复件 交通灯.asm

这是关于交通灯2的单片机实验。它包含了原理图以及代码。

          ORG        0000H
          AJMP       MAIN
          ORG        000BH
          AJMP       T0_INT
MAIN:     MOV        SP,#50H
          MOV        IE,#82H
          MOV        TMOD,#01H
          MOV        TL0,#78H
          MOV        TH0,#0ECH
          SETB       TR0
N0:       MOV        R3,#45
          MOV        P3,#07EH
N01:      CJNE       R3,K#05,$
N02:      MOV        P3,#0BEH
N1:       MOV        R4,#00H
N11:      CJNE       R4,#32H,$
N12:      CPL        P3.6
          CJNE       R3,#00,N1
N2:       MOV        R3,#25
          MOV        P3,#OCFH
          CJNE       R3,#05,$
          MOV        P3,#0DDH
N3:       MOV        R4,#00H
N31:      CJNE       R4,#32H,$
N32:      CPL        P3.1
          CJNE       R3,#00,N3 
          MOV        R3,#45
          SJMP       N0   

T0_INT:   MOV        TL0,#78H
          MOV        TH0,#0ECH
          JNB        P3.2,T02
          INC        R4
          INC        R5
          CJNE       R5,#64H,T01
          MOV        R5,#00H
          DEC        R3
T01:      ACALL      DISP
          RETI
T02:      CLR        TR0
          PUSH       P3
PINT0:    MOV        P3,#0DEH
PN0:      JNB        P3.3,PN2
PN1:      ACALL      DISP
          SJMP       PN0
PN2:      POP        P3
          SETB       TR0
          RETI
          
DISP:     MOV         R7,#00H
          MOV         B,#0AH
          MOV         A,R3
          DIV         AB
          MOV         79H,A
          MOV         7AH,B
DSI:      MOV         A,79H
          MOV         DPTR,#TAB
          MOVC        A,@A+DPTR
          MOV         P1,A
          MOV         P2,#11110101B
          DJNZ        R7,#00H
DS2:      MOV         A,7AH
          MOVC        A,@A+DPTR
          MOV         P1,A 
          MOV         P2,#11110101B
          DJNZ        R7,DS2
          RET
          
TAB       DB           0C0H,0CF9H,0A4H 
          DB           0B0H,99H,92H
          DB           82H,0FBH,80H
          DB           90H,88H
          
          END