2022-09-20 11:07 AM
I've gone over the hardware with a multimeter and all the pins have the right continuity, I've checked the design against the Nucleo-144 L552ZET6Q schematic and it checks out so far, and I've also checked the connections to the ST-LINK/V3 pins I'm using.
I haven't been able to program the MCU once yet via SWD or USB (I'm mostly sticking with SWD for now).
If anyone has any suggestions or thoughts, I'd appreciate any help I can get. If any additional information is needed from me, I'll do my best to provide
Solved! Go to Solution.
2022-09-26 09:49 AM
V15SMPS would expect 1V3 for RANGE2
The SWD 10-pin header looks correctly orientated
Stand-alone ST-LINK/V3 ?
2022-09-26 09:58 AM
Yeah, a ST-LINK/V3SET.
I did find one more difference. For the 32.768kHz crystal oscillator, I used a VMK3-9005-32K7680000 with 15pF caps. The NUCLEO uses a NX2012SA 32.768KHz with 3.9pF caps. I doubt that's the problem, but I'm running out of ideas
UPDATE: It's working! Looks like something was wrong with the chip itself (maybe ESD or other such damage). Put together a new board for comparison, and it worked wonderfully!
Thanks for all the help in figuring this out!