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/*-------------------------------------------------------------------------------------------*/
/*-----------按鍵定義-----------*/
STRT EQU P1.6 ;啟動
STP EQU P1.7 ;停止
CLRR EQU P3.0 ;復(fù)位
SELTS EQU P3.6 ;時(shí)鐘
SELTH EQU P3.7 ;秒表
SECL EQU P1.0 ;秒個(gè)位
SECH EQU P1.1 ;秒十位
MINL EQU P1.2 ;分
MINH EQU P1.3 ;
HOURL EQU P1.4 ;時(shí)
HOURH EQU P1.5 ;
/*-------------------------------------------------------------------------------------------*/
ORG 0000H
SJMP MAIN
ORG 000BH ;T0定時(shí)器入口
AJMP T0INT0
ORG 001BH ;T1定時(shí)器入口
AJMP T1INT1
ORG 30H
/*-------------------------------------------------------------------------------------------*/
/*-----------初始化函數(shù)-----------*/
MAIN:
MOV SP,#60H
MOV R4,#10 ;100ms;時(shí)鐘
MOV R5,#10 ;100ms;秒表
MOV TMOD,#11H
MOV TL0,#(65535-7986)MOD 256;#9EH ;定時(shí)中斷子程序。重裝定時(shí)常數(shù)
MOV TH0,#(65535-7986)/256;#58H ;10ms
MOV TL1,#(65535-7986)MOD 256;#9EH ;定時(shí)中斷子程序。重裝定時(shí)常數(shù)
MOV TH1,#(65535-7986)/256;#58H ;10ms
/*-------------------------------------------------------------------------------------------*/
/*-----------調(diào)節(jié)按鍵檢測-----------*/
KSL:
LCALL DISP ;秒個(gè)調(diào)整按鍵
JB SECL,KSH ;沒有按下的處理，即SECL為高電平。
LCALL DISP
JNB SECL,$-3 ;消除抖動
AJMP SINCL
KSH: LCALL DISP ;秒10調(diào)整按鍵
JB SECH,KML
LCALL DISP
JNB SECH,$-3
AJMP SINCH
KML: JB MINL,KMH ;分個(gè)調(diào)整按鍵
LCALL DISP
JNB MINL,$-3
AJMP MINCL
KMH: JB MINH,KHL ;分10調(diào)整按鍵
LCALL DISP
JNB MINH,$-3
AJMP MINCH
KHL:
JB HOURL,KHH ;時(shí)個(gè)調(diào)整按鍵
LCALL DISP
JNB HOURL,$-3
AJMP HINCL
KHH: JB HOURH,K1 ;時(shí)10調(diào)整按鍵
LCALL DISP
JNB HOURH,$-3
AJMP HINCH
/*-------------------------------------------------------------------------------------------*/
/*-----------調(diào)節(jié)按鍵處理-----------*/
SINCL: /*秒的數(shù)據(jù)處理*/
INC 20H ;秒個(gè)位的調(diào)整 +1
MOV A,20H
CJNE A,#10,SINC0L ;
MOV 20H,#0 ;滿10的處理
SINC0L: AJMP KSL ;返回KSL按鍵處理
SINCH:
INC 21H
MOV A,21H
CJNE A,#6,SINC0H ;60s
MOV 21H,#0
SINC0H: AJMP KSH
MINCL: /*分的數(shù)據(jù)處理*/
INC 22H ;分調(diào)整
MOV A,22H
CJNE A,#10,MINC0L ;60min
MOV 22H,#0
MINC0L: AJMP KML
MINCH:
INC 23H ;分調(diào)整
MOV A,23H
CJNE A,#6,MINC0H ;60min
MOV 23H,#0
MINC0H: AJMP KMH
HINCL: /*時(shí)的數(shù)據(jù)處理*/
MOV A,25H ;時(shí)調(diào)整
CJNE A,#2,LH1 ;時(shí)的十位不滿2時(shí)的處理
INC 24H ;時(shí) >20h
MOV A,24H
CJNE A,#4,HINC0L ;是否到達(dá)24
MOV 24H,#0 ;時(shí)到24后，數(shù)碼管清零
