What is Attn Pin Timing?

How long does the Attn Pin go low when activated?

Hello Pat!

The ATTN pin is a latching interrupt. It is HIGH in the unarmed state, and will be pulled LOW when armed. Once it has “fired”, the line goes HIGH and will remain there until rearmed.

We have put together an Attention Pin ( ATTN ) Guide which goes into depth about how it functions. The writing is tailored for the Feather Starter Kit, but the principals remain the same. If you have any questions not addressed in the guide, please put those in this thread. I’ll be sure to give you an answer, as well as update the guide.


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Thanks @zfields . Just what I needed.