畢業(yè)論文-基于at89c51單片機(jī)的多點溫度測量系統(tǒng)設(shè)計(編輯修改稿)
2025-07-22 15:01 本頁面
【文章內(nèi)容簡介】 C AMOV TEMPDIN,CMOV R6,34HDJNZ R6,$SETB TENPDINDJNZ R7,WRITEDS1820LOPRET。 READ TEMPREADTEMP: LCALL INITEDS1820MOV A,0CCHLCALL WRITEDS1820MOV R6,34HDJNZ R6,$MOV A,44HLCALL WRITEDS1820MOV R6,34HDJNZ R6,$RETREADTEMP1: LCALL INITDS1820MOV A,0CCHLCALL WRITEDS1820MOV R6,34HDJNZ R6,$MOV A,0BEHLCALL WRITEDS1820MOV R6,34HDJNZ R6,$MOV R5,09HMOV R0,TEMPHEADMOV B,00HREADTEMP2: LCALL READDS1820MOV @R0,AINC R0READTEMP21:LCALL CRC8CALDJNZ R5,READTEMP2MOV A,BJNZ READTEMPOUTMOV A,TEMPHEAD+0MOV TEMPL,AMOV A,TEMPHEAD+1MOV TEMPH,AREADTEMPOUT: RET。 處理溫度BCD碼子程序CONVTEAMP: MOV A,TEMPHANL A,80HJZ TEMPC1CLR CMOV A,TEMPLCPL AADD A,01HMOV TEMPL,AMOV A,TEMPHCPL AADDC A,00HMOV TEMPH,AMOV TEMPHC,0BHSJMP TEMPCHTEMPC1: MOV TEMPHC,0AHTEMPC11: MOV A,TEMPHCSWAP AMOV TEMPHC,AMOV A,TEMPLANL A,0FHMOV DPTR,TEMPDOTTABMOVC A,@A+DPTRMOV TEMPLC,AMOV A,TEMPLANL A,0F0HSWAP AMOV TEMPL,AMOV A,TEMPHANL A,0FHSWAP AORL A,TEMPLLCALL HEX2BCD1MOV TEMPL,AANL A,0F0HSWAP AORL A,TEMPHCMOV TEMPHC,AMOV A,TEMPLANL A,0FHSWAP AORL A,TEMPLCMOV TEMPLC,AMOV A,R7JZ TEMPC12ANL A,0FHSWAP AMOV R7,AMOV A,TEMPHCANL A,0FHORL A,R7MOV TEMPHC,ATEMPC12: RET。 小數(shù)部分碼表TEMPDOTTAB: DB 00H, 01H, 01H, 02H, 03H, 03H, 04H,04H,05H,06HDB 06H,07H,08H,09H,09H。 顯示區(qū)BCD碼溫度值刷新子程序DISPBCD: MOV A,TEMPLCANL A,0FHMOV 70H,AMOV A,TEMPLCSWAP AANL A,0
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