#include "reg52.h"
sbit RELAY_ON = P2^0; //继电器控制脚对应的CPU管脚P2.4
/*-------------------------------------------------
功能:1MS延时子程序
-------------------------------------------------*/
void Delay_xMs(unsigned int x)
{
unsigned int i,j;
for( i =0;i < x;i++ )
{
for( j =0;j<100;j++ );
}
}
void main()
{
RELAY_ON=0;
while(1)
{
Delay_xMs(500);
RELAY_ON=~RELAY_ON;
}
}
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