基于51單片機和cpld技術(shù)數(shù)字頻率計的設(shè)計(編輯修改稿)
2025-07-25 01:57 本頁面
【文章內(nèi)容簡介】 OV A @RO ADD A,0DH ；設(shè)置偏移值 MOVC A,@A+PC MOV SBUF,A ；啟動發(fā)送WAIT: JNB TI,WAIT ；判斷1幀數(shù)據(jù)是否發(fā)送完畢 CLR TI INC RO DJNZ R7,SEND ；判斷數(shù)據(jù)是否發(fā)送完畢 CLR ；關(guān)顯示控制 RETTAB: DB 0C0H,0F9H,0A4H,0B0H,99H, ；0，1，2，3，4 DB 92H,82H,0F8H,80H,98H, ；5，6，7，8，9 DB 88H,83H,0C6H,0A1H,86H,8EH, ；A，B，C，D，E，F(xiàn) DB 7FH,0FFH,0C6,8CH,0C1H, ；.，暗，C，P，U DB 0CEH,86H,88H,0A1H,91H ；R，E，A，D，Y DB 86H，0C8H，0F8H，86H，0CEH，；E，N，T，E，R DB 0BFH，92H，0F0H， ；，S，J************************提示字裝入子程序************************LOAD: MOV R7,08H MOV R0,30H MOV A,13H ；CPUREADYLD: MOV @R0,A INC R0 INC A DJNZ R7,LD RET LED熄滅子程序CLEAR: MOV R7,08H MOV R0,30H MOV A,12H ；顯示熄滅ABCL: MOV @R0,A INC R0 DJNZ R7,ABCL RET************************時間值輸入子程序************************TIME: MOV R7,08H MOV R0,30H MOV A,19H ；顯示ENTERSJLP: MOV @R0,A INC R0 INC R0 DJNZ R7,LP LCALL DISPBEGIN:STEB ；開鍵盤控制CLR ；并行置入鍵值 STEB ；允許串行移位 MOV SCON,00010000BWTI: JNB RI,WTI ；判斷是否接收完畢 CLR RI MOV A,0EH ；屏蔽開始鍵 MOV R3,A LCALL D_10MS ；延時，消抖 CLR STEB MOV SCON,00010000BWT2: JNB RI,WT2 CLR RI MOV A,SBUF ANL A,0EH MOV 22H,A MOV A,R3 CJNE A,22H,BEGIN CJNE A,FDH,S_10 MOV 20H,01H ； CLR ；關(guān)鍵盤控制 RET S_10 :CJNE A,FBH,S_20 MOV 20H,0AH ； 預置門時間1S CLR RETS_20: CJNE A,F7H,BEGIN MOV 20H,64H ； 預置門時間10S CLR RET*************************延時10MS子程序*************************D_10MS: MOV R7,14HLOOP1: MOV R6,0F9HLOOP2: DJNZ R6,LOOP2 DJNZ R7,LOOP1 RET************************延時100MS子程序*************************D_100MS: MOV R7,0C8HDL1: MOV R6,0F9HDL2: DJNZ R6,DL1 DJNZ R7,DL2 RET*************************字節(jié)展開子程序****************************EXTD: MOV R1,30H MOV R7,04HAGAN: MOV A,@R0 MOV R3,A ANL A,00001111B MOV @R1,A MOV A,R3 INC R1 ANL A,11110000B MOV @R1,A INC R1 INC R0 DJNZ R7,AGAN RET*********************4字節(jié)乘法子程序FS*NX*************************MUL_SUB:MOV A,M ADD A,R0 MOV R5,A XCH A,R1 XCH A,R5 ADD A,N XCH A,R0 MOV R6,A MOV B,M MOV NCNT,BNMLMN1: DEC R0 DEC R1 CLR A XCH A,@R1 MOV @R0,A DJNZ NCNT,NMLMN1 MOV NCNT,BNMLMN2: CLR A XCH A,@R0 MOV R2,A MOV A,R6 MOV R0,A MOV A,R5 MOV R1,A MOV R7,N CLR CNMLMN3: MOV A,R2 MOV B,@R1 INC R1 MUL AB ADDC A,@R0 MOV @R0,A INC R0 MOV A,B ADDC A,@R016
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鄂ICP備17016276號-1