TLC549 CVAVR Program

// Chip ATMEGA16L 
// Clock 4MHz internal
// Use system built-in delay program

#include  
#include

#define hc164_da ta PORTD.0 // 164 data line
#define hc164_clk PORTD.1 // 164 clock line
 
#define CLK549 PORTD.4 // tlc549 clock line, PD4 output
#define DA TA549 PIND.5 // tlc549 data line, PD5 input
#define CS549 PORTD.6 // tlc549 chip select line, PD6 output

void hc164_send_byte (unsigned char byte); // 164 output subroutine
void leddisplay (void); // digital tube display subroutine
unsigned char TLC549_ADC (void); //AD conversion subroutine

unsigned char ledxs[8]={16,16,16,16,16,0,0,0}; // Digital tube display buffer
                // AD conversion value hundreds, tens, and units  
flash unsigned char tab[]={0xb7,0x12,0x67,0x76,0xd2,0xf4,0xf5,0x16,0xf7,0xf6,0xd7,0xf1,0xa5,0x73,0xe5,0xc5,0,0xff};
                          // Common cathode code 0-F, all off, all on
void main()
{
   unsigned char ad_value,temp,j;   
   j=1;while(--j); // One cycle 11 cycles, 4M crystal oscillator, delay 2.75us
   delay_ms(200);  
   DDRD = 0x53; // PD0, PD1 (164 driver) are set to output mode;  
                         // PD4, PD6 (tlc549 clock and chip select) are set to output mode, PD5 (tlc549 data line) is set to input mode
   while(1)
   {
     ad_value = TLC549_ADC(); //Read AD conversion value
     temp = ad_value/100;
     ledxs[5] = temp; //Get the AD conversion value hundreds digit
     temp = ad_value%100;
     ledxs[6] = temp/10; //Get the AD conversion value tens digit
     ledxs[7] = temp%10; //Get the AD conversion value ones digit
     leddisplay(); //Serial display
     delay_ms(1000);
   }
}
unsigned char TLC549_ADC(void)
{
      unsigned char value=0;
      unsigned char i,j;
      CS549=1;  
      j=2;while(--j);
      CLK549=0;
      j=2;while(--j);
      CS549=0; //Chip start
      j=2;while(--j); //Wait for delay
      for(i=0;i<8;i++) //Input sampling conversion clock (pre-sampling)
      {
         CLK549=1;
         j=1;while(--j);
         CLK549=0;  
         j=1;while(--j);
      }
      CS549=1; //Start conversion
      j=10;while(--j); //Wait for conversion to end

      CLK549=0;
      j=2;while(--j);
      CS549=0; //Start reading the conversion result
      j=2;while(--j);
      for(i=0;i<8;i++) // Read sample value
      {
         CLK549=1;
         j=1;while(--j);
         value<<=1;
         value|=DA TA549;
         CLK549=0;  
         j=1;while(--j);
      }
      CS549=1;
      j=10;while(--j);
      return(value); //Return the conversion result
}
void leddisplay() // Digital tube display subroutine
{
  unsigned char i;
  for(i=0;i<8;i++)
  {
     hc164_send_byte (tab[ledxs[i]]);
     delay_us(2);
  }
} 
void hc164_send_byte (unsigned char byte) // 164 output subroutine
{
  unsigned char i;
   for(i=0;i<8;i++)
   {
      hc164_da ta = byte & ( 1 << i );       
      hc164_clk = 1;       
      hc164_clk = 0;   
   }  
}