Assign 6 inputs in one variable

Deivid · 2008-06-15 00:06

Hi everybody

I can't figure out how to assign 6 ports in one variable.

I've a basic stamp 2 with P3-P4-P5-P6-P7-P8 as inputs.

My idea is to get a event number from this ports, for example if:

P3=1
P4=0
P5=1
P6=1
P7=0
P8=1

event = %101101 = 45

So knowing the value of event, can i work with this code:

rutine1:

IF (event < 1) THEN do_something
event=event - 1
HIGH LED 'just an example
PAUSE 250
LOW LED
GOTO rutine1

do_something:
some code ' here jump when the led has timed on/off "event value" times

Thanks
Deivid

Franklin · 2008-06-15 00:50

You can assign 4, 8 or 16 pin states to a variable of the correct size. Look in the editor help file under Memory and Variables.

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- Stephen

Beau Schwabe · 2008-06-15 04:20

Deivid,
·
You could say something like...
·
event = INS
·
...To capture the entire 16-Bit port.· Then you could mask the·pins you are interested in with something like this...
·
event = event & %0000000111111000
·
...At this point you could use the data just as it is, or you can shift it right by 3 to justify the data with something like this...
·
event = event >> 3
·

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Beau Schwabe

IC Layout Engineer
Parallax, Inc.

Deivid · 2008-06-17 04:12

Thanks Beau Schwabe for your suggestion, I had to change pin configuration, to use only one byte, I looked the editor help file under Memory and Variables as Franklin said, and l came up with this code:

DIRL = %01000000
A         CON   20
porta    VAR  Word           
event     VAR  porta.LOWBYTE

Get_Event:
  compare = %00111111
  event = evento & compare   

IF event = 0 THEN Main
 
Mode_1:
                           
  event = event - 1                 
  PULSOUT A,3                      
  IF (event > 1) THEN Mode_1                           
  GOSUB Mode_2

if event=5 (%00000101), I got 4 pulses in A
should this works?

PS: Right now I haven't a Basic Stamp, this is for a project in classroom.

Thanks
Deivid

Assign 6 inputs in one variable

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