main.c

开发板外设接口实验（1～7）

/*
 *	main.c    -     demo of dip4 api  
 *	
 *	Author: 	li ming <[e-mail]>
 *	Date:		2008-4-16
 *	Copyleft:	http://www.lumit.org
 */


#include "dip4.h"
#include "seg7.h"

int main(void)
{		
	int i = 0;
	int value = 0;
	
	dip4_init();
	seg7_init();
	
	while(1)
	{
		for(i = 0; i < 4; i++)
		{
			if(dip4_is_up(i))
				value |= 1 << i;
			else
				value &= ~(1 << i);
				
			seg7_display_num(value);
		}
	}
	
	return 0; 
}

void __rt_entry(void)
{
	main();	
}