coffeemachine

@AchimErk if I understand everything correctly, your suggestion (also listed in #537), is equivalent to mine, when calling `clearInterrupt()` at the beginning of the ISR. The advantage of this solution...

@matthijskooijman indeed it would be simpler. However that would be a breaking API change in my view. Code that relies on the interrupt not being cleared before the ISR has...

@AchimErk I think I got you perfectly and this is also the reason why I created this PR. > Having the possibiltiy to call "ClearInterrupt" before read, does not change...

> Hi coffeemahine, > > you are right. > > I did look at your comment, but I did not look into the code in detail. As it prevent clear...