serial.h

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)

/**
  Project Mantis
  File:   serial.h
  Authors: Jeff Rose
  Date:   02-01-04
  
**/

/** @file serial.h
 * @brief Mac layer built on top of serial uart devices.
 * @author Jeff Rose
 * @date 02/01/2004
 */

#ifndef _SERIAL_H_
#define _SERIAL_H_

#ifndef _BOOT_
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <termios.h>
#include <unistd.h>

#endif
#include "com.h"

#if defined(USB_SERIAL)
#define DEFAULT_BAUDRATE B115200
#else
#define DEFAULT_BAUDRATE B57600
//#define DEFAULT_BAUDRATE B38400
//#define DEFAULT_BAUDRATE B19200
#endif

#define DEFAULT_SERIAL_DEV "/dev/ttyS0"

/* Define the ioctl request flags. */
#define BAUD_RATE 0
#define PARITY    1

/** @brief This will initialize the filedescriptor for the serial device
 *
 */
void serial_init_fd();
/** @brief Setup the serial port and register with the com layer. 
 *
 * NOTE: -sdev [serial device] can be used to change the serial device.
 */
uint8_t serial_init();
/** @brief Send the buffer out over the serial port. 
 * @param buf Buffer to use
 */
uint8_t serial_send(comBuf *buf);
/** @brief See full description.
 * 
 * In linux this function is very important because we don't
 * have any low power functionality, but you still must set
 * to listen mode if you want to get packets. 
 */
uint8_t serial_mode(uint8_t mode);
/** @brief Generic control function for doing things like changing the
 * properties of the serial connection etc... 
 */
uint8_t serial_ioctl(uint8_t request, va_list ap);
/** @brief get the current mode of the serial device
 *
 */
uint8_t serial_get_mode();
/** @brief Close the serial device
 * this command returns control of the serial back to the system.
 */
void serial_close ();
void serial_block(); 
void serial_unblock();
#endif