(MCU 8051) STC15W104 >> Assembly
LED
STC15W104的輸出驅動方式,如下表格:
P.S. I/O預設是8051雙向模式。
main.s
.org 0h jmp _start .org 100h _start: setb p3.2 call delay_1s clr p3.2 call delay_1s jmp _start ; 1t + ((1t + (4t * 250) + 4t) * 200t) + 4t = 201005t ; 11.0592MHz = 0.09042us ; 201005t * 0.09042us = 18175us delay_18ms: mov r7, #200 d0: mov r6, #250 d1: djnz r6, d1 djnz r7, d0 ret ; 1t + ((4t + 201005t + 4t) * 55) + 4t = 11055720t ; 11055720t * 0.09042us = 999658us ~= 1s delay_1s: mov r5, #55 d2: call delay_18ms djnz r5, d2 ret .end
編譯程式:
$ mcu8051ide --compile main.s
完成