asc0.c

开发环境为keil166

//****************************************************************************
// @Module        Asynchronous/Synchronous Serial Interface 0 (ASC0)
// @Filename      ASC0.C
// @Project       can_configure.dav
//----------------------------------------------------------------------------
// @Controller    Infineon XC164CS-16F20
//
// @Compiler      Keil
//
// @Codegenerator 2.8
//
// @Description   This file contains functions that use the ASC0 module.
//
//----------------------------------------------------------------------------
// @Date          2009-4-4 17:03:46
//
//****************************************************************************

// USER CODE BEGIN (ASC0_General,1)

// USER CODE END



//****************************************************************************
// @Project Includes
//****************************************************************************

#include "MAIN.H"

// USER CODE BEGIN (ASC0_General,2)

// USER CODE END


//****************************************************************************
// @Macros
//****************************************************************************

// USER CODE BEGIN (ASC0_General,3)

// USER CODE END


//****************************************************************************
// @Defines
//****************************************************************************

// USER CODE BEGIN (ASC0_General,4)

// USER CODE END


//****************************************************************************
// @Typedefs
//****************************************************************************

// USER CODE BEGIN (ASC0_General,5)

// USER CODE END


//****************************************************************************
// @Imported Global Variables
//****************************************************************************

// USER CODE BEGIN (ASC0_General,6)

// USER CODE END


//****************************************************************************
// @Global Variables
//****************************************************************************

// USER CODE BEGIN (ASC0_General,7)

// USER CODE END


//****************************************************************************
// @External Prototypes
//****************************************************************************

// USER CODE BEGIN (ASC0_General,8)

// USER CODE END


//****************************************************************************
// @Prototypes Of Local Functions
//****************************************************************************

// USER CODE BEGIN (ASC0_General,9)

// USER CODE END


//****************************************************************************
// @Function      void ASC0_vInit(void) 
//
//----------------------------------------------------------------------------
// @Description   This is the initialization function of the ASC0 function 
//                library. It is assumed that the SFRs used by this library 
//                are in its reset state. 
//
//----------------------------------------------------------------------------
// @Returnvalue   None
//
//----------------------------------------------------------------------------
// @Parameters    None
//
//----------------------------------------------------------------------------
// @Date          2009-4-4
//
//****************************************************************************

// USER CODE BEGIN (Init,1)

// USER CODE END

void ASC0_vInit(void)
{
  // USER CODE BEGIN (Init,2)

  // USER CODE END

  ///  -----------------------------------------------------------------------
  ///  Configuration of the ASC0 Baudrate Generator:
  ///  -----------------------------------------------------------------------
  ///  - additionally reduce serial clock to 2
  ///  - required baud rate = 19.200 kbaud
  ///  - real baud rate     = 18.939 kbaud
  ///  - deviation          = -1.357 %

  ASC0_BG        =  0x0020;      // load ASC0 baud rate time reload register

  ///  -----------------------------------------------------------------------
  ///  Configuration of the ASC0 Operation Mode:
  ///  -----------------------------------------------------------------------
  ///  - 8-bit data asychronous operation with one stop bit
  ///  - receiver is enabled

  ASC0_CON       =  0x0011;      // load ASC0 control register

  ///  -----------------------------------------------------------------------
  ///  FIFO Configuration:
  ///  -----------------------------------------------------------------------
  ///  - receive FIFO is disabled
  ///  - transmit FIFO is disabled

  ASC0_RXFCON    =  0x0102;      // load ASC0 receive FIFO control register
  ASC0_TXFCON    =  0x0102;      // load ASC0 transmit FIFO control register

  ///  -----------------------------------------------------------------------
  ///  Configuration of the used ASC0 Port Pins:
  ///  -----------------------------------------------------------------------
  ///  - P3.10 is used for ASC0 Transmit Data Output (TxDA0)
  ///  - P3.11 is used for ASC0 Receive data Input (RxDA0)

  ALTSEL0P3     |=  0x0400;      // select alternate output function
  P3   = (P3   & ~(uword)0x0400) | 0x0400;    //set data register
  DP3  = (DP3  & ~(uword)0x0400) | 0x0400;    //set direction register

  ///  -----------------------------------------------------------------------
  ///  Configuration of the used ASC0 Interrupts:
  ///  -----------------------------------------------------------------------
  ///  Rx service request node configuration:
  ///  - Rx interrupt priority level (ILVL) = 12
  ///  - Rx interrupt group level (GLVL) = 1
  ///  - Rx group priority extension (GPX) = 0

