I am finding a very typical issue that in input capture i am not detecting the rising edges this i am saying because i dont get input capture interrupts . I am giving feedback of pulse input from one of the port pins back to input capture module. In software i am toggling the port based on some external condition. My doubt is if the software is busy running some other applications it may miss this event. Can i connect a capacitor from port pin to input capture and make it slow rising so that it detects the edges. Please suggest.