ORG 0000H
LJMP MAIN
ORG000BH
LJMP T00
//ORG001BH
//LJMP T11
ORG 0030H
//=======程序初始化=============================
MAIN:
MOV TMOD,#11H
MOV TH0,#3CH
MOV TL0,#0B0H
MOV TH1,#0F0H
MOV TL1,#0B0H
SETB EA
SETB ET0
// SETB ET1
SETB TR0
// SETB TR1
CLR P3.4
MOV R7,#00H 秒值
MOV 30H,#00H 秒个位值
MOV 31H,#00H 秒十位值
MOV 32H,#00H 分个位
MOV 33H,#00H 分十位
MOV 34H,#00H 时个位
MOV 35H,#00H 时十位
MOV 44H,#00H 秒表毫秒十位
MOV 45H,#00H 秒表秒毫秒百位
MOV 46H,#00H 秒表秒个位
MOV 47H,#00H 秒表秒十位
MOV 48H,#00H 秒表分个位
MOV 49H,#00H 秒表分十位
MOV P2,#0F0H P2口按键初始化
MOV 40H,#01H 数码管休眠值 /流水灯/秒表开关数
MOV 41H,#08H 流水灯循环值
MOV 42H,#00H 秒表暂停
// ACALL T11
//-----------------------------------------------
MAIN1:
MOV P0,#0FFH
MOV P1,#0FFH
MOV R0,40H
CJNE R0,#01H,ACL1
ACALL MAIN2时钟显示
ACL1:CJNE R0,#02H,ACL2
ACALL MAIN3秒表
ACL2:CJNE R0,#03H,ACL3
ACALL LED流水灯
ACL3:ACALL KEY 按键扫描
// ACALL BAO定时报警
LJMP MAIN1
//=======报警子程序============================
BAO:MOV R4,33H
CJNE R4,#03H,YY1
CLR P3.2
ACALL KEY
LJMP YY2
YY1:CJNE R4,#05H,YY2
SETB P3.2
ACALL KEY
YY2:RET
//======时钟扫描子程序=======================
MAIN2:
MOV A,30H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.0
ACALL DELAY
MOV A,31H
MOV DPTR,#TAB
MOVC A,@A+ DPTR
MOV P0,A
CLR P1.1
SETB P1.0
ACALL DELAY
MOV A,32H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.2
SETB P1.1
ACALL DELAY
MOV A,33H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.3
SETB P1.2
ACALL DELAY
MOV A,34H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.4
SETB P1.3
ACALL DELAY
MOV A,35H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.5
SETB P1.4
ACALL DELAY
MOV P0,#7FH
MOV P1,#0EBH
ACALL DELAY
MOV P1,#0FFH
RET
//========秒表扫描子程序=========================
MAIN3:
MOV A,44H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.0
ACALL DELAY
MOV A,45H
MOV DPTR,#TAB
MOVC A,@A+ DPTR
MOV P0,A
CLR P1.1
SETB P1.0
ACALL DELAY
MOV A,46H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.2
SETB P1.1
ACALL DELAY
MOV A,47H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.3
SETB P1.2
ACALL DELAY
MOV A,48H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.4
SETB P1.3
ACALL DELAY
MOV A,49H
