Error: Unable to get core ID

im using STM32H753VIT6 MCU.I'm try to connect device using SWD in STLINK debugger but it will show

"Error: Unable to get core ID" this Msg

im checked MCU input voltage,im getting 3.3v .input power is ok

now how can i debug this issue.

SWD pins properly connected Vcc,Swclk,Swdio,Gnd into stlink debugger but why im getting this msg,

kindly clarify

Technical Moderator

Hello @kesavans ,

Try "Connect Under Reset" using STM32CubeProgrammer. Then, full chip erase.

"When your question is answered, please close this topic by clicking ""Accept as Solution"".ThanksImen"

Super User

Hold BOOT0 high during reset to boot into the bootloader and then connect via SWD.

"If you feel a post has answered your question, please click ""Accept as Solution""."

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