ST-Link Utility, Can not connect to target!

zrtn · ‎2024-03-19

16:19:16 : 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.
16:19:44 : No target connected

Hi this the error im facing when try to program using stlinkV2 on a custom board

Tried switching to powerdown mode also and also checked the connections of pcb

what could be the issue

SofLit · ‎2024-03-19

Hello,

First, ST-Link Utility tool is obsolete so please use STM32CubeProgrammer instead.

Second, check the power supply of your MCU.

Third: are you using one of low power modes in the program already loaded in the MCU?

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

View solution in original post

SofLit · ‎2024-03-19

Hello,

First, ST-Link Utility tool is obsolete so please use STM32CubeProgrammer instead.

Second, check the power supply of your MCU.

Third: are you using one of low power modes in the program already loaded in the MCU?

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.