畢業(yè)設(shè)計-基于單片機多點溫度檢測-閱讀頁
2025-02-01 01:02本頁面
【正文】 : MOV TH0,3CH MOV TL0,0B0H DJNZ R6,TOEND?；謴?fù) R6 初值 ACALL TADC 。調(diào)用標(biāo)度轉(zhuǎn)換子程序 ACALL DISP。設(shè)置次數(shù) , MOV 50H,00H。內(nèi)部數(shù)據(jù)指針指向 50H 單元 畢業(yè)設(shè)計 基于單片機多點溫度檢測 19 MOV DPTR,7FF8H。設(shè)置 INTO\下降沿觸發(fā) SETB EX0。啟動 A/D 轉(zhuǎn)換 JB ,$。讀 A/D 轉(zhuǎn)換數(shù)據(jù) ADD A,40H MOV 40H,A JNC TT1。4 次轉(zhuǎn)換是否完成 CLR C。平均值存在 50H 單元 INC R0。外部指針下移， 指向下一通道 CJNZ R0,58H,NERT。中斷返回 NERT: MOVX DPTR,A。中斷返回，繼續(xù)等待下一次 顯示子程序如下 :DISP: MOV R2,04H。顯示緩沖區(qū)首址 SETB DL0: MOV A,R1。查字型碼 MOV SBUF ,A。是否輸出玩完個字節(jié) CLR TI 。4 個數(shù)是否都顯示完了？ RET TAB1: DB 0C0H,0F9H,0A4H,0B0H,99H， 92H,82H,0F8H,80H,90H TAB2: DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 19H,19H,19H,19H,19H,19H,19H,19H,19H,19H,19H,19H,19H,19H DB 19H,19H,19H,19H,19H,19H,19H,19H,19H,19H,19H DB 32H,32H,32H,32H,32H,32H,32H,32H,32H,32H,32H,32H,32H,32H DB 32H,32H,32H,32H,32H,32H,32H,32H,32H,32H,32H DB 4BH,4BH,4BH,4BH,4BH,4BH,4BH,4BH,4BH,4BH,4BH,4BH,4BH,4BH DB 4BH,4BH,4BH,4BH,4BH,4BH,4BH,4BH,4BH DB 64H,64H,64H,64H,64H,64H,64H,64H,64H,64H,64H,64H,64H,64H DB 64H,64H,64H,64H,64H,64H,64H,64H,64H DB 7DH,7DH,7DH,7DH,7DH,7DH,7DH,7DH,7DH,7DH,7DH,7DH,7DH,7DH DB 7DH,7DH,7DH,7DH,7DH,7DH,7DH,7DH,7DH DB 96H,96H,96H,96H,96H,96H,96H,96H,96H,96H,96H,96H,96H,96H DB 96H,96H,96H,96H,96H,96H,96H,96H,96H DB 0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH DB 0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH,0AFH DB 0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H DB 0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H,0C8H DB 0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H DB 0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H,0E1H DB 0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH DB 0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH,0FAH 鍵盤掃描程序 :KEYSCAN: MOV R4,00H。P2 口的低 4 位置 1 MOV A,P2。屏蔽高四位 CJNE A,0FH,DELAY。轉(zhuǎn)返回 DELAY: ACALL DEL10。重新輸入 P2 口的數(shù)據(jù) ANL A,0FH。PROG。沒有返回 PROG: MOV R2,04H。R3 送行線初值 SCAN: MOV A,R3 CPL A MOV P1,A。輸入掃描結(jié)果列線值 ANL A,0FH。判斷是否為本鍵值，是轉(zhuǎn)鍵值處理 畢業(yè)設(shè)計 基于單片機多點溫度檢測 21 MOV A,R3 RL A。保存修改后的值 DJNZ R2,SCAN。A 的低 4 位為鍵所在的列號 ADD A,R3。按鍵值送 R4 保存 RETU: RET DEL10: MOV R7,20H D1: MOV R6,248 DJNZ R6,$ DJNZ R7,D1 RET 報警系統(tǒng) :WARN: MOV A,R4 CLR C SUBB A,50H。小于設(shè)定溫下限溫值，報警 ACALL KEYSCAN。大于設(shè)定上限值，報警 SJMP $ WARN1: CPL RET END
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