relay.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)

/**************************************************************************/
/* File:    test.c                                                        */
/* Author     Jeff Rose & Brian Shucker: rosejn & [e-mail] */
/*   Date: 03/09/04                                                       */
/*                                                                        */
/* Radio relay for testing the mnet network stack                         */
/**************************************************************************/

#include "mos.h"

#include "msched.h"  // MANTIS scheduler (gives us start)
#include "com.h"
#include "mos.h"
#include "led.h"

#include "uart.h"

comBuf *packet;

void relay(void)
{
   IF_SET set;

   com_mode(IFACE_RADIO, IF_LISTEN);
   com_mode(IFACE_SERIAL, IF_LISTEN);

   while(1) {
      IF_ZERO(&set);
      IF_SET(IFACE_RADIO, &set);
      IF_SET(IFACE_SERIAL, &set);

      mos_led_display(1);
      com_select(&set, COM_BLOCK);
      mos_led_display(2);

      if(IF_ISSET(IFACE_RADIO, &set)) {
	 packet = com_recv(IFACE_RADIO);
	 
	 if(packet != NULL) {
	    com_send(IFACE_SERIAL, packet);
	    com_free_buf(packet);
	 }
      } else if(IF_ISSET(IFACE_SERIAL, &set)) {
	 packet = com_recv(IFACE_SERIAL);
	 
	 if(packet != NULL) {
	    packet->data[0]++;
	    com_send(IFACE_SERIAL, packet);
	    com_free_buf(packet);
	 }
      }
   }
}

void start(void)
{
   mos_thread_new(relay, 128, PRIORITY_NORMAL);
}