tests done OK !

src/NovelecProtocol.cpp

@@ -163,7 +163,7 @@ std::string NovelecProtocol::get_value (void)
 {
 std::stringstream cmd_to_send;
 std::string tmp("no data");
-std::string value("no data");
+std::string value("-1");
 short cmd_num = 13;				//- default value for DEBUG !!!
 
 	//- first get mode
@@ -179,6 +179,7 @@ short cmd_num = 13;				//- default value for DEBUG !!!
 			std::cout << "\t\t***WARN : Current mode : \"" << get_mode() << "\" has no value available." << std::endl;
 
 	cmd_to_send << _devAdd << " READ " << cmd_num << END_OF_LINE << std::endl;
+	tmp = _communication_link->write_read(cmd_to_send.str());
 	//- check only the command response
 	value = check_and_extract_data(tmp, cmd_num);