lpc_can.h

给大家提供一个在inram/exram中调试的示例,在周公的lpc2200上调试过.

#ifndef __LPC_SPI_H
#define __LPC_CAN_H

/***********************************************************************
 *         BU MMS China, Philips Semiconductor Software Support
 *         Embest info&Tech Co. Software Support
 *---------------------------------------------------------------------------
 * The software is delivered "AS IS" without warranty or condition of any
 * kind, either express, implied or statutory.  Everybody can use it as 
 * it is opened and without copyright. We will not take any law responsibility
 * for any problem produced by using this software.
 *---------------------------------------------------------------------------
 *    File name:	LPC_CAN.h                                                            
 *    Description:	Define CAN structure and relative micro
 *
 *    History:
 *    1. Date: 		Nov 20, 2004
 *       Author: 	Shawn Zhang
 *       Description: Create
 *
 *	$Revision: 1.0 $
 **********************************************************************/

#include "LPC_Base.h"
#include "LPC_Type.h"

#include "LPC_SysControl.h"


#define CAN_MAXDEVNUM     4				// Max device number

#define CAN_MAXSPEED        1000000		// CAN max speed: 1M bits/s
#define CAN_ADDR_OFFSET  0x4000

// Default value of TSEG1/2
#define TSEG1_VALUE 0xC
#define TSEG2_VALUE 0x1

/* CAN mode descriptions */
#define MOD_RM		0x1		// Reset Mode
#define MOD_LOM		0x2		// Listen Only Mode
#define MOD_STM		0x4		// Self Test Mode
#define MOD_TPM		0x8		// Tx Priority Fields
#define MOD_SM		0x10	// Sleep Mode
#define MOD_RPM		0x20	// Reverse Polarity Mode
#define MOD_TM		0x80	// Test Mode

/* Bus Timing bit descriptions */
#define BTR_BRP_BIT		0
#define BTR_SJW_BIT		14
#define BTR_TSEG1_BIT	16
#define BTR_TSEG2_BIT	19
#define BTR_SAM_BIT		23

/* Device number */
typedef enum {
  CAN1 = 1,
  CAN2,
  CAN3,
  CAN4
} LPC_CAN_Channel_t;

// Type definition to hold a CAN message
typedef struct
{
  unsigned int Frame; 	// Bits 16..19: DLC - Data Length Counter
                      		// Bit 30: Set if this is a RTR message
                     		// Bit 31: Set if this is a 29-bit ID message
  unsigned int MsgID;	// CAN Message ID (11-bit or 29-bit)
  unsigned int DatA;	// CAN Message Data Bytes 0-3
  unsigned int DatB;	// CAN Message Data Bytes 4-7
 } LPC_CAN_MSG_t;

 #endif  // __LPC_CAN_H