微机原理步进电机控制微机原理步进电机控制实验报告实验步进电机控制⼀、实验内容l、⽤8255的PA0,PA3输出脉冲信号，驱动步进电机转动，通过键盘设定来控制步进电机正转、反转、停⽌。
2、实验预备知识，步进电机驱动原理是通过对它每相线圈中的电流的顺序切换来使电机作步进式旋转。
驱动电路由脉冲信号来控制，所以调节脉冲信号的频率便可改变步进电机的转速，⽤微电脑控制步进电机最适合。
⼆、实验步骤1、在系统处于命令提⽰符“P.”态下，按SCAL键。
2、按图6,9连好实验线路图，8255的PA0,PA3依次连到HA-HD插孔。
3、运⾏实验程序。
在系统处于命令提⽰符“P.”态下，输⼊1630，按EXEC键，显⽰BJ?，按“1”键正转;按“2”键反转;按“3”停⽌。
4、观察步进电机转动情况。
三、实验原理图, 实验接线图:四(实验程序清单CODE SEGMENT ;BJ.ASM ASSUME CS: CODE IOCONPT EQU 0FF2BH IOBPT EQU 0FF29H IOAPT EQU 0FF28HPA EQU 0FF20H ;字位⼝PB EQU 0FF21H ;字形⼝PC EQU 0FF22H ;键⼊⼝ORG 1630HSTART: JMP START0 BUF DB ?,?,?,?,?,? KZ DB ?ltime db ?lkey db ?data1:db0c0h,0f9h,0a4h,0b0h,99h,92h,82h,0f8h,80h,90h,88h,83h,0c6h,0a1h db86h,8eh,0ffh,0ch,89h,0deh,0c7h,8ch,0f3h,0bfh,8FH,0F1HSTART0: CALL BUF1 ;写显⽰缓冲区初值MOV AL,88H ;MOV DX,IOCONPTOUT DX,AL ;写命令字redikey: call dispkey ;调⽤显⽰键扫cmp KZ,01h ;是1键正转JZ ZZcmp KZ,02h ;是2键反转JZ STXJMP REDIKEY ;继续读键JMP ST ;转停⽌ STX:ZZ: CALL BUFZ ;显⽰正转值ZZ1: MOV DX,IOAPT ;PA⼝MOV AL,03H ;MOV DX,IOAPTOUT DX,AL ;驱动步进电机,A.B两相CALL DELPZ ;延时,读键MOV AL,06HMOV DX,IOAPTOUT DX,AL ;驱动步进电机,A.d两相CALL DELPZ MOV AL,0CHMOV DX,IOAPTOUT DX,AL ;驱动步进电机,C.D两相CALL DELPZ MOV AL,09H ;驱动步进电机,B.C两相MOV DX,IOAPT OUT DX,ALCALL DELPZMOV AL,03HMOV DX,IOAPTOUT DX,ALCALL DELPZMOV AL,06HMOV DX,IOAPTOUT DX,ALCALL DELPZMOV AL,0CHMOV DX,IOAPTOUT DX,ALCALL DELPZMOV AL,09HMOV DX,IOAPTOUT DX,AL;------------------------- FZ: CALL BUFF ;反转⼊⼝FZ1: MOV DX,IOAPTMOV AL,0CHOUT DX,ALCALL DELPFMOV AL,06HMOV DX,IOAPTOUT DX,ALCALL DELPFMOV DX,IOAPTMOV AL,03HOUT DX,ALCALL DELPFMOV AL,09HMOV DX,IOAPTOUT DX,ALCALL DELPFMOV AL,0CHMOV DX,IOAPTOUT DX,ALCALL DELPFMOV AL,06HMOV DX,IOAPTOUT DX,ALCALL DELPFMOV AL,03HMOV DX,IOAPTOUT DX,ALCALL DELPFMOV AL,09HMOV DX,IOAPTOUT DX,ALCALL DELPFMOV AL,00HOUT DX,ALST1: call dispkey cmp KZ,01hJZ ZZMONcmp KZ,02hJZ FZMONJMP ST1delpZ: mov cx,02h con1: push cx CALL dispkey pop cxcmp KZ,02hJZ FZMONcmp KZ,03hJZ STMONloop con1RETdelpF: mov cx,02h con2: push cx CALL dispkey pop cxcmp KZ,01hJZ ZZMONcmp KZ,03hJZ STMONloop con2RETZZMON: POP CXJMP ZZFZMON: POP CXJMP FZSTMON: POP CXJMP ST;-------------------------dispkey: call disp ;键盘显⽰⼦程序,见前注释call key mov ah,al ;newkeymov bl,ltime ;ltimemov dx,PA ;0ff21hout dx,alcmp ah,bhmov bh,ah ;bh=new keymov ah,bl ;al=timejz disk4mov bl,88hmov ah,88hdisk4: dec ahcmp ah,82hjz disk6cmp ah,0ehjz disk6cmp ah,00hjz disk5mov ah,20hdec bljmp disk7disk5: mov ah,0fhdisk6: mov bl,ahmov ah,bhdisk7: mov ltime,blmov lkey,bhmov KZ,bhmov al,ahretkey: mov al,0ffh ;键扫⼦程序mov dx,PB out dx,almov bl,00hmov ah,0fehmov cx,08hkey1: mov al,ahmov dx,PAmov ah,alnopnopnopnopnopnopmov dx,PCin al,dxnot alnopnopand al,0fhjnz key2inc blloop key1jmp nkeykey2: test al,01h je key3 mov al,00hjmp key6key3: test al,02h je key4 mov al,08hjmp key6key4: test al,04h je key5 mov al,10hjmp key6key5: test al,08hje nkeymov al,18hkey6: add al,blcmp al,10hjnc fkeymov bl,almov al,[bx+si]retnkey: mov al,20h fkey: retdata2: db 07h,04h,08h,05h,09h,06h,0ah,0bh DB 01h,00h,02h,0fh,03h,0eh,0ch,0dh DISP: MOV AL,0FFH ;显⽰⼦程序 ,5ms MOV DX,PAOUT DX,ALMOV CL,0DFH ;20HMOV BX,OFFSET BUF DIS1: MOV AL,[BX]MOV AH,00HPUSH BXMOV BX,OFFSET DATA1ADD BX,AXMOV AL,[BX]POP BXMOV DX,PBOUT DX,ALMOV AL,CLMOV DX,PAOUT DX,ALPUSH CXDIS2: MOV CX,0a0HLOOP $POP CXCMP CL,0FEHJZ LX1INC BXROR CL,1JMP DIS1LX1: MOV AL,0FFHMOV DX,PBOUT DX,ALRETBUF1: MOV BUF,0BH ;写”BJ----” MOV BUF+1,019HMOV BUF+4,17HMOV BUF+5,17HRETBUFZ: MOV BUF,0BH ;写”BJ---F” MOV BUF+1,19HMOV BUF+2,17HMOV BUF+3,17HMOV BUF+4,17HMOV BUF+5,0FHRETBUFF: MOV BUF,0BH ;写”BJ---r” MOV BUF+1,19HMOV BUF+2,17HMOV BUF+3,17HMOV BUF+4,17HMOV BUF+5,18HRETBUFS: MOV BUF,0BH ;写”BJ---S” MOV BUF+1,19HMOV BUF+2,17HMOV BUF+3,17HMOV BUF+4,17HMOV BUF+5,05HRETCODE ENDSEND START五、实验总结1、通过实验进⼀步了解8086的使⽤，学习汇编语⾔编程⽅法及调试技巧。
