j1939tra.h

在Freescale16位单片机MC9s12dp256上移植了J1939源码和操作系统（ucOSII）。

/******************************************************************************
*
* File Name:      J1939TRA.H
*
* Description:    Transport protocolls
*                 
*
* Comments:       
*                 
*
* Version  Date           Author           Comments
* -------  -----------   --------------   ------------------------------
*	  0.9	 18.12.98	  Ft           				 Create
*    2.0  18.06.2001 Ma                   new buffer concept and documentation
*                                         for doxygen
*
* Copyright (c) 1998, 1999, 2000, 2001 Vector Informatik GmbH
*****************************************************************************/
#ifndef _J1939TRA_H_
#define _J1939TRA_H_

/*! \brief BAM state machine states and Connection mode data transfer states */
#define CMDT_STATE_CLOSE   0
#define BAM_STATE_CLOSE    0
#define BAM_RX_STATE_DATA  1
#define BAM_TX_STATE_DATA  2
#define BAM_TX_STATE_WAIT  3
#define CMDT_RX_STATE_OPEN 4
#define CMDT_RX_STATE_DATA 5
#define CMDT_TX_STATE_OPEN 6
#define CMDT_TX_STATE_DATA 7

#define TPCM_RTS 16
#define TPCM_CTS 17
#define TPCM_EndOfMsgAck 19
#define TPCM_ABORT 255
#define TPCM_BAM 32

/*! \brief Timebases of the different TP protocols */
#define CMDT_TIMEOUT_4  550  /*!<  550ms timeout after CTS with 0 packets */
#define CMDT_TIMEOUT_3 1250  /*!<  1250ms timeout between data and next CTS */
#define CMDT_TIMEOUT_2 1250  /*!< 1250ms timeout between RTS/CTS and next data */
#define CMDT_TIMEOUT_1  250  /*!<  250ms timeout between two data packets */
#define BAM_RX_TIMEOUT  250	/*!< 250ms BAM timeout */
#define BAM_TX_TIMEOUT   50	/*!<  50ms BAM timeout between two messges */

/*! \brief Definition of the Transport control structure */
struct VJ1939Transport
{
  unsigned char mState;	    /*!< BAM_STATE_CLOSE, BAM_RX_STATE_DATA */
  unsigned char mSource;	    /*!< source/dest. address */
  unsigned short mTimer;     /*!< timer for timeout */
  unsigned short mBytes;     /*!< total number of bytes */
  unsigned char mSequence;   /*!< actual sequence number */
  unsigned char mPackets;    /*!< total number of packets */
  unsigned char mPToSend;    /*!< packets to send/receive between CTS */
  unsigned char mRxPGTable;  /*!< PG receive table */
};

#endif /* _J1939TRA_H_ */

/*! \file
    \brief Module header file for the Tranport protocol handling
*/