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"""ROS2 client for fc_network MavPositionTargetGlobalInt service (SET_POSITION_TARGET_GLOBAL_INT / Offboard)."""
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from __future__ import annotations
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import math
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from dataclasses import dataclass
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import rclpy
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from rclpy.node import Node
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from fc_interfaces.srv import MavPositionTargetGlobalInt
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DEFAULT_SERVICE_NAME = "/fc_network/vehicle/pos_global_int"
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DEFAULT_TIMEOUT_SEC = 2.0
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# MAV_FRAME
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MAV_FRAME_GLOBAL_RELATIVE_ALT_INT = 6 # 使用 WGS84 GNSS 座標系 高度為相對於 Home 點高度
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# POSITION_TARGET_TYPEMASK
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# 1 1 Ignore position x
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# 2 2 Ignore position y
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# 3 4 Ignore position z
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# 4 8 Ignore velocity x
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# 5 16 Ignore velocity y
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# 6 32 Ignore velocity z
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# 7 64 Ignore acceleration x
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# 8 128 Ignore acceleration y
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# 9 256 Ignore acceleration z
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# 10 512 Use force instead of acceleration
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# 11 1024 Ignore yaw
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# 12 2048 Ignore yaw rate
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# 13+ Not Used
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# 6543210987654321
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POSITION_ONLY = 0b0000110111111000 # 忽略速度、加速度、偏航
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# 回傳 echo 與送出值比對時，浮點欄位允許的絕對誤差（MAVLink float 轉傳常有小差）
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_FLOAT_ECHO_ABS_TOL = 1e-5
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def _float_echo_equal(a: float, b: float) -> bool:
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return math.isclose(float(a), float(b), rel_tol=0.0, abs_tol=_FLOAT_ECHO_ABS_TOL)
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def _echo_position_target_matches(
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*,
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type_mask: int,
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lat_int: int,
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lon_int: int,
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alt: float,
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vx: float,
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vy: float,
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vz: float,
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afx: float,
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afy: float,
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afz: float,
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yaw: float,
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yaw_rate: float,
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time_boot_ms: int,
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resp,
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) -> tuple[bool, str]:
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"""
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比對本次送出的軌跡欄位與 server 填回的 r_* 是否一致。
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若不符，回傳 (False, 簡短說明)；相符則 (True, "")。
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"""
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_tm_sent = int(type_mask) & 0xFFF
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_tm_recv = int(resp.r_type_mask) & 0xFFF
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if _tm_recv != _tm_sent:
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return False, f"type_mask echo: sent {_tm_sent:012b} != ack {_tm_recv:012b}"
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coordinate_tolerance = 5 * 100
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if abs(resp.r_lat_int - lat_int) >= coordinate_tolerance:
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return False, f"lat_int echo: sent {lat_int} != ack {resp.r_lat_int}"
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if abs(resp.r_lon_int - lon_int) >= coordinate_tolerance:
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return False, f"lon_int echo: sent {lon_int} != ack {resp.r_lon_int}"
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# TODO 我給飛控相對高度 它回給我絕對高度 看來這個比較方法 還有很多改良點 但是之後吧
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# if not _float_echo_equal(resp.r_alt, alt):
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# return False, f"alt echo: sent {alt} != ack {resp.r_alt}"
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if not _float_echo_equal(resp.r_vx, vx):
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return False, f"vx echo: sent {vx} != ack {resp.r_vx}"
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if not _float_echo_equal(resp.r_vy, vy):
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return False, f"vy echo: sent {vy} != ack {resp.r_vy}"
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if not _float_echo_equal(resp.r_vz, vz):
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return False, f"vz echo: sent {vz} != ack {resp.r_vz}"
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if not _float_echo_equal(resp.r_afx, afx):
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return False, f"afx echo: sent {afx} != ack {resp.r_afx}"
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if not _float_echo_equal(resp.r_afy, afy):
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return False, f"afy echo: sent {afy} != ack {resp.r_afy}"
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if not _float_echo_equal(resp.r_afz, afz):
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return False, f"afz echo: sent {afz} != ack {resp.r_afz}"
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if not _float_echo_equal(resp.r_yaw, yaw):
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return False, f"yaw echo: sent {yaw} != ack {resp.r_yaw}"
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if not _float_echo_equal(resp.r_yaw_rate, yaw_rate):
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return False, f"yaw_rate echo: sent {yaw_rate} != ack {resp.r_yaw_rate}"
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# if int(resp.r_time_boot_ms) != int(time_boot_ms):
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# return False, f"time_boot_ms echo: sent {time_boot_ms} != r {resp.r_time_boot_ms}"
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return True, ""
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@dataclass
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class PositionTargetGlobalIntResult:
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"""對應 MavPositionTargetGlobalInt.srv 的 Response；success 依「送出與 r_* echo 是否一致」。"""
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success: bool
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message: str
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ack_result: int
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r_time_boot_ms: int = 0
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r_type_mask: int = 0
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r_lat_int: int = 0
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r_lon_int: int = 0
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r_alt: float = 0.0
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r_vx: float = 0.0
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r_vy: float = 0.0
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r_vz: float = 0.0
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r_afx: float = 0.0
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r_afy: float = 0.0