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P0,A
CLR P1.5
SETB P1.4
ACALL DELAY
MOV P0,#7FH
MOV P1,#0EBH
ACALL DELAY
MOV P1,#0FFH
RET
//=======定时器T0中断服务========================
T00:MOV TH0,#0D8H
MOV TL0,#0F0H
INC R7
CJNE R7,#64H,AA
MOV R7,#00H
//-------时钟跑值--------------------------------
TK1:INC 30H 每秒钟秒个位增一
MOV R6,30H
CJNE R6,#0AH,AA
MOV 30H,#00H
TK2:INC 31H
MOV R6,31H
CJNE R6,#06H,AA
MOV 31H,#00H
TK3:INC 32H
MOVR6,32H
CJNE R6,#0AH,AA
MOV32H,#00H
TK4:INC33H
MOVR6,33H
CJNE R6,#06H,AA
MOV33H,#00H
TK5:INC34H
MOVR5,34H
MOVR6,35H
CJNE R5,#04H,TK6
CJNE R6,#02H,TK6
MOV34H,#00H
MOV35H,#00H
TK6:CJNE R5,#0AH,AA
MOV34H,#00H
INC35H
//-------秒表跑值----------------------
AA:
MOV R5,42H
CJNE R5,#01H,TK7
INC 44H
TK7:MOV R5,44H
CJNE R5,#0AH,AA1
MOV 44H,#00H
INC 45H
MOV R5,45H
CJNE R5,#0AH,AA1
MOV 45H,#00H
INC 46H
MOV R5,46H
CJNE R5,#0AH,AA1
MOV 46H,#00H
INC 47H
MOV R5,47H
CJNE R5,#06H,AA1
MOV 47H,#00H
INC 48H
MOV R5,48H
CJNE R5,#0AH,AA1
MOV 48H,#00H
INC 49H
MOV R5,49H
CJNE R5,#06H,AA1
MOV 49H,#00H
AA1:RETI
//====定时器T1中断服务子程序====================
//T11:MOV TH1,#0F0H
// MOV TL1,#0B0H
// RETI
//******定时时间调整子程序*************************//
TBAO:
MOV 50H,#00H
MOV 51H,#00H
MOV 52H,#00H
MOV 53H,#00H
MOV 54H,#00H
MOV 55H,#00H
MOV R3,50H
DJNZ 30H,RET1
RET1: RET
//======键盘扫描子程序==========================
KEY:MOV P2,#0F0H
MOV R3,P2
CJNE R3,#0F0H,KE0
LJMP KK13
KE0:CJNE R3,#0E0H,KE1 P2.4行
MOV P2,#0EFH
JB P2.3,KK1 //用作调定时时间 K13 秒个位增一
ACALL DELAY1
ACALL TK1
KK1:JB P2.2,KK2 K14 秒十增一
ACALL DELAY1
ACALL TK2
KK2:JB P2.1,KK3 K15 分个位增一
ACALL DELAY1
ACALL TK3
KK3:JB P2.0,KE1 K16 分十位增一
ACALL DELAY1
ACALL TK4
KE1:MOV P2,#0DFH P2.5行
JB P2.3,KK4 K9 时个位增一
ACALL DELAY1
ACALL TK5
KK4:JB P2.2,KK5 K10 时十位增一
ACALL DELAY1
INC 35H
MOV R3,35H
CJNE R3,#03H,HH0
MOV 35H,#00H
LJMP KK5
HH0:CJNE R3,#02H,HH1
LJMP KK5
HH1:CJNE R3,#01H,HH2
LJMP KK5
HH2:MOV 35H,#00H
KK5:JB P2.1,KK6
ACALL DELAY1 K11开/关蜂鸣器
CPL P3.2
KK6:JB P2.0,KE2 K12 秒表暂停
MOV 42H,#00H
KE2:MOV P2,#0BFH P.6行
JB P2.3,KK7K5 时钟暂停/取消暂停
ACALL DELAY1
CPL ET0
KK7:JB P2.2,KK8 K6 显示/休眠/流水灯
ACALL DELAY2
INC 40H
MOV R3,40H
CJNE R3,#04H,KK8
