sleep.c

一个基于三星S3C2413的全部驱动程序

		printf("Power On Reset\n\n");
		rGSTATUS2=(1<<0);
		SLEEP_COUNT=0;
		return;
	}

	if(rGSTATUS2&(1<<1))
	{
		printf("Sleep Wake-DN\n\n");
		rGSTATUS2=(1<<1);
		printf("EINTPEND=0x%x\n",rEINTPEND);
		printf("SRCPND=0x%x\n",rSRCPND);
		// Added for wake-DN 100Hz.
		SLEEP_COUNT = SLEEP_COUNT+1;
		printf("SLEEP_COUNT=%d\n", SLEEP_COUNT);

		if(SLEEP_COUNT>1000000) 
		{
			printf("\n\nSleep count is %d... any key to continue\n\n", SLEEP_COUNT);
			getc();
		}

		Test_SleepMode();// goto sleep mode again.
	}

	if(rGSTATUS2&(1<<2))
	{
		printf("Watchdog Reset\n\n");
		rGSTATUS2=(1<<2);
		return;
	}
}


//=========================================================================
void Test_SleepMode(void)
{
	int i, mode, error=0;
	U32 portStatus[33+3];

	printf("[Sleep Mode Test]: EINT0/EINT11/Alarm\n");

	rGPGDN |= (1<<3);
	rGPFCON=rGPFCON & ~(3<<0)|(2<<0);	//GPF0=EINT0
	rEXTINT0=rEXTINT0&~(7<<0)|(0x2<<0);  //EINT0=falling edge triggered

	rGPGDN |= (1<<3);
	rGPGCON=rGPGCON & ~(3<<6)|(2<<6);	//GPG3=EINT11
	rEXTINT1=rEXTINT1&~(7<<12)|(2<<12);  //EINT11=falling edge triggered
	rGPGSLPCON = 0xffffffff;
	
	printf("\nNow, I am entering Sleep mode.\n");
	Uart_TxEmpty(1);	//Wait until UART0 Tx buffer empty.
	
	pISR_EINT0	= (U32)Eint0Int;
	pISR_EINT8_23 = (U32)Eint8_23Int;
	pISR_RTC	  = (U32)AlarmInt;
		

	rEINTPEND |= ((1<<3)|(1<<0)); // clear EINT11 pending bit in rEINTPEND
	rSRCPND = BIT_EINT0 | BIT_RTC | BIT_EINT8_23;
	rINTPND = BIT_EINT0 | BIT_RTC | BIT_EINT8_23;

	rEINTMASK &= ~((1<<11)|(1<<0));
	rINTMSK &=~(BIT_EINT0|BIT_RTC|BIT_EINT8_23);

	// alarm wakeup
	//SetAlarmWakeUp2();
    
    
    ConfigSleepGPIO();
	
	rADCCON|=(1<<2);

	/* Pin Configuration in Sleep Mode */
	rMISCCR|=(1<<12); //USB port0 = suspend
	rMISCCR|=(1<<13); //USB port1 = suspend
	

	Lcd_EnvidOnOff(0); 			//LCD must be off before entering Sleep mode.	

	// Entering the SLEEP mode
	//*************************//
#if 1		
	rPWRCFG 	|= ((0xffff<<16)|(3<<6)); // EINT_WAKE_MASK
	MMU_WaitForInterrupt();
#else	
	rPWRMODECON |= (0x2BED<<0); // Go To BED
	//*************************//
#endif
}



int batt_flag=0;
//=========================================================================
static void __irq BattFaultInt(void)
{
	rINTMSK |= (BIT_BAT_FLT);	// mask.
	ClearPending(BIT_BAT_FLT)

	printf("BATT_FLT interrDNt occured\n");
	batt_flag=1;
	//Batt_Sleep();

}

//================================================================================
void Test_BattFaultInterrDNt(void)
{
	int i;
	
	printf("Battery fault interrDNt test.\n");
	printf("Detect low-level.\n");

	printf("0 : Reset system during nBATT_FLT=0.\n");
	printf("4 : System will be wake-DN from sleep mode during nBATT_FLT=0.\n");
	printf("6 : System will ignore Eint0 signal during nBATT_FLT=0.\n");
	printf("7 : Disable Battery function.\n");
	printf("Select battery function : ");
	i = GetIntNum() & 0x7;
	
	rMISCCR = (rMISCCR & ~(0x1f<<20)) | (i<<20);
	// [22:20]
	// if 0, System will be Reset during nBATT_FLT=0.
	// if 4, System will be wake-DN from sleep mode during nBATT_FLT=0.
	// if 6, System will ignore nBATT_FLT signal.
	// if 7, Disable Battery function.