HINC0L: AJMP KHL
LH1:
INC 24H ;時(shí)<20h
MOV A,24H
CJNE A,#10,HINC0L ;24h
MOV 24H,#0
HINCH:
INC 25H ;時(shí)調(diào)整
MOV A,25H
CJNE A,#3,HINC0H ;24h
MOV 25H,#0
HINC0H: AJMP KHH
/*-------------------------------------------------------------------------------------------*/
/*-----------控制按鍵掃描-----------*/
K1: LCALL DISP ;開始鍵
JB STRT,K2 ;
LCALL DISP
JNB STRT,$-3
AJMP START
K2: JB STP,K3 ;暫停鍵
LCALL DISP
JNB STP,STOP ;消抖處理
K3:
JB CLRR,K4 ;沒有按下，轉(zhuǎn)到K4
LCALL DISP
JNB CLRR,CLEAR ;清零鍵
AJMP KSL
K4:
JB SELTS,K5 ;沒有按下，返回?cái)?shù)碼按鍵監(jiān)測
LCALL DISP
JNB SELTS,SELTHC ;模式切換
K5:
JB SELTH,TOKSL ;沒有按下，返回?cái)?shù)碼按鍵監(jiān)測
LCALL DISP
JNB SELTH,SELTSC ;模式切換
AJMP KSL
TOKSL:
AJMP KSL
/*-------------------------------------------------------------------------------------------*/
/*-----------控制按鍵處理-----------*/
START:
;打開中斷總開關(guān)
CPL EA
AJMP K1
STOP:
CLR TR0 ;暫停
CLR TR1
SETB P1.6;停止報(bào)警
AJMP K2
CLEAR:
CLR TR0 ;清零
CLR TR1
MOV A,#0
MOV 20H,A
MOV 21H,A
MOV 22H,A
MOV 23H,A
MOV 24H,A
MOV 25H,A
MOV 26H,A
MOV 27H,A
AJMP K3
SELTHC: ;時(shí)鐘模式選擇
SETB TR0
SETB ET0
CLR ET1
CLR TR1
AJMP K4
SELTSC: ;秒表模式選擇
SETB TR1
SETB ET1
SETB P3.1;清除報(bào)警燈
CLR ET0
CLR TR0
AJMP K5
/*-------------------------------------------------------------------------------------------*/
/*---------T0中斷處理---------*/
T0INT0:
MOV TL0,#(65535-7986)MOD 256;#9EH ;定時(shí)中斷子程序。重裝定時(shí)常數(shù)
MOV TH0,#(65535-7986)/256;#58H ;10ms
DJNZ R4,T0INTR ;10msX10=0.1S，未滿20次，跳出中斷子程序
MOV R4,#10
MOV 26H,#76H;最后一位指定顯示H
INC 27H ;1S，秒存儲單元內(nèi)數(shù)+1
MOV A,27H
CJNE A,#10,T0INTR ;未滿10S，跳出中斷，返回顯示。;滿10s，往下執(zhí)行清零處理，十位+1
MOV 27H,#0 ;滿60S,秒單元清零
INC 20H ;1S，秒存儲單元內(nèi)數(shù)+1
MOV A,20H
CJNE A,#10,T0INTR ;未滿10S，跳出中斷，返回顯示。;滿10s，往下執(zhí)行清零處理，十位+1
MOV 20H,#0 ;滿60S,秒單元清零
;秒十位+1
INC 21H ;秒10位
MOV A,21H
CJNE A,#6,T0INTR ;6
MOV 21H,#0
INC 22H ;分個(gè)+1
MOV A,22H
CJNE A,#10,T0INTR
MOV 22H,#0
INC 23H ;分十+1
MOV A,23H
CJNE A,#6,T0INTR
MOV 23H,#0
MOV A,25H
CJNE A,#2,L1 ;時(shí)的十位不滿2時(shí)的處理
;時(shí)的十位滿2的處理
INC 24H
MOV A,24H
CJNE A,#4,T0INTR ;是否到達(dá)24
;時(shí)到24后，數(shù)碼管清零
MOV A,#0
MOV 20H,A
MOV 21H,A
MOV 22H,A
MOV 23H,A
MOV 24H,A
MOV 25H,A
RETI
;子程序
L1: INC 24H
MOV A,24H
CJNE A,#10,T0INTR
MOV 24H,#0 ;時(shí)的個(gè)位清零
INC 25H ;時(shí)的十位+1
MOV A,28H
T0INTR: RETI
/*-------------------------------------------------------------------------------------------*/
/*-----------T1中斷處理-----------*/
