1420ex.c

很有用的CYGNAL C语言程序,

#include<c8051f020.h>
sbit		a0=P2^0;
sbit		a1=P2^1;
sbit		a2=P2^2;
sbit	    a3=P2^3;
sbit		a4=P2^4;
sbit		a5=P2^5;
sbit		a6=P2^6;
sbit	    a7=P2^7;
sbit	 playl=P1^0;

unsigned char i=0,j=0;			//adress
void yan50m(unsigned char);
void delay(long int);
void senddata(unsigned char,unsigned char);
void setoff(unsigned char);

void xbrs(void)
{
	XBR2=0x40;
	P1MDOUT=0xFF;
	P2MDOUT=0xFF;
}
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;
}

main()
{
	clock();
	xbrs();
	setoff(1);
	TCON|=0x01;
	TMOD=0x11;
	senddata(1,(i%10+0x80));
	senddata(2,i/10);
	senddata(1,0);
	yan50m(20);
	a0=0;/*操作模式*/			
	P2=0x00;
	playl=1;
 	while(1)
	{
		senddata(1,i);
		senddata(2,j);
		yan50m(20);
		i++;
		if(i>9)
		{	
			i=0;
			j++;
		}
	}					
}