Exasperating problem arose after a a minor code change to a running development board - every time I started the debugger it immediately exits with the message " Encountered error (Target disconnected See output window for more information.)".
I've eventually tracked the issue down to this line of code in cyfitter_cfg() in cyfitter_cfg.c (after setting the debugger to not run to main). As soon as this code executes the debugger exits:
CYCONFIGCPY((void CYFAR *)(CYREG_PRT1_DM0), (const void CYFAR *)(BS_IOPINS0_1_VAL), 8u);
I could understand why changing the port configuration would break the debugger - what I haven't been able to locate is what values are being copied over (BS_IOPINS0_1_VAL points into flash ECC and I can't find anywhere where/how they are being set).
I've rebuilt the project multiple times, changed the debugger type from JTAG to SWD back and forth, tried a new minProg3 all to no avail.
When the issue started I had made a minor code change to the implementation code- nothing related to the system code and the fitter was not changed, so I'm at a loss why this would suddenly start.
Note the debugging option currently is set to "SWD+SWV" in the system configuration.
Clearly the chip thinks these pins are being used for GPIO but I can't find anyway to convince it otherwise, or even the setting that changes it.
Any help appreciated.
