mirror of https://github.com/ArduPilot/ardupilot
222 lines
7.5 KiB
C++
222 lines
7.5 KiB
C++
#include "Copter.h"
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// return barometric altitude in centimeters
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void Copter::read_barometer(void)
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{
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barometer.update();
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baro_alt = barometer.get_altitude() * 100.0f;
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motors->set_air_density_ratio(barometer.get_air_density_ratio());
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}
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void Copter::init_rangefinder(void)
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{
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#if RANGEFINDER_ENABLED == ENABLED
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rangefinder.set_log_rfnd_bit(MASK_LOG_CTUN);
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rangefinder.init(ROTATION_PITCH_270);
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rangefinder_state.alt_cm_filt.set_cutoff_frequency(g2.rangefinder_filt);
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rangefinder_state.enabled = rangefinder.has_orientation(ROTATION_PITCH_270);
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// upward facing range finder
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rangefinder_up_state.alt_cm_filt.set_cutoff_frequency(g2.rangefinder_filt);
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rangefinder_up_state.enabled = rangefinder.has_orientation(ROTATION_PITCH_90);
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#endif
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}
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// return rangefinder altitude in centimeters
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void Copter::read_rangefinder(void)
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{
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#if RANGEFINDER_ENABLED == ENABLED
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rangefinder.update();
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#if RANGEFINDER_TILT_CORRECTION == ENABLED
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const float tilt_correction = MAX(0.707f, ahrs.get_rotation_body_to_ned().c.z);
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#else
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const float tilt_correction = 1.0f;
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#endif
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// iterate through downward and upward facing lidar
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struct {
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RangeFinderState &state;
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enum Rotation orientation;
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} rngfnd[2] = {{rangefinder_state, ROTATION_PITCH_270}, {rangefinder_up_state, ROTATION_PITCH_90}};
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for (uint8_t i=0; i < ARRAY_SIZE(rngfnd); i++) {
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// local variables to make accessing simpler
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RangeFinderState &rf_state = rngfnd[i].state;
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enum Rotation rf_orient = rngfnd[i].orientation;
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// update health
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rf_state.alt_healthy = ((rangefinder.status_orient(rf_orient) == RangeFinder::Status::Good) &&
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(rangefinder.range_valid_count_orient(rf_orient) >= RANGEFINDER_HEALTH_MAX));
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// tilt corrected but unfiltered, not glitch protected alt
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rf_state.alt_cm = tilt_correction * rangefinder.distance_cm_orient(rf_orient);
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// remember inertial alt to allow us to interpolate rangefinder
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rf_state.inertial_alt_cm = inertial_nav.get_altitude();
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// glitch handling. rangefinder readings more than RANGEFINDER_GLITCH_ALT_CM from the last good reading
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// are considered a glitch and glitch_count becomes non-zero
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// glitches clear after RANGEFINDER_GLITCH_NUM_SAMPLES samples in a row.
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// glitch_cleared_ms is set so surface tracking (or other consumers) can trigger a target reset
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const int32_t glitch_cm = rf_state.alt_cm - rf_state.alt_cm_glitch_protected;
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if (glitch_cm >= RANGEFINDER_GLITCH_ALT_CM) {
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rf_state.glitch_count = MAX(rf_state.glitch_count+1, 1);
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} else if (glitch_cm <= -RANGEFINDER_GLITCH_ALT_CM) {
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rf_state.glitch_count = MIN(rf_state.glitch_count-1, -1);
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} else {
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rf_state.glitch_count = 0;
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rf_state.alt_cm_glitch_protected = rf_state.alt_cm;
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}
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if (abs(rf_state.glitch_count) >= RANGEFINDER_GLITCH_NUM_SAMPLES) {
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// clear glitch and record time so consumers (i.e. surface tracking) can reset their target altitudes
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rf_state.glitch_count = 0;
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rf_state.alt_cm_glitch_protected = rf_state.alt_cm;
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rf_state.glitch_cleared_ms = AP_HAL::millis();
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}
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// filter rangefinder altitude
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uint32_t now = AP_HAL::millis();
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const bool timed_out = now - rf_state.last_healthy_ms > RANGEFINDER_TIMEOUT_MS;
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if (rf_state.alt_healthy) {
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if (timed_out) {
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// reset filter if we haven't used it within the last second
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rf_state.alt_cm_filt.reset(rf_state.alt_cm);
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} else {
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rf_state.alt_cm_filt.apply(rf_state.alt_cm, 0.05f);
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}
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rf_state.last_healthy_ms = now;
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}
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// send downward facing lidar altitude and health to the libraries that require it
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if (rf_orient == ROTATION_PITCH_270) {
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if (rangefinder_state.alt_healthy || timed_out) {
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wp_nav->set_rangefinder_alt(rangefinder_state.enabled, rangefinder_state.alt_healthy, rangefinder_state.alt_cm_filt.get());
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#if MODE_CIRCLE_ENABLED
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circle_nav->set_rangefinder_alt(rangefinder_state.enabled && wp_nav->rangefinder_used(), rangefinder_state.alt_healthy, rangefinder_state.alt_cm_filt.get());
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#endif
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#if HAL_PROXIMITY_ENABLED
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g2.proximity.set_rangefinder_alt(rangefinder_state.enabled, rangefinder_state.alt_healthy, rangefinder_state.alt_cm_filt.get());
