public double GetValue()
{
try
{
var distance = 0.0;
using (var connection = new HcSr04Connection(
driver.Out(TRIGGERPIN.ToProcessor()),
driver.In(ECHOPIN.ToProcessor())))
{
distance = connection.GetDistance().Centimeters;
return distance;
}
}
catch (TimeoutException tex)
{
throw new TimeoutException("Timeout", tex);
}
}
private static void Main(string[] args)
{
Console.CursorVisible = false;
const ConnectorPin triggerPin = ConnectorPin.P1Pin21;
const ConnectorPin echoPin = ConnectorPin.P1Pin23;
Console.WriteLine("HC-SR04 Sample: measure distance");
Console.WriteLine();
Console.WriteLine("\tTrigger: {0}", triggerPin);
Console.WriteLine("\tEcho: {0}", echoPin);
Console.WriteLine();
var interval = GetInterval(args);
var driver = GpioConnectionSettings.DefaultDriver;
using (var connection = new HcSr04Connection(
driver.Out(triggerPin.ToProcessor()),
driver.In(echoPin.ToProcessor())))
{
while (!Console.KeyAvailable)
{
try
{
var distance = connection.GetDistance();
Console.WriteLine(string.Format(CultureInfo.InvariantCulture, "{0:0.0}cm", distance * 100).PadRight(16));
Console.CursorTop--;
}
catch (TimeoutException e)
{
Console.WriteLine("(Timeout): " + e.Message);
}
Timer.Sleep(interval);
}
}
Console.CursorVisible = true;
}