I have six G400 Development Boards (with built-in display) and was hoping to switch to the UCM Development board, lower cost and we don’t need the display.
For the G400 Development Board
Turns out that the Mode signal on PA25 was on a header so simple to put a toggle switch on, see early post with pictures if interested.
For the UCM Development Board
Now on the UCM development board, the Mode signal is on BOOT.D signal which is connected to a push button. This makes it ackward to leave the mode set to COM port debugging mode, when the system resets un-attended or out of reach of the computer user that is preforming tests.
We kind of got use to the cross shape layout of the five pushbuttons, to run what we call “Standalone” menu without the computer attached for long term testing.