Help ?

[Darrel Taylor]

ROFL!

And I thought you were the High Colonic Master.

IF colons separate multiple statements on the same line as an IF, they are ALL executed if the condition is TRUE, and none will execute if it's false.

So the 2 examples shown, are the same thing.

.

[skimask]

ROFL!
And I thought you were the High Colonic Master.
IF colons separates multiple statements on the same line as an IF, they are ALL executed if the IF condition is TRUE, and none will execute if it's false.
So the 2 examples shown, are the same thing.
.

I know that's what the manual says, but in the past, I've had certain situations where if one of those statements after the THEN is a goto or a gosub, the If/Then 'acts up' under certain circumstances. I can't quantify exactly what those circumstances are...I just know that I've been avoiding that certain way of doing the IF/THEN statements for a reason ever since it bit me way back when.
Maybe that's one of those things that got fixed back in PBP 2.2, or it might've gotten fixed since, I don't know...I just avoid it...

[T.Jackson]

Here's a how to save on some code space a long with a marginal increase in speed. Avoid using the AND operator where possible by multiple nesting IF's.

if (EGT > 300) then
   if (RPM > PumpAdd +10) then
      if  (FlameOut_1=0) then
          FlameOut_1=1 
          gosub opengasoff  'Close Gas Valve
      endif
   endif
endif

Also try to avoid GOTO and GOSUB where possible. Most often, programs which make extensive use of them turn out to be spaghetti code.

[skimask]

On 2nd glance at the code (which is over 2400 lines)...

There's a handful of places in the code as a whole where you are decrementing (or incrementing) a byte variable without doing any underflow (or overflow) checking. For instance, a variable contains 4 and you subtract 5, now you've got 255 instead of -1 (which PBP doesn't do)...
Add underflow and overflow checking to those spots. Only subtract if the value is large enough to be subtracted from...same thing with adding, only add if the number is small enough to be add to...to keep the byte (or word) values from under- or over- flowing.

[jetpr]

Ok
thanks to all for the Idea off code speed and help

i going to modify the code more efficient to the PICBASIC PRO Code.

[jetpr]

Thanks to Melanie and all other.

I change from Pic18f252 to Pic18f2620 and now is working with no problem up to now.

now i compiler and program the PIC and no Glitch.

[jetpr]

after change all the code to the new pic18f2620 and start working in my ECU and made new board the things do not go very well as expected.

so if some one have done a big project or pro application with picbasic pro and that me of an opinion upon as achieving to do it.