【正文】 。溫度減1 LCALL DISP1 JNB SW2,$3 DEC @R0 MOV A,@R0 CJNE A,0FFH,FG1 MOV @R0,09H FG1:CJNE R0,SSZHAN1,WW12 MOV DISPLY,@R0 SJMP K2 WW12:CJNE R0,SSZHAN2,WW11 MOV DISPLY1,@R0 SJMP K2 WW11:CJNE R0,SSZHAN3,WW21 MOV DISPLY2,@R0 SJMP K2 WW21:MOV DISPLY3,@R0 K2:JB SW3,LP 。移位 LCALL DISP1 JNB SW3,$3 INC R0 MOV A,BITXT RL A JB SSB_END,BV MOV BITXT,A SJMP BV1 BV:MOV BITXT,01H BV1:CJNE R0,55H,LP MOV R0,SSZHAN1 LP:JB SW4,LP1 。退出溫度設(shè)定模式 LCALL DISP1 JNB SW4,$3 MOV A,TONG CJNE A,0,S_1 MOV STONG0_X,SSZHAN1 。保存0通道設(shè)定溫度 MOV STONG0_G,SSZHAN2 MOV STONG0_S,SSZHAN3 MOV STONG0_B,SSZHAN4 AJMP K4 S_1:CJNE A,1,S_2 MOV STONG1_X,SSZHAN1 。保存1通道設(shè)定溫度 MOV STONG1_G,SSZHAN2 MOV STONG1_S,SSZHAN3 MOV STONG1_B,SSZHAN4 AJMP K4 S_2:CJNE A,2,S_3 MOV STONG2_X,SSZHAN1 。保存2通道設(shè)定溫度 MOV STONG2_G,SSZHAN2 MOV STONG2_S,SSZHAN3 MOV STONG2_B,SSZHAN4 AJMP K4 S_3:MOV STONG3_X,SSZHAN1 。保存3通道設(shè)定溫度 MOV STONG3_G,SSZHAN2 MOV STONG3_S,SSZHAN3 MOV STONG3_B,SSZHAN4 AJMP K4。。溫度轉(zhuǎn)換命令。。。。 START_TEMP:LCALL reset 。18B20復(fù)位 MOV A,0CCH 。SKIP ROM LCALL write MOV R6,34H 。DELAY 104μS DJNZ R6,$ 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(hào)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(gè)位數(shù)BCD ORL A,TEMPLC