【正文】 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 。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 。比較溫度值。....... 。TEMPLC HI=個(gè)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 。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 。 MOV DPTR,TEMPDOTTAB MOVC A,A+DPTR MOV TEMPLC,A 。TEMPHC HI=符號(hào)位 MOV TEMPHC,0BH SJMP TEMPC11 TEMPC1:MOV TEMPHC,0AH 。 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 。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。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 。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,$3 MOV TONG,0 SETB XJ CLR ET0 CLR TR0 AJMP 5 1:JB TONG1,2 。SKIP ROM LCALL write MOV R6,34H 。 read_temp:LCALL reset 。DELAY 104μS DJNZ R6,$ RET。DELAY 104μS DJNZ R6,$ MOV A,44H 。18B20復(fù)位 MOV A,0CCH 。溫度轉(zhuǎn)換命令。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 。小數(shù)位送熄滅符 MOV DISPLY1,SSZHAN2 MOV DISPLY2,SSZHAN3 MOV DISPLY3,SSZHAN4 AJMP INT_1OUT NEXT1:JNB SSB_G,NEXT2 MOV DISPLY,SSZHAN1 MOV DISPLY1,0AH 。2S到標(biāo)志 T0IT1:POP PSW RETI INT_1:MOV TL1,0B0H MOV TH1,3CH DJNZ 50H,INT_1OUT MOV 50H,2 CPL F01 。溫度達(dá)到上限值? LJMP BAOJINBZ 。BCD碼刷新 LCALL DISP1 。讀取轉(zhuǎn)換溫度值 LCALL DISP1 LCALL cont_temp 。顯示 LCALL START_TEMP 。 MAIN:NOP NOP LCALL K1 。保存溫度初始上限值 MOV S_G,05H MOV S_S,02H MOV S_B,01H SJMP MAIN 。100MS SJMP INIT ERROR:NOP LJMP START NOP INIT:NOP SETB ET0 。20MS MOV TL0,0E0H MOV TL1,0B0H 。串行口工作在方式0 MOV TMOD,11H 。 START:MOV SP,0D0H CLSRAM:MOV R0,20H MOV R1,60H CLSRAM1:MOV R0,00H 。初始化。轉(zhuǎn)T1中斷服務(wù) ORG 100H。轉(zhuǎn)初始化 ORG 000BH LJMP T0IT 。18B20的I/O口。TONG0～ TONG3通道0～通道 3選擇鍵 TONG1 BIT TONG2 BIT TONG3 BIT LED0 BIT 。進(jìn)入設(shè)定溫度模式 XUNJIAN BIT 。選擇設(shè)定溫度的位 SW4 BIT 。設(shè)定溫度加1 SW2 BIT 。T0定時(shí)2S到標(biāo)志 F01 BIT 。閃爍循環(huán)標(biāo)志 BJ0 BIT BJ1 BIT BJ2 BIT BJ3 BIT XJ BIT 。BJ0～BJ3報(bào)警標(biāo)志(0～3通道) BITXT DATA 21H 。51H～54H顯示值存放單元(調(diào)溫度閃爍時(shí)再送 回顯示單元) SSZHAN2 DATA 52H SSZHAN3 DATA 53H SSZHAN4 DATA 54H S_X DATA