dl._c

AVR单片机控制发光二极管的源代码

#include<iom8v.h>		//包含ATMEGA8的头文件
#include<macros.h>		//包含一些常用宏的定义
//#define osccal 0xaa//内部RC 校正常数
#define fosc 8000000 //晶振8MHZ
#define baud 4800 //波特率
#define osccal_addr         0x1ff
//内部晶体震荡器校正字存放地址
#define uint unsigned int
#define uchar unsigned char

uint j;
uchar t;
///////////////延时
void delay(unsigned int x)

{
   while(x-->0)
    {
    for(j=0;j<5;j++)
    {;}
    }
}

unsigned char EEPROM_read(unsigned int uiAddress)
{while(EECR&(1<<EEWE));
 EEAR=uiAddress;
 EECR|=(1<<EERE);
 return EEDR;
}


void main(void)
{ 
   delay(200);
   OSCCAL=EEPROM_read(osccal_addr);   //D￡?y?ú2?RC??μ′μ??μ?ê
   DDRB=0xfe;
    DDRC=0xff;
	
	PORTC&=~(1<<5);
	while(1)
	{
	t=(PINB&0x01);
	if(t==0)
	{
	PORTC|=(1<<5);
	delay(50000);
	}
	else
	PORTC&=~(1<<5);
	delay(50000);
	}
}