You plug it all together, turn it on and… it’s not working. You have made N mistakes, where N>0.
1) Read datasheet, manual and internet
2) Try to understand d, m & i
3) Measure what chips are doing, see if this matches your understanding of d, m & i
4) Discover your mistake
5) Fix mistake.
6) Reduce N by 1
7) Go back to first step
Repeat until N=0.
At N=0, three things now line up. There’s what you think it’s doing; what is really is doing; and what it should be doing,
I haven’t got there yet. N is still >0. However, N today is less than N yesturday. This make take some time. Also, please do not interrupt.
[EDIT – Oops, chip that’s supposed to be listening is instead resetting itself, continuously. That’s not going to help. Still, N–, or will be when I’ve reconnected that pin. Unfortunately, connection is under the surface-mount chip, so I have to desolder the whole bastard thing. Time to take contacts out again.]
[EDIT moar – N–; N still != 0]