State change detection (edge detection) changed for INPUT PULLUPĬonst int buttonPin = 3 // the pin that the pushbutton is attached to do a thing for X seconds after a button is pressed It does what I think you originally asked, and may give you a bit of a kick-start. The flag prevents a re-press in the middle of the timer being honoured. The function doThisStuff() then runs for whatever the required time is. You'll see I just make a "note" of the time at which the button becomes pressed, and set a boolean flag.
ARDUINO PUSH BUTTON TO START PROGRAM CODE
I wrote the code below based purely on what you said in your opening post, not the second one, which does complicate things but on the face of it still seems to me like a candidate for millis().įWIW have a look at the code below, which is based on the state change detect example, but with the button wired to ground for active low with the internal pullup enabled. I read the beginners' guide on millis() but I don't believe it is really addressing my issue, if i am not mistaken I managed to program this using delay() but the issue is that I need the process to stop and all the led to go off if the object leaves the required distance while the process is in ongoing. when the object leaves the distance range, the second led goes off.When the time is completed, the process stops and another led goes on. This process runs for a certain period of time which is defined. if step 2 is true (iow object is still in the range), then I can press a push button (just press it, not hold it pressed) to launch a process and switch off the first led.OK so far, I am using a Sharp distance sensor and with an easy IF function I can make this work when an object gets close to my machine (I have defined a specific range for this) a first led starts to blink.
What I am trying to develop is the following chain of actions: Thanks both, let me define my project a little further.
0 kommentar(er)
