init_led.c

这是C8051F020的源程序

#include <c8051f020.h>

sbit CLK=P1^3;
sbit DIN=P1^1;
sbit LOAD=P1^2;

extern void delay(long int);

void senddata(unsigned char ad,unsigned char d)
{
	int i;
	LOAD=0;
	for(i=0;i<8;i++)
	{
		CLK=0;
		if((ad&0x80))
			DIN=1;
		else DIN=0;
		CLK=1;
		ad=ad<<1;
	}
	for(i=0;i<8;i++)
	{
		CLK=0;
		if((d&0x80))
			DIN=1;
		else DIN=0;
		CLK=1;
		d=d<<1;
	}
	LOAD=1;
	delay(50);
}
void init_led()
{
	senddata(0x09,0xff);
	senddata(0x0a,0x07);
	senddata(0x0b,0x07);
	senddata(0x0c,0x01);
	senddata(0x0f,0x00);
}