I have a "NUCLEO-H723ZG" dev board. My current configuration is to power the dev board by 3V3 (CN8 pin 7 or CN11 pin 16), with all jumpers from the "PWR JP2" removed, as according to section "6.4.5 External power supply input from 3V3_EXT (3.3 V)" of the "UM2407 STM32H7 Nucleo-144 boards (MB1364)" document.
In that section it says:
"When the 3.3 V is provided by a shield board, it is worthy to use the 3V3 (CN8 pin 7 or CN11 pin 16) directly as power input (refer to Table 9 and Figure 4). In this case, programming and debugging features are not available, since the STLINK-V3E is not powered."
Is there any way at all to safely program / debug / access the virtual COM port routed though the USB connector when the Nucleo is simultaneously powered by 3V3 (CN8 pin 7 or CN11 pin 16)? In other words, is it safe to have the USB cable attached at the same time as the board is receiving 3V3 power as well?
There is a section "6.4.6 Debugging while using VIN or EXT as an external power supply", but it does not apply as I am not using "VIN" or "EXT". In that section, there is a sequence of 5 steps if you want to debug / program while "VIN" or "EXT" is used.
