Blue Bridge Cup SCM digital tube skills

How to use nixie tube

1 How to use the nixie tube with the key switch interface to display the switch interface

Method : Define a variable to display the display interface ; Press the key to change the value of the variable ; So as to switch the display interface .

#include <STC15F2K60S2.H>

void  Device_ctrl(unsigned char p2date,unsigned char p0date)// Latch control function 
{
		P0=p0date; 
	  P2=(P2&0X1F)|p2date;
	  P2&=0X1F;
}

unsigned char smg_count;
unsigned char smg_display[8];
unsigned char smg_du[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};// Common anode segment code 
unsigned char display_mode;// Interface display 

void smg_show()
{
		unsigned int i;
	  Device_ctrl(0xc0,0);
	  Device_ctrl(0xe0,~smg_display[i]);
		Device_ctrl(0xc0,0x01<<i);
	  i=(i+1)%8;
}

void smg_process()
{
		if(smg_count>3)
    {
			smg_count=0;
			 
			if(display_mode==0)// Show the first interface 
			{
				smg_display[0]=smg_du[0];
				smg_display[1]=smg_du[1];
				smg_display[2]=smg_du[2];
				smg_display[3]=smg_du[3];
				
				smg_display[4]=smg_du[4];
				smg_display[5]=smg_du[5];
				smg_display[6]=smg_du[6];
				smg_display[7]=smg_du[7];
			}
			
			if(display_mode==1)// Display the second interface 
			{
				smg_display[0]=smg_du[1];
				smg_display[1]=smg_du[2];
				smg_display[2]=smg_du[3];
				smg_display[3]=smg_du[4];
				
				smg_display[4]=smg_du[5];
				smg_display[5]=smg_du[6];
				smg_display[6]=smg_du[7];
				smg_display[7]=smg_du[8];
			}
		}
}

unsigned char trig_btn;
unsigned char con_btn;
unsigned int key_count;

void key_btn()// Key scan function 
{
		unsigned char readdate=P3^0xff;
	  trig_btn=readdate&(con_btn^0xff);
	  con_btn=readdate;
}

void key_process()// Key handling functions 
{
		if(key_count>10)// Scan the keys every ten milliseconds 
		{
			  key_count=0;
			  key_btn();
				if(trig_btn==0x08)// Key s4
				{
					display_mode++;
					if(display_mode==2)// Switch interface 0 1
					{
						display_mode=0;
					}
				}
		}
}
void Timer2Init()		//1 millisecond @12.000MHz
{
	AUXR &= 0xFB;		// Timer clock 12T Pattern 
	T2L = 0x18;		// Set initial value of timing 
	T2H = 0xFC;		// Set initial value of timing 
	AUXR |= 0x10;		// Timer 2 Start timing 
	IE2|=0x04;
	EA=1;
}

void main()
{
	 
	  Timer2Init();
	  Device_ctrl(0x80,0xff);
	 
		while(1)
		{
			smg_process();
			key_process();
		}

}

void service_timer2() interrupt 12
{
		smg_count++;
	  key_count++;
	  smg_show();
}

2 How to make the nixie tube data turn on and off in one second

Set a one second timer in the timer ; Then use a flag bit to display , If you let the nixie tube light up in one second, it will go out in one second .

#include <STC15F2K60S2.H>

void  Device_ctrl(unsigned char p2date,unsigned char p0date)
{
		P0=p0date; 
	  P2=(P2&0X1F)|p2date;
	  P2&=0X1F;
}

unsigned char smg_count;
unsigned char smg_display[8];
unsigned char smg_du[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
unsigned char display_mode;

void smg_show()
{
		unsigned int i;
	  Device_ctrl(0xc0,0);
	  Device_ctrl(0xe0,~smg_display[i]);
		Device_ctrl(0xc0,0x01<<i);
	  i=(i+1)%8;
}
bit smg_blink;
void smg_process()
{
		if(smg_count>3)
    {
			smg_count=0;
			
			 if(smg_blink)
			 {
				  smg_display[0]=smg_du[0];
					smg_display[1]=smg_du[1];
					smg_display[2]=smg_du[2];
					smg_display[3]=smg_du[3];
					
					smg_display[4]=smg_du[4];
					smg_display[5]=smg_du[5];
					smg_display[6]=smg_du[6];
					smg_display[7]=smg_du[7];
			 }
			 else
			 {
					smg_display[0]=0x00;
					smg_display[1]=0x00;
					smg_display[2]=0x00;
					smg_display[3]=0x00;
					
					smg_display[4]=0x00;
					smg_display[5]=0x00;
					smg_display[6]=0x00;
					smg_display[7]=0x00;
			 }
			 
