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Associate II
March 28, 2024
Question

Problem connecting ST LINK V3 MINIE

Hello everyone, Im last year student and this is my bachelors project. Im having problems connecting my ST link V3 minie. I will add my schematic below.

At first I tried conecting it and nothing happens. Just error message that says "Target not found" (Im using STM Cube programer). Then i tried using St-link v2 (that cheap clone) and in normal mode i was getting the same fault message. Then i tried Hot plug mode and for second im able to see registers and etc, but then i get error message that says "couldnt get core id" and then "conection with device is lost"or smth like this. Then i tried getting back on V3 minie and im still getting "Target not found". Maybe i should try connect nRst pin with pull up resistor and cap to ground? I cant think of anything else. I am thankful for all the answers

Ekrano kopija 2024-03-28 205646.png

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4 replies

AScha.3
Super User
March 28, 2024

nrst  - cap (100n) to gnd : is mandatory. PUT it there.

ST link V3 minie needs VDD 3,3v from target connected, otherwise no success. RTFM.

If no reset connection, connect with "software reset" setting.

+ have short wires and good ground connection, otherwise strayed in EMI, mains spikes etc will break the debug connection.

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zsxAuthor
Associate II
March 29, 2024

I tries adding cap and procide 3.3 V to stlink from the target, but i still get “no stm32 target found. If your product embeds debug authetication, please perform discovery using debug authentication”

AScha.3
Super User
March 29, 2024

Try: connect pin 23 to gnd....that will help the cpu to work. :)

AScha3_0-1711704739283.png

 

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