[SOLVED] Is an assignment to 8 bit-long variable on 8 bit processor always atomic?

[dsebastian]

@Koepel

A Arduino as a Slave does not wait for something. A Arduino as a Master waits during Wire.endTransmission() and during Wire.requestFrom() and waits as long as the Slave keeps SCL low. That means that in some situations, the Master gets into trouble before the Slave.

Thanks for this information. And, actually, good news for me, because milliseconds to do not count for my Master ...

Consider this topic as closed, even though there would quite a lot of answers (thanks again!) that contain the answers ... so I dont't know which to mark; I leave it unchecked, and hope for your understanding.