[simpits-tech] EPL syntax

[Mark Doran]

“ifactive” is obsolete syntax now, Frank.

Taken from Ralph’s USB syntax primer (that you have read by now, right??
;-):

-- begin excerpt

  The following is OBSOLETE:
 	
  ifactive (<module,row,mask>) call|jump <label1>; else call|jump <label2>;

[snip explanation of old syntax]

  >>>>>>>>>>>>>USE<<<<<<<<<<<<<<<<<
  1. for ifactive(....)

	use:

	  if(deviceName.ButtonName) ..... else ......

  2. for ifactivematch(.....)

     use:
     
     byte scan;
     scan = scanrow(0,0);  //get current state of switches on module 0 row 0
     scan &= 0x0F;         //mask bits of interest
     if(scan == 0b00000001) jump Proc0;  //active switches (on) are 1’s
     if(scan == 0b00000010) jump Proc1;
     if(scan == 0b00000100) jump Proc2;
     if(scan == 0b00001000) jump Proc3;
     if(scan == 0b00000101) jump Proc4;  //if switches 0&2 are on and 1&4
are
                                         //off

-- end excerpt

It's much faster to write code with the new syntax and it's much easier to
read back as well (MHO ;-).

Cheers,

Mark.


-----Original Message-----
From: simpits-tech-admin@simpits.org [mailto:simpits-tech-admin@simpits.org]
On Behalf Of Frank Riedel
Sent: Friday, June 27, 2003 8:28 AM
To: simpits-tech@simpits.org
Subject: [simpits-tech] EPL syntax

Hi All !
 
I have a quest i cant find an answer to:
EPICcenter 0.1.1.55
 
ifactive(<label>) jump <label>;
- EPICcenter return - Syntax error (ifactive) -- unknown token
 
what is the correct syntax ?
 

Frank