pll.c

c8051120锁相环

#include<c8051f120.H>

#define count 1000
#define uchar unsigned char
#define uint unsigned int

extern void	SysclkInit();
extern void ExternalCrystal(void);
extern void PllInit();
extern void PortInit();
extern void Time3Init();
extern void ExtInterrupInit();

sbit LED = P1^6;

void TMR3Inr() interrupt 14 
{
    static uint i = 0;
    uchar SFRPAGE_SAVE = SFRPAGE;
	SFRPAGE = TMR3_PAGE;
	TF3 = 0;
	i++;
	if(i == 500)
	{
	    i = 0;
	    LED = !LED;
	}
	SFRPAGE = SFRPAGE_SAVE;
}

void main()
{
    WDTCN = 0xde;
	WDTCN = 0xad;
	//SysclkInit();
    //ExternalCrystal();
    PllInit();
    //ExtInterrupInit(); 
	PortInit();
	Time3Init();

	EA = 1;
	LED = 0; 
	while(1); 
}