Added doxygen docs, Fixed _read to be validated
Added doxygen docs, Fixed _read to be validated

jdkoftinoff/jdksavdecc-mcu,jdkoftinoff/jdksavdecc-c,jdkoftinoff/jdksavdecc-mcu,arvidtp/jdksavdecc-c,arvidtp/jdksavdecc-c,jdkoftinoff/jdksavdecc-mcu,arvidtp/jdksavdecc-c,jdkoftinoff/jdksavdecc-c,arvidtp/jdksavdecc-c,jdkoftinoff/jdksavdecc-mcu,jdkoftinoff/jdksavdecc-c,jdkoftinoff/jdksavdecc-c