T1INT1:
MOV TL1,#(65535-7986)MOD 256;#9EH ;定時(shí)中斷子程序。重裝定時(shí)常數(shù)
MOV TH1,#(65535-7986)/256;#58H ;10ms
DJNZ R5,T0INTR ;不滿10次，跳轉(zhuǎn)
MOV R5,#10
MOV A,27H
CJNE A,#0,TLSL;判斷0.01s是否為0
MOV A,20H
CJNE A,#0,TSL ;判斷秒的個(gè)位是否為0
MOV A,21H
CJNE A,#0,TSH ;判斷秒的十位是否為0
MOV A,22H
CJNE A,#0,TML ;判斷分的個(gè)位是否為0
MOV A,23H
CJNE A,#0,TMH ;判斷分的十位是否為0
MOV A,24H
CJNE A,#0,THL ;判斷時(shí)的個(gè)位是否為0
MOV A,25H
CJNE A,#0,THH ;判斷時(shí)的十位是否為0
CLR P3.1 ;計(jì)時(shí)結(jié)束的標(biāo)志
RETI;返回中斷處
TLSL: ;0.01s不為0，進(jìn)行-1
DEC 27H
MOV 26H,#79H;最后一位指定顯示E
RETI
TSL: ;秒個(gè)位不為0,進(jìn)行-1
DEC 20H
MOV 26H,#79H;最后一位指定顯示E
MOV 27H,#9
RETI
TSH: ;秒十位不為0,進(jìn)行-1，個(gè)位為9
DEC 21H
MOV 26H,#79H;最后一位指定顯示E
MOV 27H,#9
MOV 20H,#9
RETI
TML:
DEC 22H
MOV 26H,#79H;最后一位指定顯示E
MOV 27H,#9
MOV 21H,#5
MOV 20H,#9
RETI
TMH:
DEC 23H
MOV 26H,#79H;最后一位指定顯示E
MOV 27H,#9
MOV 22H,#9
MOV 21H,#5
MOV 20H,#9
RETI
THL:
DEC 24H
MOV 26H,#79H;最后一位指定顯示E
MOV 27H,#9
MOV 23H,#5
MOV 22H,#9
MOV 21H,#5
MOV 20H,#9
RETI
THH:
DEC 25H
MOV 26H,#79H;最后一位指定顯示E
MOV 27H,#9
MOV 24H,#9
MOV 23H,#5
MOV 22H,#9
MOV 21H,#5
MOV 20H,#9
RETI
/*-------------------------------------------------------------------------------------------*/
/*-----------顯示處理-----------*/
DISP:
MOV A,26H
MOV P0,A ;顯示
CLR P2.0
ACALL DLY
SETB P2.0
MOV A,27H ;0.1S
ACALL SEG7
MOV P0,A
CLR P2.1
ACALL DLY
SETB P2.1
MOV A,20H ;秒個(gè)位
ACALL SEG7
MOV P0,A ;顯示秒個(gè)位
SETB P0.7
CLR P2.2
ACALL DLY
SETB P2.2
MOV A,21H ;秒十位
ACALL SEG7
MOV P0,A
CLR P2.3
ACALL DLY
SETB P2.3
MOV A,22H ;分個(gè)位
ACALL SEG7
MOV P0,A
SETB P0.7
CLR P2.4
ACALL DLY
SETB P2.4
MOV A,23H ;分十位
ACALL SEG7
MOV P0,A
CLR P2.5
ACALL DLY
SETB P2.5
MOV A,24H ;時(shí)個(gè)位
ACALL SEG7
MOV P0,A
SETB P0.7
CLR P2.6
ACALL DLY
SETB P2.6
MOV A,25H ;時(shí)十位
ACALL SEG7
MOV P0,A
CLR P2.7
ACALL DLY
SETB P2.7
RET
/*-------------------------------------------------------------------------------------------*/
/*-----------延時(shí)部分-----------*/
DLY10: MOV R3,#30
D0: ACALL DLY
DJNZ R3,D0
RET
DLY: MOV R7,#2
D1: MOV R6,#40
DJNZ R6,$
DJNZ R7,D1
RET
/*-------------------------------------------------------------------------------------------*/
/*-----------數(shù)碼管段值-----------*/
SEG7:
INC A
MOVC A,@A+PC
RET
DB 03FH ;0 共陰
DB 006H ;1
DB 05BH ;2
DB 04FH ;3
DB 066H ;4
DB 06DH ;5
DB 07DH ;6
DB 007H ;7
DB 07FH ;8
DB 06FH ;9
END

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