target.c

uCOS2.76移植到s3c44b0x上

#include "target.h"
#include "ucos_ii.h"               /* uC/OS interface */

extern OS_EVENT *Key_Mbox;
extern OS_EVENT *OK_Mbox;

/********************************************************************************************************
 * 外部中断4、5、6、7的中断处理 																		*
 ********************************************************************************************************/
volatile char which_int=0;
void EInt0Isr(void)
{
	Uart_Printf("EINT0");
	rI_ISPC |= BIT_EINT0;
}
void EInt4567Isr(void)
{
/*    which_int = rEXTINTPND;
    rEXTINTPND = 0xf;		//clear EXTINTPND reg.		
    rI_ISPC |= BIT_EINT4567;	//clear pending_bit

	Delay(500);		//延时若干个100us，消除抖动
	rPCONG &= 0x00ff;
	if( (rPDATG&0xf0) != 0xf0)
	{
	    switch(which_int)
	    {
			case 1:
			{
				OSMboxPost(Key_Mbox, (void *)4);
			}
			    break;
			case 2:
			{
				OSMboxPost(Key_Mbox, (void *)5);
			}
			    break;
			case 4:
			{
				OSMboxPost(OK_Mbox, (void *)6);
			}
			    break;
			case 8:
			{
				OSMboxPost(Key_Mbox, (void *)7);
			}
			    break;
			default :
				break;
	    }
	}

	//while((rPDATG&0xf0) != 0xf0);		//按键没有松开就一直等待
    rPCONG |= 0xff00;		//GPG4、5、6、7设为中断引脚
*/
}

/********************************************************************************************************
 * ARMTargetInit																						*
 *																										*
 * Description: This function initialize an ARM Target board											*
 *																										*
 * Argument   : none    																				*
 ********************************************************************************************************/
void ARMTargetInit(void) 
{
	//配置Cache
   	rSYSCFG = SYSCFG_8KB ;				//使用8K字节的指令缓存
	rNCACHBE0=((unsigned int)(Non_Cache_End>>12)<<16)|(Non_Cache_Start>>12);
	
//	Port_Init();					//初始化端口
	
//	Delay( 200 ) ;		//delay some time
//	Led_Set( 0x0f );		//LED全亮
//	Delay( 500 ) ;		//delay some time
//	Led_Set( 0x00 );		//LED全亮
	
//	ChangePllValue( 58, 3, 1 ) ;			//设置CPU频率为66M

	Uart_Init( 0, 115200 );			//设置串口0的速率为115200bps
	Uart_Select(0);					//选择串口0

	ARMInitInterrupts();			//初始化中断,设置中断服务程序
	
	Delay(0);						//调整延时
}


/********************************************************************************************************
 * ARMTargetStart																						*
 *																										*
 * Description: This function start the ARM target running												*
 *																										*
 * Argument   : none																					*
 ********************************************************************************************************/
void ARMTargetStart(void) {
	
	ARMInitTimers();				//配置时钟0相关寄存器
	ARMInstallSystemTimer();		//时钟0中断使能
}

/********************************************************************************************************
 * 中断初始化                   																		*
 ********************************************************************************************************/
void ARMInitInterrupts(void)
{
	// Non-vectored,IRQ disable,FIQ disable    
	rINTCON = 0x5 ;	  

	// All=IRQ mode
	rINTMOD = 0x0 ;	  

	// All interrupt is masked.
//	rINTMSK = BIT_GLOBAL;	  

	//set interrupt vector routine
//	pISR_RESET					//reserved
	pISR_UNDEF = (unsigned) DebugUNDEF;
	pISR_SWI = (unsigned) DebugSWI;
	pISR_PABORT = (unsigned) DebugPABORT;
	pISR_DABORT = (unsigned) DebugDABORT;
//	pISR_RESERVED = (unsigned) BreakPoint;		//not used
//	pISR_IRQ = (unsigned) 0;			//reserved
	pISR_FIQ = (unsigned) DebugFIQ;
	
