Error: Data read failed - when connecting to STM32F103C8BT6 Blue Pill

[chriskuku]

Title edited to flag that this relates to a Blue Pill

---

I'm trying to connect an STM32-STLink-V2 with three wires via SWD (GND, SCLK,SDIO). Was able to run a firmware upgrade, now V2J46S7.
Clicking on Connect gives:

15:35:11 : UR connection mode is defined with the HWrst reset mode
15:35:11 : ST-LINK SN  : XXXXXXXXXXXXXXXXXXXXXXXXXX
15:35:11 : ST-LINK FW  : V2J46S7
15:35:11 : Board       : --
15:35:11 : Voltage     : 3.02V
15:35:11 : SWD freq    : 4000 KHz
15:35:11 : Connect mode: Normal
15:35:11 : Reset mode  : Hardware reset
15:35:11 : Device ID   : 0x410
15:35:11 : Revision ID : Rev X
15:35:11 : Debug in Low Power mode is not supported for this device.
15:35:12 : UPLOADING OPTION BYTES DATA ...
15:35:12 :   Bank          : 0x00
15:35:12 :   Address       : 0x4002201c
15:35:12 :   Size          : 8 Bytes
15:35:12 :   Bank          : 0x01
15:35:12 :   Address       : 0x1ffff800
15:35:12 :   Size          : 16 Bytes
15:35:12 : UPLOADING ...
15:35:12 :   Size          : 1024 Bytes
15:35:12 :   Address       : 0x8000000
15:35:12 : Read progress:
15:35:13 : Error: Data read failed
15:37:13 : Disconnected from device.

What's wrong?

[TDK]

> What's wrong?

You probably have a counterfeit chip and/or programmer.

Programmer reports a voltage despite no VCC connected, so maybe you're using this?

Non-ST tools often don't work will with newer software.

[Andrew Neil]

You need to give more details about your setup - see:

How to write your question to maximize your chances to find a solution

As @TDK said, the STM32F103C8BT6 is widely cloned, and there are many fake ST-Links out there.

This was discussed at length recently in this thread 

And this thread

And this thread 

See also: How to recognize a genuine ST-LINK/V2 versus a cloned one.

[chriskuku]

I'm using this:

[TDK]

That one looks counterfeit as well, unless the markings have changed.

How to recognize a genuine ST-LINK/V2 versus a clo... - STMicroelectronics Community

Plus the board is likely counterfeit.

[Andrew Neil]

@chriskuku Note that you can put the image directly in the post - then we can see it:

That's a fake - see this post by @mƎALLEm 

You still haven't said what board you're using

[chriskuku]

Either of these - the newer one is a WeAct Studio

 

[chriskuku]

In the end it turned out that the bluepill I was using was faulty. Dropped in another one and things vanished into thin air.

[Andrew Neil]

So if your problem is now solved, please mark the solution on the post which provided the answer - not this one!

Note that Blue Pills are not ST products, and likely don't contain a genuine STM32.

Therefore ST tools may not (fully) support them - see this thread.

[chriskuku · Accepted solution]

It turned out far less complicated: the RDP bit was set. After unticking it using STM32CubeProgrammer, I was able to read the device.

