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You are here: Home / Topics / help me

help me

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Miscellaneous › Others › help me

  • This topic has 0 replies, 1 voice, and was last updated 10 years, 2 months ago by muhammad.
Viewing 1 post (of 1 total)
  • Author
    Posts
  • March 5, 2015 at 4:40 pm #3523
    muhammad
    Participant

    can check this c programming

    i try use mat lab and proteus but cant run


    // Program to make a bidirectional visitor counter using IR sensor

    #include <reg51.h>
    #define msec 1
    unsigned int num=0;
    sbit dig_ctrl_4=P1^3; //declare the control pins of seven segments
    sbit dig_ctrl_3=P1^2;
    sbit dig_ctrl_2=P1^1;
    sbit dig_ctrl_1=P1^0;
    unsigned int digi_val[10]={0x40,0xF9,0x24,0x30,0x19,0x12,0x02,0xF8,0x00,0x10};
    unsigned int dig_1,dig_2,dig_3,dig_4,test=0;
    unsigned char dig_disp=0;
    sbit up=P3^5; //up pin to make counter count up
    sbit down=P3^6; //down pin to make counter count down

    void init() // to initialize the output pins and Timer0
    {
    up=down=1;
    dig_ctrl_4 = 0;
    dig_ctrl_3 = 0;
    dig_ctrl_2 = 0;
    dig_ctrl_1 = 0;
    TMOD=0x01;
    TL0=0xf6;
    TH0=0xFf;
    IE=0x82;
    TR0=1;
    }

    void delay() //To provide a small time delay
    {
    TMOD=0x01;
    TL0=0x36;
    TH0=0xF6;
    TR0=1;
    while(TF0==0);
    TR0=0;
    TF0=0;
    }

    void display() interrupt 1 // Function to display the digits on seven segment. For more details refer seven segment multiplexing.
    {
    TL0=0x36;
    TH0=0xf6;
    P2=0xFF;
    dig_ctrl_1 = dig_ctrl_3 = dig_ctrl_2 = dig_ctrl_4 = 0;
    dig_disp++;
    dig_disp=dig_disp%4;
    switch(dig_disp)
    {

    case 0:
    P2= digi_val[dig_1];
    dig_ctrl_1 = 1;
    break;

    case 1:
    P2= digi_val[dig_2];
    dig_ctrl_2 = 1;
    break;

    case 2:
    P2= digi_val[dig_3];
    dig_ctrl_3 = 1;
    break;

    case 3:
    P2= digi_val[dig_4];
    dig_ctrl_4 = 1;
    break;
    }
    }

    void main()
    {
    init();
    while(1)
    {
    if(up==0&&down==1) //check if up pin is pressed
    {
    test++;
    num=test;
    dig_4=num%10;
    num=num/10;
    dig_3=num%10;
    num=num/10;
    dig_2=num%10;
    dig_1=num/10;
    if(test==9999)
    test=0;
    }
    if(up==1&&down==0) //check if down pin is pressed
    {
    test--;
    num=test;
    dig_4=num%10;
    num=num/10;
    dig_3=num%10;
    num=num/10;
    dig_2=num%10;
    dig_1=num/10;
    if(test==0)
    test=9999;
    }
    }
    }

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