SCM C language program design: timer control digital tube dynamic display

Single chip microcomputer STM32L151CCU6

1206RGB (single)

RF cable can be customized for other specifications

0201 package SLP0603 ESD electrostatic diode 5V one-way ESD

/* Name: Timer Control Digital Tube Dynamics

display

Description: 8 digital tubes are divided into two groups

State displays the year, month, day, hour, minute, and second, in this case

The bit display delay is implemented with a timer.

*/

#include

#include

#define uchar unsigned char

#define uint unsigned int

// segment code, the last digit is the segment number of "-"

Uchar code

DSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf};

//Data to be displayed: 09-12-25 and 23-59-58 (displayed in two groups)

Uchar code Table_of_Digits[][8]={{0,9,10,1,2,10,2,5},{2,3,10,5,9,10,5,8}};

Uchar i, j=0;

Uint t=0;

/ / Main program

Void main()

{

P3 = 0x80;

/ / bit code initial value

TMOD=0x00; //Counter T0 mode 0

TH0=(8192-4000)/32; //4ms timing

TL0=(8192-4000)%32;

IE=0x82;

TR0=1; //Start T0

While(1);

}

//T0 interrupt function controls the digital tube refresh display

Void DSY_Show() interrupt 1

{

TH0=(8192-4000)/32; //Restore the initial value

TL0=(8192-4000)%32;

P0=0xff; //output bit code and segment code

P0=DSY_CODE[Table_of_Digits[i][j]];

P3=_crol_(P3,1);

j=(j+1)%8; //The next byte index of the i-th row of the array

If(++t!=350) return; //Keep refreshed for a while

t=0;

i=(i+1)%2; //Display the year, month, and day when the array line i=0, and display the hour, minute, and second when i=1

}