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r_afz: float = 0.0
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r_yaw: float = 0.0
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r_yaw_rate: float = 0.0
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class PositionTargetGlobalIntClient(Node):
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"""
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ROS2 client：對 pos_global_int service 發送 SET_POSITION_TARGET_GLOBAL_INT (msg 86)，
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並等待 POSITION_TARGET_GLOBAL_INT (msg 87) 回應（由 server 端處理）。
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"""
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def __init__(self, service_name: str = DEFAULT_SERVICE_NAME) -> None:
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if not rclpy.ok():
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rclpy.init(args=None)
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super().__init__("fc_position_target_global_int_client")
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self._client = self.create_client(MavPositionTargetGlobalInt, service_name)
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def wait_for_service(self, timeout_sec: float = 3.0) -> bool:
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return self._client.wait_for_service(timeout_sec=timeout_sec)
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def _send_position_target_global_int(
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self,
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*,
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target_sysid: int,
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target_compid: int,
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time_boot_ms: int,
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coordinate_frame: int,
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type_mask: int,
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lat_int: int,
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lon_int: int,
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alt: float,
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vx: float,
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vy: float,
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vz: float,
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afx: float,
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afy: float,
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afz: float,
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yaw: float,
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yaw_rate: float,
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timeout_sec: float,
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) -> PositionTargetGlobalIntResult:
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req = MavPositionTargetGlobalInt.Request()
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req.target_sysid = target_sysid
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req.target_compid = target_compid
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req.time_boot_ms = time_boot_ms
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req.coordinate_frame = coordinate_frame
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req.type_mask = type_mask
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req.lat_int = lat_int
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req.lon_int = lon_int
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req.alt = float(alt)
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req.vx = float(vx)
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req.vy = float(vy)
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req.vz = float(vz)
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req.afx = float(afx)
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req.afy = float(afy)
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req.afz = float(afz)
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req.yaw = float(yaw)
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req.yaw_rate = float(yaw_rate)
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req.timeout_sec = float(timeout_sec)
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future = self._client.call_async(req)
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rclpy.spin_until_future_complete(self, future, timeout_sec=float(timeout_sec) + 1.0)
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if not future.done() or future.result() is None:
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return PositionTargetGlobalIntResult(
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success=False,
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message="Service timeout.",
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ack_result=-1,
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)
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resp = future.result()
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if resp.ack_result != 0:
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return PositionTargetGlobalIntResult(
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success=False,
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message=resp.message,
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ack_result=resp.ack_result,
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)
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echo_ok, echo_detail = _echo_position_target_matches(
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type_mask=type_mask,
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lat_int=lat_int,
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lon_int=lon_int,
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alt=alt,
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vx=vx,
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vy=vy,
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vz=vz,
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afx=afx,
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afy=afy,
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afz=afz,
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yaw=yaw,
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yaw_rate=yaw_rate,
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time_boot_ms=time_boot_ms,
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resp=resp,
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)
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# out_message = resp.message
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# if not echo_ok:
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# out_message = echo_detail if not out_message else f"{echo_detail} | server: {out_message}"
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return PositionTargetGlobalIntResult(
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success=echo_ok,
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message=echo_detail,
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ack_result=resp.ack_result,
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r_time_boot_ms=int(resp.r_time_boot_ms),
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r_type_mask=int(resp.r_type_mask),
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r_lat_int=int(resp.r_lat_int),
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r_lon_int=int(resp.r_lon_int),
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r_alt=float(resp.r_alt),
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r_vx=float(resp.r_vx),
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r_vy=float(resp.r_vy),
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r_vz=float(resp.r_vz),
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r_afx=float(resp.r_afx),
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r_afy=float(resp.r_afy),
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r_afz=float(resp.r_afz),
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r_yaw=float(resp.r_yaw),
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r_yaw_rate=float(resp.r_yaw_rate),
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)
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# def set_position_target_global_int(
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# self,
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# *,
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# target_sysid: int,
