73x_can.h

国外LPC2000系列的一些源程序,请大家快快下载

/******************** (C) COPYRIGHT 2005 STMicroelectronics ********************
* File Name          : 73x_can.h
* Author             : MCD Application Team
* Date First Issued  : 09/27/2005 :  V1.0
* Description        : This file contains all the functions prototypes for the
*                      CAN bus software library.
**********************************************************************************
* History:
* 09/27/2005 :  V1.0
**********************************************************************************
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH
* CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT
* OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
* OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
* CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*********************************************************************************/

/* Define to prevent recursive inclusion ---------------------------------------*/

#ifndef __73x_CAN_H
#define __73x_CAN_H

/* Includes --------------------------------------------------------------------*/
#include "73x_map.h"

/* Exported types --------------------------------------------------------------*/

/* CAN Init structure define */
typedef struct
{
    u8  CAN_Mask;
    u32 CAN_Bitrate;
}CAN_InitTypeDef;

/* Exported constants ----------------------------------------------------------*/
/* Standard bitrates available*/
enum
{
	CAN_BITRATE_100K,
	CAN_BITRATE_125K,
	CAN_BITRATE_250K,
	CAN_BITRATE_500K,
	CAN_BITRATE_1M
};

/* Control register*/
#define CAN_CR_TEST			0x0080
#define CAN_CR_CCE			0x0040
#define CAN_CR_DAR			0x0020
#define CAN_CR_EIE			0x0008
#define CAN_CR_SIE			0x0004
#define CAN_CR_IE			0x0002
#define CAN_CR_INIT			0x0001

/* Status register */
#define CAN_SR_BOFF			0x0080
#define CAN_SR_EWARN			0x0040
#define CAN_SR_EPASS			0x0020
#define CAN_SR_RXOK			0x0010
#define CAN_SR_TXOK			0x0008
#define CAN_SR_LEC			0x0007

/* Test register*/
#define CAN_TESTR_RX			0x0080
#define CAN_TESTR_TX1			0x0040
#define CAN_TESTR_TX0			0x0020
#define CAN_TESTR_LBACK		        0x0010
#define CAN_TESTR_SILENT		0x0008
#define CAN_TESTR_BASIC		        0x0004

/* IFn / Command Request register*/
#define CAN_CRR_BUSY			0x8000

/* IFn / Command Mask register*/
#define CAN_CMR_WRRD			0x0080
#define CAN_CMR_MASK			0x0040
#define CAN_CMR_ARB			0x0020
#define CAN_CMR_CONTROL		        0x0010
#define CAN_CMR_CLRINTPND		0x0008
#define CAN_CMR_TXRQSTNEWDAT		0x0004
#define CAN_CMR_DATAA			0x0002
#define CAN_CMR_DATAB			0x0001

/* IFn / Mask 2 register*/
#define CAN_M2R_MXTD			0x8000
#define CAN_M2R_MDIR			0x4000

/* IFn / Arbitration 2 register*/
#define CAN_A2R_MSGVAL			0x8000
#define CAN_A2R_XTD			0x4000
#define CAN_A2R_DIR			0x2000

/* IFn / Message Control register*/
#define CAN_MCR_NEWDAT			0x8000
#define CAN_MCR_MSGLST			0x4000
#define CAN_MCR_INTPND			0x2000
#define CAN_MCR_UMASK			0x1000
#define CAN_MCR_TXIE			0x0800
#define CAN_MCR_RXIE			0x0400
#define CAN_MCR_RMTEN			0x0200
#define CAN_MCR_TXRQST			0x0100
#define CAN_MCR_EOB 			0x0080


/* Wake-up modes*/
enum
{
	CAN_WAKEUP_ON_EXT,
	CAN_WAKEUP_ON_CAN
};


/* CAN message structure*/
typedef struct
{
	u32 IdType;
	u32 Id;
	u8 Dlc;
	u8 Data[8];
} canmsg;

/* Message ID types*/
enum
{
	CAN_STD_ID,
	CAN_EXT_ID
};

/* Message ID limits*/

#define CAN_LAST_STD_ID	((1<<11) - 1)
#define CAN_LAST_EXT_ID	((1L<<29) - 1)

/* Exported functions ------------------------------------------------------- */

void CAN_Init (CAN_TypeDef *CANx, CAN_InitTypeDef *CAN_InitStruct);
void CAN_DeInit (CAN_TypeDef *CANx);
void CAN_StructInit(CAN_InitTypeDef *CAN_InitStruct);
void CAN_SetBitrate(CAN_TypeDef *CANx, u32 bitrate);
void CAN_SetTiming(CAN_TypeDef *CANx, u32 tseg1, u32 tseg2, u32 sjw, u32 brp);
void CAN_SetUnusedMsgObj(CAN_TypeDef *CANx, u32 msgobj);
void CAN_SetTxMsgObj(CAN_TypeDef *CANx, u32 msgobj, u32 idType);
void CAN_SetRxMsgObj(CAN_TypeDef *CANx, u32 msgobj, u32 idType, u32 idLow, u32 idHigh, bool singleOrFifoLast);
void CAN_InvalidateAllMsgObj(CAN_TypeDef *CANx);
void CAN_ReleaseMessage(CAN_TypeDef *CANx, u32 msgobj);
u32  CAN_SendMessage(CAN_TypeDef *CANx, u32 msgobj, canmsg* pCanMsg);
u32  CAN_ReceiveMessage(CAN_TypeDef *CANx, u32 msgobj, bool release, canmsg* pCanMsg);
void CAN_WaitEndOfTx(CAN_TypeDef *CANx);
u32 CAN_BasicSendMessage(CAN_TypeDef *CANx, canmsg* pCanMsg);
u32 CAN_BasicReceiveMessage(CAN_TypeDef *CANx, canmsg* pCanMsg);
void CAN_EnterTestMode(CAN_TypeDef *CANx, u8 mask);
void CAN_EnterInitMode(CAN_TypeDef *CANx, u8 mask);
void CAN_LeaveInitMode(CAN_TypeDef *CANx);
void CAN_LeaveTestMode(CAN_TypeDef *CANx);
void CAN_ReleaseTxMessage(CAN_TypeDef *CANx, u32 msgobj);
void CAN_ReleaseRxMessage(CAN_TypeDef *CANx, u32 msgobj);
u32 CAN_IsMessageWaiting(CAN_TypeDef *CANx,  u32 msgobj);
u32 CAN_IsTransmitRequested(CAN_TypeDef *CANx, u32 msgobj);
u32 CAN_IsInterruptPending(CAN_TypeDef *CANx, u32 msgobj);
u32 CAN_IsObjectValid(CAN_TypeDef *CANx, u32 msgobj);


#endif /* __73x_CAN_H */

/******************* (C) COPYRIGHT 2005 STMicroelectronics *****END OF FILE****/