ultrasonic should work now...

modules/catkin_ws/src/car/CMakeLists.txt

@@ -122,6 +122,7 @@ add_library(ultrasonic ${USS_SOURCE_FILES})
 add_dependencies(ultrasonic ${catkin_EXPORTED_TARGETS} ${PROJECT_NAME}_generate_messages_cpp)
 target_link_libraries(ultrasonic
     ${catkin_LIBRARIES}
+    libwiringPi.so
 )
 
 add_library(camera src/camera/Camera.cpp)

modules/catkin_ws/src/car/src/ultrasonic/USS_SRF02.cpp

@@ -28,6 +28,7 @@ USS_SRF02::USS_SRF02(int devId)
 {
     this->fd = -1; //no file opened yet
     this->devId = devId;
+    setup();
 }
 
 int USS_SRF02::getDistance()