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………………………………
sbit key1=P3^2; //布防
sbit key2=P3^3; //撤防
sbit key3=P3^4; //紧急报警
sbit BUZZ=P0^4; //蜂鸣器
sbit rsd=P2^4; //热释电输入
sbit yanwu=P2^5;
sbit LED_B=P2^3; //布防指示灯
sbit LED_S=P2^0; //发送消息指示灯
uint TIME_50ms=0; //计时的最小分辨率50ms
uint time_continue;
uchar TIME_ALAM=0;
bit flag=0,flag_BF=0;
bit flag_time_start=0;
bit again=0;
bit flag_alam;
bit SOS;
bit flag_continue;
bit into_BF=0;
void delay(uint z)//延时函数
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
………………………………………………………………以上省略了一些无关定义初始化。以下程序的如何计时，延时多少是我不明白的。
void TIME()
{
if(flag==0)
{
delay(50);
TIME_50ms++;
if(TIME_50ms%10==0)
LED_B=!LED_B;
if(TIME_50ms>=400)
{
TIME_50ms=0;
flag_BF=1;
LED_B=0;
flag_time_start=0;
again=1;
}
}
else
{
delay(50);
TIME_50ms++;
if(TIME_50ms%10==0)
{
LED_B=!LED_B;
if(flag_alam==1)
{
if(flag_continue==0)
{
flag_continue=1;
time_continue=TIME_50ms;
}
BUZZ=!BUZZ;
if(TIME_50ms>=time_continue+100)
{
BUZZ=1;
flag_continue=0;
flag_alam=0;
time_continue=0;
}
}
}
if(TIME_50ms>=1200)
{
LED_B=0;
TIME_50ms=0;
flag_time_start=0;
again=1;
}
}
}
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