//船用對(duì)講機(jī)顯示子程序 HT1621 designed for marenwu 2003.2.9
#include <djj.h>

#define SYS_OSC   0x01   //打開(kāi)系統(tǒng)振蕩器------------SYS_EN
#define BIAS      0x29   //LCD1/3偏置,4背級(jí)
#define INTRC     0x18   //選擇晶體振蕩器------------RC  256K
#define LCD_NO    0x03   //打開(kāi)LCD偏置發(fā)生器-----------LCD  ON

code unsigned char disp_symbol[15]={0x9f,0x0a,0xa7,0x2f,0x3a,0x3d,0xbd,0x0b,0xbf,0x3f,0x95,0xba,0xb1,0x20,0xbb};
                                  /* '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'C', 'H', 'F', '-' ,'A'*/
unsigned char disp_data[16];

void led(unsigned char);
void delay1(unsigned char);       //長(zhǎng)延時(shí)子程序
void delay(unsigned char);        //延時(shí)子程序
void HT1621_init(void);                         //HT1621初始化
void HT1621_Wbit(unsigned char,unsigned char);  //向HT1621發(fā)送位數(shù)據(jù)(位數(shù),發(fā)送數(shù)據(jù))
void display(void);                             //向HT1621發(fā)送顯示數(shù)據(jù)
void tone();
unsigned char didi;

////////////////////////////////////////////

void HT1621_init()
{ SDI=1;
  SDO=1;
  CS_1621=0;
  CS_0832=1;
  HT1621_Wbit(3,0x80);     //發(fā)送"100"命令字
  HT1621_Wbit(9,SYS_OSC);
  HT1621_Wbit(9,BIAS);
  HT1621_Wbit(9,INTRC);
  HT1621_Wbit(9,LCD_NO);
  CS_1621=1;
}

void display()      //刷新顯示子程序
{ unsigned char x,y;
  CS_1621=0;
  CS_0832=1;
  HT1621_Wbit(3,0xa0);     //發(fā)送"101"命令
  HT1621_Wbit(6,0x0);      //發(fā)送"00000"起始地址,和最后的地址要加以區(qū)分    !!!!!!!!!
                           //必須將起始地址發(fā)送為000000 因?yàn)樽詈蟮牡刂窞?00000 后5位同樣為0
  for(x=0;x<16;x++)        //16
   {
        y=disp_data[x];
        HT1621_Wbit(8,y);
   }
  CS_1621=1;
 }

void HT1621_Wbit(unsigned char d_bit,unsigned char d_data)       //x--發(fā)送數(shù)據(jù)位數(shù)　y--發(fā)送的數(shù)據(jù)值
{ unsigned char x;
  for(x=0;x<d_bit;x++)
   {    SDI=0;
        if(d_data>=0x80)SDO=1;
             else SDO=0;
        d_data=d_data<<1;
        SDI=1;
   }
}

void delay(unsigned char x)
{ register unsigned char m;
  for(m=0;m<x;m++);//{_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();} //for test ???????

}

void delay1(unsigned char x)
{ unsigned char m;
  for(m=0;m<x;m++)
   delay(0xff);
}

/*void tone()
{ CS_1621=0;
  HT1621_Wbit(3,0x80);     //發(fā)送"100"命令字
  HT1621_Wbit(9,0x60);
  HT1621_Wbit(9,0x09);
  delay(250);
  HT1621_Wbit(9,0x08);
  CS_1621=1;
} */

void tone()
{    register unsigned char i;
//     HIGH_CHAN=1;
     SPEAK=1;
     _nop_();
     SPEAK=0;
     delay(0);
     SPEAK=1;
     delay(1);
     for(i=0;i<80;i++)//90
     {    SPEAK=0;

          delay(1);
          _nop_();
          _nop_();
          _nop_();
          _nop_();
          SPEAK=1;
          delay(0);

     }
     SPEAK=0;
     delay(1);
     SPEAK=1;
     _nop_();
     SPEAK=0;
     delay(10);
//     HIGH_CHAN=0;
}