基于51单片机的带时间显示和紧急控制的交通灯的设计1

STATUS2:                            ;南北绿灯闪转黄灯,东西红灯        
                      MOV R3,#03H                 ;绿灯闪3次
FLASH:
                      MOV P1,#9FH       
                      MOV R2,#03H
                      LCALL DELAY_DISPLAY
                      MOV P1,#96H       
                      MOV R2,#03H
                      LCALL DELAY_DISPLAY
                      DJNZ R3,FLASH
                      MOV P1,#06H                  ;南北黄灯,东西红灯       
                      MOV R2,#10                  ;延时1秒
                      LCALL DELAY_DISPLAY
                      RET
STATUS3:                            ;南北红灯,东西绿灯       
                      MOV P1,#69H       
                      MOV R2,#200                 ;延时20秒
                      LCALL DELAY_DISPLAY
                      RET
STATUS4:                            ;南北红灯,东西绿灯闪转黄灯       
                      MOV R3,#03H                 ;绿灯闪3次
FLASH1:
                      MOV P1,#6FH        
                      MOV R2,#03H
                      LCALL DELAY_DISPLAY
                      MOV P1,#69H       
                      MOV R2,#03H
                      LCALL DELAY_DISPLAY
                      DJNZ R3,FLASH1
                      MOV P1,#09H                 ;南北红灯,东西黄灯       
                      MOV R2,#10                 ;延时1秒
                      LCALL DELAY_DISPLAY
                      NOP
                      RET
                   INIT8279:                                ;8279初始化子程序
                      PUSH                DPH                        ;保存现场
                      PUSH                DPL
                      PUSH                ACC
                      LCALL DELAY                      ;延时
                      MOV                 DPTR ,#Z8279
                      MOV                 A,#LEDMOD                  ;置8279工作方式

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本文关键字：单片机  交通灯  自动控制-单片机，电子制作 - 自动控制-单片机