display.h

dsp2407操作7219的完整项目例程 拿来稍作修改(硬件对应)立马好用 应用直观,学习方便,本人独自开发测试并成功应用

void send(unsigned char add,unsigned char dat)       //发送16位数据
{
  unsigned char A,B,i,j;
  j=1; 
  wait(10);
  CLK_0; 
  wait(10);
  while(j<16)
  {
    if(j<8)
      {A=add;}
    else {A=dat;}
    for(i=1;i<=8;i++)
    {
      B=A&0x80;
      if (B==0) DIN_0;
      else DIN_1; 
      wait(10);
      CLK_1;
      wait(10);
      CLK_0; 
      wait(10);
      A=A<<1;
    }
    j=j+8;
  }
}

void sends1(unsigned char n,unsigned char add,unsigned char dat)    //发送64位数据
{
  unsigned char i;
 // wait(10);
  LOAD_0;
 // wait(10);
  for(i=0;i<1;i++)
  {
    if(i==1-n) send(add,dat);
    else send(0x00,0x00);
  }  
 // wait(10);
  LOAD_1;
 // wait(10);
}
  void sends(unsigned char n,unsigned char add,unsigned char dat)    //发送64位数据
{
  unsigned char i;
  wait(10);
  LOAD_0;
  wait(10);
  for(i=0;i<5;i++)
  {
    if(i==5-n) send(add,dat);
    else send(0x00,0x00);
  }  
  wait(10);
  LOAD_1;
  wait(10);
}

void disconnect(unsigned int d,unsigned char x[4])        //化整为零
{
  x[0]=d/1000;
  x[1]=d%1000/100;
  x[2]=d%100/10;
  x[3]=d%10;
}
void display3(unsigned int D,unsigned char digitron)  //远控盒及时时显示
{
  unsigned char digit[4];        //用来保存参数各位的值
  if(D>50000)
  {
    D=-D;
    disconnect(D,digit);
    digit[0]=0x0a;
    if(D<100)digit[1]=0x0f;
  }
  else
  {
    disconnect(D,digit);
    if(D<100)
    {
      digit[0]=0x0f;
      digit[1]=0x0f;
    }
    else if(D<1000)
      digit[0]=0x0f;
  }
  sends(digitron/2+1,1+4*(digitron%2),digit[0]);
  sends(digitron/2+1,2+4*(digitron%2),digit[1]);
  sends(digitron/2+1,3+4*(digitron%2),digit[2]|0x80);
  sends(digitron/2+1,4+4*(digitron%2),digit[3]);
}