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NUCLEO-G071RB catch 22 - PA14 set to GPIO input

pdornier1
Visitor

‎2025-11-06 2:58 AM - last edited on ‎2025-11-06 3:08 AM by

I flashed firmware that sets. Now STM32Cubeprogrammer refuses to connect to the STLINK portion.

How to recover from this / debrick the boards ? I tried pulling up PA14 / boot0 pin with a pull-up to CN7 pin 7, but no such luck...

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2 REPLIES 2
Andrew Neil
Super User

‎2025-11-06 3:07 AM

Having the ST-Link connect under hardware reset should do it.

 

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
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pdornier1
Visitor
In response to Andrew Neil

‎2025-11-06 3:48 AM

Nope...

12:42:17 : UR connection mode is defined with the HWrst reset mode
12:42:22 : UR connection mode is defined with the HWrst reset mode
12:42:22 : ST-LINK error (DEV_USB_COMM_ERR)
12:42:22 : Error: Problem occured while trying to connect

Serial console through STLINK _is_ working, and shows my startup message, so the USB connection is good.

pdornier1_0-1762429700364.png

 

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