The prelude to creating a project is the same as that of C language, so I won’t go into details. One thing you need to note is that it is no longer a .C file, but an .ASM file. . . .
Make P1 port output 0 for 500ms, then output 1 for 500ms, and repeat this cycle.
ORG 00H ; Pseudo instruction
START:
MOV P1,#00H ; assign 0 to P1
CALL DELAY ;Call delay
MOV P1,#0FFH ; assign P1 to 1
CALL DELAY
JMP START ; jump to START
DELAY: MOV R3,#50
D1: MOV R4,#20
D2: MOV R5,#248
DJNZ R5,$
DJNZ R4,D2
DJNZ R3,D1
RIGHT;
END; ; Pseudo instruction
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Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
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