How to connect ST-Link/V2

Forum|Forum|9 years ago
July 2, 2017
20 replies
7230 views

Posted on July 02, 2017 at 10:59

Thank you for your patronage.

I'm Japanese.

I connected ST-Link / V2 as shown below.

However, an error was displayed as shown in the figure below. I translate this into English.

�Fatal error : ST-Link: Failed to identify the target MCU. Please check the selected hardware and interface. Session aborted.''

#st-link/v2

ST-Link

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Bogdan Golab

Lead

Posted on July 02, 2017 at 11:26

1. The nucleo board has build-in ST-LINK v2-1. Have you tried it?

2. According to the nucleo manual CN2 jumper connects the build-in ST-LINK to the target MCU.

HAve you removed CN2 to avoid interaction of the external ST-LINK with build-in ST-LINK?

Ken InoueAuthor

Associate III

Posted on July 02, 2017 at 12:06

Thank you for your reply.

1. Yes. I tried. I want to use an external ST-Link because I am going to make a new circuit. The new circuit does not have In-circuit debugger. So I want to debug Nucleo as an exercise with an external ST-Link.

2.Yes. I removed CN2 jumper connects. But the same error appeared.

Bogdan Golab

Lead

Posted on July 02, 2017 at 12:12

Ad 1. I am not able to conclude: does the original build-in ST-LINK work fine?

3. Is the ST-LINK firmware up to date? Have you compared the build-in ST-LINK firmware version with the external one? Just run ST-LINK utility to see the firmware version.

4. I assume that the hw connections are correct (at least I believe that you have verified them).

Ken InoueAuthor

Associate III

Posted on July 02, 2017 at 15:18

I'm very happy to reply because I am in great trouble.

1. Yes. T

he original build-in ST-LINK work fine.

3. I upgrade ST-Link.

But the same error appeared.

The photo above is Nucleo ST-Link version

The photo above is External ST-Link version.

4. Thank you very much.

tome

Associate II

Posted on July 02, 2017 at 14:23

Also you need to power your Nucleo board from external power source. Original ST-LINK programmer don't have a power on the VAPP pin. It's why I using Chinise ST-LINK programmers, it's smaller, has +5V and +3.3V pins , look like a USB-Flash and tha main things it's cost about $2USD.