MOV 40H,#01H
KK8:JB P2.1,KK9
// ACALL DELAY3 K7 秒表清0
MOV 44H,#00H
MOV 45H,#00H
MOV 46H,#00H
MOV 47H,#00H
MOV 48H,#00H
MOV 49H,#00H
KK9:JB P2.0,KE3 K8 秒表开始跑
MOV 42H,#01H
KE3:MOV P2,#7FH P2.7行
JB P2.3,KK10 K1 秒十位减一
ACALL DELAY1
MOV R3,31H
CJNE R3,#00H,JA1
LJMP KK10
JA1:DEC 31H
KK10:JB P2.2,KK11K2分个位减一
ACALL DELAY1
MOV R3,32H
CJNE R3,#00H,JA2
LJMP KK11
JA2: DEC 32H
KK11:JB P2.1,KK12 K3 分十位减一
ACALL DELAY1
MOV R3,33H
CJNE R3,#00H,JA3
LJMP KK12
JA3:DEC 33H
KK12:JB P2.0,KK13 K4 时个位减一
ACALL DELAY1
MOV R3,34H
CJNE R3,#00H,JA4
LJMP KK13
JA4:DEC 34H
KK13:RET
//=====流水灯子程序===========================
LED: MOV A,#0feH
MOV 41H,#08H
MOV P0,#0FFH
LED1:
MOV P1,A
MOV R3,#100
D0: ACALL DELAY
DJNZ R3,D0
MOV R3,41H
DJNZ R3,AAA
LJMP BB
AAA:RL A
MOV 41H,R3
ACALL KEY
LJMP LED1
BB:
MOV 41H,#07H
CC: MOV P1,A
MOV R3,#30
D1: ACALL DELAY
DJNZ R3,D1
MOV R3,41H
DJNZ R3,DD
LJMP LED0
DD:RR A
MOV 41H,R3
ACALL KEY
LJMP CC
LED0:RET
//=====延时子程序==============================
DELAY:MOV R1,#250
DEL1:NOP
NOP
NOP
NOP
DJNZ R1,DEL1
RET
//====调用时钟显示作延时========================
DELAY1:MOV R2,#20
DELA3: ACALL MAIN2
DJNZ R2,DELA3
RET
//====调用秒表显示作延时========================
DELAY3:MOV R2,#20
DELA5:ACALL MAIN3
DJNZ R2,DELA5
RET
//====调用延时子程序作延时======================
DELAY2:MOV R2,#100
DELA4:ACALL DELAY
DJNZ R2,DELA4
RET
//======共阳数码管段码表=================================
TAB:DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H,87H
END
源程序如下: ORG 0000H 程序开始入口LJMP START
ORG 0003H 外中断0中断程序入口
RETI
ORG 000BH 定时器T0中断程序入口
LJMP INTT0 跳至INTTO执行
ORG 0013H 外中断1中断程序入口
RETI
ORG 001BH 定时器T1中断程序入口
LJMP INTT1
ORG 0023H 串行中断程序入口地址
RETI
---------------主程序----------------------
START:MOV R0,#70H 70给R0,清70-7FH显示内存
MOV R7,#0FH
CLEARDISP:MOV @R0,#00H0给R0中的数为地址的内存中存放(70H)
INC R0
DJNZR7,CLEARDISP
MOV 78H,#2 默认时间为12:00,闹钟5:00
MOV 79H,#1
MOV 74H,#2 防止上电时数码管显示00小时
MOV 75H,#1
MOV 66H,#1 中断退出时66H为1时,分、时计时单元数据移入显存标志
MOV 68H,#1 上电默认闹钟开状态
MOV 7DH,#6 闹钟时十位
MOV 7CH,#3
MOV 69H,#0
MOV 7AH,#0AH放入"熄灭符"数据
MOV TMOD,#11H 设T0、T1为16位定时器
MOV TL0,#0B0H 50MS定时初值(T0计时用)
MOV TH0,#3CH
SETBEA 总中断开放
SETBET0 允许T0中断
SETBTR0 T0定时器开始计时
