51芯片闹钟.doc

是51芯片。你参考看看！ ORG 0000H ;程序入口地址 AJMP START ORG 000BH ;定时器0中断入口地址 LJMP INT_0 ORG 001BH ;定时器1中断入口地址 LJMP INT_1 ORG 0100H START:LCALL QING ;初始化 QING: ;初始化 MOV 30H,#0 ;时十位寄存器清零 MOV 31H,#0 ;时个位寄存器清零 MOV 32H,#0 ;分十位寄存器清零 MOV 33H,#0 ;分个位寄存器清零 MOV 34H,#0 ;秒十位寄存器清零 MOV 35H,#0 ;秒个位寄存器清零 MOV 36H,#0 ;秒 MOV 37H,#0 ;分 MOV 38H,#0 ;时 MOV 39H,#20 MOV 40H,#0 MOV 41H,#0 MOV TMOD,#11H MOV TH0,#3CH MOV TL0,#0B0H ;赋初值，定时50ms MOV TH1,#09EH MOV TL1,#0D0H SETB TR0 ;开启定时器0 SETB TR1 SETB EA ;开中断总开关 SETB ET0 ;定时器0中断允许位 SETB ET1 SETB PT0 CLR PT1 MAIN:MOV P3,#0FFH ;开启按键 JNB P3.3,KEY ;扫描按键 AJMP MAIN KEY:JNB P3.3,KEY ;控制时钟 MOV 41H,#1 CLR TR0 ;关“T0“中断 LJMP KEY1 DISPLAY: ;数码管 MOV DPTR,#TABLE MOV P2,#80H MOV A,35H ; 显示秒个位 MOVC A,A+DPTR MOV P0,A ACALL DELAY MOV P2,#40H MOV A,34H ;显示秒十位 MOVC A,A+DPTR MOV P0,A ACALL DELAY MOV P2,#20H MOV A,33H ; 显示分个位 MOVC A,A+DPTR MOV P0,A ACALL DELAY MOV P2,#10H MOV A,32H ; 显示分十位 MOVC A,A+DPTR MOV P0,A ACALL DELAY MOV P2,#20H MOV P0,#7FH ;显示小数点 ACALL DELAY JNB P3.2,LOOP ;转为” 时分“显示 LJMP EXIT LOOP:JNB P3.2,LOOP MOV 40H,#1 AJMP EXIT DELAY: MOV R3,#50 ;延时约为50MS D0: MOV R2,#50 DJNZ R2,$ DJNZ R3,D0 RET DISPLAY_1: MOV P2,#80H MOV A,33H ; 显示分个位 MOVC A,A+DPTR MOV P0,A ACALL DELAY MOV P2,#40H MOV A,32H ; 显示分十位 MOVC A,A+DPTR MOV P0,A ACALL DELAY MOV P2,#20H MOV A,31H ;显示时个位 MOVC A,A+DPTR MOV P0,A ACALL DELAY MOV P2,#10H MOV A,30H ; 显示时十位 MOVC A,A+DPTR MOV P0,A ACALL DELAY MOV P2,#20H MOV P0,#7FH ;显示小数点 ACALL DELAY JNB P3.2,LOOP1 ;转为”分秒“显示 LJMP EXIT LOOP1:JNB P3.2,LOOP1 MOV 40H,#0 LJMP EXIT K3:JNB P3.4,K3 KEY3:JNB P3.5,K2_0 ;调整”时“ JNB P3.3,SHI_0 AJMP KEY3 SHI_0:JNB P3.3,SHI_0 SHI:JNB P3.4,JIA_SHI ;”时“ JNB P3.5,JIAN_SHI JNB P3.3,KEY0 AJMP SHI JIA_SHI:JNB P3.4,JIA_SHI ; 加时 INC 36H MOV R0,36H CJNE R0,#24,SHI MOV 36H,#0 AJMP SHIJIAN_SHI:JNB P3.5,JIAN_SHI ; 减时 DEC 36H MOV R0,36H CJNE R0,#-1,SHI MOV 36H,#23 AJMP SHI KEY0: JNB P3.3,KEY0 ;转为时钟 MOV 41H,#0 MOV TH0,#3CH MOV TL0,#0B4H SETB TR0 ;开”T0” 中断 AJMP MAIN K2: JNB P3.4,K2 K2_0: JNB P3.5,K2_0 KEY2: JNB P3.4,K3 ;调整”分“ JNB P3.5,K1 JNB P3.3,F_0 AJMP KEY2 K1: JNB P3.5,K1 KEY1: ;调整”秒“ JNB P3.4,K2 JNB P3.3,S_0 AJMP KEY1 S_0: JNB P3.3,S_0 S: JNB P3.3,KEY0 ; ”秒“ JNB P3.4,JIA_S JNB P3.5,JIAN_S AJMP S JIA_S:JNB P3.4,JIA_S ;加秒 INC 38H MOV R0,38H CJNE R0,#61,S MOV 38H,#0 AJMP S JIAN_S:JNB P3.5,JIAN_S ;减秒 DEC 38H MOV R0,38H CJNE R0,#-1,S MOV 38H,#59 AJMP S F_0:JNB P3.3,F_0 F: JNB P3.4,JIA_F ; ”分“ JNB P3.5,JIAN_F JNB P3.3,KEY0 AJMP F JIA_F:JNB P3.4,JIA_F ;加 ”分“ INC 37H MOV R0,37H CJNE R0,#60,F MOV 37H,#0 AJMP F JIAN_F:JNB P3.5,JIAN_F ;减 ”分“ DEC 37H MOV R0,37H CJNE R0,#-1,F MOV 37H,#59 AJMP F INT_0: ;中断0初始化 MOV TH0,#4BH MOV TL0,#0EAH DJNZ 39H,EXIT MOV 39H,#20 MOV A,41H ; 41H控制是否计时 CJNE A,#1,INT_01 INT_01: INC 38H MOV A,38H CJNE A,#60,EXIT MOV 38H,#0 INC 37H MOV A,37H CJNE A,#60,EXIT MOV 37H,#0 INC 36H MOV A,36H CJNE A,#24,EXIT MOV 36H,#0 INT_1: MOV TH1,#9EH ;定时1中断 MOV TL1,#0D0H INT_13: ;数据转换 “时”“分”“秒” MOV A,36H MOV B,#10 DIV AB MOV 30H,A MOV 31H,B MOV A,37H MOV B,#10 DIV AB MOV 32H,A MOV 33H,B MOV A,38H MOV B,#10 DIV AB MOV 34H,A MOV 35H,B ACA