			
		}
}


void Timer2Init()		//1 millisecond @12.000MHz
{
	AUXR &= 0xFB;		// Timer clock 12T Pattern 
	T2L = 0x18;		// Set initial value of timing 
	T2H = 0xFC;		// Set initial value of timing 
	AUXR |= 0x10;		// Timer 2 Start timing 
	IE2|=0x04;
	EA=1;
}

void main()
{
	  Timer2Init();// Timer initialization 
	  Device_ctrl(0x80,0xff);
	 
		while(1)
		{
			smg_process();
	
		}

}

void service_timer2() interrupt 12// Timer uses function 
{
	  unsigned int time_count;// Timer timing variable 
	  time_count++;
	  if(time_count>1000)// Timed for a second 
		{
			time_count=0;
			smg_blink=!smg_blink;
		}
		smg_count++;
	  smg_show();
}

3 The nixie tube displays useful data , Off if not displayed .

Method : Judge according to the ten hundreds and thousands

#include <STC15F2K60S2.H>

void  Device_ctrl(unsigned char p2date,unsigned char p0date)
{
		P0=p0date; 
	  P2=(P2&0X1F)|p2date;
	  P2&=0X1F;
}

unsigned char smg_count;
unsigned char smg_display[8];
unsigned char smg_du[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
unsigned char display_mode;
unsigned int number=12345;
void smg_show()
{
		unsigned int i;
	  Device_ctrl(0xc0,0);
	  Device_ctrl(0xe0,~smg_display[i]);
		Device_ctrl(0xc0,0x01<<i);
	  i=(i+1)%8;
}

void smg_process()
{
		if(smg_count>3)
    {
			smg_count=0;
			
			 if(number>9999)// If it is greater than 9999
			 {
				    smg_display[0]=0x00;
						smg_display[1]=0x00;
						smg_display[2]=0x00;
						smg_display[3]=smg_du[number/10000];
						
						smg_display[4]=smg_du[number/1000%10];
						smg_display[5]=smg_du[number/100%10];
						smg_display[6]=smg_du[number/10%10];
						smg_display[7]=smg_du[number%10];
			}
			else if(number>999)	// If it is greater than 999  
			{
						smg_display[0]=0x00;
						smg_display[1]=0x00;
						smg_display[2]=0x00;
						smg_display[3]=0x00;
						
						smg_display[4]=smg_du[number/1000%10];
						smg_display[5]=smg_du[number/100%10];
						smg_display[6]=smg_du[number/10%10];
						smg_display[7]=smg_du[number%10];
			}
			else if(number>99)// If it is greater than 99
			{
						smg_display[0]=0x00;
						smg_display[1]=0x00;
						smg_display[2]=0x00;
						smg_display[3]=0x00;
						
						smg_display[4]=0x00;
						smg_display[5]=smg_du[number/100%10];
						smg_display[6]=smg_du[number/10%10];
						smg_display[7]=smg_du[number%10];
			}
			else if(number>9)// If it is greater than 9
			{
						smg_display[0]=0x00;
						smg_display[1]=0x00;
						smg_display[2]=0x00;
						smg_display[3]=0x00;
						
						smg_display[4]=0x00;
						smg_display[5]=0x00;
						smg_display[6]=smg_du[number/10%10];
						smg_display[7]=smg_du[number%10];
			}
			else
			{
						smg_display[0]=0x00;
						smg_display[1]=0x00;
						smg_display[2]=0x00;
						smg_display[3]=0x00;
						
						smg_display[4]=0x00;
						smg_display[5]=0x00;
						smg_display[6]=0x00;
						smg_display[7]=smg_du[number%10];
			}
		}
}


void Timer2Init()		//1 millisecond @12.000MHz
{
	AUXR &= 0xFB;		// Timer clock 12T Pattern 
	T2L = 0x18;		// Set initial value of timing 
	T2H = 0xFC;		// Set initial value of timing 
	AUXR |= 0x10;		// Timer 2 Start timing 
	IE2|=0x04;
	EA=1;
}

void main()
{
	  Timer2Init();// Timer initialization 
	  Device_ctrl(0x80,0xff);
	 
		while(1)
		{
			smg_process();
	
		}

}

void service_timer2() interrupt 12// Timer uses function 
{
	 
		smg_count++;
	  smg_show();
}