mb1504_driver.c

MB1504锁相环芯片的51单片机驱动程序,可以根据需要修改合适的分频值来完成频率合成配置.

#include "reg52.h"
#include "user.h"
#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long

sbit clk =P3^2;
sbit dat=P0^1;
sbit en=P3^3;





void init_reference_reg()
{
	uint temp=0x1001;
	uchar i;
	en=0;
	clk=0;
	for(i=0;i<16;i++)
	{
		if(temp & 0x8000)
		dat=1;
		else
		dat=0;
		clk=1;
		temp<<=1;
		clk=0;
	}
	en=1;
	en=1;
	en=0; 	
}

void write_counter_reg()
{
	ulong temp;
	uchar i;
	temp=0x0faf0000;
	
	en=0;
	clk=0;
	for(i=0;i<19;i++)
	{
		if(temp & 0x80000000)
			dat=1;
		else
			dat=0;
		clk=1;
		temp<<=1;
		clk=0;
	}
	en=1;
	en=1;
	en=0;
	

	 
}



void main()
{
	delay(20);
	init_reference_reg();
	write_counter_reg();
	while(1);
}