init.c

这是EBF533试验板的源代码和使用说明手册

/********************************************************************************/
/*                                                                              */
/********************************************************************************/
#include "ccblkfn.h"
#include "sysreg.h"

#include <cdefBF533.h>

#include "cpld.h"
#include "Sys.h"
#include "Regdef.h"

PLLCTRL mypllctrl;
PLLDIV myplldiv;
/********************************************************************************/
/*                                                                              */
/********************************************************************************/
void Delay(unsigned int Value)
{
	unsigned int i=0;
	for(i=0;i<Value;i++)
		{;		
		}
}

void Init_Flags(void)
{
	*pFIO_INEN		= 0x0080;//flag input enable register, enable PF7
	*pFIO_DIR		= 0x0000;//flag direction register, all PFs are input 
	*pFIO_EDGE		= 0x0000;//flag interrupt sentivity register, PF7 level
	*pFIO_MASKA_D	= 0x0080;
}

void Init_EBIU(void)
{
	*pEBIU_AMBCTL0	= 0x7bb07bb0;
	*pEBIU_AMBCTL1	= 0xffff7bb0;//use ARDY
//	*pEBIU_AMBCTL1	= 0xfffc7bb0;//not use ARDY
	*pEBIU_AMGCTL	= 0x000f;
}

void Init_PLL(void)
{
    int iIMASK_Value;
	sysreg_write(reg_SYSCFG, 0x32);		//Initialize System Configuration Register

	// set VCO/CCLK = 1, and VCO/SCLK = 5 (take effect immediately)
	*pPLL_DIV = 0x0007;

	// prepare PLL changes (set CLKIN/VCO = 22; takes effect after PLL programming sequence)
	*pPLL_LOCKCNT	= 0x0200;					// time for PLL to stabilize
	*pPLL_CTL		= 0x2c00;					// set VCO/CLKIN = 22

	// execute PLL programming sequence
	*pSIC_IWR		= 0x00000001;				// enable only PLL wakeup interrupt
	iIMASK_Value	= cli();					// disable interrupts
	idle();										// wait for PLL wakeup interrupt
	sti(iIMASK_Value);	


}//end Init_PLL 

void Init_CtrlReg(void)
{
	*pCtrlReg1_S = 0x41;
	Delay(10000);
}