Using Program Loops to Create Time Delays

Using Program Loops to Create Time Delays, time delay of 100 ms

Code:

radix dec
lp_cnt1 equ 0x21
lp_cnt2 equ 0x22
movlw 200
movwf lp_cnt1,A
loop1 movlw 250
movwf lp_cnt2,A
loop2 dup_nop 17 ; 17 instruction cycles
decfsz lp_cnt2,F,A ; 1 instruction cycle (2 when [lp_cnt1] = 0)
bra loop2 ; 2 instruction cycles
decfsz lp_cnt1,F,A
bra loop1

_________________
M. S. Rakha, Ph.D.
Queen's University
Canada

Author: DrRakha
Mastermind

Posts: 2715
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