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I need some code to pause the Arduino code until a button is pressed. I have a long program and at point I need a condition that if a Button on pin A2 is pressed then go forward, otherwise wait. I tried using if with a condition but it failed for my purpose.
As @trickdev points out you will need to subscribe to this event but if you use the Events window in Visual Studio it will add the necessary code – including the empty handler – for you. With event driven programs you are always waiting until the next “thing” happens.
Instead of doing “If the button is pressed then continue” you need to do “while the button is not pressed do nothing”. So while it’s not pressed ( digitalRead (A2) == HIGH) don’t do anything. As soon as digitalRead (A2) returns LOW (so it is not == HIGH any more) the while loop will finish and your sketch can continue.
What happens when a button is pressed on an Arduino?
As soon as digitalRead (A2) returns LOW (so it is not == HIGH any more) the while loop will finish and your sketch can continue. I write all about the while loop in an article here. Here are two ways you might have wired the button. If you wired it with a pullup, you will need to test for LOW (the button will ground its output when pressed).
How to wait for event to happen in C #?
Use Wait () Method of ManualResetEventSlim inside my Task.Run iteration Blocks the current thread until the current ManualResetEventSlim is set. And immediately call Reset () of ManualResetEventSlim Method
How do you pause a thread in C #?
Sets the state of the event to signaled, which allows one or more threads waiting on the event to proceed. and we do that by subscribing to the OnJobFinished event and set the ManualResetEventSlim to true. Now our List of Jobs is executing sequentially one after the other!