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Visitor II
August 23, 2015
Question

Cannot connect to target!

  • August 23, 2015
  • 2 replies
  • 714 views
Posted on August 23, 2015 at 14:55

Hello,

First of all i am new to all of this programming.

I am using a St-Link/V2 Isol but everytime i want to connect to the target i get this message

Can not connect to target!

Please select ''Connect Under Reset'' mode from Target->Settings menu and try again.

If you're trying to connect to a low frequency application , please select a lower SWD Frequency mode from Target->Settings menu.

i have connected the board with 

Pin 19: VDD 3.3v

Pin 20:GND

Pin 9:TCK SWCLK

Pin 7: TMS SWIO

they also told me that the ST-Link should be visible as an mass storage on my computer, but it shows up as an usb dongle.

Thanks in advance 

#st-link-utility #no-target-connected
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    2 replies

    Graduate II
    August 23, 2015
    Posted on August 23, 2015 at 15:46

    Suggests the target is non-functional, no details of what it's attached too.

    Might want to get Pin 1 connected to the target's voltage.

    jorgentasAuthor
    Visitor II
    August 23, 2015
    Posted on August 23, 2015 at 17:04

    The target is an controller for an E-bike who needs to be reflashed.

    http://imgur.com/z1YwePe

    ________________

    Attachments :

    Foto_23-08-15_16_40_07.jpg : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HthQ&d=%2Fa%2F0X0000000aVt%2F0tT55uYgprffOVv8HXue0e4VHf.aC3Wv6WdlVZACqQ8&asPdf=false