	pISR_BAT_FLT = (U32)BattFaultInt;
	rSRCPND = BIT_BAT_FLT;
	rINTPND = BIT_BAT_FLT;

	rINTMSK = rINTMSK & ~(BIT_BAT_FLT);	// unmask.

		while(batt_flag==0)
		{
			if(Uart_GetKey()){
				break; 
			}
		}	
		batt_flag=0;
		//Batt_Sleep();
		printf("exit.\n");
		
}

void Batt_Sleep(void)
{
	int i;
	U32 portStatus[33+3];
	int error=0;
	int mode;
	printf("[Sleep Mode Test]\n");

	printf("nBATT_FLT pin should be tested.\n");
	
	printf("S3C2442 will wake DN by EINT0 .\n");

/////////////////////////////////////////// add for battery fault...
#if 1
	printf("6 : System will ignore Eint0 signal during nBATT_FLT=0.\n");

	printf("rMISCCR:%x\n", rMISCCR);

#endif	
/////////////////////////////////////////// add for battery fault...end

	//Uart_TxEmpty(1);	//Wait until UART0 Tx buffer empty.
	   

#if 0	  
	SelectEintType();
#else
	rGPFCON=rGPFCON & ~(3<<0)|(2<<0); //PF0=EINT0
	rEXTINT0=rEXTINT0&~(7<<0)|(2<<0);  //EINT0=falling edge triggered
#endif

#if 1	//test whether or not the interrDNt pending bit retain the wake-DN source.
	pISR_EINT0=(U32)Eint0Int;
	pISR_EINT8_23=(U32)Eint8_23Int;
	pISR_RTC=(U32)AlarmInt;
	rINTMSK = ~(BIT_EINT0|BIT_EINT8_23|BIT_RTC);
	for(i=0;i<100;i++);

	rSRCPND = BIT_EINT0|BIT_EINT8_23|BIT_RTC;
	rINTPND = BIT_EINT0|BIT_EINT8_23|BIT_RTC;

	rEINTPEND=rEINTPEND;
	rSRCPND=rSRCPND;
	rINTPND=rINTPND;
#endif	 

	rEINTMASK = rEINTMASK&~(1<<11); //SRCPND:EINT8_23 will be set by EINT11 after wake-DN.
	rINTMSK = BIT_ALLMSK;
	// NOTE: Any interrDNt can't be used in Sleep mode. 
	//	   because SDRAM is in self-refresh mode and ISR code will access SDRAM.

	printf("Alarm wake-DN (y/n)? ");
	if(getc()=='y')
	{
		printf("S3C2442 will wake DN by RTC alarm(10 sec) or EINT0 .\n");
		SetAlarmWakeDN();
	}

	rRTCCON=0x0;   // R/W disable, 1/32768, Normal(merge), No reset
	rADCCON|=(1<<2);

	rMISCCR|=(1<<12); //USB port0 = suspend
	rMISCCR|=(1<<13); //USB port1 = suspend

	//rMISCCR|=(1<<2); //Previous state at STOP(?) mode (???)
	rMISCCR &= ~(1<<2); //Previous state at STOP(?) mode (???)

//	rGSTATUS3=(U32)StartPointAfterSleepWakeDN;	// memory control part in startDN code.
	printf("set restart address:%x\n", rGSTATUS3);
	rGSTATUS4=0xaaaaaaaa;

	//Uart_TxEmpty(1);	//Wait until UART0 Tx buffer empty.
	ConfigSleepGPIO();
	ConfigMiscIO();

	rMISCCR=rMISCCR|(3<<0); 

	Lcd_EnvidOnOff(0); //Before entering Sleep mode, LCD must be off	

	rMISCCR = (rMISCCR & ~(0x7<<20)) | (6<<20);	// set 6.

	//=================================================================
	//  VERY IMPORTANT NOTE 
	//  To enter SLEEP/SLIDLE mode, MMU TLB-fill operation should be prohibited
	//   because MTT table is in SDRAM and SDRAM is in the self-refresh mode.
	//  So, we will fill TLB before entering SDRAM self-refresh 
	//   instead of disabling MMU.
	rREFRESH;//To fill TLB for the special register used in EnterPWDN
	rCLKCON;
	//=================================================================


	//EnterPWDN(0xffff8); //Sleep mode
}


/************************ Sleep Mode by 100hz test ************************/
//================================================================================
void Check_SleepWakeDN_100Hz(void)
{
}

//================================================================================

void Test_SleepMode_100Hz(void)
{
}




void Test_StopMode(void)
{
	int i;
	U32 portStatus[33+3];	// +3 is for 2412 GPJ port.
	int error=0;
	int mode;
	printf("[STOP Mode Test]\n");

	printf("S3C2413 will wake DN by EINT0 .\n");

	Uart_TxEmpty(1);	//Wait until UART0 Tx buffer empty.

