delay_5ms.h

来自「以51单片机为处理器」· C头文件 代码 · 共 25 行

//5MS延时程序
//#include<reg51.h>
//#include<intrins.h>
//#define  LOAD_HIGH 0xEC
//#define  LOAD_LOW  0x78

void delay_5ms()
{ 
unsigned char second_count=1;
 TMOD=0x01;
 TH0=0xec;
 TL0=0x78;
 TF0=0;          
 TR0=1;         
 for(;;)
{
 TH0=0xec;
 TL0=0x78;
 while(!TF0);
 second_count--;
 if(!second_count)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
 break;            //second_count为计数软中断；
 TF0=0;
} 
}