【導讀】專用時鐘芯片DS1302，并會用DS1302芯片開發(fā)時鐘模塊，應用到其他系統(tǒng)中去。軟件調(diào)試程序和仿真.通過實驗提高焊接、布局、電路檢查能力；進一步熟悉和掌握單片機的結(jié)構(gòu)及工作原理。通過實際程序設計和調(diào)試，逐步掌握模塊化程序設計方法和調(diào)試技術(shù)。統(tǒng)的全過程，為今后從事相應打下基礎。時能標明是否為閏年。盤接口模塊共4個模塊組成，電路系統(tǒng)構(gòu)成框圖如圖L1所示。采用DSl302作為主要計時芯片，可以做到計時準確。更重要的是，DSl302可以。模塊采用普通的共陽LED數(shù)碼管，鍵輸入采用查詢法實現(xiàn)調(diào)整功能。顯示電路及鍵掃描電路組成。天的月利月末的日期自動進行調(diào)整，還包括閏年校正的功能。采用三線接口與cPu進行同步通信，并可采用突發(fā)方式一。時，才能將RsT置為高電平。在此方式下，位5是AM／PM

　　

【正文】 MOV R3,01H AJMP NEW NEW2: MOV R2,A MOV A,R3 CJNE A,0FFH,GGG4 MOV A,R2 MOV R3,A MOV R2,0FFH GGG4: AJMP NEW OLD: MOV A,YEAR DEC A MOV R0,A LCALL CHECKMONTH MOV A,R2 CLR C SUBB A,29 MOV ,C MOV R6,A MOV A,R5 JB ,AAA MOV A,R2 CLR C SUBB A,30 MOV ,C MOV R6,A AAA: MOV A,R6 CJNE A,00H,BBB MOV 56H,29H MOV A,R5 JB ,CCC MOV 56H,30H CCC: MOV 57H,11H LJMP S_PLAY BBB: JNB ,DDD MOV A,29 CLR C SUBB A,R2 MOV R4,A MOV A,R5 JB ,EEE MOV A,30 CLR C SUBB A,R2 MOV R4,A EEE: MOV A,R4 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,12H LJMP S_PLAY DDD: MOV A,29 CLR C SUBB A,R6 MOV R1,A MOV A,R5 JB ,FFF MOV A,30 CLR C SUBB A,R6 MOV R1,A FFF: MOV A,R1 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,11H LJMP S_PLAY NEW: NOP M1: MOV A,R2。 CLR C SUBB A,29 MOV R1,A MOV A,R6 JB ,SM11 MOV A,R2 CLR C SUBB A,30 MOV R1,A SM11: JC SM12 MOV A,R1 MOV R2,A AJMP M2 SM12: CJNE R3,00H,M13 LJMP Y1 M13: MOV A,R2 ADD A,R3 MOV R2,A MOV R3,00H AJMP M1 M2: CLR C MOV A,R2 SUBB A,29 MOV R1,A MOV A,R6 JB , M21 MOV A,R2 CLR C SUBB A,30 MOV R1,A M21: JC M22 MOV A,R1 MOV R2,A AJMP MM2 M22: CJNE R3,00H,M23 LJMP Y2 M23: MOV A,R2 ADD A,R3 MOV R2,A MOV R3,00H AJMP M2 MM2: LCALL CHECKRE CJNE A,02H,M3 RM2: MOV A,R4 ANL A,0FH JNZ RM21 MOV A,R2 CLR C SUBB A,30 MOV R1,A AJMP RM22 RM21: MOV A,R2 CLR C SUBB A,29 MOV R1,A RM22: JC RM23 MOV A,R1 MOV R2,A AJMP M3 RM23: CJNE R3,00H,RM24 LJMP RY2 RM24: MOV A,R2 ADD A,R3 MOV R3,00H AJMP RM2 M3: MOV A,R2 CLR C SUBB A,29 MOV R1,A MOV A,R6 JB ,M31 CLR C MOV A,R2 SUBB A,30 MOV R1,A M31: JC M32 MOV A,R1 MOV R2,A AJMP MM3 M32: CJNE R3,00H,M33 LJMP Y3 M33: MOV A,R2 ADD A,R3 MOV R2,A MOV R3,00H AJMP M3 MM3: LCALL CHECKRE CJNE A,03H,M4 RM3: MOV A,R4 ANL A,0FH JNZ RM31 MOV A,R2 CLR C SUBB A,30 MOV R1,A AJMP RM32 RM31: MOV A,R2 CLR C SUBB A,29 MOV R1,A RM32: JC RM33 MOV A,R1 MOV R2,A AJMP M4 RM33: CJNE R3,00H,RM34 LJMP RY3 RM34: MOV A,R2 ADD A,R3 MOV R2,A MOV R3,00H AJMP RM3 M4: MOV A,R2 CLR C SUBB A,29 MOV R1,A MOV A,R6 JB ,M41 CLR C MOV A,R2 SUBB A,30 MOV R1,A M41: JC M42 MOV A,R1 MOV R2,A AJMP MM4 M42: CJNE R3,00H,M43 LJMP Y4 M43: MOV A,R2 ADD A,R3 MOV R2,A MOV R3,00H AJMP M4 MM4: LCALL CHECKRE CJNE A,04H,M5 RM4: MOV A,R4 ANL A,0FH JNZ RM41 MOV A,R2 CLR C SUBB A,30 MOV R1,A AJMP RM42 RM41: MOV A,R2 CLR C SUBB A,29 MOV R1,A RM42: JC RM43 MOV A,R1 MOV R2,A AJMP M5 RM43: CJNE R3,00H,RM44 LJMP RY4 RM44: MOV A,R2 ADD A,R3 MOV R2,A MOV R3,00H AJMP RM4 M5: MOV A,R2 CLR C SUBB A,29 MOV R1,A MOV A,R6 JB ,M51 MOV A,R2 CLR C SUBB A,30 MOV R1,A M51: JC M52 MOV A,R1 MOV R2,A AJMP MM5 M52: CJNE R3,00H,M53 LJMP Y5 M53: MOV A,R2 ADD A,R3 MOV R2,A MOV R3,00H LJMP M5 MM5: LCALL CHECKRE CJNE A,05H,M6 RM5: MOV A,R4 ANL A,0FH JNZ RM51 MOV A,R2 CLR C SUBB A,30 MOV R1,A