#include <REGX51.H>

#include <intrins.h>

#define uchar unsigned char

#define uint unsigned int

#define _Nop() _nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_()

#define BIAS   0x52                //0b1000 0101 0010  1/3duty 4com

#define SYSDIS 0X00           //0b1000 0000 0000

#define SYSEN  0X02           //0b1000 0000 0010

#define LCDOFF 0X04           //0b1000 0000 0100

#define LCDON  0X06           //0b1000 0000 0110

#define XTAL   0x28           //0b1000 0010 1000

#define RC256  0X30           //0b1000 0011 0000

#define TONEON  0X12           //0b1000 0001 0010

#define TONEOFF 0X10           //0b1000 0001 0000

#define WDTDIS  0X0A        //0b1000 0000 1010

//

sbit HT1621_DAT=P3^4;                //HT1621

sbit HT1621_CS=P3^2;    //HT1621

sbit HT1621_WR=P3^3;    //HT1621

   

uchar code Ht1621Tab[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};



//delay us

void Delay(uchar us)  //5,7,9

{

while(--us); 

}





//delay ms

void DelayMS(uint iMs)

{

uint i,j;

   for(i=0;i<iMs;i++)

    for(j=0;j<65;j++) Delay(1);

      

}







/******************************************************



*******************************************************/

void Ht1621Wr_Data(uchar Data,uchar cnt)

{

  uchar i;

  for (i=0;i<cnt;i++)

  {  

    HT1621_WR=0;

        _Nop();

        HT1621_DAT=Data&0x80;                              

    _Nop();

    HT1621_WR=1;

    _Nop();

    Data<<=1; 

  }

}





/********************************************************

void Ht1621WrCmd(uchar Cmd)

********************************************************/

void Ht1621WrCmd(uchar Cmd)

{

  HT1621_CS=0;

  _Nop();

  Ht1621Wr_Data(0x80,4);        //

  Ht1621Wr_Data(Cmd,8);                //

  HT1621_CS=1;

  _Nop(); 

}





/********************************************************

void Ht1621WrOneData(uchar Addr,uchar Data)

********************************************************/

void Ht1621WrOneData(uchar Addr,uchar Data)

{

  HT1621_CS=0;

  Ht1621Wr_Data(0xa0,3);                //

  Ht1621Wr_Data(Addr<<2,6);        //

  Ht1621Wr_Data(Data<<4,4);        //

  HT1621_CS=1;  

  _Nop(); 

}



/********************************************************

void Ht1621WrAllData(uchar Addr,uchar *p,uchar cnt)

********************************************************/

void Ht1621WrAllData(uchar Addr,uchar *p,uchar cnt)

{

  uchar i;

  HT1621_CS=0;

  Ht1621Wr_Data(0xa0,3);        //

  Ht1621Wr_Data(Addr<<2,6);        //

  for (i=0;i<cnt;i++)

  {

          Ht1621Wr_Data(*p,8);        //

        p++;

  }

  HT1621_CS=1;  

  _Nop(); 

}







/********************************************************

void Ht1621_Init(void)

********************************************************/

void Ht1621_Init(void)

{

  HT1621_CS=1;

  HT1621_WR=1;

  HT1621_DAT=1;

  DelayMS(2000);                             //

  Ht1621WrCmd(BIAS);

  Ht1621WrCmd(RC256);            //

  Ht1621WrCmd(SYSDIS);

  Ht1621WrCmd(WDTDIS);

  Ht1621WrCmd(SYSEN);

  Ht1621WrCmd(LCDON);

}





void main()

{

  uchar i,j,t;

  Ht1621_Init();     //



  DelayMS(1000);        //

   

  while(1){



                Ht1621WrAllData(0,Ht1621Tab,16);//

          for (i=0;i<32;i++)

                {

                        t=0x01;

                        for (j=0;j<4;j++)

                        {

                                Ht1621WrOneData(i,t);

                                t<<=1;

                                t++;

                                P1_5=~P1_5;                        

                          DelayMS(5000);

                        }



                }           

  }

}