基于單片機(jī)聲波測距-資料下載頁
2025-01-18 16:23本頁面
【正文】 A MOV R6, A MOV A, R7 RLC A MOV R7, A MOV A, R0 RLC A MOV R0, A MOV A, R1 RLC A MOV R1, A JNC MULLOOP2 MOV A, R4 ADD A, R2 MOV R4, A MOV A, R5 ADDC A, R3 MOV R5, A MOV A, R6 ADDC A, 00H MOV R6, A MOV A, R7 ADDC A, 00H MOV R7, AMULLOOP2: DJNZ 46H, MULLOOP1 RET * 四字節(jié)/兩字節(jié)無符號數(shù)除法程序 * 。R7R6R5R4/R3R2=R7R6R5R4(商)...R1R0(余數(shù))/10000DIV4BY2: MOV 46H, 20H MOV R0, 00H MOV R1, 00HDIVLOOP1: MOV A, R4 RLC A MOV R4, A MOV A, R5 RLC A MOV R5, A MOV A, R6 RLC A MOV R6, A MOV A, R7 RLC A MOV R7, A MOV A, R0 RLC A MOV R0, A MOV A, R1 RLC A MOV R1, A CLR C MOV A, R0 SUBB A, R2 MOV B, A MOV A, R1大連民族學(xué)院 2022 級通信工程專業(yè)單片機(jī)系統(tǒng)課程設(shè)計報告15 SUBB A, R3 JC DIVLOOP2 MOV R0, B MOV R1, ADIVLOOP2: CPL C DJNZ 46H, DIVLOOP1 MOV A, R4 RLC A MOV R4, A MOV A, R5 RLC A MOV R5, A MOV A, R6 RLC A MOV R6, A MOV A, R7 RLC A MOV R7, A RET 。***************************** 。 。十六進(jìn)制雙字節(jié)轉(zhuǎn)三字節(jié)十進(jìn)制 。 。***************************** 。 HBCD:MOV A,R5 MOV R6,A MOV A,R4 MOV R7,A HB2: CLR A MOV R3,A MOV R4,A MOV R5,A MOV R2,10H HB3: MOV A,R7 RLC A MOV R7,A MOV A,R6 RLC A MOV R6,A MOV A,R5 ADDC A,R5 DA A MOV R5,A MOV A,R4 ADDC A,R4 DA A MOV R4,A MOV A,R3 ADDC A,R3 MOV R3,A DJNZ R2,HB3 MOV A,R5 ANL A,0FH MOV 40H,A MOV A,R5 ANL A,0F0H SWAP A MOV 41H,A MOV A,R4 MOV 42H,A RET。************************************。 顯示子程序 。************************************ DISPLAY1:MOV DPTR,TABLE1 MOV R0,4 DP1:MOV R1,250 LOOP:MOV A,40H 。顯示低位 MOVC A,@A+DPTR MOV P0,A CLR SETB CLR CLR ACALL DELAY1 SETB MOV A,41H。顯示中位 MOVC A,@A+DPTR MOV P0,A SETB CLR CLR ACALL DELAY1 SETB MOV A,42H 。顯示高位 JZ L MOVC A,@A+DPTR MOV P0,A大連民族學(xué)院 2022 級通信工程專業(yè)單片機(jī)系統(tǒng)課程設(shè)計報告16 SETB CLR CLR L:ACALL DELAY1 SETB DJNZ R1,LOOP DJNZ R0,DP1 RETTABLE1: DB 0C0H,0F9H,0A4H,0B0H,99H DB 92H,82H,0F8H,80H,90HDELAY1: MOV R7,80 DJNZ R7,$ RETDELAY: MOV R5,100 D: MOV R6,150 DJNZ R6,$ DJNZ R5,D RET END
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鄂ICP備17016276號-1