【正文】 LCALL yanshi22LCALL yanshi22 MOV P1,0EHMOV P1,0CH LCALL yanshi22LCALL yanshi22 RETMOV P1,0DH yanshi1:MOV R1,200LCALL yanshi22 ；*****延時子程序2—MOV P1,09H ；****延時子程序1，實(shí)際耗時大于1sLCALL yanshi22 ；（100*100*50*2μs=1s）MOV P1,0BH yanshi21:MOV R2,100LCALL yanshi22 yanshi23:MOV R3,100CJNZ R7,00H,DDJ8 DJNZ R3 $LCALL yanshi22 DJNZ R2,yanshi23DJNZ R1,yanshi21 ；****存首位位選子；*******中斷結(jié)束 MOV A,10HGGJ0:CJNE R7,00H,GGJ1 yanshi2:MOV R2,150CJNE R6,00H,GGJ1 ；存動態(tài)顯示緩沖區(qū)首地址AJMP DOJ4 LEDS:MOV @R0,AGGJ1:DJNZ R6,DOJ3 ；寄存器間接地址尋址:（R1）←（A）CJNZ R7,00H,DDJ8 INC R0DOJ4:CALL DOJ7 CJNE R0,7EH,LEDSSJMP DOJ4 INC ADDJ8:DJNZ R7,DOJ3 MOV @R0,AAJMP DOJ4 RETDOJ3:CALL DOJ7 X3: MOV R4,ARET MOV R0,50HMOV A,R6 MOV A,@R0CALL PTDS5 MOV R1,AMOV A,R7 MOV A,R4CALL PTDS5 MOV @R1,ACALL SSEE CLR ARET POP DPHPTDS5:MOV R1,A POP DPLCALL PTDS6 MOVC A,@A+DPTRMOV A,R1 INC DPTRSWAP A CJNE A,01H,X30PTDS6:ANL A,0FH DEC R1MOV @R0,A CLR AINC R0 MOVC A,@A+DPTRRET X31: MOV @R0,A；*****顯示子程序 INC DPTR LEDP:MOV 50H,7EH PUSH DPLPUSH DPH ；~~~~~~~~~~~~~~鍵值表RET DB 07H,04H,08H,05H,09H,06H,0AH,X30: DEC R1 03AH,0BH,01H,00H,02H,0FH,MOV A,R1 03H,0EH,03AH,0CH,0DHSJMP X31 DIS: PUSH DPLX2: MOV R6,50H SETB RS1X0: ACALL XLE MOV R0,7EH；六位顯示完？ MOV R2,20HJNB ,XX0 MOV R3,00HDJNZ R6,X0 MOV DPTR,LS0MOV R6,20H LS2: MOV A,@R0MOV R0,50H MOVC A,@A+DPTRMOV A,@R0 MOV R1,0DCHMOV R0,A MOV @R1,AMOV A @R0 MOV A,R2MOV A,10H INC R1MOV @R0,A MOVX @R1,AX1: ACALL XLE LS1: DJNZ R3,LS1JNB ,XX1 CLR C；五位顯示完了嗎? RRC ADJNZ R6,X1 MOV R2,AMOV A,R7 DEC R0MOV @R0,A JNZ LS2SJMP X2 MOVX @R0,AXX1:MOV R6,A DEC R0MOV A,R7 CPL A MOV @R0,A MOVX @R0,AMOV A,R6 POP DPLXX0:RET MOV R7,ARET DJNZ R5,SSE2；***********字型表 CLR RS1LS0: DB 0C0H,0F9H,90H,0A4H RET0B0H,99H,92H XLE:ACALL DISDB 82H,0F8H,80H,90H,88H XRL A,R383H,0C6H MOV R3,04HDB 0A1H,86H,8EH,0FFH,0CH, MOV R4,02H89H,7FH,0BFH JZ X10SSEE: SETB RS1 MOV R2,88HMOV R5,05H MOV R4,88HSSE2: MOV 30H,20H X10: DEC R4MOV 31H,7EH MOV A,R4MOV R7,06H XRL A,82HSSE1: MOV R1,0DDH JZ X11MOV A,30H MOV A,R4MOVX @R1,A XRL A,0EHMOV R0,31H JZ X11MOV A,@R0 MOV R4,20HMOV DPTR ,DDFF DEC R2MOVC A,@A+DPTR SJMP X13MOV R1,0DCH X12:MOV R4,0FHMOVX @R1,A X11:MOV R2,04HMOV A,30H NOPRR A NOPMOV 30H,A MOV R4,03HDEC 31H X13: MOV R1,48HMOV A,0FFH MOV A,R2MOVX @R1,A MOV @R1,ADJNZ R7,SSE1 INC R1MOV A,R3 CPL AMOV @R1,A ANL A,0FHMOV A,R4 JNZ LP0JB ,X113 INC R0JB ,X113 DJNZ R3,LP1MOV DPTR,LS3 XP33: MOV A,20HMOVC A,@A+DPTR XP3: MOV R2,AX113: RET 8EH,0FFH,0CH,89H,0DEHDDFF:DB 0C0H,0F9H,0A4H,0B0H ；A_F_P99H,92H,82H,0F8H,80H,90H KEY: SETB RS1MOV R4,A ；工作寄存區(qū)的切換，實(shí)現(xiàn)現(xiàn)場的保護(hù)MOV R1,48H MOV R3,08HMOV A,@R1 MOV R0,00HMOV R2,A ；首列號送R0INC R1 LP1: MOV R1,0DDHMOV A,@R1MOV R3,AMOV A,R4；鍵入口MOV A,R2MOVX @R1,A；首列掃描字送鍵入口RL AMOV R2,AMOVX @R1,ARL AMOV R2,AINC R1 MOVX A,@R1結(jié)論基本實(shí)現(xiàn)如下功能：鍵盤（44），控制步進(jìn)電動機(jī)的拍數(shù)（雙四拍/四相八拍）的選擇，是電機(jī)正反轉(zhuǎn)，轉(zhuǎn)速級速選擇（0—F級），電機(jī)步數(shù)的精確定位。并通過LED顯示器對以上參數(shù)進(jìn)行顯示。其中6位LED中，第一位顯示拍數(shù)參數(shù)（0為雙四拍，0以外數(shù)字為四相八拍）；第二位顯示速度級數(shù)；第三位顯示正反轉(zhuǎn)參數(shù)（1表示電機(jī)正轉(zhuǎn)，1以外數(shù)字表示電機(jī)正轉(zhuǎn)）；第四、五、六位顯示步進(jìn)電動機(jī)剩余步數(shù)（當(dāng)三位減為0時電機(jī)停止轉(zhuǎn)動）。單片機(jī)的外部中斷0及外部中斷1，分別實(shí)現(xiàn)電機(jī)的暫停及停止后進(jìn)行正反轉(zhuǎn)往復(fù)運(yùn)動。系統(tǒng)設(shè)計(jì)中，考慮到工業(yè)運(yùn)用中的特殊環(huán)境，此兩個中斷為隨機(jī)中斷，實(shí)現(xiàn)特殊環(huán)境的急停及數(shù)控機(jī)床的自動進(jìn)給運(yùn)動?？紤]到電機(jī)運(yùn)行中出現(xiàn)的丟步、失步，系統(tǒng)中進(jìn)行了電動機(jī)過電流的保護(hù)及報警電路。參考文獻(xiàn)[1] 陳隆昌，閻治安，劉新正 控制電機(jī)（第三版）[M].西安：西安電子科技大學(xué)出版