ssd.c.100826171408

avr基础程序大全

/*#include<iom16v.h>
#include<macros.h>
void main()
{
 	 //DDRA=DDRA|BIT(2);
	 //PORTA=PORTA|BIT(2);
	 
	 
	 DDRA=0xff;
	 PORTA=0XF0;
	 
	 
	 DDRB=0XFF;
	 PORTB=0XFE;
	 while(1);
	 
}*/
/*#include <iom16v.h>
#include <macros.h>
#define  uchar unsigned char
#define  uint  unsigned int
void delay(uint ms)
{
    uint i,j;
	for(i=0;i<ms;i++)
	   {
	   for(j=0;j<1141;j++);
       }
}
void main()
{
   uchar k;
   /*DDRA|=BIT(2);
   PORTA|=BIT(2);*/
   
  /* DDRA=0XFF;
   PORTA=0XFe;
   while(1)
   {
   for(k=0;k<8;k++)
   { 
   PORTA&=~BIT(k);
   delay(500);
   
   PORTA|=BIT(k);
   delay(500);
   }
   }
}
*/

/*程序使用PB口作为输出演示
  可以根据需要调整延时或者自行更改延时程序
  www.doflye.cn
  [e-mail]
  上海浩豚电子科技 整理
*/
#include <iom8515v.h>
#include <macros.h>

/* This seems to produce the right amount of delay for the LED to be
 * seen
 */
void Delay()
	{
	unsigned char a, b;

	for (a = 1; a; a++)
		for (b = 1; b; b++)
			;
	}

void LED_On(int i)
	{
	PORTA = ~BIT(i);	/* low output to turn LED on */
	Delay();
	}

void main()
	{
	int i;
	DDRA = 0xFF;	/* output */
	PORTA = 0x55;	/* all off */
    //PORTB = 0xaa;
	while (1)
		{
		
		/* forward march */
		for (i = 0; i < 8; i++)
			LED_On(i);
		/* backward march */
		for (i = 8; i > 0; i--)
			LED_On(i);
		/* skip */
		for (i = 0; i < 8; i += 2)
			LED_On(i);
		for (i = 7; i > 0; i -= 2)
			LED_On(i);
		}
	}