main.c

本程序是针对Infineon公司的XC167CI处理器而编写的CAN网络程序。CAN（控制局域网）协议是一种广泛的应用于汽车电子的网络协议。本程序建立了三个CAN节点

//****************************************************************************
// @Module        Project Settings
// @Filename      MAIN.C
// @Project       cannet.dav
//----------------------------------------------------------------------------
// @Controller    Infineon XC167CI-32F20
//
// @Compiler      Keil
//
// @Codegenerator 2.4
//
// @Description   This file contains the project initialization function.
//
//----------------------------------------------------------------------------
// @Date          2006-12-10 17:52:23
//
//****************************************************************************

// USER CODE BEGIN (MAIN_General,1)

// USER CODE END



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

#include "MAIN.H"

// USER CODE BEGIN (MAIN_General,2)

// USER CODE END


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

// USER CODE BEGIN (MAIN_General,3)

// USER CODE END


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

// USER CODE BEGIN (MAIN_General,4)

// USER CODE END


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

// USER CODE BEGIN (MAIN_General,5)

// USER CODE END


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

// USER CODE BEGIN (MAIN_General,6)

// USER CODE END


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

// USER CODE BEGIN (MAIN_General,7)

// USER CODE END


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

// USER CODE BEGIN (MAIN_General,8)

// USER CODE END


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

// USER CODE BEGIN (MAIN_General,9)

// USER CODE END


//****************************************************************************
// @Function      void MAIN_vInit(void) 
//
//----------------------------------------------------------------------------
// @Description   This function initializes the microcontroller.
//
//----------------------------------------------------------------------------
// @Returnvalue   None
//
//----------------------------------------------------------------------------
// @Parameters    None
//
//----------------------------------------------------------------------------
// @Date          2006-12-10
//
//****************************************************************************

// USER CODE BEGIN (Init,1)

// USER CODE END

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

  // USER CODE END

  ///  -----------------------------------------------------------------------
  ///  Configuration of the System Clock:
  ///  -----------------------------------------------------------------------
  ///  - VCO clock used, input clock is connected
  ///  - input frequency is 8 MHz
  ///  - VCO output frequency 100 .. 150 MHz
  ///  - system clock is 20 MHz

  MAIN_vUnlockProtecReg();       // unlock write security
  PLLCON         =  0x7814;      // load PLL control register


  //// -----------------------------------------------------------------------
  //// Begin of Important Settings for the Start-Up File
  //// -----------------------------------------------------------------------
  ///  All following settings must be set in the start-up file. You can use 
  ///  DAvE's project file (*.dpt) to include this register values into your 
  ///  compiler EDE.

    ///  ---------------------------------------------------------------------
    ///  Initialization of the CPUCON1 Register:
    ///  ---------------------------------------------------------------------
    ///  - space between two vectors is 2 words
    ///  - DISWDT executable until End of Init
    ///  - segmentation is enabled
    ///  - switch context is interruptible
    ///  - branch prediction is enabled
    ///  - zero cycle jump function is enabled

    //// this register must be set in the start-up file
    //// CPUCON1  =  0x0007

    ///  ---------------------------------------------------------------------
    ///  Initialization of the VECSEG Register:
    ///  ---------------------------------------------------------------------
    ///  - start from internal program memory

    //// this register must be set in the start-up file
    //// VECSEG  =  0x00C0

    ///  ---------------------------------------------------------------------
    ///  Initialization of the SYSCON0 Register:
    ///  ---------------------------------------------------------------------

    //// this register must be set in the start-up file
    //// SYSCON0  =  0x0000

    ///  ---------------------------------------------------------------------
    ///  Initialization of the SYSCON1 Register:
    ///  ---------------------------------------------------------------------
    ///  clock prescaler for system is fpll / 1

    //// this register must be set in the start-up file
    //// SYSCON1  =  0x0000

    ///  ---------------------------------------------------------------------
    ///  Initialization of the SYSCON3 Register:
    ///  ---------------------------------------------------------------------

    //// this register must be set in the start-up file
    //// SYSCON3  =  0x0000

    ///  ---------------------------------------------------------------------
    ///  Initialization of EBC
    ///  ---------------------------------------------------------------------

    //// this register must be set in the start-up file
    //// EBCMOD1  =  0x007F

    ///  EBC is disabled
  //// -----------------------------------------------------------------------
  //// End of Important Settings for the Start-Up File
  //// -----------------------------------------------------------------------


  //   -----------------------------------------------------------------------
  //   Initialization of the Peripherals:
  //   -----------------------------------------------------------------------

  //   initializes the TwinCAN Module (CAN)
  CAN_vInit();

  // USER CODE BEGIN (Init,3)

  // USER CODE END

  //   globally enable interrupts
  PSW_IEN        =  1;          

