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#define ONE_WIRE_PIN   PIN_A3 // pro pristup k cidlu jsem zvolil

void onewire_reset()
{
output_low(ONE_WIRE_PIN);
delay_us(240);
output_float(ONE_WIRE_PIN);
delay_us(150);
output_float(ONE_WIRE_PIN);
}

void onewire_write(int data)
{
int count;

for (count=0; count<8; ++count)
{
output_low(ONE_WIRE_PIN);
delay_us( 2 );
output_bit(ONE_WIRE_PIN, shift_right(&data,1,1));

   delay_us( 40 );
   output_float(ONE_WIRE_PIN);
   delay_us( 2 );
}
}

int onewire_read()
{
int count, data;

for (count=0; count<8; ++count)
{
output_low(ONE_WIRE_PIN);
delay_us( 2 );
output_float(ONE_WIRE_PIN);
delay_us( 8 );
shift_right(&data,1,input(ONE_WIRE_PIN));
    delay_us(5);
}

return( data );
}