【正文】 Y2,0AH 。十位送熄滅符 MOV DISPLY3,SSZHAN4 AJMP INT_1OUT NEXT3:MOV DISPLY,SSZHAN1 MOV DISPLY1,SSZHAN2 MOV DISPLY2,SSZHAN3 MOV DISPLY3,0AH 。百位送熄滅符 AJMP INT_1OUT。。溫度轉(zhuǎn)換命令。。。。 START_TEMP:LCALL reset 。18B20復(fù)位 MOV A,0CCH 。SKIP ROM LCALL write MOV R6,34H 。DELAY 104μS DJNZ R6,$ MOV A,44H 。發(fā)溫度轉(zhuǎn)換命令 LCALL write MOV R6,34H 。DELAY 104μS DJNZ R6,$ RET。。讀取轉(zhuǎn)換溫度。。。。 read_temp:LCALL reset 。18B20復(fù)位 MOV A,55H 。SKIP ROM LCALL write MOV R6,34H 。DELAY 104μS DJNZ R6,$ JB TONG0,1 。監(jiān)視0通道溫度 LCALL DISP1 JNB TONG0,$3 MOV TONG,0 SETB XJ CLR ET0 CLR TR0 AJMP 5 1:JB TONG1,2 。監(jiān)視1通道溫度 LCALL DISP1 JNB TONG1,$3 MOV TONG,1 SETB XJ CLR ET0 CLR TR0 AJMP 5 2:JB TONG2,3 。監(jiān)視2通道溫度 LCALL DISP1 JNB TONG2,$3 MOV TONG,2 SETB XJ CLR ET0 CLR TR0 AJMP 5 3:JB TONG3,4 。監(jiān)視3通道溫度 LCALL DISP1 JNB TONG3,$3 MOV TONG,3 SETB XJ CLR ET0 CLR TR0 AJMP 5 4:JB XUNJIAN,5 。巡檢 LCALL DISP1 JNB XUNJIAN,$3 CLR XJ SETB ET0 SETB TR0 5:JB XJ,SL JNB SECOND1,SL CLR SECOND1 INC TONG MOV R5,TONG CJNE R5,4,SL MOV TONG,00H SL:MOV B,8 MOV A,TONG MUL AB MOV R3,8 MOV 75H,A SL1:MOV DPTR,TAB1 MOVC A,@A+DPTR LCALL WRITE LCALL DISP1 INC 75H MOV A,75H DJNZ R3,SL1 MOV A,0BEH 。發(fā)讀溫度命令 LCALL write LCALL DISP1 MOV R6,34H 。DELAY 104μS DJNZ R6,$ MOV R5,02H MOV R0,TEMPHEAD MOV B,00H START_TEM2:LCALL read MOV @R0,A INC R0 DJNZ R5,START_TEM2 MOV A,TEMPHEAD+0 MOV TEMPL,A MOV A,TEMPHEAD+1 MOV TEMPH,ASTART_TEMPOUT:RET TAB1:DB 28H,60H,89H,0EDH,00H,00H,00H,31H DB 28H,78H,7AH,0EDH,00H,00H,00H,23H DB 28H,6DH,9DH,0EDH,00H,00H,00H,18H DB 28H,55H,12H,0D7H,00H,00H,00H,0A3H。。溫度數(shù)據(jù)處理。。。。 cont_temp: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 。TEMPHC HI=符號位 MOV TEMPHC,0BH SJMP TEMPC11 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 。TEMPLC LOW=小數(shù)部分 BCD MOV A,TEMPL 。整數(shù)部分 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 。TEMPHC LOW=十位數(shù)BCD MOV TEMPHC,A MOV A,TEMPL ANL A,0FH SWAP A 。TEMPLC HI=個位數(shù)BCD ORL A,TEMPLC MOV TEMPLC ,A MOV A,R7 JZ TEMPC12 ANL A,0FH SWAP A MOV R7,A MOV A,TEMPHC 。TEMPHC HI=百位數(shù)BCD ANL A,0FH ORL A,R7 MOV TEMPHC,A TEMPC12:RET TEMPDOTTAB:DB 00H,01H,01H,02H,03H,03H,04H,04H,05H,06H DB 06H,07H,08H,08H,09H,09H。....... 。小數(shù)部分碼表。。比較溫度值。。。。。 BIJIAO:MOV A,TONG CJNE A,0,SB_1 MOV S_X,STONG0_X 。0通道設(shè)定溫度值送比 較單元 MOV S_G,STONG0_G MOV S_S,STONG0_S MOV S_B,STONG0_B SJMP AS SB_1:CJNE A,1,SB_2 MOV S_X,STONG1_X 。1通道設(shè)定溫度值送比 較單元 MOV S_G,STONG1_G MOV S_S,STONG1_S MOV S_B,STONG1_B SJMP AS SB_2:CJNE A,2,SB_3 MOV S_X,STONG2_X 。2通道設(shè)定溫度值送比 較單元 MOV S_G,STONG2_G MOV S_S,STONG2_S MOV S_B,STONG2_B SJMP AS SB_3:MOV S_X,STONG3_X 。3通道設(shè)定溫度值送比 較單元 MOV S_G,STONG3_G