Index: sources/device/DeviceModels.cpp
===================================================================
diff -u -r27cc308ff5113a9386899d3c8f8b29962a8498e1 -r23eda7b49841f242485b70d0a96f4bdde50f71bc
--- sources/device/DeviceModels.cpp	(.../DeviceModels.cpp)	(revision 27cc308ff5113a9386899d3c8f8b29962a8498e1)
+++ sources/device/DeviceModels.cpp	(.../DeviceModels.cpp)	(revision 23eda7b49841f242485b70d0a96f4bdde50f71bc)
@@ -18,7 +18,6 @@
 #include <QRegularExpressionValidator>
 
 // Project
-#include "DeviceError.h"
 
 using namespace Model;
 
@@ -119,3 +118,47 @@
 lOut:
     return _data.mAccepted;
 }
+
+/*!
+ * \brief   MDeviceBrightnessRequest::setBrightnessSysVal
+ * \details checks for the requested brightness percentage (in range and resolution)
+ * \return  returns device script error enum and is 0 on no error
+ */
+Device::DeviceError::Scripts_Error_Enum MDeviceBrightnessRequest::setBrightnessSysVal()
+{
+    // _data.mBrightnessPercent = 200;
+
+    // check range(min,max)
+    quint8 len = UI2HW.size();
+    if ( ! len ) {
+        LOG_DEBUG("Empty UI2HW map");
+        return Device::DeviceError::eDevice_Scripts_Error_Unknown;
+    }
+    quint8 min =  UI2HW.begin()     .key();
+    quint8 max = (UI2HW.end  () - 1).key();
+    if ( ! ( min <= _data.mBrightnessPercent && _data.mBrightnessPercent <= max ) ) {
+        return Device::DeviceError::eDevice_Scripts_Error_OutOfRange;
+    }
+
+    // check range(resolution)
+    if ( ! UI2HW.contains(_data.mBrightnessPercent) ) {
+        return Device::DeviceError::eDevice_Scripts_Error_Incorrect_Req;
+    }
+
+    _data.mBrightness_val = UI2HW[_data.mBrightnessPercent];
+    return Device::DeviceError::eDevice_OK;
+}
+
+/*!
+ * \brief   MDeviceBrightnessResponse::setBrightnessPercent
+ * \param   vSysVal - updated the response with returned brightness system value
+ * \return  returns device script error enum and is 0 on no error
+ */
+Device::DeviceError::Scripts_Error_Enum MDeviceBrightnessResponse::setBrightnessPercent(quint8 vSysVal) {
+    if ( ! HW2UI.contains( vSysVal ) ) {
+        return Device::DeviceError::eDevice_Scripts_Error_Incorrect_Rsp;
+    }
+
+    _data.mBrightnessPercent = HW2UI[ vSysVal ];
+    return Device::DeviceError::eDevice_OK;
+}