/**************************************************************************** * * Copyright (c) 2012-2022 PX4 Development Team. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name PX4 nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /** * Optical flow rotation * * This parameter defines the yaw rotation of the optical flow relative to the vehicle body frame. * Zero rotation is defined as X on flow board pointing towards front of vehicle. * * @value 0 No rotation * @value 1 Yaw 45° * @value 2 Yaw 90° * @value 3 Yaw 135° * @value 4 Yaw 180° * @value 5 Yaw 225° * @value 6 Yaw 270° * @value 7 Yaw 315° * * @group Sensors */ PARAM_DEFINE_INT32(SENS_FLOW_ROT, 0); /** * Minimum height above ground when reliant on optical flow. * * This parameter defines the minimum distance from ground at which the optical flow sensor operates reliably. * The sensor may be usable below this height, but accuracy will progressively reduce to loss of focus. * * @unit m * @min 0.0 * @max 1.0 * @increment 0.1 * @decimal 1 * @group Sensor Calibration */ PARAM_DEFINE_FLOAT(SENS_FLOW_MINHGT, 0.08f); /** * Maximum height above ground when reliant on optical flow. * * This parameter defines the maximum distance from ground at which the optical flow sensor operates reliably. * The height setpoint will be limited to be no greater than this value when the navigation system * is completely reliant on optical flow data and the height above ground estimate is valid. * The sensor may be usable above this height, but accuracy will progressively degrade. * * @unit m * @min 1.0 * @max 100.0 * @increment 0.1 * @decimal 1 * @group Sensor Calibration */ PARAM_DEFINE_FLOAT(SENS_FLOW_MAXHGT, 100.f); /** * Magnitude of maximum angular flow rate reliably measurable by the optical flow sensor. * * Optical flow data will not fused by the estimators if the magnitude of the flow rate exceeds this value and * control loops will be instructed to limit ground speed such that the flow rate produced by movement over ground * is less than 50% of this value. * * @unit rad/s * @min 1.0 * @decimal 2 * @group Sensor Calibration */ PARAM_DEFINE_FLOAT(SENS_FLOW_MAXR, 8.f); /** * Optical flow max rate. * * Optical flow data maximum publication rate. This is an upper bound, * actual optical flow data rate is still dependent on the sensor. * * @min 1 * @max 200 * @group Sensors * @unit Hz * * @reboot_required true * */ PARAM_DEFINE_FLOAT(SENS_FLOW_RATE, 70.0f);