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How to program NUCLEO-H753ZI Board 2 using Board 1's ST-Link via CN5? Which jumpers to remove?

Vasanth_L
Visitor

Hello ST Community,

I have two NUCLEO-H753ZI boards and I want to use Board 1's on-board ST-Link
to program Board 2's MCU through the CN5 (MIPI-10) connector.

My Setup:
- Board 1 (Programmer): Connected to PC via USB, will provide ST-Link
- Board 2 (Target): Connected via 10-pin ribbon cable to Board 1's CN5
- Both boards are NUCLEO-H753ZI (MB1549 or MB1940)

My Questions:

1. Which jumpers need to be removed on Board 2 to disconnect its on-board
ST-Link from the target MCU?
- I see several connectors with jumpers in the ST-Link section (CN2, JP4, JP5, etc.)
- Which specific jumpers control the SWD connection (SWDIO/SWCLK)?

2. Should jumpers remain installed on Board 1 (the programmer board)?

3. What is the correct CN5 pinout for the MIPI-10 connector on NUCLEO-H753ZI?
- I want to verify my ribbon cable connections are correct

4. For power, should I:
- Power Board 2 through CN5 Pin 3 (VCC) from Board 1?
- Or use separate USB power for Board 2?

5. In STM32CubeIDE, I'm getting "Multiple ST-LINKs detected" error.
How do I configure it to use only Board 1's ST-Link?

What I've Tried:
- Connected both boards via 10-pin ribbon cable on CN5
- Attempted to remove jumpers but unsure which ones are correct
- Getting intermittent connection errors

Any guidance on the correct jumper configuration and connection procedure
would be greatly appreciated!

Thank you!

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