idle.c

linux SD 程序

/*****************************************
	NAME: idle.c
	DESC: IDLE mode test
	HISTORY:
	03.23.2002:purnnamu: first release for 2410
 *****************************************/

#include "def.h"
#include "option.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h" 

#include "idle.h"

static void __irq Eint0Int(void)
{
	ClearPending(BIT_EINT0);
	Uart_Printf("EINT0 interrupt is occurred for IDLE wake-up.\n");
}

static void __irq AlarmInt(void)
{
	ClearPending(BIT_RTC);
	Uart_Printf("ALARM interrupt is occurred for IDLE wake-up.\n");
}

static volatile int t0cnt,t1cnt;

//Timer0 interrupt will be used to test the IDLE mode hard	
static void __irq Timer0Int(void)
{
	ClearPending(BIT_TIMER0);
	t0cnt++;
}

//Timer1 interrupt will be used to test the IDLE mode hard	
static void __irq Timer1Int(void)
{
	ClearPending(BIT_TIMER1);
	t1cnt++;
}

/**********************
 *	IDLE mode test	*
 **********************/

void Test_IdleMode(void)
{
	int i;
//	int extintMode;

	MMU_SetAsyncBusMode(); 
	//ARM920T should be in the async bus mode 
	//because FCLK is used for ARM920T in the async bus mode.

	Uart_Printf("[IDLE Mode Test]\n");
	Uart_Printf("Check the current cunsumption.\n");
	Uart_Printf("After 10 seconds, S3C2400X will wake up by RTC alarm interrupt.\n");
	Uart_Printf("S3C2410X will also wake up by EINT0.\n");

	//PWR_Lcd_Tft_16Bit_240320_On();
	//PWR_StartIIS();
	//PWR_StartTimer();
	
	Uart_TxEmpty(0);		//Wait until UART0 Tx buffer empty.
	
	rGPFCON=rGPFCON & ~(3<<0)|(2<<0);	//PF0=EINT0
	rEXTINT0=rEXTINT0&(7<<0)|(0x2<<0);	//EINT0=falling edge triggered
	
	pISR_EINT0=(U32)Eint0Int;
	pISR_RTC=(U32)AlarmInt;

	rSRCPND = BIT_EINT0|BIT_RTC; //to clear the previous pending states
	rINTPND = BIT_EINT0|BIT_RTC;
	
	rINTMSK=~(BIT_EINT0|BIT_RTC);

	SetAlarmWakeUp();
	rRTCCON = 0x0;			// R/W disable, but interrupt will be generated.

	rCLKCON|=(1<<2);		//enter IDLE mode.

	for(i=0;i<10;i++);	
	//wait until S3C2400X enters IDLE mode.	
	//wait EINT0 interrupt or RTC alarm interrupt

	rCLKCON&=~(1<<2);		
	//turn-off IDLE bit. IDLE bit should be turned off after wake-up.
	
	Uart_Printf("Return to Normal Mode.\n");

	rINTMSK=BIT_ALLMSK;
}

void Test_IdleModeHard(void)
{
	int i,j;

	MMU_SetAsyncBusMode(); //ARM920T should be in the async. bus mode.
	
	Uart_Printf("[IDLE Mode Hard Test with Timer0]\n");
	Uart_Printf("S3C2410X will also wake up by EINT0 falling edge.\n");

	Uart_TxEmpty(0);		//Wait until UART0 Tx buffer empty.

	rGPFCON=rGPFCON & ~(3<<0)|(2<<0);	//PF0=EINT0
	rEXTINT0=rEXTINT0&(7<<0)|(0x2<<0);	//EINT0=falling edge triggered
	
	rSRCPND = BIT_EINT0;
	rINTPND = BIT_EINT0;

	t0cnt=0;t1cnt=0;

	pISR_TIMER0=(U32)Timer0Int; 
	pISR_TIMER1=(U32)Timer1Int;
	pISR_EINT0=(U32)Eint0Int;

	rTCFG0=0x0;				//PRESC01=1,PRESC234=1
	rTCFG1=0x0;				//TIMER0,1,2,3,4,5= 1/2	
	rTCNTB0=65535;	
	rTCNTB1=2570;
	rTCON=0xa0a;			//T0,T1=manualUpdate,interval mode
	rTCON=0x909;			//Start T0,T1.
	//rTCON=0x00a;
	//rTCON=0x009;
	
	rINTMSK=~(BIT_EINT0|BIT_TIMER0|BIT_TIMER1);
		
	for(i=0;i<10000;i++)
	{
		rCLKCON|=(1<<2);	//enter IDLE mode.

		//wait until S3C2400X enters IDLE mode.	
		//wait EINT0 interrupt or RTC alarm interrupt
		for(j=0;j<10;j++);	

		rCLKCON&=~(1<<2);		
		//turn-off IDLE bit. IDLE bit should be turned off after wake-up.

		if(i%100==0)Uart_Printf("#");
	}

	rTCON=0x0; 				//turn the timer off

	rINTMSK=BIT_ALLMSK;
	
	Uart_Printf("\nt0cnt=%d,t1cnt=%d(t0cnt+t1cnt>=10000)\n",t0cnt,t1cnt);
	Uart_Printf("Return to Normal Mode.\n");
}

/*********************
 * MMU IDLE mode test *
 *********************/

void Test_MMUIdleMode(void)
{
	int i;
//	int extintMode;

	MMU_SetAsyncBusMode(); //ARM920T should be in the async. Bus mode.

	Uart_Printf("[MMU IDLE Mode Test]\n");
	Uart_Printf("This routine tests MMU registser7:Wait for interrupt function.\n");
	Uart_Printf("\nCheck the current cunsumption.\n");
	Uart_Printf("After 10 seconds, S3C2410X will wake up by RTC alarm interrupt.\n");
	Uart_Printf("S3C2400X will also wake up by EINT0.\n");
	Uart_TxEmpty(0);		//Wait until UART0 Tx buffer empty.

	rGPFCON=rGPFCON & ~(3<<0)|(2<<0);	//PF0=EINT0
	rEXTINT0=rEXTINT0&(7<<0)|(0x2<<0);	//EINT0=falling edge triggered
	
	pISR_EINT0=(U32)Eint0Int;
	pISR_RTC=(U32)AlarmInt;

	rSRCPND = BIT_EINT0|BIT_RTC;		//to clear the previous pending states
	rINTPND = BIT_EINT0|BIT_RTC;
	
	rINTMSK=~(BIT_EINT0|BIT_RTC);
	//rINTMSK=~(BIT_RTC);
	//rINTMSK=BIT_ALLMSK;

	SetAlarmWakeUp();
	rRTCCON = 0x0;	// R/W disable, but interrupt will be generated.

	MMU_WaitForInterrupt();
	
	//wait until S3C2400X enters IDLE mode.	
	//wait EINT0 interrupt or RTC alarm interrupt
	for(i=0;i<10;i++);	

	Uart_Printf("Return to Normal Mode.\n");

	rINTMSK=BIT_ALLMSK;
}