Macro CMPEQ?TTT not found in macro file

[Melanie]

You can only do mathematical equations or compares within parenthisis within a stacked statement. With this item...

Flag_Switch_activ_on_ = Switch

... you are asking the contents of a Port PIN to be transferred into a variable... this is NOT an equation or a compare function and cannot be included in a single valid BASIC statement whilst simultaneously elsewhere within that same statement you are performing an equation.

It still comes down to the fact you have TWO (or more) equal signs at different parts of a single statement which is not legal. Put Flag_Switch_activ_on_ = Switch on it's own line, then build your IF/THEN accordingly.

[Darrel Taylor]

In other languages such as Pascal, Logical comparisons are treated like a Mathmatical formula. Then after the formula is calculated, any non-zero number is considered TRUE. Consequently, the result of that formula can be assigned to another variable if so desired.

In PicBasic, that would require additional time, temporary variables and code space. Things that don't matter on a computer with GIGA hz, ram, and disk space. But matters alot for a PIC.

Fotunately, the same things can be accomplished in different ways. For instance...

Is_Switch_aktiv= ( Flag_Switch_activ_on_ = Switch )

can be like this...

Is_Switch_aktiv= ( Flag_Switch_activ_on_ ^/ Switch )       ; ^/ is "Not Exclusive OR"


To see how that works we can look at the Truth Tables.
<table border="0" cellspacing="7" cellpadding="4"> <tr> <td> <table CELLSPACING="0" BORDER="1" CELLPADDING="2" WIDTH="202"> <tr> <td WIDTH="99%" HEIGHT="16" colspan="3"> <p align="center">Equals sign</td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">A</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">B</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">Out</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> </tr> </table> </td> <td> <table CELLSPACING="0" BORDER="1" CELLPADDING="2" WIDTH="202"> <tr> <td WIDTH="99%" HEIGHT="16" colspan="3"> <p align="center">Exclusive OR&nbsp; ^ </td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">A</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">B</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">Out</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"> <p ALIGN="CENTER"><font face="Arial" size="2">0</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"> <p ALIGN="CENTER"><font face="Arial" size="2">1</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"> <p ALIGN="CENTER"><font face="Arial" size="2">1</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"> <p ALIGN="CENTER"><font face="Arial" size="2">0</font></td> </tr> </table> </td> <td> <table CELLSPACING="0" BORDER="1" CELLPADDING="2" WIDTH="202"> <tr> <td WIDTH="99%" HEIGHT="16" colspan="3"> <p align="center">Not Exclusive OR&nbsp; ^/</td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">A</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">B</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">Out</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">0</font></td> </tr> <tr> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> <td WIDTH="33%" HEIGHT="16"><font FACE="Arial" SIZE="2"> <p ALIGN="CENTER">1</font></td> </tr> </table> </td> </tr> </table>
An Exclusive OR outputs a 1 when either of the inputs are a 1 but not both. This is the same as != in a logical expression.
Since we want "=", simply invert the XOR result with "^/".
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[BigWumpus]

OK(8chars)

[Darrel Taylor]

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