	pISR_ADC= (unsigned) BreakPoint;
	pISR_RTC= (unsigned) BreakPoint;
	pISR_UTXD1= (unsigned) BreakPoint;
	pISR_UTXD0= (unsigned) BreakPoint;
	pISR_SIO= (unsigned) BreakPoint;
	pISR_IIC= (unsigned) BreakPoint;
	pISR_URXD1= (unsigned) BreakPoint;
	pISR_URXD0= (unsigned) BreakPoint;
	pISR_TIMER5= (unsigned) BreakPoint;
	pISR_TIMER4= (unsigned) BreakPoint;
	pISR_TIMER3= (unsigned) BreakPoint;
	pISR_TIMER2= (unsigned) BreakPoint;
	pISR_TIMER1= (unsigned) BreakPoint;
	pISR_TIMER0= (unsigned) BreakPoint;
	pISR_UERR01= (unsigned) BreakPoint;
	pISR_WDT= (unsigned) BreakPoint;
	pISR_BDMA1= (unsigned) BreakPoint;
	pISR_BDMA0= (unsigned) BreakPoint;
	pISR_ZDMA1= (unsigned) BreakPoint;
	pISR_ZDMA0= (unsigned) BreakPoint;
	pISR_TICK= (unsigned) BreakPoint;
	pISR_EINT4567= (unsigned) OSEINT4567ISR;
	pISR_EINT3= (unsigned) BreakPoint;
	pISR_EINT2= (unsigned) BreakPoint;
	pISR_EINT1= (unsigned) BreakPoint;
	pISR_EINT0= (unsigned) OSEINT0ISR;
//pISR_EINT0= (unsigned)EInt0Isr;
	pISR_TIMER0= (unsigned) OSTickISR;
	
}

//*******************************************************************************************************
int ARMRequestSystemTimer(void *tick, const unsigned char *str) 
{
	return 1;
}

/********************************************************************************************************
 * Initialize timer that is used OS																		*
 ********************************************************************************************************/
void ARMInitTimers(void)
{
	rTCFG0=0x20;  // prescaler=0,means "1" devider the same as timer0
	rTCFG1=0x44; //timer0,1 is 1/32, else are 1/2, devider the same as timer0
	rTCNTB0=0x493E;  //10ms
	rTCNTB1=0x493E0;  //10ms
	//update T0
    rTCON= 0x00000202;
}

/********************************************************************************************************
 * start system timer0																					*
 ********************************************************************************************************/
void ARMStartTimer(void)
{
	rTCON = 0x00000009;		//autoreload and start
}

/********************************************************************************************************
 * enable the interrupt																					*
 ********************************************************************************************************/
void ARMInstallSystemTimer(void)
{
	//Non-vectored,IRQ enable,FIQ disable 
    rINTCON=0x5;


   rINTMOD=0x0;	  // All=IRQ mode
   	rPCONG=0x57ff;  //PortG[0~4] EINT MODE,PortG[5~7] OU
//    pISR_EINT0=(int)Eint0Isr;//设置外部0的中断向量
    rEXTINTPND=0xf;		//clear EXTINTPND reg.
    rI_ISPC= BIT_EINT0;	//clear pending_bit


	//Non maksed TIMER0
	rINTMSK=~( BIT_TIMER0 | BIT_GLOBAL | BIT_EINT0);	//Default value=0x7ffffff
}
//*******************************************************************************************************
void BreakPoint(void)
{
	Uart_Printf("Enter BreakPoint");

	while(1)
	{
		Led_Set( 0xf ) ;		Delay( 1000 ) ;
		Led_Set( 0x0 ) ;		Delay( 1000 ) ;
	}
}

//*******************************************************************************************************
void DebugUNDEF(void)
{
	Uart_Printf("Enter DebugUNDEF");

	while(1)
	{
		Led_Set( 0xf ) ;		Delay( 1000 ) ;
		Led_Set( 0x0 ) ;		Delay( 1000 ) ;
	}
}

//*******************************************************************************************************
void DebugSWI(void)
{
	Uart_Printf("Enter DebugSWI");

	while(1)
	{
		Led_Set( 0xf ) ;		Delay( 1000 ) ;
		Led_Set( 0x0 ) ;		Delay( 1000 ) ;
	}
}

//*******************************************************************************************************
void DebugPABORT(void)
{
	Uart_Printf("Enter DebugPABORT");

	while(1)
	{
		Led_Set( 0xf ) ;		Delay( 1000 ) ;
		Led_Set( 0x0 ) ;		Delay( 1000 ) ;
	}
}

//*******************************************************************************************************
void DebugDABORT(void)
{
	Uart_Printf("Enter DebugDABORT");

	while(1)
	{
		Led_Set( 0xf ) ;		Delay( 1000 ) ;
		Led_Set( 0x0 ) ;		Delay( 1000 ) ;
	}
}

//*******************************************************************************************************
void DebugFIQ(void)
{
	Uart_Printf("Enter DebugFIQ");

	while(1)
	{
		Led_Set( 0xf ) ;		Delay( 1000 ) ;
		Led_Set( 0x0 ) ;		Delay( 1000 ) ;
	}
}
//*******************************************************************************************************