idle.c

优龙科技公司自带的一个源码

#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\def.h"
#include "..\inc\idle.h"
#include "..\inc\rtc.h"

void SLIdleMode(void); //160x240


int debug;

int t0cnt,t1cnt;


void __irq Eint45Int(void)
{
    rEXTINTPND=0xf;		//clear EXTINTPND reg.
    rI_ISPC=BIT_EINT4567;
    Uart_Printf("EINT45 ISR is occurred for wake-up from IDLE mode.\n");
}


void __irq Timer0Int(void)
{
    int i;
    //for(i=0;i<10000;i++);
    rI_ISPC=BIT_TIMER0;
    for(i=0;i<100;i++); //why???
    t0cnt++;
}


void __irq Timer1Int(void)
{
    rI_ISPC=BIT_TIMER1;
    t1cnt++;
}


void __irq AlarmInt(void)
{
    rI_ISPC=BIT_RTC;
    Uart_Printf("ALARM ISR is occurred for wake-up from IDLE mode.\n");
}

void __irq SlEint45Int(void)
{
    rEXTINTPND=0xf;		//clear EXTINTPND reg.
    rI_ISPC=BIT_EINT4567;
    debug=1;   
    //????
    //why does not this interrupt occur in SL-IDLE mode? 
    //????
}

void __irq SlAlarmInt(void)
{
    //If you have to use the internal peripherals, 
    //you must configure CLKCON,CLKSLOW,PLL   

    rI_ISPC=BIT_RTC;
    debug=2;
}




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

void Test_IdleMode(void)
{
    int i;
    int extintMode;
    Uart_Printf("[IDLE Mode Test]\n");
    Uart_Printf("Check the current cunsumption. Push the buttons to exit IDLE mode.\n");
    Uart_Printf("After 10 seconds, S3C44B0X will wake up by RTC alarm interrupt.\n");
    Uart_Printf("S3C44B0X will also wake up by EINT4/5.\n");
    Uart_Printf("1.L-LEVEL  2.H-LEVEL  3.F-EDGE  4.R-EDGE  5.B-EDGE\n");
    Uart_Printf("Select the external interrupt type. Press the number!!!\n");
    extintMode=Uart_Getch();

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

    rPCONG=0xf00;	//PG2=EINT2

    switch(extintMode)
    {
    case '1':
    	rEXTINT=0x0;	//low
    	break;
    case '2':
    	rEXTINT=0x11111111;	//high
    	break;
    case '3':
    	rEXTINT=0x22222222;	//falling
    	break;
    case '4':
     	rEXTINT=0x44444444;	//rising
     	break;
    case '5':
    	rEXTINT=0x66666666;	//both edge
    	break;
    default:
    	break;
    }

    Rtc_Init();
 
    rRTCCON = 0x01;    // R/W enable, 1/32768, Normal(merge), No reset

    rALMYEAR=TESTYEAR2 ;
    rALMMON =TESTMONTH2;
    rALMDAY =TESTDAY2  ;
    rALMHOUR=TESTHOUR2 ;
    rALMMIN =TESTMIN2  ;
    rALMSEC =TESTSEC2+9;

    rRTCALM=0x7f;

    rI_ISPC=BIT_EINT4567|BIT_RTC;	//to clear the previous pending status.
    Uart_Printf("rINTPND=%x\n",rINTPND);
    
    pISR_EINT4567=(U32)Eint45Int;
    pISR_RTC=(U32)AlarmInt;
    rINTMSK=~(BIT_GLOBAL|BIT_EINT4567|BIT_RTC);
    for(i=0;i<2;i++);	//wait until the pended interrupt is executed.
    
    rCLKCON=0x7ff8|0x4;  //enter IDLE mode.
    //Uart_Getch();    
    for(i=0;i<10;i++);   //wait until S3C44B0X enters IDLE mode.	

    // wait EINT[7:0] interrupt or alarm wake-up

    rCLKCON=0x7ff8;      
    //turn-off IDLE bit on rCLKCON to synchronize rCLKCON with the real mode.

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

    rINTMSK=BIT_GLOBAL;
}




void Test_IdleModeHard(void)
{   
    int i,j;
    
    Uart_Printf("[IDLE Mode Test with Timer0,1 10000times]\n");
    Uart_Printf("S3C44B0X will also wake up by EINT4/5.\n");
    Uart_TxEmpty(0);    //Wait until UART0 Tx buffer empty.


