tm_clk.c

LPC2292 bios测试程序 说明：YL_LPC229X_BIOS_Data的目录说明

#include "def.h"
#include "config.h"
#include "board.h"
#include "utils.h"
#include "option.h"
/*
static struct{
	U32 mclk;
	U32 pclk;
	U32 sclk;
	U32 freq;
} ClkPara;

static void set_pll(void)
{
	U32 i, j;
	
	if(ClkPara.mclk>255)
		ClkPara.mclk = 255;
	if(ClkPara.pclk>63)
		ClkPara.pclk = 63;
	if(ClkPara.sclk>3)
		ClkPara.sclk = 3;	
		
	j = ClkPara.sclk;
	i = 1;
	while(j--)
		i *= 2;
	
	ClkPara.freq = (EXT_OSC_CLK*(ClkPara.mclk+8))/((ClkPara.pclk+2)*i);
	if((ClkPara.freq>=90000000)||(ClkPara.freq<EXT_OSC_CLK)) {
		ClkPara.mclk = 53;
		ClkPara.pclk = 3;
		ClkPara.sclk = 1;
		ClkPara.freq = EXT_OSC_CLK*61/10;
	}
	
	rPLLCON = (ClkPara.mclk << 12) | (ClkPara.pclk << 4) | ClkPara.sclk;

}

void SystemClockInit(void)
{
//	set_pll();
}

U32 GetCpuClock(void)
{
	return ClkPara.freq;
}

U32 GetMasterClock(void)
{
	return GetCpuClock();
}

int SetSysClock(void)
{
	int mdiv, pdiv, sdiv;
	char tmp[4];
	
	printf("Please enter the PLL parameter to use, mdiv[0-255], pdiv[0-63], sdiv[0-3]\n");
	
	printf("mdiv: ");
	if((mdiv=strtodec(tmp, GetParameter(tmp, 3)))<0) {
		printf("\nget mdiv Error!\n");
		return -1;
	}					
	
	printf("\npdiv: ");
	if((pdiv=strtodec(tmp, GetParameter(tmp, 2)))<0) {
		printf("\nget pdiv Error!\n");
		return -1;
	}	
	
	printf("\nsdiv: ");
	if((sdiv=strtodec(tmp, GetParameter(tmp, 1)))<0) {
		printf("\nget sdiv Error!\n");
		return -1;
	}		
	
	printf("\nYou set System clock mdiv = %d, pdiv = %d, sdiv = %d\n", mdiv, pdiv, sdiv);
	
	Delay(10);
		
	ClkPara.mclk = mdiv;
	ClkPara.pclk = pdiv;
	ClkPara.sclk = sdiv;	
	
	set_pll();
	
//	Delay(0);
	return 0;
}

U32 GetSysClock(SysClock pSysClock[])
{
	pSysClock[0].name = "CPU";
	pSysClock[0].freq = GetCpuClock();	

	return 1;
}

void SetSysClockPara(void *addr)
{
	U32 *pData = addr;
	
	ClkPara.mclk = pData[0];
	ClkPara.pclk = pData[1];
	ClkPara.sclk = pData[2];
	
	set_pll();
}

void GetSysClockPara(void *addr)
{
	U32 *pData = addr;
	
	pData[0] = ClkPara.mclk;
	pData[1] = ClkPara.pclk;
	pData[2] = ClkPara.sclk;
	pData[3] = ClkPara.freq;
}
*/
/****************************************************************************
【功能说明】实时时钟默认时间设置
****************************************************************************/
void RTC_Def_Time_Set( void )
{
	PREINT = Fpclk / 32768 - 1;	// 设置基准时钟分频器
	PREFRAC = Fpclk - ( Fpclk / 32768 ) * 32768;

	YEAR = 2005;					// 初始化年
	MONTH = 3;					// 初始化月
	DOM = 8;					// 初始化日
	DOW = 4;
	HOUR = 9;
	MIN = 30;
	SEC = 0;

	CIIR = 0x00;					// 不产生中断
	CCR = 0x01;					// 启动RTC
}

void Delay( U32 ms )
{
	U32 CLK ;
	U32 DIV = 1000 * 100 ;
	
#ifdef __IN_CHIP	
	DIV = 1000 * 2 ;
#endif

#ifdef __OUT_CHIP    
	DIV = 1000 * 30 ;
#endif

	CLK = ( Fcclk / DIV ) * ms ;

	while ( CLK-- ) ;		//这个语句需要两条汇编指令
}

void Delay_uS( U32 us )	//以uS为延时单位
{
	U32 CLK = ( Fcclk / 1000000 ) * us / 2 ;

	while ( CLK-- ) ;		//这个语句需要两条汇编指令
}


int WaitEventWithTimeout( int ( *event ) ( void ) , int cond , U32 ms )
{
	U32 i ;
	int result;

	while ( ms-- )
	{
		result = ( *event ) ();
		if ( cond )
		{
			if ( result )
				return 0;
		}
		else
		{
			if ( !result )
				return 0;
		}

		for ( i = 0; i < 5000; )
			i++ ;
	}

	return -1;
}

/*************************************************************/
void RtcSetDay( TIME_STRUC* time )
{
	YEAR = time->year ;	//年
	MONTH = time->month;		//月
	DOM = time->day;		//日	
}

void RtcSetWeek( TIME_STRUC* time )
{
	DOW = time->weekday;
}

void RtcSetTime( TIME_STRUC* time )
{
	HOUR = time->hour;		//小时
	MIN = time->min;		//分
	SEC = time->sec;		//秒
}



/****************************************************************************
函数名称：RTC_Initial()
功能说明：初始化实时时钟。
****************************************************************************/
void RTC_Initial( void )
{
	PREINT = Fpclk / 32768 - 1;			// 设置基准时钟分频器
	PREFRAC = Fpclk - ( Fpclk / 32768 ) * 32768;
	CCR = 0x01;							// 启动RTC
}

void RtcGetTime( TIME_STRUC* time )
{
	time->year = YEAR ;
	time->weekday = DOW ;
	time->month = MONTH ;
	time->day = DOM ;
	time->hour = HOUR ;
	time->min = MIN ;
	time->sec = SEC ;
}