基于8086的步進(jìn)電機(jī)控制課程設(shè)計-資料下載頁
2025-06-28 01:47本頁面
【正文】 DANG3:POP AX MOV DX,MY8255_C OUT DX,AL INC BX INC BX MOV [SI+8],BX MOV [SI+6],07H CALL DALLY CALL DALLY1 CALL DALLY1 CALL DALLY1 JMP SPEED DANG4:POP AX MOV DX,MY8255_C OUT DX,AL INC BX INC BX MOV [SI+8],BX MOV [SI+6],08H CALL DALLY JMP SPEED ZHI: MOV [SI+8],01H JMP QIDONG STOP: MOV [SI],00H MOV [SI+4],03H MOV [SI+6],05H CALL CLEAR CALL DIS JMP QIDONG DALLY PROC NEAR 。軟件延時子程序 CALL CLEAR CALL DIS PUSH CX MOV CX,000FH D1: MOV AX,000FH D2: DEC AX JNZ D2 LOOP D1 POP CX RET DALLY ENDP CLEAR PROC NEAR 。清除數(shù)碼管顯示子程序 MOV DX,MY8255_B 。段位置0即可清除數(shù)碼管顯示 MOV AL,00H OUT DX,AL RET CLEAR ENDP DIS PROC NEAR 。顯示鍵值子程序 PUSH AX PUSH SI MOV SI,3006H MOV DL,0F7H MOV AL,DL AGAIN: PUSH DX MOV DX,MY8255_A OUT DX,AL 。設(shè)置X1～X4，選通一個數(shù)碼管 MOV AL,[SI] 。取出緩沖區(qū)中存放鍵值 MOV BX,OFFSET DTABLE1 AND AX,00FFH ADD BX,AX MOV AL,[BX] MOV DX,MY8255_B OUT DX,AL 。寫入數(shù)碼管A～Dp CALL DALLY1 DEC SI DEC SI 。取下一個鍵值 POP DX MOV AL,DL TEST AL,01H 。判斷是否顯示完？ JZ OUT1 。顯示完，返回 ROR AL,1 MOV DL,AL JMP AGAIN 。未顯示完，跳回繼續(xù) OUT1: POP SI POP AX RET DIS ENDP DALLY1 PROC NEAR 。軟件延時子程序 PUSH CX MOV CX,002FH D3: MOV AX,002FH D4: DEC AX JNZ D4 LOOP D3 POP CX RET DALLY1 ENDPCODE ENDS END START20
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