/*while(1)
   	{
		if (doBeep)
		{
			unsigned int i = period / halfMinuteInterval;
			while (i > 0)
			{
				GP4 = 1;
				_delay(100000);
				GP4 = 0;
				if (i > 1)
				{
					_delay(200000);
				}
				else 
				{
					doBeep = 0;
				}
				i --;
			}
		}
   	}*/