08:58:28 : STM32CubeProgrammer API v2.20.0 | MacOS-64Bits
08:58:34 : UR connection mode is defined with the HWrst reset mode
08:58:35 : UR connection mode is defined with the HWrst reset mode
08:58:35 : ST-LINK SN  : 0A031612A218303030303032
08:58:35 : ST-LINK FW  : V2J46S7
08:58:35 : Board       : --
08:58:35 : Voltage     : 2.88V
08:58:35 : SWD freq    : 4000 KHz
08:58:35 : Connect mode: Normal
08:58:35 : Reset mode  : Hardware reset
08:58:35 : Device ID   : 0x410
08:58:35 : Revision ID : Rev X
08:58:35 : Debug in Low Power mode is not supported for this device.
08:58:37 : UPLOADING OPTION BYTES DATA ...
08:58:37 :   Bank          : 0x00
08:58:37 :   Address       : 0x4002201c
08:58:37 :   Size          : 8 Bytes
08:58:37 :   Bank          : 0x01
08:58:37 :   Address       : 0x1ffff800
08:58:37 :   Size          : 16 Bytes
08:58:37 : UPLOADING ...
08:58:37 :   Size          : 1024 Bytes
08:58:37 :   Address       : 0x8000000
08:58:37 : Read progress:
08:58:38 : Error: Data read failed
09:01:09 : Option byte command : -ob RDP=0xBB
09:01:09 : qCmd : -ob RDP=0xBB
09:01:09 : PROGRAMMING OPTION BYTES AREA ...
09:01:09 :   Bank          : 0x01
09:01:09 :   Address       : 0x1ffff800
09:01:09 :   Size          : 16 Bytes
09:01:10 : UPLOADING OPTION BYTES DATA ...
09:01:10 :   Bank          : 0x00
09:01:10 :   Address       : 0x4002201c
09:01:10 :   Size          : 8 Bytes
09:01:10 :   Bank          : 0x01
09:01:10 :   Address       : 0x1ffff800
09:01:10 :   Size          : 16 Bytes
09:01:11 : OPTION BYTE PROGRAMMING VERIFICATION:
09:01:11 : Option Bytes successfully programmed
09:01:11 : Time elapsed during option Bytes configuration: 00:00:01.341
09:01:39 : Disconnected from device.
09:01:41 : UR connection mode is defined with the HWrst reset mode
09:01:43 : UR connection mode is defined with the HWrst reset mode
09:01:43 : ST-LINK SN  : 0A031612A218303030303032
09:01:43 : ST-LINK FW  : V2J46S7
09:01:43 : Board       : --
09:01:43 : Voltage     : 2.91V
09:01:43 : SWD freq    : 4000 KHz
09:01:43 : Connect mode: Normal
09:01:43 : Reset mode  : Hardware reset
09:01:43 : Device ID   : 0x410
09:01:43 : Revision ID : Rev X
09:01:43 : Debug in Low Power mode is not supported for this device.
09:01:45 : UPLOADING OPTION BYTES DATA ...
09:01:45 :   Bank          : 0x00
09:01:45 :   Address       : 0x4002201c
09:01:45 :   Size          : 8 Bytes
09:01:45 :   Bank          : 0x01
09:01:45 :   Address       : 0x1ffff800
09:01:45 :   Size          : 16 Bytes
09:01:45 : UPLOADING ...
09:01:45 :   Size          : 1024 Bytes
09:01:45 :   Address       : 0x8000000
09:01:45 : Read progress:
09:01:46 : Error: Data read failed
09:01:58 : Option byte command : -ob RDP=0xA5
09:01:58 : qCmd : -ob RDP=0xA5
09:01:58 : PROGRAMMING OPTION BYTES AREA ...
09:01:58 :   Bank          : 0x01
09:01:58 :   Address       : 0x1ffff800
09:01:58 :   Size          : 16 Bytes
09:01:58 : UPLOADING OPTION BYTES DATA ...
09:01:58 :   Bank          : 0x00
09:01:58 :   Address       : 0x4002201c
09:01:58 :   Size          : 8 Bytes
09:01:59 :   Bank          : 0x01
09:01:59 :   Address       : 0x1ffff800
09:01:59 :   Size          : 16 Bytes
09:01:59 : OPTION BYTE PROGRAMMING VERIFICATION:
09:01:59 : Option Bytes successfully programmed
09:01:59 : Time elapsed during option Bytes configuration: 00:00:00.838
09:02:25 : Disconnected from device.
09:02:28 : UR connection mode is defined with the HWrst reset mode
09:02:29 : UR connection mode is defined with the HWrst reset mode
09:02:29 : ST-LINK SN  : 0A031612A218303030303032
09:02:29 : ST-LINK FW  : V2J46S7
09:02:29 : Board       : --
09:02:29 : Voltage     : 2.94V
09:02:29 : SWD freq    : 4000 KHz
09:02:29 : Connect mode: Normal
09:02:29 : Reset mode  : Hardware reset
09:02:29 : Device ID   : 0x410
09:02:29 : Revision ID : Rev X
09:02:29 : Debug in Low Power mode is not supported for this device.
09:02:30 : UPLOADING OPTION BYTES DATA ...
09:02:30 :   Bank          : 0x00
09:02:30 :   Address       : 0x4002201c
09:02:30 :   Size          : 8 Bytes
09:02:30 :   Bank          : 0x01
09:02:30 :   Address       : 0x1ffff800
09:02:30 :   Size          : 16 Bytes
09:02:30 : UPLOADING ...
09:02:30 :   Size          : 1024 Bytes
09:02:30 :   Address       : 0x8000000
09:02:30 : Read progress:
09:02:30 : Data read successfully
09:02:30 : Time elapsed during the read operation is: 00:00:00.310