} //  End of function MAIN_vInit


//****************************************************************************
// @Function      void MAIN_vUnlockProtecReg(void) 
//
//----------------------------------------------------------------------------
// @Description   This function makes it possible to write one protected 
//                register. After calling of this function and write on the 
//                protected register is the security level set to low 
//                protected mode.
//
//----------------------------------------------------------------------------
// @Returnvalue   None
//
//----------------------------------------------------------------------------
// @Parameters    None
//
//----------------------------------------------------------------------------
// @Date          2006-12-10
//
//****************************************************************************

// USER CODE BEGIN (UnlockProtecReg,1)

// USER CODE END

void MAIN_vUnlockProtecReg(void)
{
  ubyte ubPASSWORD;

  if((SCUSLS & 0x1800) == 0x0800)      // if low protected mode
  {

    ubPASSWORD = SCUSLS & 0x00FF;
    ubPASSWORD = ~ubPASSWORD;
    SCUSLC = 0x8E00 | ubPASSWORD;      // command 4

  }  // end if low protected mode

  if((SCUSLS & 0x1800) == 0x1800)      // if write protected mode
  {
    SCUSLC = 0xAAAA;                   // command 0
    SCUSLC = 0x5554;                   // command 1

    ubPASSWORD = SCUSLS & 0x00FF;
    ubPASSWORD = ~ubPASSWORD;

    SCUSLC = 0x9600 | ubPASSWORD;      // command 2
    SCUSLC = 0x0800;                   // command 3; new PASSWOR is 0x00

    ubPASSWORD = SCUSLS & 0x00FF;
    ubPASSWORD = ~ubPASSWORD;
    SCUSLC = 0x8E00 | ubPASSWORD;      // command 4

  }  // end if write protected mode

} //  End of function MAIN_vUnlockProtecReg


//****************************************************************************
// @Function      void main(void) 
//
//----------------------------------------------------------------------------
// @Description   This is the main function.
//
//----------------------------------------------------------------------------
// @Returnvalue   None
//
//----------------------------------------------------------------------------
// @Parameters    None
//
//----------------------------------------------------------------------------
// @Date          2006-12-10
//
//****************************************************************************

// USER CODE BEGIN (Main,1)
int i,j;
void delayms(int k)
{
	int i,j;
	 for(i=0;i<100;i++)
	 for(j=0;j<1000*k;j++)
	 {
	 }
}
ubyte ch1[6]="hello";
ubyte ch2[6]="world";

// USER CODE END

void main(void)
{
  // USER CODE BEGIN (Main,2)

  // USER CODE END

  MAIN_vInit();

  // USER CODE BEGIN (Main,4)
  DP1L=0xff;
  P1L=0xff;

  while(1)
  {
  	if(CAN_ubRequestMsgObj(1))//检验所选择的报文是否可以访问，即检验TXRQ 
  	{
  		CAN_vLoadData(1,ch1);  //将要发送的数据放入报文消息的数据区中
	   /*	if(CAN_HWOBJ[0].ubData[0]=='h')	//这是验证已经加载的数据存在在报文数据区的哪个地方
		{
		   for(k=0;k<40000;k++)
		   P1L=0x00;					 
		}  */
		CAN_vTransmit(1);// set TXRQ, reset CPUUPD,然后发送数据 
	  /*	if(CAN_ubNewData(0)) //这是一个验证是否发出数据的函数
		{
		   	 if(CAN_HWOBJ[0].ubData[1]=='e')
		    {
		   for(k=0;k<40000;k++)
		   P1L=0x00;
	       	} 
		}  */
	}
	for(i=0;i<10000;i++)
	 for(j=0;j<500;j++);
	if(CAN_ubRequestMsgObj(2))//检验所选择的报文是否可以访问，即检验TXRQ 
  	{
  		CAN_vLoadData(2,ch2);  //将要发送的数据放入报文消息的数据区中
	   /*	if(CAN_HWOBJ[0].ubData[0]=='h')	//这是验证已经加载的数据存在在报文数据区的哪个地方
		{
		   for(k=0;k<40000;k++)
		   P1L=0x00;					 
		}  */
		CAN_vTransmit(2);// set TXRQ, reset CPUUPD,然后发送数据 
	  /*	if(CAN_ubNewData(0)) //这是一个验证是否发出数据的函数
		{
		   	 if(CAN_HWOBJ[0].ubData[1]=='e')
		    {
		   for(k=0;k<40000;k++)
		   P1L=0x00;
	       	} 
		}  */
   	}
	for(i=0;i<10000;i++)
    for(j=0;j<500;j++);
  }
  // USER CODE END

} //  End of function main



// USER CODE BEGIN (MAIN_General,10)

// USER CODE END