基于at89c51單片機(jī)的多點(diǎn)溫度測(cè)量系統(tǒng)設(shè)計(jì)(2)(編輯修改稿)
2024-09-10 11:21 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 07H DJNZ R6,$ RRC A MOV TEMPDIN,C MOV R6,34H DJNZ R6,$ SETB TENPDIN DJNZ R7,WRITEDS1820LOP RET 。 READ TEMP READTEMP: LCALL INITEDS1820 MOV A,0CCH LCALL WRITEDS1820 MOV R6,34H DJNZ R6,$ MOV A,44H LCALL WRITEDS1820 MOV R6,34H DJNZ R6,$ RET READTEMP1: LCALL INITDS1820 MOV A,0CCH LCALL WRITEDS1820 MOV R6,34H DJNZ R6,$ MOV A,0BEH LCALL WRITEDS1820 MOV R6,34H DJNZ R6,$ MOV R5,09H MOV R0,TEMPHEAD MOV B,00H READTEMP2: LCALL READDS1820 MOV @R0,A INC R0 READTEMP21:LCALL CRC8CAL DJNZ R5,READTEMP2 MOV A,B JNZ READTEMPOUT MOV A,TEMPHEAD+0 MOV TEMPL,A MOV A,TEMPHEAD+1 MOV TEMPH,A READTEMPOUT: RET 。 處理溫度BCD碼子程序 CONVTEAMP: MOV A,TEMPH ANL A,80H JZ TEMPC1 CLR C MOV A,TEMPL CPL A ADD A,01H MOV TEMPL,A MOV A,TEMPH CPL A ADDC A,00H MOV TEMPH,A MOV TEMPHC,0BH SJMP TEMPCH TEMPC1: MOV TEMPHC,0AH TEMPC11: MOV A,TEMPHC SWAP A MOV TEMPHC,A MOV A,TEMPL ANL A,0FH MOV DPTR,TEMPDOTTAB MOVC A,@A+DPTR MOV TEMPLC,A MOV A,TEMPL ANL A,0F0H SWAP A MOV TEMPL,A MOV A,TEMPH ANL A,0FH SWAP A ORL A,TEMPL LCALL HEX2BCD1 MOV TEMPL,A ANL A,0F0H SWAP A ORL A,TEMPHC MOV TEMPHC,A MOV A,TEMPL ANL A,0FH SWAP A ORL A,TEMPLC MOV TEMPLC,A MOV A,R7 JZ TEMPC12 ANL A,0FH SWAP A MOV R7,A MOV A,TEMPHC ANL A,0FH ORL A,R7 MOV TEMPHC,A TEMPC12: RET 。 小數(shù)部分碼表 TEMPDOTTAB: DB 00H, 01H, 01H, 02H, 03H, 03H, 04H,04H,05H,06H DB 06H,07H,08H,09H,09H 。 顯示區(qū)BCD碼溫度值刷新子程序 DISPBCD: MOV A,TEMPLC ANL A,0FH MOV 70H,A MOV A
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