Clone ST-LINK Error: No STM32 target found!

Forum|Forum|1 month ago
March 24, 2026
2 replies
358 views

Title edited to note that this is not a genuine ST-Link

11:19:26 : ST-LINK SN : 37FF71064E57343652791543
11:19:26 : ST-LINK FW : V2J46S7
11:19:26 : Board : --
11:19:26 : Voltage : 3.24V
11:19:26 : Error: Unable to get core ID
11:19:26 : Error: No STM32 target found! If your product embeds Debug Authentication, please perform a discovery using Debug Authentication

I am using a LoRa module E77-900M22S that has incorporated a STM32WLE5CCU6. Also i am using a ST-Link V2 mini connected to program the micro. I have connected SWDIO and SWCLK properly and the module has 3.24V so the problem its not the connections. I dont know why it doesnt detect the MCU.

STM32WL series

Best answer by Andrew Neil

Again, there is no guarantee that those will work properly (or at all) with ST's tools.

They are simply not supported.

You could try faffing around; you might get lucky - or you could just get a genuine ST-Link (or other genuine supported brand) and get on with your project ...

Andrew Neil

Super User

@AlexPCB wrote:
i am using a ST-Link V2 mini .

There is no such ST product as a V2 Mini - do you mean one of these ?

There is no guarantee that those will work properly (or at all) with ST's tools - see this.

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.

A

AlexPCBAuthor

Associate

I am using one of those actually. There is any problem with it or should I use an original one?

Andrew Neil

Super User

@AlexPCB wrote:
There is any problem with it

Again, there is no guarantee that those will work properly (or at all) with ST's tools - see this.

Note also that the pinouts do vary.

@AlexPCB wrote:
should I use an original one?

That would remove one area of doubt and uncertainty!

Just be sure to buy from an Authorised ST Distributor - not Amazon, ebay, Ali, or similar

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.

Andrew Neil

Super User

@AlexPCB wrote:
I am using a LoRa module E77-900M22S .

You mean this: https://www.cdebyte.com/products/E77-900M22S/2 ?

Have you checked with EBYTE for support: https://www.cdebyte.com/ContactUs ?

@AlexPCB wrote:
I have connected SWDIO and SWCLK properly and the module has 3.24V so the problem its not the connections.

Please show your schematic for people to confirm.

A good, clear photo could also help.

You haven't mentioned VTARGET, GND, or NRST ... ?

@AlexPCB wrote:
I dont know why it doesnt detect the MCU.

Maybe EBYTE have locked-out programming?

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.