Same code in different Pins

[Josuetas]

Hi!, i am currently developing an application with one wire devices, i have for convenience connected several DS1993 devices to different I/O pins (even from different ports), Is there a way of executing the same code on different pins?.

Can i make this code reusable (something like a funtion gosub) for different pins?

PIN var Portb.0
owout PIN, 1, ["data here"]

how can i change the I/O pin or the var PIN?

Thanks in advance!

[skimask]

Hi!, i am currently developing an application with one wire devices, i have for convenience connected several DS1993 devices to different I/O pins (even from different ports), Is there a way of executing the same code on different pins?.

Can i make this code reusable (something like a funtion gosub) for different pins?

PIN var Portb.0
owout PIN, 1, ["data here"]

how can i change the I/O pin or the var PIN?

Thanks in advance!

It's not what you want, but:

pin var byte
pin1 var portb.0
pin2 var portb.1
pin3 var portb.2...etc.etc.etc...

pin = 2
gosub outputstuff

outputstuff:
select case pin
case 1
owout pin1,1,["data here"]
case 2
owout pin2,1,["data here"]
case 3
owout pin3,1,["data here"]
end select
return

[Josuetas]

That is a simple choice, but the code i posted is just an example, my real code could use up to 800 words, an maybe the code space isn´t enough.

Come on there must be some way, I just don´t understand it, it seems to be in ASM. I really dont know.


SAME QUESTION

How can you change the definition of a variable in the middle of the execution???

PIN var PORTB.0


and later

PIN var PORTB.1


Thanks

[Darrel Taylor]

Assuming you have them on PORTB as shown. Just use Pin Numbers.

PIN  VAR BYTE

for PIN = 0 to 7
    owout PIN, 1, ["data here"]
next PIN

Numbers 0-7 are usually PORTB.0 thru PORTB.7, 8-15 can be PORTC, but it depends on the chip you are using.

[skimask]

Assuming you have them on PORTB as shown. Just use Pin Numbers.

PIN  VAR BYTE

for PIN = 0 to 7
    owout PIN, 1, ["data here"]
next PIN

Numbers 0-7 are usually PORTB.0 thru PORTB.7, 8-15 can be PORTC, but it depends on the chip you are using.

I've got no idea how this came to me...magic I suppose...
How about a variable that's 'locked' into a certain memory location (porta in this case), and it's set up as an array.
Since the ports are usually in sequential order in the memory map, it seems to me like a person should be able to access those bits as bits of a variable, like you would any other ram variable.
i.e.
PIN var byte[4] $F80 system '5 bytes to handle porta, portb, portc, portd, porte, in the case of a PIC18F4620

then you'd access the pins by pin.0[index]...

Wouldn't that work?

[Darrel Taylor]

Nope, won't work Skimask.

For instance, with this statement...

owout pin.0[index], 1, ["data here"]

PBP will do an Array Out from the indexed pin, then use that result as the "PIN number" which will be either a 0 or 1. So it will always use either PORTB.0 if the pin is low, or PORTB.1 if the Pin is high.
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