interrupt [USART_RXC] void usart_rx_isr(void)
{
    char data = UDR;

    if (!rx_done) {
        if (data == ':') fbp = 1;
            if (fbp) {
            rx_buffer[rx_wr_index++] = data;
            if (data =='/') {
                rx_done = 1;
                fbp = 0;
                rx_wr_index = 0;
                activeCommand(rx_buffer);
            }
            else if (rx_wr_index>=RX_BUFFER_SIZE) {
                     rx_wr_index = 0;
                     rx_buffer_overflow = 1;
                 }
        } else;
    } else rx_data_overrun = 1;

}

      void activeCommand(char c[])
{      
    USHORT a, b, d, e;
    a=rx_buffer[1];
    b=rx_buffer[2];
    d=rx_buffer[3];
    e=rx_buffer[4];
    fi=a-48;      //Так как преобразование идет в ASCII код приходится доводить значение
    se=b-48;
    th=d-48;
    fo=e-48;
          
    rx_done = 0;
}

interrupt [TIM1_OVF] void timer1_ovf_isr(void)
{  
    PORTB=0x00;
    TCNT1=57723;//57723
    if (S!=59){
        S++;
    } else {
        S=0;
        M++;
    }
    if (M==60){
        M=0;
        H++;
    }
    if (H==24){
        H=0;
    }
      
        SetCountCommand[1]=M/10+48;
        SetCountCommand[2]=M%10+48;
        SetCountCommand[3]=S/10+48;
        SetCountCommand[4]=S%10+48;
        
        puts(SetCountCommand);          
}

unsigned int x, y;
unsigned long z=65489;
x=z/10;
y=(z*0xCCCD)>>19;