target.c

ucos2 内核的详尽代码

#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 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 = 0x07 ;	  

	// All=IRQ mode
	rINTMOD = 0x0 ;	  

	// All interrupt is masked.
	rINTMSK = BIT_GLOBAL;
	
	//rINTMSK=0x7ffffff;
    //rI_ISPC=0x3ffffff; 
    //rINTPND=0x0;
	//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_adc;
	pISR_RTC= (unsigned) BreakPoint_rtc;
	pISR_UTXD1= (unsigned) BreakPoint_utxd1;
	pISR_UTXD0= (unsigned) BreakPoint_utxd0;
	pISR_SIO= (unsigned) BreakPoint_sio;
	pISR_IIC= (unsigned) BreakPoint_iic;
	pISR_URXD1= (unsigned) BreakPoint_urxd1;
	pISR_URXD0= (unsigned) BreakPoint_urxd0;
	pISR_TIMER5= (unsigned) BreakPoint_timer5;
	pISR_TIMER4= (unsigned) BreakPoint_timer4;
	pISR_TIMER3= (unsigned) BreakPoint_timer3;
	pISR_TIMER2= (unsigned) BreakPoint_timer2;
	pISR_TIMER1= (unsigned) BreakPoint_timer1;
	pISR_TIMER0=(unsigned) BreakPoint_timer0;
	pISR_UERR01= (unsigned) BreakPoint_uerr01;
	pISR_WDT= (unsigned) Wdt_Int;
	pISR_BDMA1= (unsigned) BreakPoint_bdma1;
	pISR_BDMA0= (unsigned) BreakPoint_bdma0;
	pISR_ZDMA1= (unsigned) BreakPoint_zdma1;
	pISR_ZDMA0= (unsigned) BreakPoint_zdma0;
	pISR_TICK= (unsigned) BreakPoint_tick;
	pISR_EINT4567= (unsigned) OSEINT4567ISR;
	pISR_EINT3= (unsigned) BreakPoint_eint3;
	pISR_EINT2= (unsigned) BreakPoint_eint2;
	pISR_EINT1= (unsigned) BreakPoint_eint1;
	pISR_EINT0= (unsigned) BreakPoint_eint0;

	pISR_TIMER0= (unsigned) OSTickISR;
	
}

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

/********************************************************************************************************
 * Initialize timer that is used OS																		*
 ********************************************************************************************************/
void ARMInitTimers(void)
{
	//dead zone=0, pre0= 150
	rTCFG0= 0x00000095;
	//all interrupt, mux0= 1/16
	rTCFG1= 0x00000003;

	//set T0 count
	rTCNTB0= _CLOCK;

	//update T0
	rTCON= 0x00000002;
}

/********************************************************************************************************
 * start system timer0																					*
 ********************************************************************************************************/
void ARMStartTimer(void)
{
	rTCON = 0x9;		//autoreload and start
}

/********************************************************************************************************
 * enable the interrupt																					*
 ********************************************************************************************************/
void ARMInstallSystemTimer(void)
{
	//Non-vectored,IRQ enable,FIQ disable 
	rINTCON=0x5;
    
	//Non maksed TIMER0
	//rINTMSK=~( BIT_TIMER0 | BIT_GLOBAL | BIT_EINT4567);	//Default value=0x7ffffff
	rINTMSK=~( BIT_TIMER0 | BIT_GLOBAL );	//Default value=0x7ffffff
	rI_ISPC=0x3ffffff;
}

//*******************************************************************************************************
void BreakPoint_adc(void)
{
	//Uart_Printf("adc");
    rI_ISPC|=BIT_ADC;
}
void BreakPoint_rtc(void)
{
	//Uart_Printf("rtc");
    rI_ISPC|=BIT_RTC;
}
void BreakPoint_utxd1(void)
{
	//Uart_Printf("utxd1");

	rI_ISPC|=BIT_UTXD1;
}
void BreakPoint_utxd0(void)
{
	//Uart_Printf("utxd0");

	rI_ISPC|=BIT_UTXD0;
	
}
void BreakPoint_sio(void)
{
	//Uart_Printf("sio");
    rI_ISPC|=BIT_SIO;
}
void BreakPoint_iic(void)
{
	//Uart_Printf("iic");
   
			
        rI_ISPC|=BIT_IIC;
}
void BreakPoint_urxd1(void)
{
	//Uart_Printf("urxd1");
    rI_ISPC|=BIT_URXD1;
}
void BreakPoint_urxd0(void)
{
	//Uart_Printf("urxd0");
    rI_ISPC|=BIT_URXD0;
}
void BreakPoint_timer5(void)
{
	//Uart_Printf("timer5");
    rI_ISPC|=BIT_TIMER5;
}
void BreakPoint_timer4(void)
{
	//Uart_Printf("timer4");
    rI_ISPC|=BIT_TIMER4;
}
void BreakPoint_timer3(void)
{
	//Uart_Printf("timer3");
    rI_ISPC|=BIT_TIMER3;
}
void BreakPoint_timer2(void)
{
	//Uart_Printf("timer2");
    rI_ISPC|=BIT_TIMER2;
}
void BreakPoint_timer1(void)
{
	//Uart_Printf("timer1");
    rI_ISPC|=BIT_TIMER1;
}

void BreakPoint_timer0(void)
{
    rI_ISPC|=BIT_TIMER0;
}
void BreakPoint_uerr01(void)
{
	//Uart_Printf("uerr01");
    rI_ISPC|=BIT_UERR01;
}
void BreakPoint_bdma1(void)
{
	//Uart_Printf("bdma1");
    rI_ISPC|=BIT_BDMA1;
}
void BreakPoint_bdma0(void)
{
	//Uart_Printf("bdma0");
    rI_ISPC|=BIT_BDMA0;
}
void BreakPoint_zdma1(void)
{
	//Uart_Printf("zdma1");
	rI_ISPC|=BIT_ZDMA1;
}
void BreakPoint_zdma0(void)
{
	//Uart_Printf("zdma0");
    rI_ISPC|=BIT_ZDMA0;
	
}
void BreakPoint_tick(void)
{
	//Uart_Printf("rtctick");
    rI_ISPC|=BIT_TICK;
	
}
void BreakPoint_eint3(void)
{
	//Uart_Printf("eint3");
    rI_ISPC|=BIT_EINT3;
	
}
void BreakPoint_eint2(void)
{
	//Uart_Printf("eint2");
    rI_ISPC|=BIT_EINT2;
	
}
void BreakPoint_eint1(void)
{
	//Uart_Printf("eint1");
    rI_ISPC|=BIT_EINT1;
	
}
void BreakPoint_eint0(void)
{
	//Uart_Printf("eint0");
    rI_ISPC|=BIT_EINT0;
	
}
void Wdt_Int(void)
{
    rI_ISPC|=BIT_WDT;
    //Uart_Printf("wdt");
}


//*******************************************************************************************************
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 ) ;
	}
}
//*******************************************************************************************************