Andy Green wrote: > It's worth using the scope to confirm that the 1-bit mode was actually > used at all. > > Another trick that might be interesting then would be now D1 is "clean" > interrupt signal assuming the 1-bit thing worked, could be toggling a > GPIO somewhere in the ISR, and looking at that and D1 on the scope. > Assuming the D1 interrupts are happening at long intervals the > relationship of any spamming in the ISR to D1 might give a clue.
Yup, that's exactly what I have in mind for my scope :-) Already the first interrupt should actually give a clue. And the logic can be reversed as well: trigger on the ISR and see what happened in its vicinity. - Werner
