main._c

很实用的单片机例程

//开发环境：HJ-1G HJ-3G 开发板+AVR增强包套装
//芯片：ATMEGA16A
//编译器：ICCV7
//编写：慧净电子
//网址：WWW.HLMCU.COM   QQ:121350852
//点亮HJ-1G/3G开发板上的8个LED灯前后流动
#include <iom16v.h>
#include <macros.h>
//#include "iom16v.h"
//#include "macros.h"
void Delay()
	{
	unsigned char a, b;
    for (a = 1; a; a++)
		for (b = 1; b; b++)
			;
	}

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

void main()
	{

	int i;
	DDRB = 0xFF;	/* output */
	PORTB = 0x55;	/* all off */	
	//PORTA|=BIT(PA4);	//PA4输出高电平，WE拉高
	//PORTA&=~BIT(PA4);	//PA4输出低电平，关掉HC573
	//DDRC|=BIT(PC7);		//PC7设置为输出状态
    //PORTC&=~BIT(PC7);	//PC7输出低电平，关掉HC573
	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);
		}
	}