Everything worked — ONCE —
my design has ~13 PIO’s of various sizes which control & monitor various fpga functions
i have compiled via the EmbeddedLinuxBeginnerSGuide a zillion times … and am familiar with the process … written snippets of testing in C, have ncurses working, etc …etc …
except for ONE brief day nothing has worked …
& under investigation ->
all my pio inputs are functional (switches / button presses)
(set as input only)
but none of my outputs register / save the outputs (set as output only)
even setting ‘reset values’ are not produced …
(I.E. the LEDs don’t light )
(also a altera timer does not reflect any write as well)
I’m sure it is something so obvious that i can’t see it …
any clues would be appreciated …