/// <summary>
/// One wire device handler via DS2482-100
/// </summary>
/// <param name="ad0">AD0 addess bit</param>
/// <param name="ad1">AD1 addess bit</param>
/// <exception cref="Rinsen.IoT.OneWire.DS2482100DeviceNotFoundException">Thrown if no DS2482-100 device is detected</exception>
public OneWireDeviceHandler(bool ad0 = true, bool ad1 = true)
{
byte address = 0x18;
if (ad0)
{
address |= 1 << 0;
}
if (ad1)
{
address |= 1 << 1;
}
_ds2482_100 = new DS2482_100(new I2cDeviceLocator().GetI2cDevice(address));
try
{
_ds2482_100.OneWireReset();
}
catch (Exception e)
{
throw new DS2482100DeviceNotFoundException("No DS2482-100 detected, check that AD0 and AD1 is correct in ctor and that the physical connection to the DS2482-100 one wire bridge is correct.", e);
}
_oneWireDeviceTypes = new Dictionary <byte, Type>();
AddDeviceType <DS18S20>(0x10);
AddDeviceType <DS18B20>(0x28);
}
void ResetOneWireAndMatchDeviceRomAddress()
{
DS2482_100.OneWireReset();
DS2482_100.OneWireWriteByte(RomCommand.MATCH);
foreach (var item in OneWireAddress)
{
DS2482_100.OneWireWriteByte(item);
}
}
protected byte[] GetTemperatureScratchpad()
{
ResetOneWireAndMatchDeviceRomAddress();
DS2482_100.EnableStrongPullup();
StartTemperatureConversion();
ResetOneWireAndMatchDeviceRomAddress();
var scratchpad = ReadScratchpad();
return(scratchpad);
}
byte[] ReadScratchpad()
{
DS2482_100.OneWireWriteByte(FunctionCommand.READ_SCRATCHPAD);
var scratchpadData = new byte[9];
for (int i = 0; i < scratchpadData.Length; i++)
{
scratchpadData[i] = DS2482_100.OneWireReadByte();
}
return(scratchpadData);
}
private static DS2482_100 PrivateCreateDs2482_100(I2cDevice i2cDevice, bool disposeI2cDevice)
{
var ds2482_100 = new DS2482_100(i2cDevice, disposeI2cDevice);
try
{
ds2482_100.OneWireReset();
}
catch (Exception e)
{
throw new DS2482100DeviceNotFoundException("No DS2482-100 detected, check that AD0 and AD1 is correct in ctor and that the physical connection to the DS2482-100 one wire bridge is correct.", e);
}
return(ds2482_100);
}
void StartTemperatureConversion()
{
DS2482_100.OneWireWriteByte(FunctionCommand.CONVERT_T);
Task.Delay(TimeSpan.FromSeconds(1)).Wait();
}