51 single chip microcomputer displays time and date

#include

#include

#include<DS1302.h>

sbit p10=P1^0;

bit flag=0; //Adjust control flag

bit flagh=1; //Time and date switch mark

uchar temp[7]; //Time before adjustment

uchar curtime1[8],curtime2[8]; //Adjusted time display mode

uchar tab1[]={30,40,11,31,8,2,14}; //DS1302 initialization time

uchar xingqi; //Read the day of the week

uchar code tab2[]={0xff,0xf9,0xA4,0xb0,0x99,0x92,0x82,0xf8}; //Common cathode LED to display the day of the week

 uchar tab4[11]={0x7e,0x30,0x6d,0x79,0x33,0x5b,0x5f,0x70,0x7f,0x7b,0x01}; //LED digital tube display code for displaying time and date

  void delay2(void)

{

int i,j;

for(i=0; i<=10; i++);

for(j=0; j<=2; j++);

}

void  main(void)

   {   

    fly i,temp0[8];

    P3=0xff;

Init_7219(); //Initialize MAX7219

set_rtc(tab1); //Initialize DS1302

  //  init_DS1302();

    temp0[2]=10; //Display the "-" symbol at a fixed position

temp0[5]=10;

 while(1)

 {  

     get_1302(); //Read the time and save it in temp

if(p10==0) //Judge whether the button is released or pressed

 delay2();

     if( p10==0 )

       {

   flagh=0;  

}

   if((flagh==1)) //Time and date display switch flag

   {

    temp0[0]=temp[0]/16;

    temp0[1]=temp[0]%16;

    temp0[3]=temp[1]/16;

    temp0[4]=temp[1]%16;

    temp0[6]=temp[2]/16;

    temp0[7]=temp[2]%16;

   }

   else

   { flagh=1; //Normal display of time, press the p10 key to display the date

temp0[0]=temp[3]/16;

     temp0[1]=temp[3]%16;

     temp0[3]=temp[4]/16;

     temp0[4]=temp[4]%16;

     temp0[6]=temp[6]/16;

     temp0[7]=temp[6]%16;    

   }

  for(i=0;i<8;i++)

  {  

   Write_7219(i+1,tab4[temp0[i]]); 

  }

  }

 }

#include

 #include

/*-------------------------------------------------

This function is to write data to MAX7219 (operation word or display data)

address is the address of the internal register;

dat is the operation word or displayed data

-------------------------------------------------*/

void Write_7219(uchar address,uchar dat)

{ fly i;

ACC=address;

    LOAD=0; //Pull down the chip select line to select the device

    //sending address

    for (i=0;i<8;i++) // shift loop 8 times              

    {   

      CLK=0; //Clear clock bus

        DIN=A7; //Each time, take the highest bit and send it to max7219  

    CLK=1; //Clock rising edge, send address   

        address<<=1; //Shift left one bit      

    }

//send data

ACC=that;

    for (i=0;i<8;i++)               

    {   

        CLK=0;

        DIN=A7;  

        CLK=1; //Clock rising edge, send data

  dat<<=1; 

    }

    LOAD=1; //Sending is completed, rising edge latches data                       

}

/*-------------------------------------------------

This is the initialization program of MAX7219

DECODE_MODE 0x09 //Decoding control register

INTENSITY 0x0A //Brightness control register

SCAN_LIMIT 0x0B //Scan limit register

SHUT_DOWN 0x0C //Shutdown mode register

DISPLAY_TEST 0x0F //Test control register

-------------------------------------------------*/

void Init_7219(void)                 

{ 

    Write_7219(SHUT_DOWN,0x01); //Start normal working mode (0xX1)

    Write_7219(DISPLAY_TEST,0x00); //Select working mode (0xX0)

    Write_7219(DECODE_MODE,0x00); //Select non-decoding mode

    Write_7219(SCAN_LIMIT,0x07); //Use all 8 LEDs

    Write_7219(INTENSITY,0x04); //Set the initial brightness      

}

 /*

void mul_write_7219( uchar *point) //write multiple data

{

 flying i;

 for (i=0;i<8;i++)

 {

  Write_7219(i+1,*point);

  point++;   

  }

  }

*/

void set_rtc(uchar tab[])

{ uchar ucaddr=0x80; //Write the initial address of the initial time to the time register

flying a,i;

write_1302(0x8e,0x00); //, write protection is removed during initialization

for(i=0;i<7;i++)

{ a=tab[i]/10; //Convert decimal number to BCD code

 tab[i]=tab[i]%10;

 tab[i]=tab[i]+a*16;

 write_1302(ucaddr,tab[i]);

 ucaddr+=2;

}

// write_1302(0x8e,0x80); //Add write protection

}

/*-------------------------------------------------

This function reads out the data in the 1302 time register in multiple bytes and puts them into the curtime array.

{0x81,0x83,0x85,0x87,0x89,0x8b,0x8d};   

The initial address to read data from the time register

  Put the read data into the array curtime

-------------------------------------------------*/

void get_1302() //Read multiple bytes of data from the 1302 time register and put them into the curtime array

{ uchar ucaddr=0x81; //The initial address to read data from the time register

fly i=0;

//for(i=0;i<7;i++)

while(i<7)

{

temp[i]=read_1302(ucaddr);

ucaddr+=2;

i++;

}

}

void init_DS1302(void) // Initialize separately, no loop statement

{

write_1302(0x80,0x30);  

write_1302(0x82,0x25);  

write_1302(0x84,0x01);

write_1302(0x86,0x25); 

write_1302(0x88,0x02); 

write_1302(0x8A,0x04); 

write_1302(0x8c,0x14);

write_1302(0x8e,0x0); //Remove write protection

}