锁相环MC145170基本控制程序

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锁相环MC145170基本控制程序 [复制链接]

#include <REG51.h>

#define c_register 7

#define n_register 15

#define r_register 14

sbit Din = P2^1;

sbit ENB = P2^2;

sbit CLK = P2^3;

void MC145170_Reset(void)

{

unsigned char Bit_shift_counter;

Bit_shift_counter=0;

CLK=0;

ENB=1;

Din=0;

while(Bit_shift_counter<4)

{

CLK=1;

Bit_shift_counter++;

CLK=0;

}

/* ENB????,???????,Din???0? */

Bit_shift_counter=0;

ENB=0;

while(Bit_shift_counter<3)

{

CLK=1;

Bit_shift_counter++;

CLK=0;

}

/* ENB????,???????,Din?1? */

Din=1;

CLK=1;

CLK=0;

/* ENB????,???????,Din?0. */

Din=0;

CLK=1;

CLK=0;

/* ?????????,??Reset */

ENB=1;

}

void MC145170_Write_C_N_R_BitGrabber_Register(char BitGrabber_Register,unsigned int Bit_Stream)

{

CLK =0;

ENB =0;

while (BitGrabber_Register>=0)

{

Din=(Bit_Stream>>BitGrabber_Register)&0x0001; //???????????,&0x0001???

CLK=1; //???????

CLK=0;

BitGrabber_Register --;

}

ENB=1; //????

}

void main()

{

MC145170_Reset();

MC145170_Write_C_N_R_BitGrabber_Register( c_register,0x63);

MC145170_Write_C_N_R_BitGrabber_Register( r_register,5000);  

MC145170_Write_C_N_R_BitGrabber_Register( n_register,12648);

while(1);

}