power.c

基于44B0的Bootload原代码,详细的设计了 44B0开发平台的BOOT

#include  <math.h>
#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\def.h"
#include "..\inc\power.h"
#include "..\inc\rtc.h"

#define FIN 4000000

static void __irq SLWEint45Int(void);
//void Display_4GrayMonoImage(void);
char slw_exit=0;
void Test_SlowMode(void)
{
    int i;
    unsigned int save_MCON[9];
    unsigned int save_PCONE;

//the value of memory control register in slow clock(1MHz)
#if (BDRAMTYPE==DRAM)
    unsigned int MemCon[9]={0,0,0,0,0,0,0x10002,0x10002,0x800000+2033};
#else //BDRAMTYPE==SDRAM
    unsigned int MemCon[9]={0,0,0,0,0,0,0x18000,0x18000,0x800000+2033};
#endif

    rEXTINT=0x22222222;	//falling edge
    pISR_EINT4567=(U32)SLWEint45Int;
    rINTMSK=~(BIT_GLOBAL|BIT_RTC|BIT_EINT4567);

    save_PCONE=rPCONE;
    rPCONE |= 0x3;//for monitoring FOUT
    Uart_Printf("rPCONE=0x%x\n",rPCONE);

    for(i=0;i<9;i++)
	save_MCON[i]=((unsigned int *)0x01c80004)[i];//  *(unsigned int *)(0x01c80004+4*i);
    	
    Uart_Printf("[POWER DOWN MODE TEST]\n");
    Uart_Printf("1)Entering SLOW mode.\n");
    Uart_Printf("  LEDs are flickered by 20ms period at %dMhz.\n",MCLK/1000000);
    Uart_Printf("  But, The frequency,in 1Mhz, is about %dms.\n",MCLK*20/1000000);
    Uart_Printf("  Press EINT 4/5 key to exit SLOW mode\n");
    Uart_TxEmpty(0);	//To avoid being crushed the character

    rLOCKTIME=0x190;//0x7d0;	//count=t_lock*Fin=2000 (t_lock=200us, Fin=10MHz)

    rCLKSLOW=5|(1<<4)|(1<<5); //PLL off,SLOW mode,SLVAL=5 Fout=Fin/(2*SLVAL)=1MHz

    ChangeMemCon(MemCon);//change memory control register(60MHz-->1MHz)

    while(!slw_exit)
    //now!  slow mode:1Mhz, PLL off
    {
    	Led_Set( 0x00 )	;		//
    	Delay(500) ;		//
    	Led_Set( 0x0f )	;		//
    	Delay(500) ;		//
    }

    rINTMSK=BIT_GLOBAL;
    for(i=0;i<9;i++)
	MemCon[i]=save_MCON[i];

    ChangeMemCon(MemCon);//change memory control register(1MHz-->66MHz)

//test
//    rCLKSLOW=2;	//PLL on & Slow off
//    Uart_Printf("BYE!!\n");
//test


    rCLKSLOW=2|(1<<4)|(0<<5);	//PLL on

    for(i=0;i<2048;i++);	//wait during PLL lock-time

    rCLKSLOW=2; 		//exit SLOW mode(disable slow_bit)

    rPCONE=save_PCONE;
    slw_exit=0;
}

void __irq SLWEint45Int(void)
{
    rEXTINTPND=0xf;		//clear EXTINTPND reg.		
    rI_ISPC=BIT_EINT4567;	//clear pending_bit
    slw_exit=1;
}



void Test_PLL(void)
{
    int i,P_div, M_div, S_val, S_div, mck;

    Uart_Printf("[Running change test of M/P/S value]\n");

    Uart_Printf("Input M vlaue\n");
    M_div=Uart_GetIntNum();        
    Uart_Printf("Input P vlaue\n");
    P_div=Uart_GetIntNum();    
    Uart_Printf("Input S vlaue\n");
    S_div=Uart_GetIntNum();
    S_val=pow(2,S_div);
    mck=(  (M_div+8)*FIN  )/(  (P_div+2)*S_val  );

    Uart_Printf("MCLK=%d,M=0x%x,P=0x%x,S=0x%x\n",mck,M_div,P_div,S_div);
    Uart_Printf("Now change PLL value\n");
    Uart_TxEmpty(0);
    
    ChangePllValue(M_div,P_div,S_div);
    Uart_Init(mck,115200);
    Uart_Printf("...I'm running in changed MCLK...\nPress any key to return!\n");

    while(!Uart_GetKey())
    {
    	Led_Set( 0x00 )	;		//
    	Delay(500) ;		//
    	Led_Set( 0x0f )	;		//
    	Delay(500) ;		//
    }

//    ChangePllValue(0x48,0x3,0x2);//Fin=10MHz, Fout=40MHz
    ChangePllValue(0x34,0x0,0x1);//Fin=10MHz, Fout=40MHz
    Uart_Init(0,115200);
    Uart_Printf("Returned original clock\n");
}


void Test_HoldMode(void)
{
    Uart_Printf("[HOLD Mode(Normal mode with some stopped blocks)]\n");
    Uart_Printf("IIS,IIC,ADC,RTC,UART1,SIO,ZDMA,Timer,LCD are stopped step by step.\n");
    Uart_Printf("Check the current cunsumption. Type any key to exit.\n");	
    //Except GPIO,BDMA,UART0
    Uart_Printf("IIS off.\n");
    rCLKCON=0x3ff8;
    Uart_Getch();
    Uart_Printf("IIC off.\n");
    rCLKCON=0x1ff8;
    Uart_Getch();
    Uart_Printf("ADC off.\n");
    rADCCON|=0x20;
    rCLKCON=0x0ff8;
    Uart_Getch();
    Uart_Printf("RTC_control off.\n");
    rCLKCON=0x07f8;
    Uart_Getch();
    Uart_Printf("UART1 off.\n");
    rCLKCON=0x05f8;
    Uart_Getch();
    Uart_Printf("SIO off.\n");
    rCLKCON=0x05d8;
    Uart_Getch();
    Uart_Printf("ZDMA01 off.\n");
    rCLKCON=0x05c8;
    Uart_Getch();
    Uart_Printf("TIMER012345 off.\n");
    rCLKCON=0x05c0;
    Uart_Getch();
    Uart_Printf("LCD off.\n");
    rCLKCON=0x0580;
    Uart_Getch();

    Uart_Printf("Return to Normal Mode.\n");	    
    rCLKCON=0x7ff8; //IIS,IIC,ADC,RTC,UART,BRDMA,SIO,ZDMA,Timer,LCD	       
}