I/O - From Define to code ... must be easy

[mister_e]

Oki, so here's the question assuming the following way to define Aliases to I/O

DEFINE LowBeerLevel  PORTB,1

OR

#DEFINE LowBeerLevel  PORTB,1

On ASM level.

It's still easy to use them later with MOVE?CT macro, or BSF/BCF whatever floats your boat.

What if I wanted to use it with say I2CREAD, HIGH or whatever else PBP command?

Tried few variants of EXT modifier thing.. but LOL...

Seems I'm too idiot to make it work.

I could still work on asm level... but if there's any other way, I would really like to hear them.

Thanks!

[cncmachineguy]

I think the preferred way is this:

LowBeerLevel var portb.1
GoToBeerStore var portb.2
 
while !LowBeerLevel
   :):)
while end
 
ASM
BSF _GoToBeerStore
ENDASM
 
If GoToBeerStore = 1 then
  :(

Ok, silly example, but the point is create your var's or alias as usual, then to use in ASM block stick an underscore before the name.

HTH

[mister_e]

You missed the DEFINE thing, however I came up with the following

        DEFINE  SData   PORTB,1
        DEFINE  SClock  PORTB,2

And then in the compilation time section you use

CreateVar   MACRO    PortIn,BitIn, PortOut, BitOut
PortOut = PortIn
BitOut = #V(BitIn)
        ENDM
        ;
        ;
        ;     somewhere later
        ;
@       CreateVar SData, SerData, DataBit
@       CreateVar SClock, SerClock, ClockBit
        
        SerData   VAR BYTE EXT
        DataBit   CON      EXT
        SerClock  VAR BYTE EXT
        ClockBit  CON      EXT

just need to use 'em like

HIGH SerClock.0[ClockBit]

It has some success, ugly... and we also know this method is not going to work all the time... good example? Shiftout

Keep thinking...

[mister_e]

I think of some other ways, but it's damn too much coding for a so simple thing The asm side's still good enough though. It would have been soo easy if we could do
DEFINE LCD_EN_LINE PORTC,1
and then
LCD_EN_LINE VAR BIT EXT... BUT NOPE
OR
even easier.. have them ready to use, nothing to hack...

Why I do prefer the DEFINE way... hahaha, I have no idea Probably to fit with PBP LCDOUT, HSEROUT, DEBUG etc etc etc

[Darrel Taylor]

This will blink an LED on any pin, as specified in the BLINK_TEST define.
If the define is commented out, it will bypass the blinky and start at the main program.

DEFINE BLINK_TEST PORTB,0
'
' Variables, Constants etc.
'
;----[Blinky test]------USE( DEFINE BLINK_TEST PORTB,0 )-----------------
BLINK_LED VAR BIT EXT
@ #undefine BLINK_LED
@ #define BLINK_LED BLINK_TEST
@ ifdef BLINK_TEST
    INCLUDE "AllDigital.pbp"
    Blink:
        TOGGLE BLINK_LED
        PAUSE 500
    GOTO Blink
@ endif

[mister_e]

hhhhhhhhhhhhhhhhhhhhhaaaaaa! I knew it was something "easy", just never though of the #undefine twist...mmm... something else to chew on

Thanks Mr Tech Support