[CTRLRFC-1594] Apply memorized dynamic attributes at init

See CTRLRFC-1594

src/SingleShotAO.cpp

@@ -489,32 +489,25 @@ void SingleShotAO::init_device()
 		yat::OSStream oss;
 		oss << l_cpt;
 
-		// speed value
-		try
-	  	{
-		  	std::string attr_name = kSPEED + oss.str();
-      		std::string name = "__" + attr_name;
-
-			double l_val = yat4tango::PropertyHelper::get_memorized_attribute<double>(this, name);
-			m_manager->set_speed(l_cpt, l_val);
-	  	}
-			catch (...) {
-			// nothing to do
-		}
-
-		// initial value
-		try
+		// Helper function to get and set memorized attributes
+		auto applyMemorizedAttr = [&](const std::string& attrPrefix, 
+			void (SingleShotAOManager::*setter)(yat::uint16, double))
 		{
-			std::string attr_name = kINITIAL + oss.str();
-			std::string name = "__" + attr_name;
-
-			double l_val = yat4tango::PropertyHelper::get_memorized_attribute<double>(this,name);
-			m_manager->set_initial(l_cpt, l_val);
-        }
-	    catch (...)
-		{
-			//nothing to do
-		}
+			try {
+				std::string attrName = attrPrefix + oss.str();
+				double val = yat4tango::PropertyHelper::get_memorized_attribute<double>(this, attrName);
+				(m_manager->*setter)(l_cpt, val);
+			}
+			catch (...) {
+				// nothing to do
+			}
+		};
+
+		// Get and set memorized values for speed, initial and channel
+		applyMemorizedAttr(kSPEED, &SingleShotAOManager::set_speed);
+		applyMemorizedAttr(kINITIAL, &SingleShotAOManager::set_initial); 
+		applyMemorizedAttr(kCHANNEL, &SingleShotAOManager::set_channel);
+		// TODO: add a property to call write_channel instead of set_channel (false by default)
     }
 
 	//- GO for task
@@ -850,6 +843,8 @@ void SingleShotAO::write_channel(yat4tango::DynamicAttributeWriteCallbackData &
 			"could not write channel [unknown error]",
 			"SingleShotAO::write_channel");
 	}
+
+	yat4tango::PropertyHelper::set_memorized_attribute(this, l_attr_name, l_val);
 }