logger: publish initial logger_status orb message

msg/CMakeLists.txt

@@ -76,6 +76,7 @@ set(msg_files
 	landing_target_pose.msg
 	led_control.msg
 	log_message.msg
+	logger_status.msg
 	manual_control_setpoint.msg
 	mavlink_log.msg
 	mission.msg

msg/logger_status.msg

@@ -0,0 +1,20 @@
+uint64 timestamp               # time since system start (microseconds)
+
+uint8 LOGGER_TYPE_FULL    = 0  # Normal, full size log
+uint8 LOGGER_TYPE_MISSION = 1  # reduced mission log (e.g. for geotagging)
+uint8 type
+
+uint8 BACKEND_FILE    = 1
+uint8 BACKEND_MAVLINK = 2
+uint8 BACKEND_ALL     = 3
+uint8 backend
+
+float32 total_written_kb       # total written to log in kiloBytes
+float32 write_rate_kb_s        # write rate in kiloBytes/s
+
+uint32 dropouts                # number of failed buffer writes due to buffer overflow
+
+uint32 buffer_used_bytes       # current buffer fill in Bytes
+uint32 buffer_size_bytes       # total buffer size in Bytes
+
+uint8 num_messages

msg/tools/uorb_rtps_message_ids.yaml

@@ -279,6 +279,8 @@ rtps:
     id: 124
   - msg: vehicle_angular_acceleration
     id: 125
+  - msg: logger_status
+    id: 126
   ########## multi topics: begin ##########
   - msg: actuator_controls_0
     id: 150