loopback.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)

#include "mos.h"
#include "mutex.h"
#include "dev.h"

static uint8_t mode;

uint8_t bit_bucket;

uint8_t dev_mode_DEV_LOOPBACK(uint8_t new_mode)
{
   return DEV_OK;
}

uint8_t dev_ioctl_DEV_LOOPBACK(int8_t request, ...)
{
   return DEV_BAD_IOCTL;
}

uint16_t dev_write_DEV_LOOPBACK(const void *buf, uint16_t c)
{
   uint16_t i;
   
   for(i = 0; i < c; i++) {
      bit_bucket = ((uint8_t *)buf)[i];
   }

   return DEV_OK;
}

uint16_t dev_read_DEV_LOOPBACK(void *buf, uint16_t c)
{
   uint16_t i;
   
   for(i = 0; i < c; i++) {
      ((uint8_t *)buf)[i] = (uint8_t)i;
   }
   
   return DEV_OK;
}

void dev_loopback_init(void)
{
   mode = DEV_MODE_OFF;
//   mos_mutex_init(&loopback_mutex);
}