Marysia

#include "reg1210.h"

#define TRUE 1
#define FALSE 0

unsigned char _20_MS_FLAG;
unsigned int _20_MS_COUNTER;
unsigned int _1_SEC_COUNTER;
unsigned int _SEC_COUNTER;
unsigned char _1_SEC_FLAG;
unsigned int _MASTER_SEC_COUNTER;

void TimerInt0() interrupt 1
{
    TH0 = 0xFC; //napelnia rejestr licznika do 1 ms
    TL0 = 0x18; //napelnia rejestr licznika do 1 ms
    _20_MS_COUNTER++;
    if (_20_MS_COUNTER == 20)
    {
        _20_MS_FLAG = TRUE;
        _1_SEC_COUNTER++;
        _20_MS_COUNTER = 0;
        if (_1_SEC_COUNTER == 50)
        {
            _SEC_COUNTER++;
            _1_SEC_COUNTER = 0;
            _1_SEC_FLAG = TRUE;
        }
    }
}

void rr(int *value)
{
    if (*value != 0x01)
    {
        int rotated_value;
        rotated_value = *value >> 1;
        *value = rotated_value;
    }
    else
    {
        *value = 0x80;
    }
}

void choinka()
{
    static int licznik = 0;
    switch (licznik)
    {
        case 0:
            P2=0x01;
        break;
        case 1:
            P2=0x02;
        break;
        case 2:
            P2=0x04;
        break;
        case 3:
            P2=0x08;
        break;
        case 4:
            P2=0x10;
        break;
        case 5:
            P2=0x20;
        break;
        case 6:
            P2=0x40;
        break;
        case 7:
            P2=0x80;
        break;
    }
    licznik++;
    if(licznik==8)
    {
        licznik=0;
    }

}

void main()
{

    int A;
    _20_MS_FLAG = FALSE;
    _20_MS_COUNTER = 0;
    _1_SEC_FLAG = FALSE;
    _1_SEC_COUNTER = 0;
    _SEC_COUNTER = 0;
    _MASTER_SEC_COUNTER = 0;

    ET0 = 1;
    TMOD = 0x01;
    TR0 = 1;
    EA = 1;
    TH0 = 0xFC;
    TL0 = 0x18;

    A = 0x80; //zapalona wylacznie skrajna dioda
    P3 = A;

    //PETLA GLÓWNA PROGRAMU
    while (1)
    {
        if (_SEC_COUNTER < 15)
        {
            if (_1_SEC_FLAG == TRUE) //wywolanie co 1 sekunde
            {
                _1_SEC_FLAG = FALSE; //na samym poczatku zerowanie flagi
                rr(&A);
                P3 = A;
                                choinka();
            }
        }
        else
        {
        }
    }
}