fout.c

很有用的CYGNAL C语言程序,

#include<c8051f020.h>
void delay(long int);
void senddata(unsigned char,unsigned char);
void setoff(void);
void clock(void);
void xbrs(void);
void outfs(void);
unsigned int i=0;
void t0int(void) interrupt 1
{
	i++;
	senddata(3,i/100);
	senddata(2,i%100/10);
	senddata(1,i%10);
	TH0=0x3c;
	TL0=0xb0;
}

main()
{
	clock();
	xbrs();
	outfs();
	setoff();
	EA=1;
	ET0=1;
	TMOD=0x05;
	TH0=0x3c;
	TL0=0xb0;
	TR0=1;
	CR=1;
	while(1);
}

void clock(void)			//clock det
{
	unsigned char e;
	WDTCN=0xde;				//CLOSE WDOG
	WDTCN=0xad;
	OSCXCN=0x67;			//ENABLE EXTERNAL CLK
	delay(10000);
    delay(10000);
	e=!OSCXCN&0x80;
	while(e); 
    OSCICN|=0x08;
}

void xbrs(void)				//ENABLE XBR,CEX0,INT0
{
	XBR2=0x40;
	XBR1=0x02;
	XBR0=0x0E;
	P0MDOUT=0xFF;
	P1MDOUT=0xFF;
}

void outfs(void)			// out f
{
	PCA0CN=0x00;		
	PCA0MD=0x08;			//SYSTEM CLOCK 1/12
	PCA0CPL0=0x00;
	PCA0CPH0=0x78;
	PCA0CPM0=0x46;			//ENABLE CCF0 INT
}