    rPCONG=0xf00;	//PG2=EINT2
    rEXTINT=rEXTINT&~(7<<8)|(2<<8);	//falling

    pISR_TIMER0=(U32)Timer0Int; 
    pISR_TIMER1=(U32)Timer1Int;
    pISR_EINT4567=(U32)Eint45Int;
    
    rTCFG0=0x00010110;	//PRESC01,23,45= 1
    rTCFG1=0x00000000; 	//TIMER0,1,2,3,4,5= 1/2    
    rTCNTB0=65535;	
    rTCNTB1=2570;
    //rTCON=0xa0a;	//T1=MU,ITV,T0=MU,ITV
    //rTCON=0x909;	//Start T0,T1.
    rTCON=0x00a;
    rTCON=0x009;

    rINTMSK=~(BIT_GLOBAL|BIT_EINT4567|BIT_TIMER0|BIT_TIMER1);
    //rINTMSK=~(BIT_GLOBAL|BIT_EINT2);

    //The two timer will test the IDLE mode hard.
     
    for(i=0;i<10000;i++)
    {
    	rCLKCON=0x7ff8|0x4;  //enter IDLE mode.

    	for(j=0;j<10;j++);   //wait until KS32C41100 enters IDLE mode.
    	//wake up from normal mode
    	
    	rCLKCON=0x7ff8;      
    	//turn-off IDLE bit on rCLKCON to synchronize rCLKCON with the real mode.
    	Uart_Printf(".");
    }
    
    rTCON=0x0; //timer off
    rINTMSK=BIT_GLOBAL;
}




/*********************
 * SL_IDLE mode test *
 *********************/

#define MVAL_USED	(0)
#define MVAL 		(13)
#define L248 		(8)
#define CLKVAL_SL	(38)	// 60Mhz, fr=100Hz (CLKVAL=38.6)


#define M5D(n) ((n) & 0x1fffff)

unsigned int (*_frameBuffer4)[10];

void LcdInit_4Gray160x240(void);
void Display_4Gray160x240(void);



void Test_SLIdleMode20(void)
{
    int i;
    LcdInit_4Gray160x240();
    Display_4Gray160x240();
    Delay(1000); //wait more than 1 frame time.     
    for(i=0;i<20;i++)SLIdleMode();
}



void Test_SLIdleMode(void)
{
    LcdInit_4Gray160x240();
    Display_4Gray160x240();
    Delay(1000); //wait more than 1 frame time.     
    SLIdleMode();
}



void SLIdleMode(void) //160x240
{
    int i;
    int saveDramcon;
    debug=0;
    Uart_Printf("[SL_IDLE MODE TEST for 160x240]\n");
    Uart_Printf("After 10 seconds, S3C44B0X will wake up by RTC alarm interrupt.\n");
    Uart_Printf("S3C44B0X can wake up by EINT4/5.\n");
    Uart_TxEmpty(0);

    rPCONG=0xf00;	//PG2=EINT2
    rEXTINT=0x22222222;	//falling

    //pISR_EINT2=(U32)SlEint2Int;
    //pISR_RTC=(U32)SlAlarmInt;
    //rINTMSK=~(BIT_GLOBAL|BIT_EINT2|BIT_RTC);

    //If you want to use interrupt generation,the ISR should be on ROM/SRAM
    //(DRAM can't be allowed because of DRAM self-refresh)
    
    Rtc_Init();
    rRTCCON = 0x01;    // R/W enable, 1/32768, Normal(merge), No reset


    rALMYEAR=TESTYEAR2 ;
    rALMMON =TESTMONTH2;
    rALMDAY =TESTDAY2  ;
    rALMHOUR=TESTHOUR2 ;
    rALMMIN =TESTMIN2  ;
    rALMSEC =TESTSEC2+9; 
    //rALMSEC =TESTSEC2+1; 

    rRTCALM=0x7f;   //To test alarm wake-up.
    
    rADCCON|=0x20;  //ADC power down mode

    //
    // The I/O ports have to be configured properly to reduce STOP mode current.
    //
    
    
    //           LINECNT  4n+m th line
    //  1st line 239      4n+1th       
    //  2nd line 238      4n+2th 
    //  3rd line 237      4n+3th 
    //  4th line 236      4n  th 
    //   ....
    //236th line 4        4n  th   
    //237th line 3        4n+1th   
    //238th line 2        4n+2th   
    //239th line 1        4n+3th   
    //240th line 0        4n  th   


    while((rLCDCON1>>22)!=9);   
    while((rLCDCON1>>22)!=8);   
    // To enter self-refresh mode, the VCLK has to be 'L' after 4n-th line is displayed completely,
    // So,the self-refresh command has to be issued at 4n th line.
    // VCLK will be 'L' from 4n+1th line.

