Error in initializing ST-LINK device. Reason: No device found on target

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Hello i encountered this error on F072 nucleo board, it was working fine yesterday and todayit couldnt connect up to STM IDE, whats coursing this and how to overcome this issue?

STM32F0 series

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Andrew Neil

Super User

@StanCosgrove wrote:
it was working fine yesterday and today it couldn't connect

What did you change between yesterday & today - hardware and/or software ?

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.

S

StanCosgroveAuthor

Associate III

Nothing...full error as below, anyone can help?

Error in final launch sequence:

Failed to start GDB server
Failed to start GDB server
Error in initializing ST-LINK device.
Reason: (4) No device found on target.

Andrew Neil

Super User

Nothing at all - no changes to your code? No links fallen off?

Does the ST-Link appear in the Windows Device Manager (or equivalent on other platforms) ?

Does any of this help: https://community.st.com/t5/stm32-mcus/how-to-solve-debugger-connection-issues/ta-p/49693 ?

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.

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