event.c

MANTIS是由科罗拉多大学开发的传感器网络嵌入式操作系统。 这是mantis的0.9.5版本的源码。

//  This file is part of MANTIS OS, Operating System
//  See http://mantis.cs.colorado.edu/
//
//  Copyright (C) 2003,2004,2005 University of Colorado, Boulder
//
//  This program is free software; you can redistribute it and/or
//  modify it under the terms of the mos license (see file LICENSE)

/// Event 

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>

#include "event.h"

#define PORT 1629
#define MAXDATASIZE 256

int sockfd;  

int event_init() {

   struct hostent *he;
   struct sockaddr_in server_addr; // connector's address information 

   if ((he=gethostbyname("127.0.0.1")) == NULL) {  // get the host info 
      perror("event_init: gethostbyname");
      exit(1);
   }

   if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
      perror("event_init: socket");
      exit(1);
   }

   server_addr.sin_family = AF_INET;    // host byte order 
   server_addr.sin_port = htons(PORT);  // short, network byte order 
   server_addr.sin_addr = *((struct in_addr *)he->h_addr);
   memset(&(server_addr.sin_zero), '\0', 8);  // zero the rest of the struct 

   if (connect(sockfd, (struct sockaddr *)&server_addr,
	       sizeof(struct sockaddr)) == -1) {
      perror("event_init: connect");
      exit(1);
   }

   return sockfd;
}

void SendEvent(int sock, Event *ev)
{
   send(sock, &ev->eid, sizeof(uint32_t), 0);
}

uint8_t mos_event_send(uint8_t *data, uint8_t size) {
   printf("Byte[0]: %x\nByte[1]: %x\n", data[0], data[1]);
   printf("Size: %d\n", size);
   if(send(sockfd, data, size, 0) == -1)
      perror("event_send: send");

   return 0;
}