mb1504.c

锁相环MB1504的c语言驱动程序 51单片机控制 完整版

/*        
//数字锁相环（MB1504）驱动程序
//针对晶体 采用 12M 步进采用 10 KHz 的驱动程序
//        12M / 10K = 1200 = 0x04b0
//        Refer counter          = ( 0x04b0 << 1 ) & 0x8001          SW = 32
//        Refer counter          = ( 0x0960 ) & 0x8001
// Refer counter          = 0x8961 ;

//针对使用频率范围为  8M -> 60M
//                        Frequence
//                8M                                60M
//                800                                6000
//                0x0320                        0x1770
//   peijianguo 
*/
#include < reg52.h >
#include < intrins.h >

sbit CLK  = P1^0;        //// 9 脚
sbit DATA = P1^1;        //// 10脚
sbit LE   = P1^2;        //// 11脚

void Send16Bit( unsigned int SendData )
{
  unsigned char i;
  unsigned int SendMiddle; 

  SendMiddle = SendData;
   LE = 0;      
   CLK = 0;
  for( i = 0; i < 16; i ++ )
          {
                DATA = ( SendMiddle & 0x8000 );
                _nop_( );        CLK = 1;
                _nop_( );        CLK = 0;
                SendMiddle = SendMiddle << 1;
          }
  LE = 1;          _nop_( );          LE = 0;
}

void Send11Bit( unsigned int SendData )
{
  unsigned char i;
  unsigned int  SendMiddle;
  
  SendMiddle = SendData;
  LE = 0;        CLK = 0;
  for( i = 0; i < 11; i ++ )
          {
         DATA = ( SendData & 0x8000 );
         _nop_( );        CLK = 1;
         _nop_( );        CLK = 0;
         SendData = SendData << 1;
        }
}

void Send8Bit( unsigned char SendData )
{
  unsigned char i;
  unsigned char SendMiddle;

  SendMiddle = SendData;
  for( i = 0; i < 8; i ++ )
          {
         DATA = ( SendData & 0x80 );
         _nop_( );        CLK = 1;
         _nop_( );        CLK = 0;
         SendData = SendData << 1;
        }
  LE = 1;        _nop_( );        LE = 0;
}

void SendReferF( void )
{ //针对晶体 采用 12M 
  Send16Bit( 0x8961 ); // 12M Crystal
}

void FrequenceToSend( unsigned int FrequenceD )
{
  unsigned char AD = 0,        i  = 0;
  unsigned int  ND = 0,        MiddleF = 2000;

  if( ( FrequenceD >= 800 ) && ( FrequenceD <= 6000 ) )
   {                   // 限制  锁定频率范围
          MiddleF = FrequenceD;
          ND = ( unsigned int  ) ( MiddleF / 32 );
          AD = ( unsigned char ) ( MiddleF % 32 );
          ND = ND << 5;                AD = AD << 1;        AD = AD & 0xfe;//////////
          Send11Bit( ND );        Send8Bit( AD );
   }
}

void main( void )
{
SendReferF( );           ////MB1504   送基准数 // 初始化
FrequenceToSend( 4800 );  ////MB1504        送30 M 
while( 1 )
        {
        }
}