On Sat, Jul 06, 2013 at 10:03:27PM +0800, Electronic Consultation wrote:
> after
> LedTimer RES 1
>=20
> How can I set it to 20 decimal ?

Exactly the same way you did it with COUNT:

	MOVLW	.20	; Note I normally change my default Radix to decimal
	MOVWF	LedTimer

> thanks
> On 6/07/2013 9:42 PM, Byron Jeff wrote:
> > On Sat, Jul 06, 2013 at 07:08:16PM +0800, Electronic Consultation wrote=
:
> >> Guys,
> >>
> >> I want to reduce LedTimer after interrupt but it returned to 20 again
> >> after interrupt,
> >> Do you have idea how handle it ?
> > The Equate (EQU) you have below fixes the value of LedTimer to 20. Sinc=
e
> > you were moving it to COUNT, I figured you wanted a constant 20 counts =
to
> > count down in COUNT (which I do not see a definition for).
> >
> > Your code uses the RES directive to declare variables. If you want LedT=
imer
> > to change, then it needs to be a variable too.
> >
> > BAJ
> >
> >> thanks
> >> [CODE]LedTimer EQU .20 ;10 decimal (for content of the counter to get =
100ms)
> >>
> >>       led_state_1
> >>                   bcf     INTCON,T0IF             ;clear the interrupt=
 flag
> >>                   bsf      PORTB, POWERLED         ;Turn on LED
> >>               movlw LedTimer
> >>                   movwf COUNT
> >>
> >>
> >>             ;counting
> >>
> >>            check_counter
> >>                           btfss INTCON,T0IF
> >>               goto  check_counter
> >>
> >>
> >>                        sublw .1
> >>                        btfss STATUS, Z        ;Is the result 0, clear =
COUNT
> >>
> >>
> >>              goto  check_counter     ;if false check the COUNTER again
> >>                        goto  next_state        ;if true  go to this st=
atement
> >>
> >>
> >>
> >>           next_state
> >>                       clrf    COUNT             ;if false go to this
> >> statement
> >>                       incf    LedState,1            ; if 00 increase t=
he
> >> state, for the next state
> >>
> >>                       return[/CODE]
> >> --=20
> >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
> >> View/change your membership options at
> >> http://mailman.mit.edu/mailman/listinfo/piclist
>=20
> --=20
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--=20
Byron A. Jeff
Chair: Department of Computer Science and Information Technology
College of Information and Mathematical Sciences
Clayton State University
http://faculty.clayton.edu/bjeff
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