About ST-LINK V3SET and STM32F103C8T6 clone development board .

[Ricky Gai]

Hi,

Anyone here successfully connected STM32F103C8T6 clone board using ST-LINK V3SET ?

QUESTIONS:

1. Here is the pins connection layout using CN2 JTAG:

+5V external ----> T_VCC pin 1

GND ---------------> GND pin 20

SWDIO ------------> T_SWDIO pin 7

SWCLK ------------> T_SWCLK pin 9

The actual connection is like below:

 

STM32CubeProgrammer already upgraded to latest ST-LINK V3SET firmware V3.J7.M2.B4.S1,

 

but I am unable establish connection to the STM32F103C8T6 board as shown picture below and the STM32CubeProgrammer CANNOT BE CLOSED:

 

I have reset by pressing the RESET button ( Software/Hardware reset options selected ) then followed by clicking the Connect button, the result still the same as shown above, any idea ?

My new ordered Nucleo F103RB board is on its way, but now I just wanted to test the STM32F103C8T6 clone board which is very common.

Please advise if there is any error connection above, I am new to ST-LINK V3SET.

2. The ST-LINK V3SET COM LED from the datasheet is stated Red color on power on, but sometime I notice it auto turned to Green color, is this normal ?

3. The ST-LINK V3SET cannot works if connected to a USB HUB, I have to isolate it to connect to a standalone USB port, what's the reason ? ( this is not practical as I have to unplug and plug in back manually and easily can damage the USB socket/connector in long run, the PC is far away from my workbench desk, I purposely need to use a long USB female socket cable and if with USB HUB, I can easily turn the switch ON/OFF ).

Thank you.

[Tesla DeLorean]

VTarget of 5V is clearly inappropriate, thing should be running at 3 or 3.3V

[Tesla DeLorean]

https://stm32-base.org/boards/STM32F103C8T6-Blue-Pill.html

There should be a 5V supply pin you can use on the board. Connect that up, and then the Pin 1 of the SWD header should be at 3V3, and you can use that as VTarget (Pin 1 JTAG)

[Ricky Gai]

Yes, I did tested it using a MC33269 3.3V Voltage regulator as picture shown below, the SWD interface of STM32F103C8T6 is 5V tolerance input which I have tested it using +5V from ST-LINK V2 before:

 

Seems.... my setup above, is using the output +3.3V from Voltage regulator to drive both STM32F103C8T6 and ST-LINK V3SET JTAG but still failed.

Please advise.

[Ricky Gai]

• The VTarget (pin 1 JTAG) based on datasheet is input voltage right ? I did connected the STM32F103C8T6 SWD 3.3V pin to T_VCC pin 1 JTAG and GND to pin 20 JTAG before, the STM32F103C8T6 cannot be powered up and result still the same.

 

• The +5V output pin of STM32F103C8T6 is none regulated, in fact I just used USB to powered the STM32F103C8T6 like picture below:

 

However, the result still the same unable to establish connection between STM32CubeProgrammer and the STM32F103C8T6 clone board and the STM32CubeProgrammer CANNOT BE CLOSED.

 

Please advise.

[Uwe Bonnes]

Bluepils often have STM32F103 clones. StlinkV3 denies active to work with those parts.

[Ricky Gai]

hi Uwe Bonnes, thank you for the feedback, I just received information from "S C ( ST Employee )", the support also said so, it could be clone STM32F103 is not supported by STLINK V3.

[Uwe Bonnes]

Stlinkv2 does not do that check when using SWD. Perhaps you have some disco or nucleo board and use them to attach,

[Ricky Gai]

yes, I agreed with you, only if the firmware of STLINK V3SET remove the checking routine, only then I believed, it can works on clone STM32 chips. Thanks again for sharing the information, much appreciated. 👍

[Ricky Gai]

by the way Uwe Bonnes, may I know is the ST original STLINK V2 does not do the checking of genuine STM32 MCUs as well ? or the same as STLINK V3SET ?