how can i get a 1 msec delay ?

[zika1212]

i'm using pic16f84a and programming it using assembly ,,
how can i write a code to get a 1 msec delay ??

 

[csaba911]

According to my test's on MPLAB 6.42 this will give you exactly 1000uS delay using 4MHz clock.

DEL	MOVLW	.2         ;Delay start here, count back onece from 75 and onece from 255.
	   MOVWF	DELF2      ;990 cycle plus the 4 mov cycle=4 and the 2 goto=6 Equall 1000 cycle.
	   MOVLW	.75        ;=1ms
	   MOVWF	DELF1
DEL0  DECFSZ  DELF1      ;Start decrementing the file registers.
	   GOTO	 DEL0
	   DECFSZ  DELF2
	   GOTO	 DEL0
	   RETURN             ;Go back if is done

I'm sure there is other way to do it, I just can't find it right now.
ps:I'm learning assembler myself to
Comments are welcome.

STEVE

 

[Nigel Goodwin]

Your first location for anything PIC should be the PICList at http://www.piclist.com, for your particular request they have a delay code generator - it's really great!.[/quote]

 

[csaba911]

I got this messages :!:

You are not authorized to view this page


:?: :?: :?:

STEVE

 

[Nigel Goodwin]

I got this messages :!:

You are not authorized to view this page

It works fine here?.

Try the direct page for the delay generator .

 

[csaba911]

What a relief, I thought I'm on their BLACk LIST.

I don't get the NOT AUTHORISED MESSAGE anymore, I got this
"The page cannot be displayed"

They must have some restriction for something....
I do remember downloading some math routine last year from piclist!

STEVE