AP_DDS: Added takeoff DDS service

libraries/AP_DDS/AP_DDS_Client.cpp

@@ -29,6 +29,9 @@
 #if AP_DDS_ARM_CHECK_SERVER_ENABLED
 #include "std_srvs/srv/Trigger.h"
 #endif // AP_DDS_ARM_CHECK_SERVER_ENABLED
+#if AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED
+#include "ardupilot_msgs/srv/Takeoff.h"
+#endif // AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED
 
 #if AP_EXTERNAL_CONTROL_ENABLED
 #include "AP_DDS_ExternalControl.h"
@@ -915,6 +918,35 @@ void AP_DDS_Client::on_request(uxrSession* uxr_session, uxrObjectId object_id, u
         break;
     }
 #endif // AP_DDS_MODE_SWITCH_SERVER_ENABLED
+#if AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED
+    case services[to_underlying(ServiceIndex::TAKEOFF)].rep_id: {
+        ardupilot_msgs_srv_Takeoff_Request takeoff_request;
+        ardupilot_msgs_srv_Takeoff_Response takeoff_response;
+        const bool deserialize_success = ardupilot_msgs_srv_Takeoff_Request_deserialize_topic(ub, &takeoff_request);
+        if (deserialize_success == false) {
+            break;
+        }
+        takeoff_response.status = AP::vehicle()->start_takeoff(takeoff_request.alt);
+
+        const uxrObjectId replier_id = {
+            .id = services[to_underlying(ServiceIndex::TAKEOFF)].rep_id,
+            .type = UXR_REPLIER_ID
+        };
+
+        uint8_t reply_buffer[8] {};
+        ucdrBuffer reply_ub;
+
+        ucdr_init_buffer(&reply_ub, reply_buffer, sizeof(reply_buffer));
+        const bool serialize_success = ardupilot_msgs_srv_Takeoff_Response_serialize_topic(&reply_ub, &takeoff_response);
+        if (serialize_success == false) {
+            break;
+        }
+
+        uxr_buffer_reply(uxr_session, reliable_out, replier_id, sample_id, reply_buffer, ucdr_buffer_length(&reply_ub));
+        GCS_SEND_TEXT(MAV_SEVERITY_INFO, "%s Request for Takeoff : %s", msg_prefix, takeoff_response.status ? "SUCCESS" : "FAIL");
+        break;
+    }
+#endif // AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED
 #if AP_DDS_ARM_CHECK_SERVER_ENABLED
     case services[to_underlying(ServiceIndex::PREARM_CHECK)].rep_id: {
         std_srvs_srv_Trigger_Request prearm_check_request;
@@ -943,7 +975,7 @@ void AP_DDS_Client::on_request(uxrSession* uxr_session, uxrObjectId object_id, u
         uxr_buffer_reply(uxr_session, reliable_out, replier_id, sample_id, reply_buffer, ucdr_buffer_length(&reply_ub));
         break;
     }
-#endif //AP_DDS_ARM_CHECK_SERVER_ENABLED    
+#endif //AP_DDS_ARM_CHECK_SERVER_ENABLED
 #if AP_DDS_PARAMETER_SERVER_ENABLED
     case services[to_underlying(ServiceIndex::SET_PARAMETERS)].rep_id: {
         const bool deserialize_success = rcl_interfaces_srv_SetParameters_Request_deserialize_topic(ub, &set_parameter_request);

libraries/AP_DDS/AP_DDS_Service_Table.h

@@ -11,6 +11,9 @@ enum class ServiceIndex: uint8_t {
 #if AP_DDS_ARM_CHECK_SERVER_ENABLED
     PREARM_CHECK,
 #endif // AP_DDS_ARM_CHECK_SERVER_ENABLED
+#if AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED
+    TAKEOFF,
+#endif // AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED
 #if AP_DDS_PARAMETER_SERVER_ENABLED
     SET_PARAMETERS,
     GET_PARAMETERS
@@ -66,6 +69,18 @@ constexpr struct AP_DDS_Client::Service_table AP_DDS_Client::services[] = {
         .reply_topic_name = "rr/ap/prearm_checkReply",
     },
 #endif // AP_DDS_ARM_CHECK_SERVER_ENABLED    
+#if AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED
+    {
+        .req_id = to_underlying(ServiceIndex::TAKEOFF),
+        .rep_id = to_underlying(ServiceIndex::TAKEOFF),
+        .service_rr = Service_rr::Replier,
+        .service_name = "rs/ap/experimental/takeoffService",
+        .request_type = "ardupilot_msgs::srv::dds_::Takeoff_Request_",
+        .reply_type = "ardupilot_msgs::srv::dds_::Takeoff_Response_",
+        .request_topic_name = "rq/ap/experimental/takeoffRequest",
+        .reply_topic_name = "rr/ap/experimental/takeoffReply",
+    },
+#endif // AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED
 #if AP_DDS_PARAMETER_SERVER_ENABLED
     {
         .req_id = to_underlying(ServiceIndex::SET_PARAMETERS),

