+

btw

i just tried my new stlink V3 (mods) , but this actual shows no swv data.

my old stklink V2 (clone :) ) working fine (almost - sometimes overflow exception logged)