I have a Nucleo L053R8 card. I want to run a different card using the top part of this (section CN4) but I cannot provide 3.3 voltage via vdd_target. So I tried to use the 3.3 pin in the JP1 section, but my code cannot be transferred to my other card

[CEjda.1]

[CEjda.1]

i only use the top of this l053r8 card and what is the reason for this and how can I get 3.3 through vdd target.

[Tesla DeLorean]

The ST-LINK here will be powered via USB, there aren't any buffers, so you don't need VTarget, only a common ground.​

[CEjda.1]

i want to run a different card using the swd part st-lik. i want to get the power of this card through vdd_target. Part of CN4 Also, there is no entry on my other card.

[Tesla DeLorean]

You want to to power YOUR card via the USB source?

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C​heck circuit diagram, and JP15 ?? jumper pads.