//void IDisposable.Dispose() {
// ds.Dispose();
//}
protected override void SensorCleanup()
{
ds.Dispose();
}
/// <summary>
/// The run method
/// </summary>
public void RunSample()
{
OneWireController oneWire = new OneWireController();
DS18B20 ds18b20 = new DS18B20(oneWire, /* The 1-wire bus*/
null, /*Let this driver find out a DS18B20 on the bus*/
3 /*3 decimal places is enough for us while reading temperature changes*/);
/*
* NOTE: Limiting to the decimal places will not work when you do a "ToString" on floats.
* The limit to decimal places is only for comparison. For exmaple, if last measured temperature value
* was 25.3343567 and the next value is 25.3343667, then the difference between the two is about 0.00001.
* If we limit to 3 decimla places, then the values are read as 25.334 and 25.334, resulting in a difference
* of zero. This is used to compute if sensors changed or not...more the number of decimal places, higher
* is the change event possibility (because even a very small change will be registered)
*/
int loopCount = 3; //used later to limit test duration
string devAddrStr = ""; //store the device address as string...
/*********************************************************************************************************
* This driver supports, one-shot , poll mode (meaning,you check the sensor for changes
* in temperature values) and event mode (meaning, the driver will alert you when
* temperature changes)
*********************************************************************************************************/
//One-Shot-mode example...
ds18b20.Initialize(); //Initialize sensor
/*After device gets initialized and if initialization is successful, the class DS18B20 should have an address*/
if (ds18b20.Address != null && ds18b20.Address.Length == 8 && ds18b20.Address[0] == DS18B20.FAMILY_CODE)
{
//Initialization successful...let's try to read the address
/*
* Since this class was initialized without an address, the Initialize() method will search for valid
* devices on the bus, and select the first device of type DS18B20 on the bus. If you have multiple devices,
* You can use the OneWireController class's "Find" methods to first search for devices, and then initialize
* the class with an address.
*/
foreach (var addrByte in ds18b20.Address)
{
devAddrStr += addrByte.ToString("X2");
}
ds18b20.PrepareToRead();
ds18b20.Read();
Console.WriteLine("DS18B20[" + devAddrStr + "] Sensor reading in One-Shot-mode; T=" + ds18b20.TemperatureInCelcius.ToString() + " C");
}
/*Polled example*/
loopCount = 3;
ds18b20.Reset();
ds18b20.Initialize();//after this device should have valid address...see above on how to check
while (loopCount > 0)
{
if (ds18b20.HasSensorValueChanged())
{
//no need to read again (like HTU21D)
Console.WriteLine("DS18B20[" + devAddrStr + "] in Poll-mode;T=" + ds18b20.TemperatureInCelcius.ToString());
}
loopCount--;
}
/*Event mode...*/
loopCount = 3;
ds18b20.Reset();
ds18b20.Initialize(); //again, if initialization is successful, object will have valid address (see above)
if (ds18b20.CanTrackChanges())
{
ds18b20.SensorValueChanged += () => {
//no need to read again (like HTU21D)
Console.WriteLine("DS18B20 (" + devAddrStr + ") in Event-mode;T=" + ds18b20.TemperatureInCelcius.ToString());
};
ds18b20.BeginTrackChanges(2000 /*track changes every 2 seconds*/);
while (loopCount > 0)
{
Thread.Sleep(3000);//Wait for a change...
loopCount--;
}
ds18b20.EndTrackChanges();
}
ds18b20.Dispose();
}
