微型計算機控制技術(shù)課程設(shè)計---步進電機角度控制(存儲版)
【正文】 ............... KEYSTART: CMP COUNT,00H JZ STA1 MOV AL,COUNT CBW PUSH AX MOV SI,OFFSET VAR4 MOV DI,OFFSET TABLE MOV DL,00H STA4: MOV BX,[SI] MOV AX,[SI+2] MOV DH,0FH DIV DH MOV DH,04H MUL DH INC SI INC SI INC SI INC SI PUSH AX STA5: POP AX MOV CX,AX PUSH AX STA2: PUSH DX MOV AL,[DI] MOV DX,0600H OUT DX,AL POP DX INC DI INC DL CALL DISP1 CALL DALLY1 CMP DL,08H JNZ STA3 MOV DL,00H MOV DI,OFFSET TABLE STA3: LOOP STA2 CALL DISP1 DEC BX JNZ STA5 INC D_COUNT MOV AL,COUNT POP AX CALL DISP1 DEC COUNT JNZ STA4 POP AX CALL DISP1 DEC COUNT JNZ STA4 POP AX MOV COUNT,AL MOV D_COUNT,00H MOV TAB_C,DI MOV CL,DL STA1: RET 。檢測 PC6口 JNZ KEY_6 CALL KEYCLR JMP STTK KEY_6:MOV AL,0FDH MOV DX,0604H OUT DX,AL MOV DX,0604H IN AL,DX TEST AL,20H 。.......................延時 ................................ TIME: PUSH AX PUSH CX MOV CX,0006H TIME1: MOV AX,0100H TIME2: DEC AX JNZ TIME2 LOOP TIME1 POP CX POP AX 6 RET 。檢測 PC6口 JNZ KEY_6 CALL KEYF ；否則是按鍵 2 JMP STTK KEY_6:MOV AL,0FBH 。8255初始化 MOV DX,0606H OUT DX,AL STT: MOV AL,60H MOV DX,0604H OUT DX,AL NEXT: MOV DX,0604H IN AL, DX AND AL,60H CMP AL,60H JNZ KEYABC CALL DISP JMP STT 。 開始 設(shè)定 8255A 工作方式， A、B 口輸出， C 口 PC4~PC7 輸入， PC0~PC3 輸出 ,故 控制字為 88H 掃描鍵盤 是否有鍵按 下 判斷鍵值 否 是 延時 LED 顯示 驅(qū)動電機動作 延時 返回調(diào)用 判斷鍵值 3 任務 1 連接數(shù)碼管顯示電路和鍵盤電路，實現(xiàn)如下表所示的按鍵控制，并能夠左移顯示： 3 6 0 A B 7 2 F ： STACK SEGMENT STACK DB 64 DUP(?) STACK ENDS DATA SEGMENT ORG 0030H VAR1 DB 0FCH,0FCH,0FCH,0FCH VAR5 DB OF7H,0FBH,0FDH,0FEH VAR2 DB 0FCH,0FCH,0FCH,0FCH,0FCH,0FCH,0FCH,0FCH VAR3 DB 00H,00H,00H,00H,00H,00H,00H,00H VAR4 DB 00H,00H,00H,00H,00H,00H,00H,00H TABLE1 DB 0FCH,60H,0DAH,0F2H,66H,0B6H,0BEH,0E0H,0FEH,0F6H,0EEH,3EH,9CH,7AH,9EH,8EH DATA ENDS CODE SEGMENT ASSUME CS:CODE,DS:DATA START: MOV AX,DATA MOV DS,AX MOV AL,88H 。檢測 PC5 JNZ KEY_2 CALL KEY0 JMP STTK KEY_2:TEST AL,040H 。..................顯示 ........... DISP:PUSH DX PUSH CX MOV SI,OFFSET VAR1 MOV DX,0604H MOV AL,11111110B OUT DX,AL MOV DX,0602H MOV AL,[SI+3] OUT DX,AL DEC SI CALL TIME
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鄂ICP備17016276號-1