51单片机12个LED灯正向走,低电平点亮原理图与汇编语言程序 -

标题: 51单片机12个LED灯正向走,低电平点亮原理图与汇编语言程序 [打印本页]

作者: 奔跑@666 时间: 2022-5-15 19:18
标题: 51单片机12个LED灯正向走,低电平点亮原理图与汇编语言程序

  ORG  0000H
   AJMP MAIN
   ORG 0030H
MAIN:
   MOV    P1,#0FFH
   MOV    P3,#0FFH
   MOV    P1,#0FEH
   MOV    R1,#00
LP:
   ACALL LP2
   MOV    A,P1
   RL       A
   INC       R1
   MOV    P1,A
   CJNE    R1,#08,LP
   MOV    P1,#0FFH
   MOV    P3,#0FEH
   MOV    R2,#00
LP1:
   ACALL LP2
   MOV    A,P3
   RL       A
   INC    R2
   MOV    P3,A
   CJNE    R2,#04,LP1
   MOV    P3,#0FEH
   AJMP MAIN
LP2:
   MOV    40H,#0FFH
LP3:
   MOV    41H,#0FFH
   DJNZ    41H,$
   MOV    42H,#0FFH
   DJNZ 42H,$
   DJNZ 40H,LP3
RET
   END

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