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Switch 的代码
switch lamp.asm
ORG 00H
START: JB P1.7,LIG ;如果开关闭合,则点亮LED
CLR P1.0 ;否则熄灭LED
SJMP START
LIG: SETB P1.0
SJMP START
END
multi switch.asm
ORG 00H
START: MOV A,P1 ;读取P1口数据
SWAP A ;交换A中高四位与低四位的位置
ORL A,#0F0H ;与0F0H相或
MOV P1,A ;将开关状态送LED显示
SJMP START
END
lc-switch.h
/*
* Copyright (c) 2004-2005, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted pr
nb_switch.c
/* nb_switch.c - nb_switch */
#include
#include
#include
#include
SYSCALL gettime(unsigned long *);
/*---------------------------------------------