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單片機課程設(shè)計說明書-基于at89s52單片機的數(shù)字倒計時器設(shè)計-wenkub.com

2024-11-06 17:23 本頁面
   

【正文】 在本次設(shè)計中得到了指導老師鄒老師的大力支持,在此表示感謝! 7 附錄 利用單片機內(nèi)部的定時器溢出中斷來實現(xiàn)定時,設(shè)定某定時器每 100ms 中斷 1次,則 10次的周期為 1s。 單片機課程設(shè)計說明書 6 結(jié)論 單片機的應(yīng)用正在不斷深入人們的生活,同時帶動傳統(tǒng)控制檢測日新月異。一般原則是先靜態(tài)后動態(tài)。調(diào)用消抖程序 MOV C, JC A1 A1: CLR LCALL SETTIME ;調(diào)用設(shè)置現(xiàn)在時間子程序 LJMP LOOP M1: JB K2, M2 LCALL XIAOZHEN2 MOV C, JC A2 A2: CLR LCALL SETTIME ;調(diào)用設(shè)置鬧鐘的程序 單片機課程設(shè)計說明書 LJMP LOOP M2: JB K4, M3 A3: LCALL XIAOZHEN3 MOV C, JC A4 A4: CLR M3: LJMP LOOP SETTIME: LO: LCALL DISPLAY1 JB K2, L1 LCALL XIAOZHEN4 MOV C, JC A5 A5: CLR DEC 22H MOV A, 22H CJNE A, 18H,G012 MOV 22H, 00H MOV 34H, 00H MOV 35H, 00H LJMP L0 L1: JB K3, L2 LCALL XIAOZHEN5 MOV C, JC A6 單片機課程設(shè)計說明書 A6: CLR DEC 21H MOV A, 21H CJNE A, 3CH,G011 MOV 21H, 00H MOV 32H, 00H MOV 33H, 00H LJMP L0 GO11: MOV B, 0AH DIV AB MOV 32H, B MOV 33H, A LJMP L0 GO12: MOV B, 0AH DIV AB MOV 34H, B MOV 35H, A LJMP L0 L2: JB K4, L0 LCALL XIAOZHEN3 MOV C, JC AX AX: CLR RET SETATIME: LCALL DISPLAY2 單片機課程設(shè)計說明書 NO: LCALL DISPLAY2 JB K3, N1 LCALL XIAOZHEN6 MOV C, JC A7 A7: CLR DEC 24H MOV A, 24H CJNE A,24, G022 MOV 24H, 00H MOV 38H, 00H MOV 39H, 00H LJMP N0 N1: JB K1 N2 LCALL XIAOZHEN7 MOV C, JC A8 A8: CLR DEC 23H MOV A, 23H CJNE A,60, G021 MOV 23H, 00H MOV 36H, 00H MOV 37H, 00H LJMP N0 單片機課程設(shè)計說明書 G021: MOV B, 0AH DIV AB MOV 36H, B MOV 37H, A LJMP N0 G022: MOV B, 0AH DIV AB MOV 38H, B MOV 39H, A LJMP N0 N2: JB K4 N0 LCALL XIAOZHEN3 MOV C, JC A9 A9: CLR RET TIMEPRO: MOV A, 21H MOV B, 23H CJNE A, B, BK MOV A, 22H MOV B, 24H CJNE A, B, BK SETB MOV C, JC XX 單片機課程設(shè)計說明書 XX: LCALL TIMEOUT BK: RET TIMEOUT: X1: LCALL BZ LCALL DISPLAY2 CLR JB K4, X1 RET BZ: CLR MOV R7, 250 T2: MOV R6, 124 T3: DJNZ R6, T3 DJNZ R7, T2 JB K4, XY LCALL XIAOZHEN3 MOV C, JC XY1 XY: RET XY1: LJMP LOOP XIAOZHEN1: LCALL DISPLAY1 JB K1, XIAOZHEN1 MOV C, K1 LCALL JC XIAOZHEN1 LCALL DELAY MOV C, K1 單片機課程設(shè)計說明書 JC XIAOZHEN1 STOP1: MOV C, K1 JNC STOP1 LCALL DELAY MOV C, K1 JNC STOP1 SETB RET XIAOZHEN2: LCALL DISPLAY2 JB K2, XIAOZHEN2 MOV C, K2 JC XIAOZHEN2 STOP2: MOV C, K2 JNC STOP2 LCALL DELAY MOV C, K2 JNC STOP2 SETB RET XIAOZHEN3: LCALL DISPLAY1 JB K4, XIAOZHEN3 MOV C, K4 JC XIAOZHEN3 LCALL DELAY MOV C, K4 單片機課程設(shè)計說明書 JC XIAOZHEN3 STOP3: MOV C, K4 JNC
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