bdlc.h

J1850源码,该程序给出了美国制定的J1850汽车网络的编程模块,以容错处理.

 #define _11us_delay        0x02
  /** 12us delay value in external transciever */
 #define _12us_delay        0x03
 /** 13us delay value in external transciever */
 #define _13us_delay        0x04
  /** 14us delay value in external transciever */
 #define _14us_delay        0x05
 /** 15us delay value in external transciever */
 #define _15us_delay        0x06
  /** Typical 16us delay value in external transciever */
 #define _16us_delay        0x07
 /** 17us delay value in external transciever */
 #define _17us_delay        0x08
  /** 18us delay value in external transciever */
 #define _18us_delay        0x09
 /** 19us delay value in external transciever */
 #define _19us_delay        0x0A 
 /** 20us delay value in external transciever */
 #define _20us_delay        0x0B
 /** 21us delay value in external transciever */
 #define _21us_delay        0x0C 
 /** 22us delay value in external transciever */
 #define _22us_delay        0x0D
 /** 23us delay value in external transciever */
 #define _23us_delay        0x0E
 /** 24us delay value in external transciever */
 #define _24us_delay        0x0F

/******************************************************************************/
/**
 * \brief   This State check for any activity in the J1850 Bus
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void vfnBDLC_Idle(void);
/******************************************************************************/
/**
 * \brief   Check if a J1850 packet is in the RX buffer and Process any \n
 *          received packet to take the proper actions
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void vfnBDLC_ReceiveFrame(void); 
/******************************************************************************/
/**
 * \brief   Send J1850 frames
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void vfnBDLC_SendFrame(void);
/******************************************************************************/
/**
 * \brief   Check for errors during TX and RX
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void vfnBDLC_ErrChecking(void);
/******************************************************************************/
/**
 * \brief   This function runs the BDLC state machine
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void vfnBDLC_Driver(void);
/******************************************************************************/
/**
 * \brief   Initializes the BDLC module 
 * \author  R01160
 * \param   Test
 * \return  void
 */  
/******************************************************************************/
 void vfnBDLCInit(UINT8 Test); 
 /******************************************************************************/
/**
 * \brief   Clear all RX buffers. Normal and Backup buffers are cleared
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void vfnClearAllRxBuffers(void);
/******************************************************************************/
/**
 * \brief   Clear Retransmit buffer. 
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void vfnClearRetransmitBuff(void);
/******************************************************************************/
/**
 * \brief   Check priority commands in the buffer and return the MOST\n
 *          priority cmd in the retransmit Buffer.
 * \author  R01160
 * \param   void
 * \return  MOST priority Command.
 */  
/******************************************************************************/
 UINT8 u8fCheckBufferPriority(void);
/******************************************************************************/
/**
 * \brief   Transmits J1850 messages. This functions handles all the process\n
 *          in order to transmit the whole packet.Function will send one byte\n
 *          at a time.Enables J1850 transciever and Disable Single-Wire transciever \n
 *          Saves the InProgress Command in order to check if the command has been\n
 *          correctly sent.   
 * \author  R01160
 * \param   void
 * \return  Status
 */  
/******************************************************************************/
UINT8 u8fnBDLCTransmit(void);

/******************************************************************************/
/**
 * \brief   This routine handles all posible errors during any transmition\n
 *          or package reception.           
 * \author  R01160
 * \param   Error Source
 * \return  void
 */  
/******************************************************************************/
void vfnBDLCErrorHandling(UINT8 ErrorSource); 

/******************************************************************************/
/**
 * \brief   This routine makes a Loopback test in order to determine the \n
 *          integrity of the link to the SAE J1850 network          
 * \author  R01160
 * \param   LoopMode Test
 * \return  void
 */  
/******************************************************************************/
void vfnBDLC_LoopBackTest(UINT8 LoopMode); 
/******************************************************************************/
/**
 * \brief  If an unwanted message is received this function will be called\n
 *         in order to discard the rest of the frame 
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void Cmd_Invalid   (void);
 /******************************************************************************/
/**
 * \brief   Calculate the BDLC rate selection using the FBUS value \n
 *          DLCBRSR is calculated automatically when BDLCInit function\n
 *          becomes called. 
 * \author  R01160
 * \param   BusClock frequency
 * \return  BDLC Rate Selection value
 * \warning Developer must be aware to calculate the correct FBUS value\n
 *          since this function calculate the BDLC rate selection value\n
 *          according with the FBUS value. If FBUS value is set with an \n
 *          incorrect value, also the rate selection value will be wrong. 
 */  
/******************************************************************************/
 UINT8 CalculateRateSelection(UINT32 BusClock);
 /******************************************************************************/
/**
 * \brief  Set Error Variables when a J1850 has been detected.
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void vfnErrDo_s(void);
  /******************************************************************************/
/**
 * \brief  Swaps Rx Buffer from 0x0700 to 0x0712 and viceversa. 
 * \author  R01160
 * \param   void
 * \return  void
 */  
/******************************************************************************/
 void vfnSwapRxBuffer(void);


 
#endif