基于18B20的单片机课程设计报告(含汇编程序)(7)

基于18b20的电子温度计课程设计,可用两位小数显示开式,华氏,摄氏温标,三个按键。可设置上限,下限报警。程序均经过上电调试。(不含硬件图,仅供参考。)

ORG 000BH LJMP IT0P

ORG 0060H

MAIN: MOV SP,#77H

SETB IT0 SETB EX0

MOV DPTR,#TABLE MOV R0,#38H MOV R1,#30H CLEAR: MOV @R1,#00H INC R1

DJNZ R0,CLEAR

MOV 60H,#50H MOV 61H,#63H MOV LOCAT,#34H MOV T_ALARM,#30 MOV L_ALARM,#18 MOV INTEG,#25

LOOP: CLR EA LCALL INIT_1820 LCALL GET_TEMPER LCALL DATA_PROC

JNB P3.1,F_EN AJMP F_NOT F_EN: LCALL DISPLAY JNB P3.1,F_EN MOV A,LOCAT XCH A,60H XCH A,61H MOV LOCAT,A

F_NOT: CLR C CLR EA

MOV A,L_ALARM CJNE A,INTEG,NEXTP LJMP NEXT2 NEXTP: JNC LALARM SETB P2.4