MOV R4,#14H 1秒定时用初值(50MS×20)
START1:LCALL DISPLAY 显示子程序
LCALL BEEP闹钟查询
JNB P1.7,SETTIMEP1.7口为0时转时间调整程序
JMP START1 P1.7口为1时跳回START1
-----------------------时间闹钟调整系统--------------------------
NFLAG:MOV A,68H 设置闹钟开关状态
CJNE A,#1,BEE68
MOV 68H,#0
JMP E6
BEE68:MOV 68H,#1
E6:MOV 66H,#8 中断退出66H不为1时分、时计时单元数据移入显存标志
MOV 72H,7BH
MOV 73H,7CH
MOV 74H,7DH
MOV 75H,7EH
LCALLDDL
LCALLDDL
MOV 72H,68H
MOV 73H,69H
MOV 74H,7AH
MOV 75H,7AH
LCALLDDL
LCALLDDL
MOV 66H,#1
LJMP START1
SETTIME:LCALLDDL
JB P1.7,NFLAG 键按下时间小于1秒,设置闹钟开关状态并查看闹钟时间,不关走时,确保准确,大于1秒调时
MOV TL1,#0B0H T1闪烁定时初值
MOV TH1,#3CH
MOV R2,#06H进入调时状态,赋闪烁定时初值
MOV 66H,#8 调闹钟时保持走时,关闭时钟显示数据
SETB ET1允许T1中断
SETB TR1开启定时器T1
SET1:LCALLDISPLAY调用显示,防止键按下无显示
JNB P1.7,SET1 P1.7口为0等待键释放
MOV R5,#00H清设置类型闪烁标志
SETN1:INC R5 闹钟分调整
SET5:LCALLDISPLAY
JB P1.7,SET5
SEETN1:LCALLDDL有键按下大于1秒分时间连续加(0.5秒加1),小于1秒转调时状态
JB P1.7,SET6 键释放查询,键释放自动转调时
MOV R0,#7CH
LCALL ADD1
MOV A,R3
CLR C
CJNEA,#60H,HHN1
HHN1:JCSEETN1
LCALL CLR0
JMP SEETN1
SET6:INC R5 闹钟时调整
SEET6:LCALLDISPLAY
JB P1.7,SEET6
SEETNH1:LCALLDDL
JB P1.7,SETF
MOV R0,#7EH
LCALLADD1
MOV A,R3
CLR C
CJNEA,#24H,HOUU1
HOUU1:JC SEETNH1
LCALL CLR0
JMP SEETNH1
SETF:LCALLDISPLAY
JB P1.7,SETF
LCALLDDL
JNB P1.7,SETOUT 短按调时,长按退出
CLR ET0
CLR TR0
MOV 70H,#00H设定后的时间从00秒开始走时
MOV 71H,#00H
INC R5
SET3:LCALLDISPLAY
JB P1.7,SET3
SETMM:LCALLDDL
JB P1.7,SET4
MOV R0,#77H
LCALL ADD1
MOV A,R3
CLR C
CJNEA,#60H,MMH
MMH:JC SETMM
LCALL CLR0
AJMP SETMM
SET4:INC R5
SEET4:LCALLDISPLAY
JB P1.7,SEET4
SETHH:LCALLDDL
JB P1.7,SETOUT1
MOV R0,#79H
LCALLADD1
MOV A,R3
CLR C
CJNEA,#24H,HOUU
HOUU:JC SETHH
LCALL CLR0
AJMP SETHH
SETOUT1:SETB ET0
SETB TR0 计时开始
SETOUT:MOV R5,#00H 清设置类型闪烁标志
CLRTR1 关闭T1
CLRET1 关T1中断
MOV 66H,#1
SETOUT2:LCALLDISPLAY
JNB P1.7,SETOUT2
LJMPSTART1
--------------------------延时1秒钟-----------------------
DDL:MOV 18H,#36
DDL0:MOV 17H,#239
DDL1:LCALLDISPLAY
DJNZ 17H,DDL1
DJNZ 18H,DDL0
RET
----------------------------T0中断程序------------------------
INTT0: PUSH ACC 打包
PUSH PSW
CLR ET0
CLR TR0
MOV A,#0B7H
ADD A,TL0
MOV TL0,A
MOV A,#3CH
ADDC A,TH0
MOV TH0,A
SETB TR0
DJNZ R4, OUTT0 20次中断未到中断退出
ADDSS: MOV R4,#14H 20次中断到(1秒)重赋初值
