How instant are Instant Interupts?

[Dave]

jmgelba , These lines will never execute because of the value of "A" before hand.

if (A <=4) THEN <<<<<<<<<<<<<<<<<<<<<<<<< here A = 6
GOTO loop
if (A = 5) then 'if A=5 fets are still on <<<<<<<<<<<<<<<< here A = 6
pauseus 1500 'set max time for fets to be on
PORTB = %00000111 'turn off fets

Also wheres the ENDIF's?

Dave Purola,
N8NTA

[jmgelba]

Why would A = 6?

Before the goto, A is set to 0, then I'm counting up. If A becomes less than or equal to 4 something happens. If A = 5 then something else happens.

[Dave]

jmgelba, Because "While" it is the loop A is being incremented until it equals 6 right?

Dave Purola,
N8NTA

[jmgelba]

I thought I was incrementing it until it reached 5? If its equal or less than 4 (>=4) is does something, if it is =5 than it does something else. After it has reached either of those conditions it shouldnt increment again.

[jmgelba]

So could this be used?

Repeat
PORTB = %00000111
Until
PORTA.0 = 1

[Dave]

jmgelba, Yes it could... You understand why the counter = 6 dont you?

while A <= 5 'follow status of i/p turn off fets if i/p goes away
PORTB = %00001100
A = A + 1
IF (PORTA.5 = 1) THen
PORTB = %00000111
WEND

Because if A = 5 you still increment A. Right? So when you drop out of the loop A = 6..

Dave Purola,
N8NTA