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基于單片機的轉(zhuǎn)速表設(shè)計2(文件)

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【正文】 定時到 JNB ,F(xiàn)2 等待脈沖上升沿 CLR TR0 停計數(shù),存放M及Tg值 CLR TR1 MOV 31H,TH0 M1值 MOV 30H,TL0 MOV 41H,TH1 t值 MOV 40H,TL1T: MOV R0,40H T=Tg+t 的結(jié)果存在41H,40H中 MOV R1,42H MOV R6,02H CLR CLOOP1:MOV A,R0 ADDC A,R1 MOV R0,A INC R0 INC R1 DJNZ R6,LOOP1M法處理程序 CLR A MOV R7,02H MOV R0,3FHx60: MOV R1,3CH 60—3CH MOV R2,31H 送M 1值到31H,30H MOV R3,30HMUL0: MOV A,R3 計算60M1 MOV B,R1 MUL AB AL,BH XCH A,R1 MOV R5,B MOV B,R2 MUL AB ADD A,R5 MOV R4,A CLR A ADDC A,B MOV R5,A MOV A,R5 MOV R0,A DEC R0 MOV A,R4 MOV R0,A DEC R0 MOV A,R1 MOV R0,A DEC R0 DJNZ R7,Tg 60M1存入3FH,3EH,3DH,PTg存入3CH,3BH,3AH LJMP DDIVTg: MOV R1,50H P=10 MOV R2,41H MOV R3,40H SJMP MUL0DDIV: MOV R0,0E0H 3662rpm為設(shè)定值 MOV R1,01H MOV R2,00H 計算n=60M1/PT MOV R3,3FH MOV R7,3EH MOV R6,3DH MOV R4,3BH MOV R5,3AH MOV A,R1 PUSH ACC MOV B,10HAO: CLR C MOV A,R6 RLC A MOV R6,A MOV A,R7 RLC A MOV R7,A MOV A,R3 RLC A MOV R3,A XCH A,R2 RLC A XCH A,R2 MOV ,C CLR C SUBB A,R5 MOV R1,A MOV A,R2 SUBB A,R4 JB ,AS JC ARAS: MOV R2,A MOV A,R1 MOV R3,A INC R6AR: DJNZ B,AO POP ACC MOV R1,A MOV A,R7 MOV 39H,A 轉(zhuǎn)速n計算結(jié)果存在39H,38H中 MOV A,R6 MOV 38H,A MOV A,R1 CJNE A,39H,LP1 轉(zhuǎn)速值與設(shè)定值進行比較 LJMP LP02LP1: JC LP3 MOV A,R0LP02: CJNE A,38H,LP2 LJMP SHNOWLP2: JC LP3 LJMP TF 若小于設(shè)定值3662rpm則轉(zhuǎn)到T法LP3: LJMP SHNOWT法處理程序TF: CLR A T法計算 MOV TH1,A MOV TL1,A MOV TH0,A MOV TL0,A JNB ,F(xiàn)1 SETB TR1 JNB ,F(xiàn)2 CLR TR1 MOV 41H,TH1 MOV 40H,TL1 M2值存于41H,40H中PxM2: CLR A 計算PM2 MOV R1,50H 送入P值 MOV R2,41H M2值 MOV R3,40H MOV A,R3 MOV B,R1 MUL AB XCH A,R1 MOV R5,B MOV B,R2 MUL AB ADD A,R5 MOV R4,A CLR A ADDC A,B MOV R5,A MOV 3CH,R5 MOV 3BH,R4 MOV 3AH,R3MOV R2,00H 計算n=60000000/PM2 MOV R3,00H MOV R4,03H MOV R4,90H MOV R6,87H MOV R7,00H MOV A,3CH XCH A,3AH XCH A,3CHDDV3:MOV R1,3AH MOV R0,18H INC R1 INC R1SD: CLR C MOV A,R7 RLC A MOV R7,A MOV A,R6 RLC A MOV R6,A MOV A,R5 RLC A MOV R5,A MOV A,R4 RLC A MOV R4,A XCH A,R3 RLC A XCH A,R3 XCH A,R2 RLC A XCH A,R2 MOV ,C CLR C SUBB A,R1 DEC R1 MOV A,R3 SUBB A,R1 DEC R1 MOV B,A MOV A,R2 SUBB A,R1 INC R1 INC R1 JB ,SA JC SBSA: CLR C MOV R2,A MOV A,R4 SUBB A,R1 MOV R4,A MOV R3,B INC R7SB: DJNZ R0,SD DEC R1 DEC R1 RET 轉(zhuǎn)速n放在R5,R6,R7中附錄三:按鍵程序鍵盤定義K1: REG 按鍵1引腳定義K2: REG 按鍵2引腳定義K3: REG 按鍵3引腳定義K4: REG 按鍵4引腳定義K5: REG 按鍵5引腳定義ORG 00H 程序代碼從0開始執(zhí)行LOOP:JB KEY1,L1 未按下KEY1鍵則繼續(xù)掃描 JNB KEY1, DELEY 若按下則等待放開 KEY1 KEYED 確定按下KEY1鍵 CALL DEL 處理KEY1鍵程序 JIMP LOOP 繼續(xù)掃描循環(huán)L1: JB KEY2,L2 未按下KEY2鍵則繼續(xù)掃描 JNB KEY2, DELEY 若
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