Can I use an Stlink of a Nucleo-mini board to program another ?

[Susano]

I have a Nucleo-l432kc board that I actually fried by accident touching one of the pins with my power supply probes while they shared the same ground during a risky test of mine 
anyway the problem now is I can't find a replacement at the moment in my region and a shipment of Aliexpress would take some time I have some  Blackpills and Clone stlinks lying around but using those clones have no mass storage or Virtual com port feature 
My Question is can I use the stlink on my fried board somehow ? I think the stlink circuitry itself is working fine since the mass storage and the openocd commands are working fine except that the cpu won't respond to uploading any code 

[Peter BENSCH · Accepted solution]

In principle, you could use an ST-LINK - however, this requires the separation of some tracks, because unlike NUCLEO-64, for example, there is no space for solder bridges. You would have to disconnect and connect with the external ST-LINK:

• TCK - SWCLK
• TMS - SWDIO
• SWO - T_SWO (if needed)
• SB9 (NRST)
• VCP_TX - STLK_RX
• VCP_RX - STLK_TX

In addition, you may have to put X1, C12, C13 and SB5/SB7 and to remove SB4 if you need a stable clock, as MCO from the built-in ST-LINK will probably also no longer work.

All in all, quite complex - but perhaps feasible. For more details, I recommend studying the schematics of this NUCLEO-32 (MB1180).

Good luck!
/Peter