單片機(jī)課程設(shè)計(jì)定時(shí)鬧鐘-資料下載頁(yè)
2025-06-26 12:47本頁(yè)面
【正文】 MOV C, JNC STOP3 LJMP LOOP DELAY1: MOV R4,14H 。時(shí)間延時(shí) DL001: MOV R5,0FFH DL111: DJNZ R5,DL111 DJNZ R4,DL001 RET 。時(shí)間運(yùn)行程序 TIME: PUSH ACC 。現(xiàn)場(chǎng)保護(hù) PUSH PSW MOV TH0,03CH 。賦初值 MOV TL0,0B0H DJNZ R2,RET0 MOV R2,14H MOV A,20H CLR C INC A 。秒鐘自加1 CJNE A,3CH,GO1 。判斷秒鐘是否到60秒？ MOV 20H,0 。到60秒復(fù)位 MOV 30H,0 MOV 31H,0 MOV A,21H INC A 。分鐘自加1 CJNE A,3CH,GO2 。判斷分鐘是否到60分？ MOV 21H,0H 。到60分復(fù)位 MOV 32H,0 MOV 33H,0 MOV A,22H INC A 。時(shí)鐘自加1 CJNE A,18H,GO3 。判斷時(shí)鐘是否到24時(shí)？ MOV 22H,00H 。到24時(shí)復(fù)位 MOV 34H,0 MOV 35H,0 AJMP RET0 GO1: MOV 20H,A MOV B,0AH DIV AB MOV 31H,A MOV 30H,B AJMP RET0 GO2: MOV 21H,A MOV B,0AH DIV AB MOV 33H,A MOV 32H,B AJMP RET0 GO3: MOV 22H,A MOV B,0AH DIV AB MOV 35H,A MOV 34H,B AJMP RET0 RET0: POP PSW ?；謴?fù)現(xiàn)場(chǎng) POP ACC RETI 。運(yùn)行部分 DISPLAY1: MOV R0,30H MOV R3,0FEH MOV A,R3 PLAY1: MOV P2,A MOV A,@R0 MOV DPTR,DSEG1 。表首地址送DPTR MOVC A,@A+DPTR MOV P0,A LCALL DL1 MOV P2,0FFH 。送高電平到P2 MOV A,R3 RL A 。 JNB ,LD1 INC R0 MOV R3,A LJMP PLAY1 。調(diào)用查表程序 LD1: RET DISPLAY2: PUSH ACC ?，F(xiàn)場(chǎng)保護(hù) PUSH PSW MOV R0,36H MOV R3,0FBH MOV A,R3 PLAY2: MOV P2,A MOV A,@R0 MOV DPTR,DSEG1 。表首地址送DPTR MOVC A,@A+DPTR 。查ASCII特碼 MOV P0,A 。查表結(jié)果送A LCALL DL1 MOV P2,0FFH 。送高電平到P2 MOV A,R3 RL A JNB ,LD2 INC R0 MOV R3,A LJMP PLAY2 LD2: POP PSW ?；謴?fù)現(xiàn)場(chǎng) POP ACC RET 。延時(shí)時(shí)間 DL1: MOV R7,02H 。延時(shí)時(shí)間 DL: MOV R6,0200H DL6: DJNZ R6,$ DJNZ R7,DL RET DSEG1:DB 3FH,06H,5BH,4FH,66H DB 6DH,7DH,07H,7FH,6FH END附2 系統(tǒng)總體電路圖圖7 系統(tǒng)總體電路圖指導(dǎo)教師評(píng) 語(yǔ)課程設(shè)計(jì)成 績(jī)指導(dǎo)教師簽 字年 月 日
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