  ASC0_RIC       =  0x0071;     


  //   -----------------------------------------------------------------------
  //   Default Settings for Service Request Flags:
  //   -----------------------------------------------------------------------
  ASC0_TIC_IR    =  1;           // indicates that the transmit register is 
                                 // empty

  // USER CODE BEGIN (ASC0_Function,3)

  // USER CODE END

  ASC0_CON      |=  0x8000;      // enable baud rate generator


} //  End of function ASC0_vInit


//****************************************************************************
// @Function      void ASC0_vSendData(uword uwData) 
//
//----------------------------------------------------------------------------
// @Description   This function writes a send data initialization word into 
//                the transmit buffer register.
//                
//                Note: 
//                In a multiprocessor system the master with this function 
//                has the possibility to send data to the selected slave. To 
//                achieve this, the 9th bit must set on zero.
//
//----------------------------------------------------------------------------
// @Returnvalue   None
//
//----------------------------------------------------------------------------
// @Parameters    uwData: 
//                Data to be send
//
//----------------------------------------------------------------------------
// @Date          2009-4-4
//
//****************************************************************************

// USER CODE BEGIN (SendData,1)

// USER CODE END

void ASC0_vSendData(uword uwData)
{
  ASC0_TBIC_IR = 0;        //  reset transmit buffer interrupt request 
  ASC0_TBUF    = uwData;   //  load transmit buffer register

} //  End of function ASC0_vSendData


//****************************************************************************
// @Function      uword ASC0_uwGetData(void) 
//
//----------------------------------------------------------------------------
// @Description   This function reads out the content of the receive buffer 
//                register which contains the received data.
//
//----------------------------------------------------------------------------
// @Returnvalue   data that has been received
//
//----------------------------------------------------------------------------
// @Parameters    None
//
//----------------------------------------------------------------------------
// @Date          2009-4-4
//
//****************************************************************************

// USER CODE BEGIN (GetData,1)

// USER CODE END

uword ASC0_uwGetData(void)
{
  return(ASC0_RBUF);     // return receive buffer register

} //  End of function ASC0_uwGetData


//****************************************************************************
// @Function      void ASC0_viRx(void) 
//
//----------------------------------------------------------------------------
// @Description   This is the receive interrupt service routine for the ASC0. 
//                It is called if the data has been received. 
//                Please note that you have to add application specific code 
//                to this function.
//
//----------------------------------------------------------------------------
// @Returnvalue   None
//
//----------------------------------------------------------------------------
// @Parameters    None
//
//----------------------------------------------------------------------------
// @Date          2009-4-4
//
//****************************************************************************

// USER CODE BEGIN (Rx,1)
unsigned char i=0;
// USER CODE END

void ASC0_viRx(void) interrupt ASC0_RINT
{

  // USER CODE BEGIN (Rx,2)
  
  unsigned char rec;
  rec = ASC0_uwGetData();			  //rec_data[1,2]-->radius;recdata[3,4]-->vehicle velocity
  if (rec == 0xaf)
      i=0;
  rec_data[i]=rec;
  i++;
  if ((rec == 0xbf)&&(i == 6))
     { i=0;
	   asc0_rec=1;
	  }

  // USER CODE END

} //  End of function ASC0_viRx


//****************************************************************************
// @Function      ubyte ASC0_ubTxDataReady(void) 
//
//----------------------------------------------------------------------------
// @Description   This function can be used for checking up the status of the 
//                ASC0 transmit interrupt flags. This shows when the sending 
//                of data has terminated. By continuously polling this flag 
//                after the function ASC0_vSendData has been called, it is 
//                possible to establish when the ASC0 has terminated its task.
//
//----------------------------------------------------------------------------
// @Returnvalue   0 if transmitter is busy, else 1
//
//----------------------------------------------------------------------------
// @Parameters    None
//
//----------------------------------------------------------------------------
// @Date          2009-4-4
//
//****************************************************************************

// USER CODE BEGIN (TxDataReady,1)

// USER CODE END

ubyte ASC0_ubTxDataReady(void)
{
  ubyte ubReturnValue;

  ubReturnValue = 0;

  if(ASC0_TIC_IR)               // if sending of data is terminated
  {
    ubReturnValue = 1;
    ASC0_TIC_IR   = 0;
  }
  return(ubReturnValue);         // return receive buffer register

} //  End of function ASC0_ubTxDataReady




// USER CODE BEGIN (ASC0_General,10)

// USER CODE END