单片机程序如下:
ORG 0000H
SJMP
ORG 0003H
LJMP INT
ORG 0025H
MAIN: MOV SP,#60H
MOV 20H,#00H
MOV 21H,#08H
MOV 29H,#0FEH
LCALL ZIJIAN
LCALL READTHTL
LCALL TESTRANGE
LCALL DISP
SETB INT0
SETB EX0
SETB EA
LCALL GET_TEMP
LCALL TURN
LCALL DISPLAY
CLR C
MOV A,24H
CJNE A,2EH,LOOP1
SJMP HOTTING
LOOP1: JC HOTTING
MOV A,24H
CLR C
CJNE A,2DH,LOOP2
SJMP STOPHOT
LOOP2: JNC STOPHOT
SJMP KEEP
HOTTING: CLR P3.1
CLR P1.5
SETB P1.6
KEEP: SJMP
STOPHOT: SETB P3.1
SETB P1.5
CLR P1.6
SJMP
ZIJIAN: MOV 30H,#08H
MOV