STM32 MCUs Boards and hardware tools

Ask questions and find answers on STM32 hardware set-ups, including schematic-related challenges, debugging probes, power configurations, and more.

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Resolved! STM32h753x - JTAG interface

We are planning to use STM32H753X in one of our design. For JTAG interface I can see two options 5 pin and 4 pin JTAG. Is STM32H753 supports 4 pin JTAG? If yes, how to manage NJTRST pin? Shall i connected NJTRST pin to NJRST?  what is the use of 5 pi...

DJ_IND by Associate II
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  • 1 replies
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SPI signal distorted at high speed

Two STM32H743 series MCUs are on a single board and they communicate using SPI. When SPI clock frequency is more than 1.5 Mhz, SPI communication is not working properly. The distorted clock signal waveforms at high frequencies are attached below.A 51...

JCAeron_0-1740118503461.png TEK00000-20250203-201636.PNG TEK00009-20250212-171326.PNG TEK00001-20250203-203652.PNG
Jonah9Veh by Associate III
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  • 9 replies
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Resolved! [RESOLVED] VCP on ST-LINK v3 mini

I cannot get the VCP function of ST-LINK v3 mini working.Windows sees the com port and can open itConnected TX output of UART to pin 14 of ST-LINK 3 mini, but nothing is received on the PC side.Connected some other serial TTL-USB adapter (set to 3.3V...

Pavel A. by Super User
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