How to add minimum time width Rising Edge interrupt Mega2560

[Vindhyachal.takniki]

1. I am using atmega2560 & configured rising edge interrupt by below code. Normally pulse is low, & it gives a pulse of minimum 10ms whenever event occurs. Have to reject any rising edge if pulse width is less than 10ms.

const byte interruptPin = 2;

void setup()
{
  pinMode(interruptPin, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(interruptPin), isr_func, RISING);
}


2. Is there any arduino function for it? Or how to do it arduino?

[Nusa]

Instead of RISING use CHANGE. Inside the ISR you can determine if it's rising or falling by reading the pin. If the fall came less than 10 ms after the rise you can reject the pulse. You'll also need something in your main loop or on a timer interrupt to determine when the pulse is to be accepted.

Not the only way, but the one that jumps to mind.