设置了一组单片机交通灯汇编，想在加个控制器，让计数器复位该怎么弄。

ID:922638 · 发表于 2021-5-19 15:36

SECOND EQU 30H
TCOUNT EQU 31H
         ORG 00H
START2:
      CLR P1.6
      MOV SECOND,#5
      MOV TCOUNT,#00H
      MOV TMOD,#01H
      MOV TH0,#3CH
      MOV TL0,#0B0H
      SETB TR0
DISP2:
      MOV A,SECOND
      MOV DPTR,#TABLE2
      MOVC A,@A+DPTR
      MOV P2,A
WAIT2:
      JNB TF0,WAIT2
      CLR TF0
      MOV TH0,#3CH
      MOV TL0,#0B0H
      INC TCOUNT
      MOV A,TCOUNT
      CJNE A,#20,NEXT2
      MOV TCOUNT,#00H
      DEC SECOND
      MOV A,SECOND
      CJNE A,#00,NEX2
      MOV SECOND,#5
      CPL P1.6
NEX2:LJMP DISP2
NEXT2:LJMP WAIT2
TABLE2:DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H
END

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