BASIC stamp manual v2.2

3: Using the BASIC Stamp Editor

BASIC Stamp Syntax and Reference Manual 2.2 • www.parallax.com • Page 73

#IF…#THEN is a conditional compile structure similar to the run-time

IF…THEN command except that, at compile time, #IF…#THEN evaluates

Condition(s) and, if it is True, compiles the Statement(s) following #THEN,

otherwise it compiles the Statement(s) following #ELSE.

• Condition is a statement that can be evaluated as True or False

during compile-time.

• Statement is any valid PBASIC instruction.

Example:

' {$PBASIC 2.5}

' set Baud for 9600-N81

#IF ($STAMP = BS2sx) OR ($STAMP = BS2p) #THEN

Baud CON 16624

#ELSE

#IF ($STAMP = BS2px)

Baud CON 16780

#ELSE

Baud CON 16468

#ENDIF

In this example, the constant Baud is set to an appropriate value for the

BASIC Stamp that is specified in the $STAMP directive (not shown). This

code will work with the BS2, BS2e, BS2sx, BS2p, BS2pe, and BS2px.

One important thing to note is that the $STAMP directive is used here as a

compile-time symbol, as if it were defined by #DEFINE. The compiler

treats all the editor directives, $STAMP, $PBASIC and $PORT as “defined”

compile-time symbols set equal to the respective value used in their

declaration. At the time of this writing, using $PBASIC in this fashion is

pointless since the conditional-compile directives are only supported in

PBASIC 2.5, and would cause an error if compiled in any other version of

the language.