單片機(jī)控制的單閉環(huán)直流調(diào)速系統(tǒng)-資料下載頁(yè)
2025-07-07 13:09本頁(yè)面
【正文】 R5,A MOV A,R3 。計(jì)算R3乘R6 MOV B,R6 MUL AB ADD A,R4 。累加部分積 MOV R4,A CLR A ADDC A,B MOV R3,A MOV A,R2 。計(jì)算R2乘R7 MOV B,R7 MUL AB ADD A,R4 。累加部分積 MOV R4,A MOV A,R3 ADDC A,B MOV R3,A CLR A RLC A XCH A,R2 。計(jì)算R2乘R6 MOV B,R6 MUL AB ADD A,R3 。累加部分積 MOV R3,A MOV A,R2 ADDC A,B MOV R2,A RETMDSE: JB F0,MDS2 。用補(bǔ)碼表示結(jié)果 CLR OV 。結(jié)果為正，原碼即補(bǔ)碼，計(jì)算成功 RETMDS: CLR F0 。結(jié)果符號(hào)初始化 MOV A,R6 。判斷第二操作數(shù)的符號(hào) JNB ,MDS1 。為正，不必處理 CPL F0 。為負(fù)，結(jié)果符號(hào)取反 XCH A,R7 CPL A ADD A,1 XCH A,R7 CPL A ADDC A,0 MOV R6,AMDS1: MOV A,R2 。判斷第一操作數(shù)或運(yùn)算結(jié)果的符號(hào) JNB ,MDS3 。為正，不必處理 CPL F0 。為負(fù)，結(jié)果符號(hào)取反MDS2: MOV A,R5 。求第一操作數(shù)的絕對(duì)值或運(yùn)算結(jié)果的補(bǔ)碼 CPL A ADD A,1 MOV R5,A MOV A,R4 CPL A ADDC A,0 MOV R4,A MOV A,R3 CPL A ADDC A,0 MOV R3,A MOV A,R2 CPL A ADDC A,0 MOV R2,AMDS3: CLR OV RETT0: CLR CLR CLR ET0 CLR ET1 CLR EA CLR TR0 CLR TR1 RETIT1: CLR TR1 MOV TMOD,15H MOV TL1,0E0H MOV TH1,0B1H SETB TR1 INC R3 CPL RETIINT0 : MOV PSW,00H ACALL KEYSCAN ACALL SERCH ACALL DOKEY RETIKEYSCAN: ACALL DISPLAY ACALL TEST JNZ LIST RETLIST: MOV R7,3 MOV R6,0FEHLOOP: MOV P1,R6 ACALL SCAN MOV A,R6 RL A MOV R6,A DJNZ R7,LOOP RETTEST: MOV P1,0F8H NOP MOV A,P1 ORL A,07H CPL A 。如果為0，無(wú)鍵按下 RETSCAN: JB ,LOOP1 MOV KEY,0 ACALL SEE RETLOOP1: JB ,LOOP2 MOV KEY,1 ACALL SEE RETLOOP2: JB ,LOOP3 MOV KEY,2 ACALL SEE RETLOOP3: JB ,LOOP4 MOV KEY,3 ACALL SEE RETLOOP4: RETSEE: CJNE R7,3,LOOP5 MOV R5,0 RETLOOP5: CJNE R7,2,LOOP6 MOV R5,4 RETLOOP6: CJNE R7,1,LOOP7 MOV R5,8 RETLOOP7: RETSERCH: MOV A,R5 ADD A,KEY MOV R4,A RETDOKEY: CJNE R4,10,TO 。10鍵為確定鍵 CLR F0 。F0為第一次按鍵的標(biāo)志位TO: JNB F0,GO 。不是確定鍵，就將數(shù)向左移一位 ACALL DISPLAY ACALL FAN RETIGO: MOV 30H,R4 MOV 31H,30H MOV 32H,31H MOV 33H,32H ACALL DISPLAY ACALL FAN RETIFAN: ACALL TEST JNZ FAN RETDISPLAY: MOV R3,8 MOV R0,30H MOV R2,07FHLOOP8: MOV A,@R0 MOV DPTR,TABL MOVC A,@A+DPTR MOV DPTR,0BFFFH MOVX @DPTR,A MOV A,R3 MOV DPTR,07FFFH MOVX @DPTR,A LCALL DELAY INC R0 RR A MOV R2,A DJNZ R3,LOOP8 RETDELAY: MOV R1,10BB1: MOV R4,50BB: DJNZ R4,BB DJNZ R1,BB1 RETTABL: DB 03fH,06H,5BH,4FH,66H DB 6DH,7DH,07H,7FH,6FH單片機(jī)2程序：ORG 000H ORG 0000H AJMP MAIN ORG 000BH AJMP T0 ORG 0023H AJMP JIE ORG 0030HMAIN: MOV TMOD,01H MOV TH0,0FFH MOV TL0,0EDH SETB EA SETB ET0 MOV SCON,80H SETB ES SETB REN SETB PT0 CLR RI CLR MOV R0,31 。31H為定時(shí)循環(huán)次數(shù)計(jì)數(shù)器 MOV @R0,0 SETB TR0LOOP: MOV A,@R0 CJNE A,30H,GO 。30H為占空值 CLR CJNE A,256,TT MOV @R0,0 AJMP TTGO: SETB TT: AJMP $ AJMP LOOPT0: CLR TR0 MOV TH0,0FFH MOV TL0,0EDH SETB TR0 INC @R0 RETIJIE: MOV A,SBUF MOV 30H,A CLR RI RETI
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