自動(dòng)化畢業(yè)設(shè)計(jì)-基于單片機(jī)的8路模擬量輸入數(shù)值顯示控制器的設(shè)計(jì)-資料下載頁
2025-01-17 04:01本頁面
【正文】 WAIT: CLR ST SETB ST CLR ST 。啟動(dòng)轉(zhuǎn)換 JNB EOC,$ 。等待轉(zhuǎn)換結(jié)束 SETB OE 。允許輸出 MOV ADC,P1 。暫存轉(zhuǎn)換結(jié)果 CLR OE 。關(guān)閉輸出 MOV A,ADC 。將AD轉(zhuǎn)換結(jié)果轉(zhuǎn)換成BCD碼 MOV B,100 DIV AB MOV LED_2,A MOV A,B MOV B,10 DIV AB MOV LED_1,A MOV LED_0,B MOV A, P3 SWAP A ANL A,07H MOV LED_3,A LCALL DISP 。顯示AD轉(zhuǎn)換結(jié)果 DISP: MOV A, LED_3 MOVC A, @A+DPTR CLR MOV P0, A LCALL DELAY SETB MOV A,LED_0 。數(shù)碼顯示子程序 MOVC A,@A+DPTR CLR MOV P0,A LCALL DELAY SETB MOV A,LED_1 MOVC A,@A+DPTR CLR MOV P0,A LCALL DELAY SETB MOV A,LED_2 MOVC A,@A+DPTR CLR MOV P0,A LCALL DELAY SETB RETDELAY: MOV R6,10 。延時(shí)5毫秒D1: MOV R7,250D2: DJNZ R7,D2 DJNZ R6,D1 RETTABLE: DB 3FH,06H,5BH,4FH,66H DB 6DH,7DH,07H,7FH,6FH END附錄二：8路模擬外接開關(guān)控制程序清單LED_0 EQU 30HLED_1 EQU 31HLED_2 EQU 32H 。存放段碼ADC EQU 35HCLOCK BIT 。定義ADC0808時(shí)鐘位ST BIT EOC BIT OE BIT ORG 00H SJMP START ORG 0BH LJMP INT_T0START: MOV LED_0,00H MOV LED_1,00H MOV LED_2,00H MOV DPTR,TABLE 。段碼表首地址 MOV TMOD,02H MOV TH0,245 MOV TL0,00H MOV IE,82H SETB TR0WAIT: CLR ST SETB ST CLR ST 。啟動(dòng)AD轉(zhuǎn)換 JNB EOC,$ 。等待轉(zhuǎn)換結(jié)束 SETB OE MOV ADC,P1 。讀取AD轉(zhuǎn)換結(jié)果 CLR OE MOV A,ADC MOV B,100 。AD轉(zhuǎn)換結(jié)果轉(zhuǎn)換成BCD碼 DIV AB MOV LED_2,A MOV A,B MOV B,10 DIV AB MOV LED_1,A MOV LED_0,B LCALL DISP SJMP WAITINT_T0: CPL CLOCK 。提供ADC0808時(shí)鐘信號(hào) RETIDISP: MOV A,LED_0 。顯示子程序 MOVC A,@A+DPTR CLR MOV P0,A LCALL DELAY SETB MOV A,LED_1 MOVC A,@A+DPTR CLR MOV P0,A LCALL DELAY SETB MOV A,LED_2 MOVC A,@A+DPTR CLR MOV P0,A LCALL DELAY SETB RETDELAY: MOV R6,10 。延時(shí)5毫秒D1: MOV R7,250 DJNZ R7,$ DJNZ R6,D1 RETTABLE: DB 3FH,06H,5BH,4FH,66H DB 6DH,7DH,07H,7FH,6FH END25
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