picbasic +12c508a+soft_stack error

[Archangel]

. . . .

The compiler use between 20 & 22 bytes of RAM itself.. so... no real space for more variables

Hello Mister_E
Could you please explain? This statement appears to me to mean PIC BASIC PRO is an intrepreted code, if not why would the compiler require any of the PIC's ram?
Thank You
JS

[mister_e]

Yeah but the library/compiler need to reserve some variable to work to not interfer with your code... euh.. that's my understanding

support for 12 bit core is limited, and the real explanation can be found at the bottom of the folowiing page
http://www.melabs.com/support/12-bit.htm

so why 20-22... i don't know, seems hungry to me.. but, you have to deal with it.

We already heard something like that for 10F and bring some weird/nasty/dangerous/clever alternate solutions, some who remind...
http://www.picbasic.co.uk/forum/showthread.php?t=4789&

HTH

[Darrel Taylor]

After converting all the IF statements like I suggested above, it did fit in RAM,
and it compiled to 313 WORDS.

mister_e,
Yours fit in RAM too, and compiled to 295 WORDS. (unexpected for Select Case)

You know what that means RIGHT?
Yup, this ain't over yet!

172 WORDS

@ DEVICE WDT_OFF
DEFINE NO_CLRWDT 1 ' Don't kick the Dog 

lowinput       VAR GPIO.0
overtemprature VAR GPIO.1
overload       VAR GPIO.2
outputpin      VAR GPIO.3
green          VAR GPIO.4
red            VAR GPIO.5
FlashCount     var byte
FlashPattern   var byte

TRISIO = %000111

Start:
    If (lowinput=0) then
        IF (overload=0) then             ; lowinput, overload, overtemprature
            if (overtemprature=0) then                      ; 000
                outputpin = 0
                FlashCount = 1 
                FlashPattern = %0001  ; ModeOK
                GOSUB FlashLEDs
            else                                            ; 001
                FlashCount = 5
                FlashPattern = %0011  ; overtempraturemode
                gosub FlashLEDs
                outputpin = 1
            endif
        else                                                ; 010
            if (overtemprature=0) then           
                FlashCount = 2
                FlashPattern = %1001  ; overloadmode
                gosub FlashLEDs
                outputpin =1
                
                FlashCount = 7
                gosub FlashLEDs
                outputpin =0
            else                                            ; 011
                ; --- Action undefined ---
            endif
        endif
    else
        if (overload=0) then                     
            if (overtemprature=0) then                      ; 100
                FlashCount = 5
                FlashPattern = %1001  ; lowinputmode
                gosub FlashLEDs
                outputpin =1
            else                                            ; 101
                ; --- Action undefined ---
            endif
        else                                                ; 110
            if (overtemprature=0) then           
                FlashCount = 5
                FlashPattern = %0011  ; overtempraturemode
                gosub FlashLEDs
                outputpin =1
            else                                            ; 111
                ; --- Action undefined ---
            endif
        endif
    endif
GOTO Start

FlashLEDs:
    REPEAT
         green = FlashPattern.0
         red   = FlashPattern.1
         Pause 500

         green = FlashPattern.2
         red   = FlashPattern.3
         Pause 500
         FlashCount = FlashCount - 1
    UNTIL (FlashCount = 0)
return

However, omid_juve,

There are 3 states that are not accounted for

lowinput=0 overload=1 overtemprature=1
lowinput=1 overload=0 overtemprature=0
lowinput=1 overload=1 overtemprature=1

It may be intentional. Maybe they aren't needed. But normally, unchecked states will cause havoc in your program.

If we knew what was supposed to happen in those states, I think mister_e ..., uh I mean, I could probably reduce it further.

[omid_juve]

it a program for 24v to 12v converter that has 3 input 1.over temperature 2.low input 3.overload and we have 3 output that 2 of them is just indicator and one (outputpin)
is the output for controlling the output voltage according to the situation of inputs.
and just the modes that you saw in the program can occur .
thanks for all of your help. my problem is solved .

[mister_e]

You know what that means RIGHT?
Yup, this ain't over yet!

yup.. sounds like a challenge... 100% PBP??? Maybe doable... scratch, scratch...mmm...

[Darrel Taylor]

12C508A's bad enough,
you want 100% PBP??? too?

Did you know it doesn't even have an overflow flag on timer0?
I didn't, Oi vey!

I had so much fun this time last year with what ended up as the 12-byte cylon scanner,
perhaps I'm a bit over zealous.

The OP is satisfied, and probably wouldn't use it anyways,
So even if the program size was only 83 words, like I have it now,
It'll never be used.

We need a real Optimization contest.
They're just too fun.
<br>

[mister_e]

yup, no eeprom either... so nothing interesting. Think it's like a 16F84A, 16C54... but in 8 pin package

There's always place for an optimization contest, next time, no rules (pic, language etc etc )... agreed?