flick.c

来自「手把手教你单片机」· C语言 代码 · 共 38 行

#include <reg52.h>
typedef  unsigned char   uint8;
typedef  unsigned int    uint16;

sbit ENLED = P1^4;
sbit ADDR0 = P1^0;
sbit ADDR1 = P1^1;
sbit ADDR2 = P1^2;
sbit ADDR3 = P1^3;
sbit  LED  = P0^0;

main()
{
	uint8  counter;

	ENLED = 0;
	ADDR0 = 0; ADDR1 = 1; ADDR2 = 1; ADDR3 = 1;
	TMOD = 0x01;
	TH0 = 0xB8;
	TL0 = 0x00;
	TR0 = 1;
	while(1)
	{
		  if(1 == TF0)
		  {
		  		TF0 = 0;
		        	TH0 = 0xB8;
				TL0 = 0x00;
		  		counter++;
	       }
		   if(50 == counter)
		   {
		   		counter = 0;
		   		LED = ~LED;
		   }
	}
}