STM32F100RBT6B development board

[saran]

I'm trying to redesign the STM32F100RBT6B without ST-LINK. something I did from the STM32VLDISCOVERY schematic file. but the redesigned hardware was not working with STM32 ST-LINKER UTILITY. For your reference, I have attached a schematic file 

showing the error:

16:19:07: Can not connect to Target!
Please select "Connect Under Reset" mode from Target->Settings menu and try again. If you're trying to connect to a low-frequency application, please select a lower SWD Frequency mode from Target->Settings menu.
16:29:02: No target connected

[Peter BENSCH]

Welcome @saran, to the community!

If you connect the board to an external ST-LINK, what kind of ST-LINK is it?

You have an 80 MHz crystal in the schematics at HSE. Do you realise that the STM32F100RBT6B can only work with max. 24MHz crystals?

Regards
/Peter

[saran]

Thanks for your response, sir.

In the schematic, I have wrongly mentioned as 80MHz. But in reality, I have using 8MHz in the circuit.

I have designed the board with reference to the STM32VLDISCOVERY board. For programming, I took the parallel connection from the Debugger of the STM32VLDISCOVERY board.

For your reference, I have given below the product link,

https://www.st.com/en/evaluation-tools/stm32vldiscovery.html 

Thanks in advance 

Regards,

Saran

[Peter BENSCH]

Then there are still two problems:

• the ST-LINK Utility has been on NRND for a very long time and is neither recommended nor supported anymore
• the VLDISCOVERY is already very old and still has the also very old ST-LINK/V1, which in turn is no longer supported by the STM32Cubeprogrammer

In addition, I don’t know how you connected your new board to this very old ST-LINK/V1.

Instead, I recommend that you get and use a more up-to-date ST-LINK, e.g. by breaking from any NUCLEO-64

Hope that helps?

Regards, /Peter