I'm finally able to get Trace using just 2 data pins working reliably on a Silicon Labs EFR32ZG23 ARM CM33 processor. The reason I want to use only 2 bits is Silabs uses a 10-pin (MiniSimplicity) header for programming/debug and there are sufficient pins on it for only 2 bits of trace. The trick was to set the ITM_TCR.STALLENA PROGRAMMATICALLY. However, I would much rather set it in the .JLinkScript file but for whatever reason, when I set STALLENA=1 in the script it does not appear to "stick". …