ardupilot/ArduPlane/mode_cruise.cpp

77 lines
2.1 KiB
C++

#include "mode.h"
#include "Plane.h"
bool ModeCruise::_enter()
{
locked_heading = false;
lock_timer_ms = 0;
#if HAL_SOARING_ENABLED
// for ArduSoar soaring_controller
plane.g2.soaring_controller.init_cruising();
#endif
plane.set_target_altitude_current();
return true;
}
void ModeCruise::update()
{
/*
in CRUISE mode we use the navigation code to control
roll when heading is locked. Heading becomes unlocked on
any aileron or rudder input
*/
if (plane.channel_roll->get_control_in() != 0 || plane.channel_rudder->get_control_in() != 0) {
locked_heading = false;
lock_timer_ms = 0;
}
if (!locked_heading) {
plane.nav_roll_cd = plane.channel_roll->norm_input() * plane.roll_limit_cd;
plane.update_load_factor();
} else {
plane.calc_nav_roll();
}
plane.update_fbwb_speed_height();
}
/*
handle CRUISE mode, locking heading to GPS course when we have
sufficient ground speed, and no aileron or rudder input
*/
void ModeCruise::navigate()
{
if (!locked_heading &&
plane.channel_roll->get_control_in() == 0 &&
plane.rudder_input() == 0 &&
plane.gps.status() >= AP_GPS::GPS_OK_FIX_2D &&
plane.gps.ground_speed() >= 3 &&
lock_timer_ms == 0) {
// user wants to lock the heading - start the timer
lock_timer_ms = millis();
}
if (lock_timer_ms != 0 &&
(millis() - lock_timer_ms) > 500) {
// lock the heading after 0.5 seconds of zero heading input
// from user
locked_heading = true;
lock_timer_ms = 0;
locked_heading_cd = plane.gps.ground_course_cd();
plane.prev_WP_loc = plane.current_loc;
}
if (locked_heading) {
plane.next_WP_loc = plane.prev_WP_loc;
// always look 1km ahead
plane.next_WP_loc.offset_bearing(locked_heading_cd*0.01f, plane.prev_WP_loc.get_distance(plane.current_loc) + 1000);
plane.nav_controller->update_waypoint(plane.prev_WP_loc, plane.next_WP_loc);
}
}
bool ModeCruise::get_target_heading_cd(int32_t &target_heading)
{
target_heading = locked_heading_cd;
return locked_heading;
}