I'm building a device to measure temperature. I've programmed my arduino uno to display the temp, as well as the max and min temperatures. What i want to add is a button that, when pressed,it will display the max and min temperatures after the device has taken a few measurements of temperatures; and when the button is pressed again, the will display the regular temperature readings. My question is, would i need to put in an interrupt() inside my loop for this? outside my loop? I'll put up my code if anyone can help.
No, you don't need an interrupt for this. On each pass through loop, see if the switch has been pressed. If so, and it was not pressed before, increment a counter.
Then, if the counter value is odd, do one thing. If it is even, do the other.
Thanks for replying!
But why would I need a counter? (sorry I'm new to this).
With the odd/even counter you are implementing the feature of 'press it once, do one thing, press it again, do another'