public static void Main()
{
Console.WriteLine("");
Console.WriteLine("** nanoFramework OneWire ESP32 DEV KITV1 Sample! **");
OneWireController oneWire = new OneWireController();
DS18B20 ds18b20 = new DS18B20(oneWire, /* The 1-wire bus*/
null, /*Let this driver find out a DS18B20 on the bus*/
true, /* Multidrop, network*/
3 /* 3 decimal places is enough for us while reading temperature changes*/
);
string devAddrStr = "";//store the device address as string...
ds18b20.SetSearchMode = DS18B20.NORMAL;
if (ds18b20.Initialize()) //Initialize sensors | search for 18B20 devices
{
Console.WriteLine("");
Console.WriteLine("Devices found = " + ds18b20.Found);
Console.WriteLine("");
for (int i = 0; i < ds18b20.Found; i++)
{
ds18b20.Address = ds18b20.AddressNet[i];
foreach (var addrByte in ds18b20.AddressNet[i])
{
devAddrStr += addrByte.ToString("X2");
}
Console.WriteLine("18b20-" + i.ToString("X2") + " " + devAddrStr);
devAddrStr = "";
CheckPowerMode();
setAlarmSetPoints(); // Set same setpoint for selected device
}
Console.WriteLine("");
loopReadAll();
alarmSearch();
}
else
{
notFound();
}
void loopReadAll()
{
int loopRead = 10;
while (loopRead > 0)
{
Console.WriteLine("LoopRead " + loopRead);
ds18b20.PrepareToRead(); // Update temp. value in all devices
for (int index = 0; index < ds18b20.Found; index++)
{
//Select the device
ds18b20.Address = ds18b20.AddressNet[index];
devAddrStr = "";
foreach (var addrByte in ds18b20.AddressNet[index])
{
devAddrStr += addrByte.ToString("X2");
}
//Read Temperature on selected device
ds18b20.Read();
Console.WriteLine("DS18B20[" + devAddrStr + "] Sensor reading in One-Shot-mode; T = " + ds18b20.TemperatureInCelcius.ToString("f2") + " C"); //"f2" two decimal point format.
}
Console.WriteLine("");
loopRead--;
}
}
// Set alarm setpoint for selected device
void setAlarmSetPoints()
{
//ds18b20.ConfigurationRead(false);
//Console.WriteLine("Alarm Setpoints before:");
//Console.WriteLine("Hi alarm = " + ds18b20.TempHiAlarm + " C");
//Console.WriteLine("Lo alarm = " + ds18b20.TempLoAlarm + " C");
//Console.WriteLine("");
ds18b20.TempHiAlarm = 30;
ds18b20.TempLoAlarm = 25;
ds18b20.ConfigurationWrite(false); //Write configuration on ScratchPad,
//If true, save it on EEPROM too.
ds18b20.ConfigurationRead(true);
Console.WriteLine("Alarm Setpoints-RecallE2:");
Console.WriteLine("Hi alarm = " + ds18b20.TempHiAlarm + " C");
Console.WriteLine("Lo alarm = " + ds18b20.TempLoAlarm + " C");
Console.WriteLine("");
}
void alarmSearch()
{
int loopRead = 40;
ds18b20.SetSearchMode = DS18B20.SEARCH_ALARM;
while (loopRead > 0)
{
Console.WriteLine("LoopRead " + loopRead);
if (ds18b20.SearchForAlarmCondition())
{
for (int index = 0; index < ds18b20.Found; index++)
{
//Select the device
ds18b20.Address = ds18b20.AddressNet[index];
//Read Temperature on selected device
ds18b20.Read();
devAddrStr = "";
foreach (var addrByte in ds18b20.AddressNet[index])
{
devAddrStr += addrByte.ToString("X2");
}
Console.WriteLine("DS18B20[" + devAddrStr + "] Sensor reading in One-Shot-mode; T = " + ds18b20.TemperatureInCelcius.ToString("f2") + " C");
ds18b20.ConfigurationRead(false); //Read alarm setpoint.
Console.WriteLine("Alarm Setpoints:");
Console.WriteLine("Hi alarm = " + ds18b20.TempHiAlarm + " C");
Console.WriteLine("Lo alarm = " + ds18b20.TempLoAlarm + " C");
Console.WriteLine("");
}
}
else
{
Console.WriteLine("***** No devices in alarm ****");
}
loopRead--;
}
Console.WriteLine("");
}
void notFound()
{
Console.WriteLine("*****************");
Console.WriteLine("No devices found.");
Console.WriteLine("*****************");
};
void CheckPowerMode()
{
if (ds18b20.IsParasitePowered())
{
Console.WriteLine("Parasite powered");
}
else
{
Console.WriteLine("External powered");
}
}
#region Other Examples
//OneWireController oneWire = new OneWireController();
//DS18B20 ds18b20 = new DS18B20(oneWire,/* The 1-wire bus*/
// null, /*Let this driver find out a DS18B20 on the bus*/
// false, /* single drop, no network*/
// 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 decimal 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.ConfigurationRead();
// Console.WriteLine("Resolution = " + ds18b20.Resolution);
// Console.WriteLine("Temperute Hi alarm =" + ds18b20.TempHiAlarm + " C");
// Console.WriteLine("Temperute Lo alarm =" + ds18b20.TempLoAlarm + " C");
// ds18b20.Resolution = -4;
// ds18b20.TempHiAlarm = -10;
// ds18b20.TempLoAlarm = 10;
// ds18b20.ConfigurationWrite();
// ds18b20.PrepareToRead();
// ds18b20.ConfigurationRead();
// Console.WriteLine("New Resolution = " + ds18b20.Resolution);
// Console.WriteLine("New Temperute Hi alarm = " + ds18b20.TempHiAlarm + " C");
// Console.WriteLine("New Temperute Lo alarm = " + ds18b20.TempLoAlarm + " C");
// int loopRead = 20;
// while (loopRead > 0)
// {
// ds18b20.PrepareToRead();
// ds18b20.Read();
// Console.WriteLine("DS18B20[" + devAddrStr + "] Sensor reading in One-Shot-mode; T=" + ds18b20.TemperatureInCelcius.ToString() + " C"); //"f2" two decimal point format.
// Thread.Sleep(4000);
// loopRead--;
// }
//}
///*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();
#endregion
}
