Added connected and last update value to camera client in af3pihal.

Signed-off-by: Florian Hoelzl <hoelzl@fortiss.org>

org.fortiss.af3.platform.raspberry/code-gen-hal/inc/af3pihal/camera_client.h

@@ -16,10 +16,12 @@
 #include "debugprint.h"
 
 #include <stdbool.h>
+#include <stdint.h>
 
 /** Initialize the connection to the camera server. */
 void camera_client_initialize(const char *hostname, const char *port);
-
+/** Returns whether the client is connected to the camera. */
+bool camera_client_is_connected();
 /** Returns the left distance. */
 float camera_client_get_distance_left();
 /** Returns the right distance. */
@@ -30,5 +32,7 @@ float camera_client_get_yaw_angle();
 bool camera_client_get_detection_state_left();
 /** Returns the detection state left. */
 bool camera_client_get_detection_state_right();
+/** Returns the number of milliseconds since the last camera data was received. */
+uint64_t camera_client_get_ms_since_last_update();
 
 #endif /* INC_CAMERA_CLIENT_H_ */