led.c~

实现了一个简单的web服务器

/***********************************************************************
 * Filename     : testApp.c                                            *
 * Program      : hyper104 led&key test App                            *
 * Copyright    : Copyright (C) 2001, newboder                         *
 * Author       : newboder <[e-mail]> *
 * Description  : StrongArm externd base boad interface test App       *
 * Created at   : 2002.05.06                                           *
 * Based on     :                                                      *
 * Modified by  :                                                      *
 * Modified at  :                                                      *
 ***********************************************************************/

#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
#include "server.h"

int fd;

static char *dev_name = "/dev/keypad";

/*
int main(int argc, char **argv)
{
	int data = 0,i;

	for(i=1;i<=8;i++)
	{
		data = i;
		printf("Write %d LED\n",data);
		led_on(data);
		sleep(2);
	}
	close( fd );
	return 0;
}*/

int led_on(int num)
{
	fd = open( dev_name , O_RDWR );
	if( !(fd >=0) )
	{
		printf("%s file open failed\n", dev_name );
		return -1;
	}
	write( fd, (const char *)&num, sizeof((const char )num) ); 
	return 0;
}

int led_status(int led_no) 
{
	return LED_FALSE;
}