Button Flag Question

[flatdog]

Dear Pete,

If I have a momentary switch (pushbutton) and press it the button flag changes from 0 to 1. Does it change back to 0 the next time the button is pressed or on the release of the first press?

Thank you,

Philip

[Pete Dowson]

If I have a momentary switch (pushbutton) and press it the button flag changes from 0 to 1. Does it change back to 0 the next time the button is pressed or on the release of the first press?

As documented, the button flags are toggled each time the associated button goes from "off" to "on". That's why they are useful as latches for momentary buttons. They wouldn't be needed for self-latching (toggle) switches, and would be useless for momentary buttons if they toggled when the buttons went from "on" to "off" as well, wouldn't they? You'd simply use the button state not the flag.

Regards

Pete

[flatdog]

Yes - I see what you mean - daft question with hindsight, it all seems so obvious now.

Kind regards,

Philip