MOV R0,#71H 指向秒计时单元(70-71H)
ACALL ADD1 调用加1程序(加1秒 *** 作)
MOV A,R3 秒数据放入A(R3为2位十进制数组合)
CLR C 清进位标志
CJNE A,#60H,ADDMM
ADDMM: JC OUTT01小于60秒退出
ACALL CLR0 等于或大于60秒清0
MOV R0,#77H 指向分计时单元(76H-77H)
ACALL ADD1
MOV A,R3
CLR C
CJNE A,#60H,ADDHH
ADDHH: JC OUTT0
ACALL CLR0
MOV R0,#79H 指向小时计时单元(78H-79H)
ACALL ADD1
MOV A,R3
CLR C
CJNE A,#24H,HOUR
HOUR: JCOUTT0
ACALL CLR0
OUTT0: MOV A,66H 查询标志
CJNE A,#1,OUTT01
MOV 72H,76H 中断退出时将分、时计时单元数据移入对应显示单元
MOV 73H,77H
MOV 74H,78H
MOV 75H,79H
OUTT01:POP PSW 出栈
POP ACC
SETB ET0 开放T0
RETI中断返回
---------------------------加1程序--------------------------
ADD1: MOV A,@R0 取当前计时单元数据到A
DEC R0 指向前一地址
SWAP A A中数据高四位与低四位交换
ORL A,@R0 前一地址中数据放入A中低四位
ADD A,#01H A加1 *** 作
DA A 十进制调整
MOV R3,A 移入R3寄存器
ANL A,#0FH 高四位变0
MOV@R0,A 放回前一地址单元
MOV A,R3 取回R3中暂存数据
INCR0 指向当前地址单元
SWAP A A中数据高四位与低四位交换
ANL A,#0FH 高四位变0
MOV @R0,A 数据放入当削地址单元中
RET
CLR0: CLR C
CLR A 清累加器
MOV @R0,A 清当前地址单元
DEC R0 指向前一地址
MOV @R0,A 前一地址单元清0
RET 子程序返回
-------------------------调时闪烁程序----------------------
INTT1: PUSHACC
PUSHPSW
MOV TL1,#0B0H
MOV TH1,#3CH
DJNZR2,INTT1OUT0.3秒未到退出中断(50MS中断6次)
MOV R2,#06H 重装0.3秒定时用初值
CPL 02H0.3秒定时到对闪烁标志取反
JB 02H,FLASH1 02H位为1时显示单元"熄灭"
MOV A,R5
CJNEA,#01H,NL
JMP NNN1
NL:CJNEA,#02H,NL1
LJMPNNN1
NL1:CJNEA,#03H,NL2
LJMPNLL
NL2:CJNEA,#04H,INTT1OUT
LJMPNLL
NLL:MOV 72H,76H
MOV 73H,77H
MOV 74H,78H
MOV 75H,79H
AJMPINTT1OUT
NNN1:MOV 72H,7BH
MOV 73H,7CH
MOV 74H,7DH
MOV 75H,7EH
INTT1OUT:POP PSW 恢复现场
POP ACC
RETI 中断退出
FLASH1:MOV A,R5
CJNEA,#01H,ML
LJMPMNN1
ML:CJNEA,#02H,ML1
LJMPMNN2
ML1:CJNEA,#03H,MN
LJMPMLL
MN:CJNEA,#04H,INTT1OUT
LJMPMHL
MLL:MOV 72H,7AH
MOV 73H,7AH 显示单元(72-73H),将不显示分数据
MOV 74H,78H
MOV 75H,79H
AJMPINTT1OUT
MHL:MOV 72H,76H
MOV 73H,77H
MOV 74H,7AH 显示单元(74-75H),小时数据将不显示
MOV 75H,7AH
AJMPINTT1OUT
MNN1:MOV 72H,7AH
MOV 73H,7AH 显示单元(72-73H),将不显示闹钟分数据
MOV 74H,7DH
MOV 75H,7EH
AJMPINTT1OUT
MNN2:MOV 72H,7BH
MOV 73H,7CH
MOV 74H,7AH
MOV 75H,7AH 显示单元(74-75H),闹钟小时数据将不显示
AJMPINTT1OUT
-------------------------显示-------------------------------
DISPLAY:MOVDPTR,#DISDATA
MOVA,70H
MOVC A,@A+DPTR
MOVP3,A
CLRP1.0
NOP
NOP
NOP
SETB P1.0
MOVA,71H
MOVC A,@A+DPTR