libraries/AP_DDS/AP_DDS_config.h

@@ -141,6 +141,10 @@
 #define AP_DDS_MODE_SWITCH_SERVER_ENABLED 1
 #endif
 
+#ifndef AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED
+#define AP_DDS_VTOL_TAKEOFF_SERVER_ENABLED 1
+#endif
+
 #ifndef AP_DDS_PARAMETER_SERVER_ENABLED
 #define AP_DDS_PARAMETER_SERVER_ENABLED 1
 #endif

libraries/AP_DDS/Idl/ardupilot_msgs/srv/Takeoff.idl

@@ -0,0 +1,20 @@
+// generated from rosidl_adapter/resource/srv.idl.em
+// with input from ardupilot_msgs/srv/Takeoff.srv
+// generated code does not contain a copyright notice
+
+
+module ardupilot_msgs {
+  module srv {
+    struct Takeoff_Request {
+      @verbatim (language="comment", text=
+        "This service requests the vehicle to takeoff" "\n"
+        "float : Set the takeoff altitude [m] above home, or above terrain if rangefinder is healthy")
+      float alt;
+    };
+    @verbatim (language="comment", text=
+      "status    : True if the request for takeoff was successful, False otherwise")
+    struct Takeoff_Response {
+      boolean status;
+    };
+  };
+};

libraries/AP_DDS/README.md

@@ -210,6 +210,7 @@ $ ros2 service list
 /ap/arm_motors
 /ap/mode_switch
 /ap/prearm_check
+/ap/experimental/takeoff
 ---
 ```
 
@@ -236,6 +237,7 @@ $ ros2 service list -t
 /ap/arm_motors [ardupilot_msgs/srv/ArmMotors]
 /ap/mode_switch [ardupilot_msgs/srv/ModeSwitch]
 /ap/prearm_check [std_srvs/srv/Trigger]
+/ap/experimental/takeoff [ardupilot_msgs/srv/Takeoff]
 ```
 
 Call the arm motors service:
@@ -272,6 +274,16 @@ or
 std_srvs.srv.Trigger_Response(success=True, message='Vehicle is Armable')
 ```
 
+Call the takeoff service:
+
+```bash
+$ ros2 service call /ap/experimental/takeoff ardupilot_msgs/srv/Takeoff "{alt: 10.5}"
+requester: making request: ardupilot_msgs.srv.Takeoff_Request(alt=10.5)
+
+response:
+ardupilot_msgs.srv.Takeoff_Response(status=True)
+```
+
 ## Commanding using ROS 2 Topics
 
 The following topic can be used to control the vehicle.
@@ -296,7 +308,7 @@ ros2 topic pub /ap/cmd_gps_pose ardupilot_msgs/msg/GlobalPosition "{latitude: 34
 publisher: beginning loop
 publishing #1: ardupilot_msgs.msg.GlobalPosition(header=std_msgs.msg.Header(stamp=builtin_interfaces.msg.Time(sec=0, nanosec=0), frame_id=''), coordinate_frame=0, type_mask=0, latitude=34.0, longitude=118.0, altitude=1000.0, velocity=geometry_msgs.msg.Twist(linear=geometry_msgs.msg.Vector3(x=0.0, y=0.0, z=0.0), angular=geometry_msgs.msg.Vector3(x=0.0, y=0.0, z=0.0)), acceleration_or_force=geometry_msgs.msg.Twist(linear=geometry_msgs.msg.Vector3(x=0.0, y=0.0, z=0.0), angular=geometry_msgs.msg.Vector3(x=0.0, y=0.0, z=0.0)), yaw=0.0)
 ```
-
+ 
 ## Contributing to `AP_DDS` library
 
 ### Adding DDS messages to Ardupilot