Accessing Portion of Input Port

[Frozen001]

I have PortA on an 18F8722 defined as an input port , and I want to read 3 of these pins at once. Say I want to read 0,3,5 and use the input in an IF statement is this possible?

[The Master]

You can check for a state on all 3 pins with one if statement if thats what you mean

if porta.0=1 and porta.3=1 and porta.5=0 then

endif

In that example 0 and 3 must be high and 5 must be low to execute the code in the if statement

[Frozen001]

I know I can do it that way I was just looking to do it with out the and satements... so I can say something like:

IF PortA135 = $6h then

endif

[skimask]

I know I can do it that way I was just looking to do it with out the and satements... so I can say something like:

IF PortA135 = $6h then
endif

IF ( PortA AND %00101001 ) = $29 (in this case all bits must be logic high) THEN whatever

Or are you talking about pulling out PortA. bits 1, 3, and 5 (or whatever) and putting them in temp. bits 0,1,2 ???

[The Master]

That is also possible. You can use the bit AND operator (&).

if (porta & %00010101)=%00010101 then

The purpose of (porta & %00010101) is to strip out the unwanted information. Only the bit where you see a 1 will be kept from porta. Then you compare that with the value you are looking for

Edit: Looks like skimask got there before me!

[skimask]

Edit: Looks like skimask got there before me!

MMMMWWWWAAAAHAAAAAA!!!!!!
(don't know if you guys do much for Halloween over there or not...but there it is )

[The Master]

(don't know if you guys do much for Halloween over there or not...but there it is )

Have you seen half my threads?!?! I dont think many people celebrate it here but i sure do Its my fave time of the year