Two Different STLink Debugger on One PC to Debug Two Different System

[Kasapoglu.Orkun]

Posted on March 31, 2017 at 15:55

Hi all.

I want to know, can I use two different SLink-v2 (SWD) debugger to debug separate STM-ARM based system? I have STLink v2 debugger and discovery boards (which can be used as a debugger). I've designed a board which has two MCU and they need to talk with together and do something after that. So I need to debug them in the same time.

[Tesla DeLorean]

Posted on March 31, 2017 at 20:14

Consider also VirtualBox

[Kasapoglu.Orkun]

Posted on April 03, 2017 at 17:36

Thanks

Turvey.Clive.002

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[Thomas Legrand]

Posted on April 03, 2017 at 18:25

Hello,

I've never tried it but isn't JTAG supposed to be a daisy chain ? That would means you can put multiple MCUs on the same JTAG port (does the ST-Link support it ?).

I guess your debugging software would need to support it too (I'm using SEGGER probes and Atollic Pro, I'm pretty confident they both support it).

Thomas.

[AvaTar]

Posted on April 04, 2017 at 08:46

I've never tried it but isn't JTAG supposed to be a daisy chain ? That would means you can put multiple MCUs on the same JTAG port (does the ST-Link support it ?).

The ST-Link on Nucleo/Discovery board support only SWD, not JTAG.

[Tesla DeLorean]

Posted on April 04, 2017 at 17:15

>>

The ST-Link on Nucleo/Discovery board support only SWD, not JTAG

Correct

They should however have different serial numbers permitting a solution with appropriate drivers and DLLs to support multiple ST-LINK attached to *different* SWD ports.

We use full JTAG, not least because it permits boundary scan and daisy-chaining of all devices on the boards.

The multi-chip situation is not a battle I've fought at this level. Better to understand what your code is doing than rely on single-stepping it to find out. Better to instrument systems so interaction can be determined in real time, many situations where stopping one/both chips can have catastrophic effects.

[Max]

Posted on April 05, 2017 at 10:01

I have tried IAR and Keil, both can discriminate between several STLink connected on the same PC by using their serial number.

You can run 2 project debugger windows at the same time.

BR,

Max

[Kasapoglu.Orkun]

Posted on April 05, 2017 at 13:44

My new STM32F4-Discovery kit has arrived and I tried it too with Keil and it is possible with selecting the ST-Link/V2-1 (not the in-use one) from the Flash/Configure Flash Tools/Debug/Settings and again under the Debug/Debug Adapter's Unit section. Thanks for your kind helps.