STLINK_V3_SET not connect to STM32H745

[MDeva.1]

Hello,

I am working STM32H745 controller. I am trying to connect STLINK_V3 SET to my custom

board. But I getting the errors I am attaching the images ,I set the Debug as serial wire and device is in Connect Under Reset. What things I have to check, also I check the USB cable .Can you please help me.

[Aime]

Hi @MDeva.1​ ,

Thank you for sharing your request :).

I notice on the second image that your T_NRST is not connected, if you refer to the User Manual UM2448 Rev7 "Section 8.2.6 SWD Connector" these are the required pins for a SWD connection

Find in attached the document.

Best Regards,

A.MVE

[Tesla DeLorean]

Board and chip must be viable and correctl​y connected.

Show schematic section with STM32 pin/power connections.

Check orientation

Check voltage on VCAP and NRST​

[MDeva.1]

Hello,

We also connect the NRST pin but its shows the same result. When we make the BOOT0 high on power up and release that pin then it shows in in cubeprogrammer device is get detected then temporary coding is done .When we try after some time and try to code again shows the same error. Also when we try to programming in STM32CUBE IDE Cortex M7 programming is done and when we try to programming to cortex M4 is again shows GDB sesver error. I am sharing the schematic file and the images ,please check that, I stuck here , what things I have to check ?