How instant are Instant Interupts?

[Darrel Taylor]

If you're doing it with software polling, timers don't add much value unless you plan on doing other things at the same time. But all that really makes things complicated.

So here's a simple example that does the same thing with pauseus instead of a timer.

Delay = 1000

Wait4Pulse: 
    IF !PORTA.0 THEN Wait4Pulse     ; Wait for incoming pulse
    PORTA.1 = 1                     ; Start Output pulse
    PAUSEUS Delay                   ;   pause for pulse width
    PORTA.1 = 0                     ; End of Output pulse

Wait4PulseEnd:                      ; Make sure input pulse is finished
    IF PORTA.0 THEN Wait4PulseEnd

GOTO Wait4Pulse