MOVP3,A
CLRP1.1
NOP
NOP
NOP
SETB P1.1
MOVA,72H
MOVC A,@A+DPTR
MOVP3,A
CLRP1.2
NOP
NOP
NOP
SETB P1.2
MOVA,73H
MOVC A,@A+DPTR
MOVP3,A
CLRP1.3
NOP
NOP
NOP
SETB P1.3
MOVA,74H
MOVC A,@A+DPTR
MOVP3,A
CLRP1.4
NOP
NOP
NOP
SETB P1.4
MOVA,75H
MOVC A,@A+DPTR
MOVP3,A
CLRP1.5
NOP
NOP
NOP
SETB P1.5
RET
BEEP:MOV A,68H 查询标志
CJNE A,#1,BEERE
MOV A,78H 查询闹钟时个位
CJNE A,7DH,BEERE
MOV A,79H 查询闹钟时十位
CJNE A,7EH,BEERE
MOV A,76H 查询闹钟分个位
CJNE A,7BH,BEERE
MOV A,77H 查询闹钟分十位
CJNE A,7CH,BEERE
BB:CLR P1.6
LCALL DDL
SETB P1.6
LCALL DDL
JNB P1.7,BEERR
BEERE:RET
BEERR:SETB P1.6
MOV 68H,#0
LCALL DISPLAY
JNB P1.7,BEERR
JMP BEERE
DISDATA:DB 0C0H,0F9H,64H,70H,59H,52H,42H,0F8H,40H,50H,0FFH 0123456789空白
END
51单片机在数码管上显示的数字钟程序:#include "at89x51.h"
unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00}
unsigned char dispbitcode[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}
unsigned char dispbuf[]={0,0,16,0,0,16,0,0}
unsigned char dispbitcnt
unsigned char second
unsigned char minite
unsigned char hour
unsigned int tcnt
unsigned char mstcnt
unsigned char i,j
void main(void)
{
TMOD=0x02
TH0=0x06
TL0=0x06
TR0=1
ET0=1
EA=1
while(1)
{
if(P0_0==0)
{
for(i=5i>0i--)
for(j=248j>0j--)
if(P0_0==0)
{
second++
if(second==60)
{
second=0
}
dispbuf[0]=second%10
dispbuf[1]=second/10
while(P0_0==0)
}
}
if(P0_1==0)
{
for(i=5i>0i--)
for(j=248j>0j--)
if(P0_1==0)
{
minite++
if(minite==60)
{
minite=0
}
dispbuf[3]=minite%10
dispbuf[4]=minite/10
while(P0_1==0)
}
}
if(P0_2==0)
{
for(i=5i>0i--)
for(j=248j>0j--)
if(P0_2==0)
{
hour++
if(hour==60)
{
hour=0
}
dispbuf[6]=hour%10
dispbuf[7]=hour/10
while(P0_2==0)
}
}
}
}
void t0(void) interrupt 1 using 0
{
mstcnt++
if(mstcnt==8)
{
mstcnt=0
P1=dispcode[dispbuf[dispbitcnt]]
P3=dispbitcode[dispbitcnt]
dispbitcnt++
if(dispbitcnt==8)
{
dispbitcnt=0
}
}
tcnt++
if(tcnt==8)
{
tcnt=0
second++
if(second==60)
{
second=0
minite++
if(minite==60)
{
minite=0
hour++
if(hour==24)
{
hour=0
}
}
}
dispbuf[0]=second%10
dispbuf[1]=second/10
dispbuf[3]=minite%10
dispbuf[4]=minite/10
dispbuf[6]=hour%10
dispbuf[7]=hour/10
}
}
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