标题:
有没有大佬可以用大白话帮忙讲明白这个单片机汇编程序?
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作者:
pcyyyy
时间:
2021-11-19 19:00
标题:
有没有大佬可以用大白话帮忙讲明白这个单片机汇编程序?
ORG 0000H
AJMP MAIN
ORG 0100H
MAIN: MOV P2,#00H
KEY0: MOV P3,#0FEH
JNB P3.4,K1
JNB P3.5,K2
JNB P3.6,K3
MOV P3,#0FDH
JNB P3.4,K4
JNB P3.5,K5
JNB P3.6,K6
MOV P3,#0FBH
JNB P3.4,K7
JNB P3.5,K8
JNB P3.6,K9
AJMP KEY0
K1: MOV P0,#0F9H
ACALL YSH1S
AJMP KEY0
RET
K2: MOV P0,#0A4H
ACALL YSH1S
AJMP KEY0
RET
K3: MOV P0,#0B0H
ACALL YSH1S
AJMP KEY0
RET
K4: MOV P0,#099H
ACALL YSH1S
AJMP KEY0
RET
K5: MOV P0,#092H
ACALL YSH1S
AJMP KEY0
RET
K6: MOV P0,#082H
ACALL YSH1S
AJMP KEY0
RET
K7: MOV P0,#0F8H
ACALL YSH1S
AJMP KEY0
RET
K8: MOV P0,#080H
ACALL YSH1S
AJMP KEY0
RET
K9: MOV P0,#090H
ACALL YSH1S
AJMP KEY0
RET
YSH1S: MOV R3,#10
LOOP: MOV R4,#200
LOOP1: MOV R5,#230
DJNZ R5,$
DJNZ R4,LOOP1
DJNZ R3,LOOP
RET
END
作者:
wc86110
时间:
2021-11-20 09:34
这货要软硬结合才能明白它要做什么，光有注释只能一知半解
作者:
liht1634
时间:
2021-11-20 12:22
ORG 0000H ;复位处
AJMP MAIN ;短跳转至MAIN也就0100H地址处
ORG 0100H
MAIN: MOV P2,#00H ;P2.7-P2.0置0
KEY0: MOV P3,#0FEH ;P3.7-P3.1置1，P3.0置0
JNB P3.4,K1 ;P3.4为0则跳转至K1处
JNB P3.5,K2
JNB P3.6,K3
MOV P3,#0FDH
JNB P3.4,K4
JNB P3.5,K5
JNB P3.6,K6
MOV P3,#0FBH
JNB P3.4,K7
JNB P3.5,K8
JNB P3.6,K9
AJMP KEY0
K1: MOV P0,#0F9H ;P0=1111 1001B
ACALL YSH1S ;短调用，延时
AJMP KEY0 ;短跳转回KEY0，差不多就是C的While(1)
RET ;这里是跑飞拉回
K2: MOV P0,#0A4H
ACALL YSH1S
AJMP KEY0
RET
K3: MOV P0,#0B0H
ACALL YSH1S
AJMP KEY0
RET
K4: MOV P0,#099H
ACALL YSH1S
AJMP KEY0
RET
K5: MOV P0,#092H
ACALL YSH1S
AJMP KEY0
RET
K6: MOV P0,#082H
ACALL YSH1S
AJMP KEY0
RET
K7: MOV P0,#0F8H
ACALL YSH1S
AJMP KEY0
RET
K8: MOV P0,#080H
ACALL YSH1S
AJMP KEY0
RET
K9: MOV P0,#090H
ACALL YSH1S
AJMP KEY0
RET
YSH1S: MOV R3,#10
LOOP: MOV R4,#200
LOOP1: MOV R5,#230
DJNZ R5,$ ;R5内容减1 不为0返回本行继续执行 为0就向下执行
DJNZ R4,LOOP1 ;就是循环等待
DJNZ R3,LOOP
RET
END
作者:
冰火风轮
时间:
2021-11-20 17:11
P2 P3 组成矩阵键盘，识别键值驱动 P0 口共阳数码管，显示 1--9 一秒
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