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#endif
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}
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}
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}
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#else
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// downward facing rangefinder
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rangefinder_state.enabled = false;
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rangefinder_state.alt_healthy = false;
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rangefinder_state.alt_cm = 0;
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// upward facing rangefinder
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rangefinder_up_state.enabled = false;
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rangefinder_up_state.alt_healthy = false;
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rangefinder_up_state.alt_cm = 0;
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#endif
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}
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// return true if rangefinder_alt can be used
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bool Copter::rangefinder_alt_ok() const
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{
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return (rangefinder_state.enabled && rangefinder_state.alt_healthy);
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}
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// return true if rangefinder_alt can be used
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bool Copter::rangefinder_up_ok() const
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{
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return (rangefinder_up_state.enabled && rangefinder_up_state.alt_healthy);
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}
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/*
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get inertially interpolated rangefinder height. Inertial height is
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recorded whenever we update the rangefinder height, then we use the
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difference between the inertial height at that time and the current
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inertial height to give us interpolation of height from rangefinder
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*/
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bool Copter::get_rangefinder_height_interpolated_cm(int32_t& ret)
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{
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if (!rangefinder_alt_ok()) {
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return false;
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}
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ret = rangefinder_state.alt_cm_filt.get();
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float inertial_alt_cm = inertial_nav.get_altitude();
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ret += inertial_alt_cm - rangefinder_state.inertial_alt_cm;
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return true;
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}
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/*
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update RPM sensors
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*/
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void Copter::rpm_update(void)
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{
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#if RPM_ENABLED == ENABLED
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rpm_sensor.update();
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if (rpm_sensor.enabled(0) || rpm_sensor.enabled(1)) {
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if (should_log(MASK_LOG_RCIN)) {
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logger.Write_RPM(rpm_sensor);
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}
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}
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#endif
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}
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void Copter::compass_cal_update()
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{
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compass.cal_update();
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if (hal.util->get_soft_armed()) {
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return;
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}
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static uint32_t compass_cal_stick_gesture_begin = 0;
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if (compass.is_calibrating()) {
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if (channel_yaw->get_control_in() < -4000 && channel_throttle->get_control_in() > 900) {
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compass.cancel_calibration_all();
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}
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} else {
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bool stick_gesture_detected = compass_cal_stick_gesture_begin != 0 && !motors->armed() && channel_yaw->get_control_in() > 4000 && channel_throttle->get_control_in() > 900;
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uint32_t tnow = millis();
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if (!stick_gesture_detected) {
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compass_cal_stick_gesture_begin = tnow;
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} else if (tnow-compass_cal_stick_gesture_begin > 1000*COMPASS_CAL_STICK_GESTURE_TIME) {
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#ifdef CAL_ALWAYS_REBOOT
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compass.start_calibration_all(true,true,COMPASS_CAL_STICK_DELAY,true);
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#else
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compass.start_calibration_all(true,true,COMPASS_CAL_STICK_DELAY,false);
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#endif
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}
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}
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}
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void Copter::accel_cal_update()
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{
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if (hal.util->get_soft_armed()) {
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return;
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}
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ins.acal_update();
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// check if new trim values, and set them
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float trim_roll, trim_pitch;
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if(ins.get_new_trim(trim_roll, trim_pitch)) {
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ahrs.set_trim(Vector3f(trim_roll, trim_pitch, 0));
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}
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#ifdef CAL_ALWAYS_REBOOT
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if (ins.accel_cal_requires_reboot()) {
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hal.scheduler->delay(1000);
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hal.scheduler->reboot(false);
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}
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#endif
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}
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// initialise proximity sensor
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void Copter::init_proximity(void)
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{
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#if HAL_PROXIMITY_ENABLED
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g2.proximity.init();
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#endif
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}
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