what it the pin number of ST-Link V2? st link was damaged?

[Yshep]

i connected st link to my stm32 on customboard ,

1 pin -> 3.3V, 7 pin -> SWDIO, 9 pin -> SWCLK, 15 pin-> NRST, 19 pin -> GND.

but keil doesn't recognize mcu.

I attach the image of the connection .

st link was damaged or wrong pin configuration?

thank you. i want to resolve this issue.

Thank you in advance

[S.Ma]

You don t need rst.

3.3v is adc monitoring input for stlink, not a supply to the target .micro.

Did you check pin1 of stm32 on your board? Which stm32?

[Yshep]

Thank you for your reply, Yes, the pin1 of stm32 is 3.3V.

this board has power supply from batteries on bottom side.

I will attach schematic.

[Tesla DeLorean]

Strikes me that you have the pin orientation completely backward.

[Yshep]

I measured the voltage of pins. it appears vcc is 3.28 v. so i think i connected correctly.

[Tesla DeLorean]

Ok then perhaps you can enumerate your colour scheme, because the RED wire in the ribbon cable is PIN1, and the connector is a mirror image of the pins in the ST-LINK header it plugs into.​

[Yshep]

Yes, pin1 of cable is connected to pin of custom board.

[Tesla DeLorean]

Perhaps a diagram might help penetrate your cranium?

[Yshep]

yes, thank you for your help . it seems it works now.

I see " Target has been cancelled "