ST-Link/V2 SWD-JTAG adapter

Posted on Wednesday, August 20th, 2014 in how-to, JTAG by DP


alexwhittemore  has posted a detailed tutorial how to make an adapter:  ST-Link/V2 SWD-JTAG adapter 

The fantastic STM32 Discovery boards from ST Micro all come with an embedded ST-Link/V2 debugger onboard, including some jumpers to disconnect it from the target device for use as a standalone SWD debugger. Presumably, this is to allow for easy use debugging a custom end-product PCB, but it’s also useful if you have any other STM32 evaluation boards hanging around with no built-in debugger, but don’t happen to have a proper JTAG dongle handy. Here’s how to make an adapter.
It happens to be the case that I’ve got an STM3210E-Eval board I need to work on, but no compatible JTAG debugger handy. I do have a ton of Discovery boards, so now I just need an adapter to use the Serial Wire Debug capabilities on the STM3210E from my Discovery board.


This entry was posted on Wednesday, August 20th, 2014 at 10:46 pm and is filed under how-to, JTAG. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “ST-Link/V2 SWD-JTAG adapter”

  1. Tom Moxon says:

    I made the layouts available for a several small PCB’s to do just this.
    You can download the OSHW gerbers for free and order your own from

    the design files for the 20 pin version are here :

    and the tiny, postage stamp, sized 10 pin version is here :

    best regards,

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