Chief Delphi - How do you get interrupt when digital input is set

Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- Java (http://www.chiefdelphi.com/forums/forumdisplay.php?f=184)

- - How do you get interrupt when digital input is set (http://www.chiefdelphi.com/forums/showthread.php?t=134323)

ericalbers

10-02-2015 20:42

How do you get interrupt when digital input is set

Is there code showing how to get a interrupt when say a limit switch is hit?

I see the
public abstract class InterruptHandlerFunction<T>

is there example code of how to implement this for the requestInterrupts off DigitalInputs?
I'm having trouble with how to define the polymorphism of the function properly.

Thanks

Ben Wolsieffer

10-02-2015 20:52

Re: How do you get interrupt when digital input is set

This is how I used interrupt handlers in a gyro driver. The really wierd part about it is that the interruptFired() method is package private, so any class that uses it needs to be in the edu.wpi.first.wpilibj package. I think this was an oversight on the part of the authors of WPILib.

Code:

DigitalInput interrupt = new DigitalInput(0);



// Register an interrupt handler

interrupt.requestInterrupts(new InterruptHandlerFunction<Object>() {



     @Override

     public void interruptFired(int interruptAssertedMask, Object param) {

          // Do stuff

     }

});

// Listen for a falling edge

interrupt.setUpSourceEdge(false, true);

// Enable digital interrupt pin

interrupt.enableInterrupts();

ericalbers

10-02-2015 20:55

Re: How do you get interrupt when digital input is set

Thanks, actually the private part is what was reallly killing me, I just could not get the thing to be happy I had the same code...

testinput =new DigitalInput(0);

testinput.requestInterrupts(new InterruptHandlerFunction<Object>()
{

@Override
public void interruptFired(int interruptAssertedMask, Object param)
{

}
});

I just couldn't get it to like the interruptFired no matter how I set it up...the base class having an error explains it though
Thanks

Ether

11-02-2015 17:06

Re: How do you get interrupt when digital input is set

Quote:

Originally Posted by ericalbers (Post 1441529)

Is there code showing how to get a interrupt when say a limit switch is hit?

How much code do you plan to put into the interrupt routine?

All times are GMT -5. The time now is 10:52.