drv_can.h

CAN开发例子

/**********************************************************************/
/*                                                                    */
/* File name: drv_can.h                                               */
/*                                                                    */
/* Since:     2005-Jan-19                                             */
/*                                                                    */
/* Version:   PICos18 v2.00                                           */
/*            Copyright (C) 2003, 2004, 2005 Pragmatec.               */
/*            CAN driver v1.00 (initial release)                      */
/*                                                                    */
/* Author:    Designed by Pragmatec S.A.R.L.        www.pragmatec.net */
/*            MONTAGNE Xavier [XM]      [e-mail] */
/*                                                                    */
/* Purpose:   PIC18 CAN peripheral management.                        */
/*            It allows task tosend data at the send time through a   */
/*            dedicated FIFO, and to wait for a certain CAN frame.    */ 
/*                                                                    */
/* Distribution: This file is part of PICos18.                        */
/*            PICos18 is free software; you can redistribute it       */
/*            and/or modify it under the terms of the GNU General     */
/*            Public License as published by the Free Software        */
/*            Foundation; either version 2, or (at your option)       */
/*            any later version.                                      */
/*                                                                    */
/*            PICos18 is distributed in the hope that it will be      */
/*            useful, but WITHOUT ANY WARRANTY; without even the      */
/*            implied warranty of MERCHANTABILITY or FITNESS FOR A    */
/*            PARTICULAR PURPOSE.  See the GNU General Public         */
/*            License for more details.                               */
/*                                                                    */
/*            You should have received a copy of the GNU General      */
/*            Public License along with gpsim; see the file           */
/*            COPYING.txt. If not, write to the Free Software         */
/*            Foundation, 59 Temple Place - Suite 330,                */
/*            Boston, MA 02111-1307, USA.                             */
/*                                                                    */
/*          > A special exception to the GPL can be applied should    */
/*            you wish to distribute a combined work that includes    */
/*            PICos18, without being obliged to provide the source    */
/*            code for any proprietary components.                    */
/*                                                                    */
/* History:                                                           */
/* 2005/01/19 [XM]  Create this file.                                 */
/*                                                                    */
/**********************************************************************/


#ifndef _CAN_DRV_H_
#define _CAN_DRV_H_

#include "pro_man.h"
#include "even_man.h"
#include "alarm.h"

#ifndef NULL
#define NULL 0
#endif

/*****************************************************
 * Definition dedicated to the local functions.
 ****************************************************/
#define CAN_MSG_SENT        0x02
#define CAN_FREE            0x00
#define CAN_FULL            0x01
#define CAN_EMPTY           0x00
#define TRUE                0x01
#define FALSE               0x00
#define TX_MESSAGE          0x01
#define RX_MESSAGE          0x00 
	
struct _CAN_frame {
   unsigned char SIDH;
   unsigned char SIDL;
   unsigned char length;
   unsigned char data[8];
   unsigned char CallerID;
   unsigned char state;
   struct _CAN_frame *next;
};
typedef struct _CAN_frame CAN_message_t, *CAN_message_tRef;

#define          CAN_freeMsg(x)        x.state = CAN_FREE;

StatusType       CAN_enqMsg(CAN_message_tRef toEnqueue);
CAN_message_tRef CAN_deqMsg(void);
StatusType       CopyHard2FrameBuffer(void);
StatusType       CopyFrameBuffer2Hard(void);
StatusType       WriteCANBuffer(void);
StatusType       ReadCANBuffer(void);
StatusType       CAN_RCV_Register(CAN_message_tRef toEnqueue);
void             CAN_config(void);

#endif /* _CAN_DRV_H_ */

/* End of File : drv_can.h */