AVR (ATMEGA128/ATMEGA16) digital tube display

PROTEUS simulation diagram

/****************led digital tube header file************************/
#ifndef __led_H__
#define __led_H__

#define led_wei_ddr  DDRD|=0X0F
#define led_wei PORTD
#define led_duan_ddr DDRF=0XFF
#define led_duan PORTF

extern void led_display(uint dat,uchar num);

#endif

/************C file of led digital tube display function************/
#include "config.h"

//With 0x7f above, there is a decimal point
//Common table
uchar flash table[]={0xc0,0xf9,0xa4,0xb0,0x99,
0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};

void show(uchar j,uchar k)
{ 
    led_wei|=0x0F; //If the position is changed, this should also be changed to clear the screen
                    //Common anode and common cathode and high and low level drive are also different
 led_wei&=~BIT(k);
 /*if(k==1) //This is used to add a decimal point to the required position
 {
   led_duan=table[j]&0x7f;
   delayms(4);
 }*/
 led_duan=table[j];
 delayms(4);
}

/*****************Digital tube output function****************/
void led_display(uint dat,uchar num)//dat is the number to be output, num is the number of digits to be output
{    
  uchar i,ad[4];
     led_duan_ddr;     
     led_wei_ddr;  
   for(i=0;i    {
     ad[i]=dat%10;
  dat=dat/10;
   }
   for(i=0;i    {  
      show(ad[i],i);
   delayms(1);       
   }
   
}

/****************Delay function related file******************/
#ifndef __delay_H__
#define __delay_H__

extern void delayms(uint t);

#endif

/**************C file of one millisecond delay function********************/
#include "config.h"

/*********One millisecond delay function**********/
void delayms(uint t)
{
    uint i,j;
 for(i=0;i    {
     for(j=0;j<1141;j++);
   }
}

/***************Total header file*******************/
#ifndef __config_H__
#define __config_H__

#include
#include

#define uchar unsigned char 
#define uint unsigned int

#include "delay.h"
#include "led.h"

#endif

/****************C file of the main function****************************/
#include "config.h"

void main()
{
   while(1)
     {
       led_display(1234,4);
     }
}