I am starting a small coding project using my duet wifi and intended to connect a J-Link to the JTAG port of the duet wifi to do some debugging.
I'm using a Duet 2 Wifi v1.02
Looking through the schematic I found that the pullups for the JTAG lines are not populated on the production boards, and also that one of the JTAG pins is reassigned to do VSSA sensing.
My PCB and schematic knowledge is limited, do I need to make any changes to the board to be able to use a JTAG probe with it? I imagine I'll need those pullup resistors, but I'm also worried about the VSSA sensing bit (as I understand VSSA will be near ground level) and don't want to fry anything.
If you can spare the time, I'd appreciate some guidance.
edit: After doing some more digging I found that TCK(VSSA sensing pin) is also fine with a pull-down so my current state of knowledge is that I'll have to add the two pull-ups for TMS (R52)and TDI (R36) and MUST NOT ADD the pullup for TCK (R49) if I want to ensure stable JTAG operation, correct? Also, I imagine the SG_TST signal will interfere with TDO if I try to do stallguard stuff whilst JTAG debugging.