【正文】 H SETB C L0091:MOV 39H, A MOV A, 29H ADDC A, 1 MOV 38H, A AJMP LAST2 L008:JC L009 MOV A, 39H SUBB A, 0 MOV 39H, A MOV A, 38H SUBB A, 2 MOV 38H, A AJMP LAST2 L006:JC L007 CJNE A, 65, L010 L011:CLR C SUBB A, 41H CJNE A, 3, L012 L013:MOV A, 30H ADD A, 2 JNB , L00131 ANL A, 0FH SETB C L00131:MOV 39H, A MOV A, 29H ADDC A, 1 MOV 38H, A AJMP LAST2 L012:JC L013 MOV A, 39H SUBB A, 0 MOV 39H, A MOV A, 38H SUBB A, 2 MOV 38H, A AJMP LAST2 L010:JC L011 CJNE A, 90, L016 L017:CLR C SUBB A, 41H CJNE A, 2, L014 L015:MOV A, 30H ADD A, 0 JNB , L00151 ANL A, 0FH SETB C L00151:MOV 39H, A MOV A, 29H ADDC A, 1 MOV 38H, A AJMP LAST2 L014:JC L015 CLR C MOV A, 38H SUBB A, 1 MOV 38H, A AJMP LAST2 L016:JC L017 LAST2:POP PSW POP ACC RET 。0T25, 差值小于3度 DA A JNB , L0051 ANL A, 0FH SETB C L0051:MOV 39H, A MOV A, 29H ADDC A, 1 MOV 38H, A AJMP LAST2LAST02: AJMP LAST2 L004:JC L005 MOV A, 39H SUBB A, 0 DA A MOV 39H, A JNC L0041 DEC 38H L0041:MOV A, 38H SUBB A, 2 。設溫實溫,則跳出 MOV A, 29H MOV 41H, A MOV A, 38H CJNE A, 25, L002 L003:CLR C 。顯示位數為2位 MOV R0, 7AH MOV 78H, 00H MOV 79H, 00H MOV 7AH, 00H KK: LCALL DIR LCALL KEY1 LOOP1:CJNE A, 11, LOOP2 AJMP LAST0 LOOP2:CJNE A, 12, LOOP3 LJMP LAST3 LOOP3: CJNE A, 10, L4 MOV A, 00H L4: MOV R0, A LCALL DIR DEC R0 DJNZ R7, KK SETB 01H LAST0:JNB 01H, KK LOOP4:LCALL KEY1 CJNE A, 12, LOOP5 AJMP LAST3 LOOP5:CJNE A, 11, LOOP4 LAST1:LCALL DIR LCALL MUN LCALL JD LCALL BIJIAO LAST3:POP PSW POP ACC RETI 。*****************************中斷服務程序********************************** 。小數點。9,A,B,C,D,E,F,滅,p. TAB1:DB40H,79H,24H,30H,19H,12H,02H,78H,00H,10H, 。***************************常數表格區(qū)********************************************** TAB:DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H 。關藍燈 SETB 。調用數碼管顯示子程序 LCALL BIJIAO LCALL XIAOYU LCALL JIXIAN JNB DEYU ,LOOP CLR 。得的溫度 LCALL DISPLAY 。位將28H中的低4位移入29H中的高4位,這。, 。慮用網站提供的兩位數碼管來顯示溫度 。RAM區(qū)單元個數 ML: MOV R0, 00H INC R0 DJNZ R7, ML CLR IT0 MAIN:LCALL GET_TEMPER 。 MOV R0, 20H 。數碼管小數存放內存位置 ORG 0000H AJMP START ORG 0003H AJMP PITO ORG 0030H START: CLR CLR CLR SETB MOV R4, 00H MOV SP, 60H 。數碼管個位數存放內存位置B_bit EQU 7Ah 。水溫高于最高溫度DILE EQU 48H 。設溫實溫DEYU EQU 46H 。是否檢測到DS18B20標志位DAYU EQU 44H 。用于保存讀出溫度的低8位TEMPER_H EQU 28H