	// Save the port configurations
	for(i=0;i<36;i++) {
		portStatus[i]=*( (volatile U32 *)0x56000000 + i);	// 0x5600_0000:GPACON addr.
	}

//	ConfigSleepGPIO();
//	ConfigMiscIO();
   
	printf("S3C2413 will wake DN by EINT0 (Falling Edge Triggered).\n");
	rGPGDN |= (1<<3);
	rGPFCON=rGPFCON & ~(3<<0)|(2<<0);	//GPF0=EINT0
	rEXTINT0=rEXTINT0&~(7<<0)|(0x2<<0);  //EINT0=falling edge triggered

	printf("S3C2413 will wake DN by EINT11 (Falling Edge Triggered).\n"); 
	rGPGDN |= (1<<3);
	rGPGCON=rGPGCON & ~(3<<6)|(2<<6);	//GPG3=EINT11
	rEXTINT1=rEXTINT1&~(7<<12)|(4<<12);  //EINT11=falling edge triggered

	printf("\nNow, I am entering Stop mode.\n");
	Uart_TxEmpty(1);	//Wait until UART0 Tx buffer empty.
	
	pISR_EINT0	= (U32)Eint0Int;
	pISR_EINT8_23 = (U32)Eint8_23Int;
	pISR_RTC	  = (U32)AlarmInt;
	pISR_TICK     = (U32)Tick_WakeDN;
		

	rEINTPEND |= ((1<<3)|(1<<0)); // clear EINT11 pending bit in rEINTPEND
	rSRCPND = BIT_EINT0 | BIT_RTC | BIT_EINT8_23|BIT_TICK;
	rINTPND = BIT_EINT0 | BIT_RTC | BIT_EINT8_23|BIT_TICK;

	rEINTMASK &= ~((1<<11)|(1<<0));
	rINTMSK &=~(BIT_EINT0|BIT_RTC|BIT_EINT8_23|BIT_TICK);


	rADCCON|=(1<<2);	// ADC stanby.

	rMISCCR|=(1<<12); //USB port0 = suspend
	rMISCCR|=(1<<13); //USB port1 = suspend

	Lcd_EnvidOnOff(0); //Before entering Sleep mode, LCD must be off	
	Delay(1);

	Led_Display(0x5);

	printf("locktime = %08x\n",rLOCKTIME);
	printf("OSCSET = %08x\n",rOSCSET);
	Uart_TxEmpty(1);
	
	//SetAlarmWakeUp2();
    //rRTCCON = 0x0;	// R/W disable, but interrupt will be generated.
	//rTICNT0    = (1<<7);   //Tick time interrupt enable, Tick time count value 127
	Tick_Count_Set_power(127);   // 1> value
	
	// Entering the STOP mode
	//*************************//

#if 1

	rPWRCFG 	|= (2<<6);	
	MMU_WaitForInterrupt();


#else	
	rPWRMODECON |= (1<<16); 
	//*************************//
	__asm
	{
		nop;
		nop;
		nop;
		nop;
		nop;
		nop;
		nop;
		nop;
		nop;
		nop;
		nop;
		nop;

	}
	// Wake-Up from STOP mode
	rPWRMODECON &= ~(1<<16); 
#endif	

	//Restore the port configurations
	for(i=0;i<36;i++){
		*( (volatile U32 *)0x56000000 + i)=portStatus[i];
	}

	Led_Display(0xa);
	Lcd_EnvidOnOff(1); 
	

	rINTMSK |=(BIT_EINT0|BIT_RTC|BIT_EINT8_23|BIT_TICK);
	rINTMSK =BIT_ALLMSK;
	printf("Return to Normal Mode.\n");	
}


void Test_SoftMode(void)
{

	printf("Software reset Test \n",rRSTSTAT);
		//Check wake-up reset
	if( rRSTSTAT & (1<<0) )		// nRESET?
	{
		printf("\n__ Wake-up by nRESET\n");
		rRSTSTAT |= (1<<0);
	}
	else if( rRSTSTAT & (1<<2) )	// WDTRST?
	{
		printf("\n__ Wake-up by WDTRST\n");
		rRSTSTAT |= (1<<2);
	}
	else if( rRSTSTAT & (1<<3) )	// SLEEP?
	{
		printf("\n__ Wake-up by SLEEP\n");
		rRSTSTAT |= (1<<3);
	}
	else if( rRSTSTAT & (1<<4) )	// ESLEEP?
	{
		printf("\n__ Wake-up by ESLEEP\n");
		rRSTSTAT |= (1<<4);
	}
	else if( rRSTSTAT & (1<<5) )	// SWRST?
	{
		printf("\n__ Wake-up by SWRST\n");
		rRSTSTAT |= (1<<5);
	}

	rSWRSTCON = 0x533c2412;
}