Assembly code for LED Flashing

Sample code for LED Flashing using delay subroutine.
Following code can be using for 8051 and 8052 ICs like: 89c51, 89c52, 89s51, 89s52, 89c2051.

 


		org 0000h
		jmp start

start:		mov p1,#FFh
		call delay
		mov p1,#00h
		call delay
		jmp start

delay:		mov r0,#10
del2:		mov r1,#250
del1:		mov r2,#250
		djnz r2,$
		djnz r1,del1
		djnz r0,del2
		ret
end

 

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