sys_init.c

该模板使用于周立功公司研发的EasyARM2100系列开发板

	VICVectAddr = 0;															// 向量中断结束
}
//=================================================================================================



/**************************************************************************************************
  Function:       // void __irq IRQ_Eint2 (void)
  Description:    // for  int2 interrupt
  Calls:          // none
  Called By:      // init ()
  Table Accessed: // none
  Table Updated:  // none
  Input:          // void
  Output:         // none
  Return:         // void
  Others:         // none
***************************************************************************************************/
void __irq IRQ_Eint2 (void)
{
	while ((EXTINT & 0x04) != 0)
	{
		EXTINT         |= 0x04;													// 清除EINT2中断标志
	}
	VICVectAddr = 0;															// 向量中断结束
}
//=================================================================================================



/**************************************************************************************************
  Function:       // void init_io(void)
  Description:    // for init the io
  Calls:          // none
  Called By:      // init ()
  Table Accessed: // none
  Table Updated:  // none
  Input:          // void
  Output:         // none
  Return:         // void
  Others:         // none
***************************************************************************************************/
void init_io(void)
{
	//PINSEL0 = 0x80000000;														//1000_0000_0000_0000_0000_0000_0000_0000
	//PINSEL1 = 0x01000001;                                       				//0000_0001_0000_0100_0000_0000_0000_0001
	
	//IO0DIR 	= 0xedfe7fff;														//1110_1101_1111_1110_0111_1111_1111_1111 
	//IO1DIR 	= 0xffffffff;														//1111_1111_1111_1111_1111_1111_1111_1111
    
	PINSEL0 = UART0_EN|I2C_EN|UART1_EN;		//enable uart0 uart1 i2c										
	PINSEL1 = 0;                                       				
	//PINSEL2=0; 
	IO0DIR 	= LCD_RW|//0xffffffff;
	          LCD_E|
	          LCD_D0|
	          LCD_D2|
	          LCD_D3|
	          LCD_D5|
	          LCD_D7|
	          LCD_CS2|
	          LCD_CS1|
	          D1302_RST|
	          LCD_POWER|
	          M485_EN|
	          M4821_CS11|
	          M4821_SDI2|
	          M4821_CS12|
	          M4821_SDI1|
	          D1302_CLK;
	          
	IO1DIR 	=//0xffffffff;//
	          D1302_IO|
	          M4821_SCK1|
	          M4821_SCK2|
	          LED|
	          BEEP|
	          LCD_D6|
	          LCD_D4|
	          LCD_D1|
	          LCD_RS|
	          RY4;//|
	         // RY3|
	         // RY2|
	         // RY1;    
             IO1SET |=LED;
	         IO1SET |=BEEP;
			 IO0CLR |=M485_EN;//485始终置低,只在发送是置高.	
			 IO0SET |=LCD_POWER;	
			 IO1SET |=BEEP;			
}
//=================================================================================================



/**************************************************************************************************
  Function:       // void init_clock(void)
  Description:    // for  init clock
  Calls:          // none
  Called By:      // init ()
  Table Accessed: // none
  Table Updated:  // none
  Input:          // void
  Output:         // none
  Return:         // void
  Others:         // none
***************************************************************************************************/
void init_clock (void)
{

}
//=================================================================================================



/**************************************************************************************************
  Function:       // void void init_timer0 (void)
  Description:    // for  init timer0
  Calls:          // none
  Called By:      // init ()
  Table Accessed: // none
  Table Updated:  // none
  Input:          // void
  Output:         // none
  Return:         // void
  Others:         // none
***************************************************************************************************/
void init_timer0 (void)
{
	T0TC   = 0;																	//定时器0初值设置为0									
	T0PR   = 0;																	//时钟不分频										
	
	T0MCR  = 0x03;																//设置T0MR0匹配后复位T0TC，并产生中断标志
	T0MR0  = Fpclk /4;															//1/350秒钟定时,(1MS定时：T0MR0  = Fpclk / 1000)
	
	
	T0TCR  = 0x03;																//启动定时器0和分频器0
	T0TCR  = 0x01;																//启动定时器0和分频器0
//-----------------------------------------------
	VICIntSelect &=~(1<<4);														//设置timer0中断通道设置为IRQ中断		
	VICVectCntl2  = 0x20 | 4;													//分配定时器0到向量中断2
	VICVectAddr2  = (uint32)IRQ_Timer0;											//设置中断服务程序地址					
	VICIntEnable |=(1<<4);														//使能定时器0中断						
}
//=================================================================================================



/**************************************************************************************************
  Function:       // void init_timer1 (void)
  Description:    // for  init timer1
  Calls:          // none
  Called By:      // init ()
  Table Accessed: // none
  Table Updated:  // none
  Input:          // void
  Output:         // none
  Return:         // void
  Others:         // none
***************************************************************************************************/
void init_timer1 (void)
{
	T1TC   = 0;																	//定时器1初值设置为0									
	T1PR   = 0;																	//时钟不分频										
	
	T1MCR  = 0x03;																//设置T1MR0匹配后复位T1TC，并产生中断标志
	T1MR0  = Fpclk /4;															//1/350秒钟定时,(1MS定时：T1MR0  = Fpclk / 1000)
	
	T1TCR  = 0x03;																//启动定时器1和分频器1
	T1TCR  = 0x01;																//启动定时器1和分频器1										
//-----------------------------------------------	
	VICIntSelect &=~(1<<5);														//设置timer1中断通道设置为IRQ中断			
	VICVectCntl3  =0x20 | 5;													//分配定时器1到向量中断3
	VICVectAddr3  =(uint32)IRQ_Timer1;											//设置中断服务程序地址					
	VICIntEnable |=(1<<5);														//使能定时器1中断						
}
//=================================================================================================



/**************************************************************************************************
  Function:       // void init_int0 (void)
  Description:    // for  init int0
  Calls:          // none
  Called By:      // init ()
  Table Accessed: // none
  Table Updated:  // none
  Input:          // void
  Output:         // none
  Return:         // void
  Others:         // none
***************************************************************************************************/
void init_int0 (void)
{
	EXTMODE        |=0x01;														//int0 pulse trigle
	EXTPOLAR	   |=0x01;														//rise endge active 
	EXTINT         |=0x01;														//清除EINT0中断标志

	VICIntSelect   &=~(1<<14);													//设置int0中断通道设置为IRQ中断	
	VICVectCntl0    =0x20 | 14;													//分配外部中断0到向量中断0
	VICVectAddr0    =(uint32)IRQ_Eint0;											//设置中断服务程序地址
	VICIntEnable   |=(1<<14);													//使能EINT0中断					
}
//=================================================================================================



/**************************************************************************************************
  Function:       // void init_int2 (void)
  Description:    // for  init int2
  Calls:          // none
  Called By:      // init ()
  Table Accessed: // none
  Table Updated:  // none
  Input:          // void
  Output:         // none
  Return:         // void
  Others:         // none
***************************************************************************************************/
void init_int2 (void)
{
	EXTMODE        |=0x04;														//int2 pulse trigle
	EXTPOLAR	   |=0x04;														//rise endge active
	EXTINT         |=0x04;														//清除EINT2中断标志	

	VICIntSelect   &=~(1<<16);													//设置int2中断通道设置为IRQ中断	
	VICVectCntl1    =0x20 | 16;													//分配外部中断2到向量中断1
	VICVectAddr1    =(uint32)IRQ_Eint2;											//设置中断服务程序地址
	VICIntEnable   |=(1<<16);													//使能EINT2中断				
}
//=================================================================================================