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60 lines
3.7 KiB
Markdown
60 lines
3.7 KiB
Markdown
# ArmingCheckReply (UORB message)
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Arming check reply.
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This is a response to an ArmingCheckRequest message sent by the FMU to an external component, such as a ROS 2 navigation mode.
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The response contains the current set of external mode requirements, and a queue of events indicating recent failures to set the mode (which the FMU may then forward to a ground station).
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The request is sent regularly to all registered ROS modes, even while armed, so that the FMU always knows and can forward the current state.
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Note that the external component is identified by its registration_id, which is allocated to the component during registration (arming_check_id in RegisterExtComponentReply).
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The message is not used by internal/FMU components, as their mode requirements are known at compile time.
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[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/versioned/ArmingCheckReply.msg)
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```c
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# Arming check reply.
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#
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# This is a response to an ArmingCheckRequest message sent by the FMU to an external component, such as a ROS 2 navigation mode.
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# The response contains the current set of external mode requirements, and a queue of events indicating recent failures to set the mode (which the FMU may then forward to a ground station).
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# The request is sent regularly to all registered ROS modes, even while armed, so that the FMU always knows and can forward the current state.
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#
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# Note that the external component is identified by its registration_id, which is allocated to the component during registration (arming_check_id in RegisterExtComponentReply).
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# The message is not used by internal/FMU components, as their mode requirements are known at compile time.
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uint32 MESSAGE_VERSION = 1
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uint64 timestamp # [us] Time since system start.
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uint8 request_id # Id of ArmingCheckRequest for which this is a response.
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uint8 registration_id # Id of external component emitting this response.
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uint8 HEALTH_COMPONENT_INDEX_NONE = 0 # Index of health component for which this response applies.
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uint8 health_component_index # [@enum HEALTH_COMPONENT_INDEX]
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bool health_component_is_present # Unused. Intended for use with health events interface (health_component_t in events.json).
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bool health_component_warning # Unused. Intended for use with health events interface (health_component_t in events.json).
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bool health_component_error # Unused. Intended for use with health events interface (health_component_t in events.json).
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bool can_arm_and_run # True if the component can arm. For navigation mode components, true if the component can arm in the mode or switch to the mode when already armed.
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uint8 num_events # Number of queued failure messages (Event) in the events field.
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Event[5] events # Arming failure reasons (Queue of events to report to GCS).
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# Mode requirements
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bool mode_req_angular_velocity # Requires angular velocity estimate (e.g. from gyroscope).
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bool mode_req_attitude # Requires an attitude estimate.
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bool mode_req_local_alt # Requires a local altitude estimate.
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bool mode_req_local_position # Requires a local position estimate.
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bool mode_req_local_position_relaxed # Requires a more relaxed global position estimate.
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bool mode_req_global_position # Requires a global position estimate.
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bool mode_req_global_position_relaxed # Requires a relaxed global position estimate.
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bool mode_req_mission # Requires an uploaded mission.
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bool mode_req_home_position # Requires a home position (such as RTL/Return mode).
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bool mode_req_prevent_arming # Prevent arming (such as in Land mode).
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bool mode_req_manual_control # Requires a manual controller
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uint8 ORB_QUEUE_LENGTH = 4
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```
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