How to use a STM32G071B-DISCO Kit in SPY mode.

[YKMIN]

I have a STM32G071B-DISCO Kit. This device have a two USB C port. One is plug type and receptacle type. I'd like know how to use spy mode between SRC and SINK. I did connect this to SRC device and SINK device and connect micro-b port to STM32CubeMonitorUCPD.

But STM32CubeMonitorUCPD does not recognize the VCOM port.

[Richard.Chvr]

H @YKMIN​ i,

We suspect an issue around STLink Driver. We recommend you to install the latest STLink Drivers that you will find here : https://www.st.com/en/development-tools/stsw-link009.html

Please let me know if issue is corrected after driver installation

Thanks

[YKMIN]

Dear Richard Chvr

The result is same.

STM32CubeMonitor does not detect COM port but Device Manager is detect COM port in Control Panel of PC.

I installed that driver and reboot my PC.

LCD of STM32G071B-DISCO Kit just display Voltage and Current.

[Nicolas P. · Accepted solution]

Hello @YKMIN​ 

The behavior you describe is normal. You are in spy mode : the board will not be detected in the main panel, but you can still use the trace for debugging.

It is described in the user manual, page 22 (chapter 5.2.4)

Have a look at our wiki.

See also link.