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/*---------------------------------------------------------------------------- 
 *      R T L  -  C A N   D r i v e r 
 *---------------------------------------------------------------------------- 
 *      Name:    RTX_CAN.h 
 *      Purpose: Header for CAN Generic Layer Driver 
 *      Rev.:    V3.12 
 *---------------------------------------------------------------------------- 
 *      This code is part of the RealView Run-Time Library. 
 *      Copyright (c) 2004-2007 KEIL - An ARM Company. All rights reserved. 
 *---------------------------------------------------------------------------*/ 
 
#include                       /* RTX kernel functions & defines      */ 
#include "CAN_Cfg.h"                  /* CAN Configuration                   */ 
 
 
#ifndef _RTX_CAN_H 
#define _RTX_CAN_H 
 
/* Definition of memory pool type, for CAN messages                          */ 
#define CAN_msgpool_declare(name,cnt)     U32 name[cnt*(sizeof(CAN_msg)/4) + 3] 
 
/* Definition of mailbox array, for used controllers                         */ 
#define mbx_arr_declare(name,arr_num,cnt) U32 name[arr_num][4 + cnt] 
 
/* CAN message object structure                                              */ 
typedef struct  { 
  U32 id;                 /* 29 bit identifier                               */ 
  U8  data[8];            /* Data field                                      */ 
  U8  len;                /* Length of data field in bytes                   */ 
  U8  ch;                 /* Object channel                                  */ 
  U8  format;             /* 0 - STANDARD, 1- EXTENDED IDENTIFIER            */ 
  U8  type;               /* 0 - DATA FRAME, 1 - REMOTE FRAME                */ 
}  CAN_msg; 
 
/* Externaly declared memory pool for CAN messages, both transmit and receive*/ 
extern U32 CAN_mpool[CAN_CTRL_MAX_NUM*(CAN_No_SendObjects+CAN_No_ReceiveObjects)*(sizeof(CAN_msg)/4) + 3]; 
 
/* Externaly declared mailbox, for CAN transmit messages                     */ 
extern U32 MBX_tx_ctrl[CAN_CTRL_MAX_NUM][4 + CAN_No_SendObjects]; 
 
/* Externaly declared mailbox, for CAN receive messages                      */ 
extern U32 MBX_rx_ctrl[CAN_CTRL_MAX_NUM][4 + CAN_No_ReceiveObjects]; 
 
/* Semaphores used for protecting writing to CAN hardware                    */ 
extern OS_SEM wr_sem[CAN_CTRL_MAX_NUM]; 
 
/* Symbolic names for formats of CAN message                                 */ 
typedef enum {STANDARD_FORMAT = 0, EXTENDED_FORMAT} CAN_FORMAT; 
 
/* Symbolic names for type of CAN message                                    */ 
typedef enum {DATA_FRAME = 0, REMOTE_FRAME}         CAN_FRAME; 
 
/* Functions defined in module CAN.c                                         */ 
CAN_ERROR CAN_init      (U32 ctrl, U32 baudrate); 
CAN_ERROR CAN_start     (U32 ctrl); 
CAN_ERROR CAN_send      (U32 ctrl, CAN_msg *msg, U16 timeout); 
CAN_ERROR CAN_request   (U32 ctrl, CAN_msg *msg, U16 timeout); 
CAN_ERROR CAN_set       (U32 ctrl, CAN_msg *msg, U16 timeout); 
CAN_ERROR CAN_receive   (U32 ctrl, CAN_msg *msg, U16 timeout); 
CAN_ERROR CAN_rx_object (U32 ctrl, U32 ch, U32 id, CAN_FORMAT filter_type); 
CAN_ERROR CAN_tx_object (U32 ctrl, U32 ch, CAN_FORMAT filter_type); 
 
#endif /* _RTX_CAN_H */ 
 
 
/*---------------------------------------------------------------------------- 
 * end of file 
 *---------------------------------------------------------------------------*/