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ST Link V3 mini with CN4 Force Reset

pelt0s
Associate

Hello
I am currently working with the ST LINK V3 mini. Unfortunately, the programmer occasionally loses the USB connection and goes into error mode. Only the red LED is still lit on the ST Link V3 mini. I can then no longer establish a connection with the STM32CubeProgrammer V2.15.0. I have to disconnect the USB connection and reconnect the programmer to re-establish a connection.
I have found the Connector CN4 with the "force reset" function in the data sheet. When I trigger this, the programmer goes into DFU mode. Is there a way to reset the ST Link via USB so that a new connection is established or is it only possible to provide a switchable USB for this case.

12:54:14 : STM32CubeProgrammer API v2.15.0 | Windows-64Bits
12:54:52 : UR connection mode is defined with the HWrst reset mode
12:54:52 : ST-LINK SN : 0032004C3438510534313939
12:54:52 : ST-LINK FW : V3J13M4
12:54:52 : Board : STLINK-V3MINI

thanks for help

Translated with DeepL.com (free version)

2 REPLIES 2
AWEI.2
ST Employee

Hi

the on board reset can't re-establish connection, you need replug the cable to repower it for new connection.

EZHON.1
ST Employee

The Warm Reset for STLINK need to check the firmware programmed key in flash to decide Jump to USBLoader or frimware.