    //for(i=0;i<10;i++); 
    rLCDCON3=0x1;  //Enter self-refresh mode.
        
    while((rLCDCON1>>22)!=0); 

    //Because the SLOW mode is used, the LCDCON1,2 should be changed.
    rLCDCON1=(0)|(1<<5)|(MVAL_USED<<7)|(0x0<<8)|(0x0<<10)|(1/*CLKVAL*/<<12);
	// disable,4B_SNGL_SCAN,WDLY=2clk,WLH=2clk
    rLCDCON2=(239+L248)|(15/*39*/<<10)|(1<<21);  //LINEBLANK=1
    rCLKSLOW=2|(1<<4)|(1<<5); //SLOWVAL=2,Fout=Fin/(2x2),PLL off. 
    //DRAM refresh may not be done because of slow MCLK. but,the abnormal period is very short.
    rLCDCON1=(1)|(1<<5)|(MVAL_USED<<7)|(0x0<<8)|(0x0<<10)|(1<<12);


    saveDramcon=rREFRESH; 
    rREFRESH=(2017)|(0<<22)|(1<<23); 
    //15,6us@2Mhz, tchr,trc,trp=min, refresh enable. 
    // DRAM refresh may not be done every 15.6uS 
    // because of slow MCLK(1Mhz) and long memory access cycle. 
           
    EnterPWDN(0x46);  //enters SL_IDLE mode. rCLKCON=0x46   
                      //DRAM/SDRAM self-refresh is executed in EnterPWDN()
    //NOTE:
    //Any special registers setting will not accepted because CPU is not normal mode.
    
    rCLKCON=0x7ff8;  

    rCLKSLOW=2|(1<<4)|(0<<5); //SLOWVAL=2,Fout=Fin/(2x2),PLL on.   
    for(i=0;i<2048;i++);      //Wait PLL lock time.
    
    while((rLCDCON1>>22)!=1); 
    while((rLCDCON1>>22)!=0);     

    //Because the SLOW mode is exited, the LCDCON1,2 should be changed.
    rLCDCON1=(0)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_SL<<12);
	    // disable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,
    rLCDCON2=(239+L248)|(39<<10)|(10<<21); //HOZVAL=39,LINEBLANK=1
    rCLKSLOW=2;      //SLOWVAL=2,Fout=Fpllo,PLL on.   

    rLCDCON3=0x0; //LCD self refresh mode off.

    rLCDCON1=(1)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_SL<<12);

    rREFRESH=saveDramcon;    

    while((rLCDCON1>>22)!=1); 
    while((rLCDCON1>>22)!=0); //Display 1 more frame before exiting SL_IDLE mode. 
                              //why? no reason. it may be better.  

    //while((rLCDCON1>>22)!=9);   
    //while((rLCDCON1>>22)!=8);  //to catch the exit time for SL_IDLE mode.
    //rLCDCON3=0x0; //LCD self refresh mode off.

    //for(i=0;i<10;i++); 

    rADCCON&=~(0x20);
    
    rEXTINTPND=0xf;	//Clear EXTINTPND register

    Uart_Printf("debug=%d\n",debug);
    Uart_Printf("I have exited LCD SELFREF mode.\n");
}



void LcdInit_4Gray160x240(void)
{
	if((U32)_frameBuffer4==0)
	{
	    _frameBuffer4=(unsigned int (*)[10])malloc(10*4*240); 
	}

	rLCDCON1=(0)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_SL<<12);
	    // disable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,CLKVAL=?
	rLCDCON2=(239+L248)|(39<<10)|(10<<21);
	    //LINEBLANK=10 (without any calculation) 
	rLCDSADDR1= (0x1<<27) | ( ((U32)_frameBuffer4>>22)<<21 ) | M5D((U32)_frameBuffer4>>1);
	    // 4-gray, LCDBANK, LCDBASEU
	rLCDSADDR2= M5D((((U32)_frameBuffer4+((160/4)*(240+L248)))>>1)) | (MVAL<<21);
	rLCDSADDR3= (160/8) | ( 0<<9 );   
	    //No virtual screen. 

	//The following value has to be changed for better display.
	//Select 4 levels among 16 gray levels.

	rBLUELUT=0xfa40; 
	rDITHMODE=0x0;
	rDP1_2 =0xa5a5;      
	rDP4_7 =0xba5da65;
	rDP3_5 =0xa5a5f;
	rDP2_3 =0xd6b;
	rDP5_7 =0xeb7b5ed;
	rDP3_4 =0x7dbe;
	rDP4_5 =0x7ebdf;
	rDP6_7 =0x7fdfbfe;

	rLCDCON1=(1)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_SL<<12);
	    // enable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,CLKVAL=?
}




void Display_4Gray160x240(void)
{
    int i,j;

    for(j=0;j<100;j++)
        for(i=2;i<10;i++)
        {
            _frameBuffer4[j][i]=0x55aa55aa;
        }

    for(j=0;j<100;j++)
    {
        _frameBuffer4[j][9]=0x5555ffff;
    }


    for(j=100;j<240;j++)
        for(i=2;i<10;i++)
            _frameBuffer4[j][i]=0x0;
            
   
    for(i=2;i<10;i++)
        _frameBuffer4[100][i]=0xffffffff;
    for(i=2;i<10;i++)
        _frameBuffer4[0][i]=0xffffffff;
}