alarm.sdi

多个仿真例子

,,,;本程序是一个以89C51为核心的声光报警器控制程序
,,,;系统的晶振频率12MHz，外界报警触发脉冲接至INT0，报警复位按钮接P1.2，喇叭接P1.1
,,,;当外界报警脉冲触发报警后，LED(接P1.0)以1Hz的频率闪动，同时喇叭种发出"Wu,Wa......"的警笛声
,,,;该声音由1kHz和500Hz方波以0.5秒为间隔交替发声
,,,;值班人员按动报警复位钮后声光报警停止。
,,,HISOUND BIT     00H     ;高音标志
000B,,,LED     BIT     P1.0    ;驱动LED接口
000B,,,SPEAKER BIT     P1.1    ;喇叭
000B,,,STOP    BIT     P1.2    ;复位按钮
,,,BR2     EQU     0AH     ;1区R2
,,,        ORG     0
0000,02 00 30,,        LJMP    START
,,,        ORG     3
0003,02 00 6C,,        LJMP    ALARM
,,,        ORG     0BH
000B,02 00 71,,        LJMP    T0S
,,,        ORG     1BH
001B,02 00 89,,        LJMP    T1S
,,,        ORG     30H
0030,75 81 60,START,START:  MOV     SP,#60H
0033,75 0A 0A,,        MOV     BR2,#10
0036,D2 88,,        SETB    IT0
0038,D2 A9,,        SETB    ET0
003A,D2 AB,,        SETB    ET1
003C,D2 A8,,        SETB    EX0
003E,D2 B9,,        SETB    PT0
0040,D2 AF,,        SETB    EA
0042,D2 00,,        SETB    HISOUND
0044,D2 90,,        SETB    LED     ;熄灭LED
0046,C2 91,,        CLR     SPEAKER
0048,75 89 11,,        MOV     TMOD,#11H
004B,75 8C FE,,        MOV     TH0,#0FEH
004E,75 8A 0C,,        MOV     TL0,#0CH
0051,75 8D 3C,,        MOV     TH1,#3CH
0054,75 8B B0,,        MOV     TL1,#0B0H
0057,D2 92,,        SETB    STOP    ;允许报警复位按钮输入
0059,20 92 FD,loop,loop:   JB      STOP,LOOP
005C,12 00 A4,,        LCALL   DELAY   ;消除开关抖动
005F,20 92 F7,,        JB      STOP,LOOP
0062,C2 8C,,        CLR     TR0
0064,C2 8E,,        CLR     TR1
0066,D2 90,,        SETB    LED     ;熄灭LED
0068,C2 91,,        CLR     SPEAKER
006A,80 ED,,        SJMP    LOOP
006C,D2 8C,ALARM,ALARM:  SETB    TR0
006E,D2 8E,,        SETB    TR1
0070,32,,        RETI
0071,C2 8C,T0S,T0S:    CLR     TR0
0073,20 00 08,,        JB      HISOUND,T0S1
0076,75 8C FC,,        MOV     TH0,#0FCH
0079,75 8A 18,,        MOV     TL0,#18H
007C,80 06,,        SJMP    T0S2
007E,75 8C FE,T0S1,T0S1:   MOV     TH0,#0FEH
0081,75 8A 0C,,        MOV     TL0,#0CH
0084,D2 8C,T0S2,T0S2:   SETB    TR0
0086,B2 91,,        CPL     SPEAKER
0088,32,,        RETI
0089,C0 D0,T1S,T1S:    PUSH    PSW
008B,D2 D3,,        SETB    RS0
008D,C2 D4,,        CLR     RS1
008F,C2 8E,,        CLR     TR1
0091,75 8D 3C,,        MOV     TH1,#3CH
0094,75 8B B0,,        MOV     TL1,#0B0H
0097,D2 8E,,        SETB    TR1
0099,DA 06,,        DJNZ    R2,T1S1
009B,7A 0A,,        MOV     R2,#10
009D,B2 00,,        CPL     HISOUND
009F,B2 90,,        CPL     LED
00A1,D0 D0,T1S1,T1S1:   POP     PSW
00A3,32,,        RETI
00A4,7E 14,DELAY,DELAY:  MOV     R6,#20
00A6,7F FA,L1,L1:     MOV     R7,#250
00A8,00,L2,L2:     NOP
00A9,00,,        NOP
00AA,DF FC,,        DJNZ    R7,L2
00AC,DE F8,,        DJNZ    R6,L1
00AE,22,,        RET
000E,,,        END