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# target_compid: int = 0,
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# time_boot_ms: int = 0,
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# coordinate_frame: int = 6,
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# type_mask: int = 0,
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# lat_int: int = 0,
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# lon_int: int = 0,
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# alt: float = 0.0,
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# vx: float = 0.0,
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# vy: float = 0.0,
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# vz: float = 0.0,
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# afx: float = 0.0,
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# afy: float = 0.0,
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# afz: float = 0.0,
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# yaw: float = 0.0,
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# yaw_rate: float = 0.0,
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# timeout_sec: float = DEFAULT_TIMEOUT_SEC,
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# ) -> PositionTargetGlobalIntResult:
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# """
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# 送出 SET_POSITION_TARGET_GLOBAL_INT；coordinate_frame 預設 6 (MAV_FRAME_GLOBAL_INT)
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# 可依飛控／任務覆寫。
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# """
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# return self._send_position_target_global_int(
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# target_sysid=target_sysid,
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# target_compid=target_compid,
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# time_boot_ms=time_boot_ms,
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# coordinate_frame=coordinate_frame,
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# type_mask=type_mask,
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# lat_int=lat_int,
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# lon_int=lon_int,
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# alt=alt,
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# vx=vx,
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# vy=vy,
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# vz=vz,
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# afx=afx,
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# afy=afy,
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# afz=afz,
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# yaw=yaw,
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# yaw_rate=yaw_rate,
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# timeout_sec=timeout_sec,
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# )
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def goto_position_only(
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self,
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*,
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target_sysid: int,
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target_compid: int = 0,
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latitude_deg: float,
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longitude_deg: float,
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alt: float = 0.0,
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timeout_sec: float,
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):
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lat_int = int(round(latitude_deg * 1e7))
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lon_int = int(round(longitude_deg * 1e7))
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return self._send_position_target_global_int(
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target_sysid=target_sysid,
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target_compid=target_compid,
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time_boot_ms= 0,
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coordinate_frame=MAV_FRAME_GLOBAL_RELATIVE_ALT_INT,
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type_mask=POSITION_ONLY,
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lat_int=lat_int,
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lon_int=lon_int,
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alt=alt,
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vx=0,
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vy=0,
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vz=0,
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afx=0,
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afy=0,
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afz=0,
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yaw=0,
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yaw_rate=0,
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timeout_sec=timeout_sec,
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)
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# def set_position_target_global_int_deg(
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# self,
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# *,
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# target_sysid: int,
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# latitude_deg: float,
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# longitude_deg: float,
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# target_compid: int = 0,
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# time_boot_ms: int = 0,
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# coordinate_frame: int = MAV_FRAME_GLOBAL_RELATIVE_ALT_INT,
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# type_mask: int = 0,
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# alt: float = 0.0,
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# vx: float = 0.0,
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# vy: float = 0.0,
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# vz: float = 0.0,
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# afx: float = 0.0,
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# afy: float = 0.0,
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# afz: float = 0.0,
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# yaw: float = 0.0,
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# yaw_rate: float = 0.0,
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# timeout_sec: float = DEFAULT_TIMEOUT_SEC,
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# ) -> PositionTargetGlobalIntResult:
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# """以度為單位的緯經，轉成 MAVLink 的 lat_int / lon_int (1e7 * deg)。"""
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# lat_int = int(round(latitude_deg * 1e7))
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# lon_int = int(round(longitude_deg * 1e7))
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# return self.set_position_target_global_int(
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# target_sysid=target_sysid,
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# target_compid=target_compid,
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# time_boot_ms=time_boot_ms,
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# coordinate_frame=coordinate_frame,
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# type_mask=type_mask,
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# lat_int=lat_int,
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# lon_int=lon_int,
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# alt=alt,
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# vx=vx,
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# vy=vy,
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# vz=vz,
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# afx=afx,
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# afy=afy,
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# afz=afz,
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# yaw=yaw,
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# yaw_rate=yaw_rate,
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# timeout_sec=timeout_sec,
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# )
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