#include "..\inc\44b0x.h"
#include "..\inc\uTypes.h"
#include "..\inc\sysUtils.h"
#include "..\inc\console.h"

#define	EXT_OSC_CLK	10000000

U32 g_dwMCLK = 20000000;    //初始值20MHz

/*
函數(shù)名稱: sysUtilsUSecDelay
功    能: 延遲指定的us數(shù)
參    數(shù): dwUs - 延遲的us數(shù)
返回值  : 無
*/
void sysUtilsUSecDelay (U32 dwUs)
{
  U32 dwCnt;
  dwCnt = dwUs * (g_dwMCLK / 4000000);
  while(dwCnt--) 
  {
  //  if (dwCnt == 1)
  //      printf ("hello World");
  }
}

/*
函數(shù)名稱: sysUtilsDelay
功    能: 延遲指定CPU cycle
參    數(shù): dwTime - 延遲的CPU周期數(shù)
返回值  : 無
*/
void sysUtilsDelay (U32 dwTime)
{
    while (dwTime --);
}

/****************************************************************************
功能		:設(shè)置系統(tǒng)的鎖相環(huán)
參數(shù)		:nMDiv ----
			       :nPDiv  ----
			       :nSDiv  ----
返回值 :空
****************************************************************************/
STATUS sysUtilsSetPllValue (int nMDiv, int nPDiv, int nSDiv)
{
	int i = 1;		
	
	rPLLCON = (nMDiv<<12)|(nPDiv<<4)|nSDiv;
	
	while(nSDiv--)
		i *= 2;	
	
	g_dwMCLK = (EXT_OSC_CLK*(nMDiv+8))/((nPDiv+2)*i);		

	return STATUS_OK;
}


STATUS sysUtilsSetMainClk (U32 nMCLK)
{
	if (0 == nMCLK)
	{
		return STATUS_ERR;
	}

	
	g_dwMCLK = nMCLK;
	
	return STATUS_OK;
}

void InitSysTimer(U8 Freq)
{		
	rTCON   &= 0xf0ffffff;			//clear manual update bit, stop Timer 5 	
	rTCFG0  &= 0xff00ffff;			//定時器4/5的預(yù)分頻為16
	rTCFG0  |= (16-1)<<16;
	rTCFG1  &= 0xff0fffff;			//定時器5的MUX為1/8
	rTCFG1  |= 2<<20;	
	rTCNTB5  = g_dwMCLK/(Freq*16*8);	//定時器5的重裝值,在ENABLE之前設(shè)定	
	rTCON   |= 0x02000000;			//定時器5的MANUAL UPDATE BIT設(shè)為1
	rTCON   &= 0xf0ffffff;			//MANUAL UPDATE BIT清零
	rTCON   |= 0x05000000;			//定時器5 start, 設(shè)為INTERVAL模式
}
	
#define	MaxBeepFreq	20000
#define	MinBeepFreq	20
void SetBeepPwm(U16 Freq, U8 HiRatio)
{
	if(Freq>MaxBeepFreq)
		Freq = MaxBeepFreq;
	if(HiRatio>100)
		HiRatio = 100;	
	rTCON  	&= 0xffff0fff;					// clear manual update bit, stop Timer2
	rTCFG0 	&= 0xffff00ff;					// set Timer 2&3 prescaler 0
	rTCFG1 	&= 0xfffff0ff;					// set Timer 2 MUX 1/16
	rTCFG1  |= 0x00000300;	
	rTCNTB2	 = g_dwMCLK/(Freq*16);				//if set inverter off, when TCNT2<=TCMP2, TOUT is high, TCNT2>TCMP2, TOUT is low
	rTCMPB2  = (rTCNTB2*(100-HiRatio))/100;	//if set inverter on,  when TCNT2<=TCMP2, TOUT is low,  TCNT2>TCMP2, TOUT is high
	rTCON	|= 0x00002000;					// manual update
	rTCON	&= 0xffff0fff;	  				// clear manal update bit
	rTCON   |= 0x0000d000;					// auto reload, inverter on, start Timer 5
}

/****************************************************************************
功能		:點亮或者熄滅LED燈
 參數(shù)		:dwLedNo  指定對哪個LED操作
                 : bLight    指定點亮或者熄滅.TRUE 點亮,FALSE熄滅
返回值 :空
****************************************************************************/
void sysUtilsLightLed (U32 dwLedNo, BOOL bLight)
{
  switch (dwLedNo)
  {
    case LED_ALL:
      if (TRUE == bLight) 
        rPDATC |= 0x0E;
      else
        rPDATC &= ~0x0E;
      break;
    case LED1:
    case LED2:
    case LED3:
      if (TRUE == bLight)
        rPDATC |= MASK_BIT(dwLedNo);
      else
        rPDATC &= ~MASK_BIT(dwLedNo);
      break;
    default:
      break;
  }
}