Using ARM-DS to capture ITM traces

Hi

My name is Stephen and I work at Arm.

Yes, Arm DS and DSTREAM-family debug units can be used to capture ITM data from a target and display it in the Events view:

see developer.arm.com/.../Events-view

but Arm DS has no equivalent to the Serial Wire Viewer or Trace Records view as found in Keil MDK uVision.

There is an example (named "ITM_Cortex-M4_MPS2") provided with the Arm DS examples that illustrates this.

Depending on your target board and type of DSTREAM unit (e.g. -ST or -PT), there may be a ready-made debug configuration available that offers a variety of TPIU port widths.  This is selected from the "DTSL Options" button.

For example, this screenshot is for the Cortex-M33 SSE-200 platform:

To compare DSTREAM Editions, see https://developer.arm.com/Tools%20and%20Software/DSTREAM-ST?#Editions

Hope this helps,

Stephen

Hi

My name is Stephen and I work at Arm.

Yes, Arm DS and DSTREAM-family debug units can be used to capture ITM data from a target and display it in the Events view:

see developer.arm.com/.../Events-view

but Arm DS has no equivalent to the Serial Wire Viewer or Trace Records view as found in Keil MDK uVision.

There is an example (named "ITM_Cortex-M4_MPS2") provided with the Arm DS examples that illustrates this.

Depending on your target board and type of DSTREAM unit (e.g. -ST or -PT), there may be a ready-made debug configuration available that offers a variety of TPIU port widths.  This is selected from the "DTSL Options" button.

For example, this screenshot is for the Cortex-M33 SSE-200 platform:

To compare DSTREAM Editions, see https://developer.arm.com/Tools%20and%20Software/DSTREAM-ST?#Editions

Hope this helps,

Stephen

Thank you Stephen. I assume going by this webpage that the IDE and probes cannot be mix and matched? In other words, we cant use Keil MDK (uVision IDE) with DStream Probes:

https://developer.arm.com/Tools%20and%20Software/Keil%20MDK

Is that correct?

Hi Sarah, 

Keil MDK cannot be used with DSTREAM, though Arm Development Studio does support the uLink probes.

thank you

Hi Stephen,follow up to this question, once i have exported both event and dstl confg is there a way i want put that into armdbg command? I am trying to automate this process with a python script that calls the command. Rather than having to use the gui.

Do you just need the 'trace report' command?

https://developer.arm.com/documentation/101471/2023-1/Arm-Debugger-commands/Arm-Debugger-commands-listed-in-alphabetical-order/trace-report

Hi Stephen,

Thank you for your helpful answer.

I am trying to find a way to capture trace data with Ulinkpro in armds, but I'm having no luck. It looks like capturing any trace data in Arm Developement Studio using Ulinkpro is only possible with the targets implementing ETB. Is this a correct assumption?

Regards

Amir

You are correct. You can only use Keil MDK with UlinkPro for off-chip trace.

https://developer.arm.com/Tools%20and%20Software/ULINKpro

Hi Stephen,
I am still not clear on your statement: Arm DS has no equivalent to the Serial Wire Viewer or Trace Records view,  but ARM DS can use Event View to display trace packets from ITM?
Also I have a Coxtex-M33, connected with DStream, via SWD, and CSITM goes to SWO,  in ARM DS 2023.0 Event Viewer Settings, it complains "Trace source or Device is invalid" with following config:

What could be wrong?

Thanks

Xiaoming

Hi

Sorry, but SWO is not supported by Arm DS or DSTREAM.

To use SWO, you will need to use the Keil MDK and one of the uLink-family probes instead.

See:

https://www.keil.com/

https://developer.arm.com/documentation/101407/0541/Debugging/Code-and-Data-Trace--Cortex-M-/Trace-Features

https://learn.arm.com/learning-paths/microcontrollers/uv_debug/4_swv/

https://www.keil.com/download/files/swv_on_cortex-m3.pdf

https://community.arm.com/support-forums/f/keil-forum

Hope this helps

Stephen