diff --git a/onewire/README.md b/onewire/README.md
index 52374a9d..c022e19d 100644
--- a/onewire/README.md
+++ b/onewire/README.md
@@ -1,3 +1,39 @@
 # One wire
 
 This plugin allows to add one wire devices through the one wire file system.
+
+
+## One wire interface device
+
+This device initializes OWFS, during the device setup you can set OWFS init arguments.
+Default arguments are "--i2c=ALL:ALL" to scan for one-wire devices on all I2C interfaces.
+
+You can simulate one-wire device with following init argument: "--fake=10,22,28,05"
+
+More about init arguments here: https://www.owfs.org
+
+## Supported one-wire devices
+
+* Family Code 10 - Temperature Sensors
+..* DS18S20
+..* DS1820
+..* DS18S20-PAR
+..* DS1920
+* Family Code 22 - Temperature Sensors
+..* DS1822
+..* DS1822-PAR
+* Family Code 28 - Temperature Sensors
+..* DS18B20
+..* DS18B20-PAR
+..* DS18B20X
+* Family Code 3B - Temperature Sensors
+..* DS1825
+* Family Code 05 - Single channel switch
+..* DS2405
+* Family Code 12 - Dual channel switch
+..* DS2406
+..* DS2407
+* Family Code 3A - Dual channel switch
+..* DS2413
+* Family Code 29 - Eight channel switch
+..* DS2408
diff --git a/onewire/devicepluginonewire.cpp b/onewire/devicepluginonewire.cpp
index 27cc2faf..466fad16 100644
--- a/onewire/devicepluginonewire.cpp
+++ b/onewire/devicepluginonewire.cpp
@@ -33,10 +33,6 @@ DevicePluginOneWire::DevicePluginOneWire()
 {
 }
 
-void DevicePluginOneWire::init()
-{
-}
-
 Device::DeviceError DevicePluginOneWire::discoverDevices(const DeviceClassId &deviceClassId, const ParamList &params)
 {
     Q_UNUSED(params);
@@ -46,6 +42,11 @@ Device::DeviceError DevicePluginOneWire::discoverDevices(const DeviceClassId &de
             deviceClassId == dualChannelSwitchDeviceClassId   ||
             deviceClassId == eightChannelSwitchDeviceClassId) {
 
+        if (myDevices().filterByDeviceClassId(oneWireInterfaceDeviceClassId).isEmpty()) {
+            //No one wire interface intitialized
+            return Device::DeviceErrorHardwareNotAvailable;
+        }
+
         foreach(Device *parentDevice, myDevices().filterByDeviceClassId(oneWireInterfaceDeviceClassId)) {
             if (parentDevice->stateValue(oneWireInterfaceAutoAddStateTypeId).toBool()) {
                 //devices cannot be discovered since auto mode is enabled
@@ -277,6 +278,7 @@ void DevicePluginOneWire::onOneWireDevicesDiscovered(QList<OneWire::OneWireDevic
             switch (oneWireDevice.family) {
             //https://github.com/owfs/owfs-doc/wiki/1Wire-Device-List
             case 0x10:  //DS18S20
+            case 0x22:  //DS1822
             case 0x28:  //DS18B20
             case 0x3b:  {//DS1825, MAX31826, MAX31850
                 DeviceDescriptor descriptor(temperatureSensorDeviceClassId, oneWireDevice.type, "One wire temperature sensor", parentDevice->id());
@@ -347,22 +349,22 @@ void DevicePluginOneWire::onOneWireDevicesDiscovered(QList<OneWire::OneWireDevic
         }
         if (autoDiscoverEnabled) {
             if (!temperatureDeviceDescriptors.isEmpty())
-                emit autoDevicesAppeared(temperatureSensorDeviceClassId,  temperatureDeviceDescriptors);
+                emit autoDevicesAppeared(temperatureSensorDeviceClassId, temperatureDeviceDescriptors);
             if (!singleChannelSwitchDeviceDescriptors.isEmpty())
-                emit autoDevicesAppeared(singleChannelSwitchDeviceClassId,  singleChannelSwitchDeviceDescriptors);
+                emit autoDevicesAppeared(singleChannelSwitchDeviceClassId, singleChannelSwitchDeviceDescriptors);
             if (!dualChannelSwitchDeviceDescriptors.isEmpty())
-                emit autoDevicesAppeared(dualChannelSwitchDeviceClassId,  dualChannelSwitchDeviceDescriptors);
+                emit autoDevicesAppeared(dualChannelSwitchDeviceClassId, dualChannelSwitchDeviceDescriptors);
             if (!eightChannelSwitchDeviceDescriptors.isEmpty())
-                emit autoDevicesAppeared(eightChannelSwitchDeviceClassId,  eightChannelSwitchDeviceDescriptors);
+                emit autoDevicesAppeared(eightChannelSwitchDeviceClassId, eightChannelSwitchDeviceDescriptors);
         } else {
             if (!temperatureDeviceDescriptors.isEmpty())
-                emit devicesDiscovered(temperatureSensorDeviceClassId,  temperatureDeviceDescriptors);
+                emit devicesDiscovered(temperatureSensorDeviceClassId, temperatureDeviceDescriptors);
             if (!singleChannelSwitchDeviceDescriptors.isEmpty())
-                emit devicesDiscovered(singleChannelSwitchDeviceClassId,  singleChannelSwitchDeviceDescriptors);
+                emit devicesDiscovered(singleChannelSwitchDeviceClassId, singleChannelSwitchDeviceDescriptors);
             if (!dualChannelSwitchDeviceDescriptors.isEmpty())
-                emit devicesDiscovered(dualChannelSwitchDeviceClassId,  dualChannelSwitchDeviceDescriptors);
+                emit devicesDiscovered(dualChannelSwitchDeviceClassId, dualChannelSwitchDeviceDescriptors);
             if (!eightChannelSwitchDeviceDescriptors.isEmpty())
-                emit devicesDiscovered(eightChannelSwitchDeviceClassId,  eightChannelSwitchDeviceDescriptors);
+                emit devicesDiscovered(eightChannelSwitchDeviceClassId, eightChannelSwitchDeviceDescriptors);
         }
         break;
     }
diff --git a/onewire/devicepluginonewire.h b/onewire/devicepluginonewire.h
index 6346e556..bd37aeb6 100644
--- a/onewire/devicepluginonewire.h
+++ b/onewire/devicepluginonewire.h
@@ -37,7 +37,6 @@ class DevicePluginOneWire : public DevicePlugin
 
 public:
     explicit DevicePluginOneWire();
-    void init() override;
 
     Device::DeviceError discoverDevices(const DeviceClassId &deviceClassId, const ParamList &params) override;
     Device::DeviceSetupStatus setupDevice(Device *device) override;