I'm using an Attiny1614 and want to share UPDI with an input.
The spec talks about the UPDI programming mode being based on a fuse setting. But, how does one set a fuse, except through the programming interface?
I'm using an Atmel-Ice for programming. When I used it for a project last fall, I think it just worked. I don't recall having to set a fuse or do anything special. Maybe it uses the high voltage method by default.
That's ok, the shared input won't be connected to anything during programming.
I just want to make sure UPDI can safely be shared with another input.
Based on this thread:
I think it can.