ardupilot/APMrover2/commands.cpp

126 lines
3.3 KiB
C++

#include "Rover.h"
// checks if we should update ahrs home position from the EKF's position
void Rover::update_home_from_EKF()
{
// exit immediately if home already set
if (home_is_set != HOME_UNSET) {
return;
}
// move home to current ekf location (this will set home_state to HOME_SET)
set_home_to_current_location(false);
}
// set ahrs home to current location from EKF reported location or GPS
bool Rover::set_home_to_current_location(bool lock)
{
// use position from EKF if available otherwise use GPS
Location temp_loc;
if (ahrs.get_position(temp_loc)) {
return set_home(temp_loc, lock);
}
return false;
}
// sets ahrs home to specified location
// returns true if home location set successfully
bool Rover::set_home(const Location& loc, bool lock)
{
// check location is valid
if (loc.lat == 0 && loc.lng == 0 && loc.alt == 0) {
return false;
}
if (!check_latlng(loc)) {
return false;
}
// set EKF origin to home if it hasn't been set yet
Location ekf_origin;
if (!ahrs.get_origin(ekf_origin)) {
ahrs.set_origin(loc);
}
// set ahrs home
ahrs.set_home(loc);
// init compass declination
if (home_is_set == HOME_UNSET) {
// record home is set
home_is_set = HOME_SET_NOT_LOCKED;
// log new home position which mission library will pull from ahrs
if (should_log(MASK_LOG_CMD)) {
AP_Mission::Mission_Command temp_cmd;
if (mission.read_cmd_from_storage(0, temp_cmd)) {
DataFlash.Log_Write_Mission_Cmd(mission, temp_cmd);
}
}
}
// lock home position
if (lock) {
home_is_set = HOME_SET_AND_LOCKED;
}
// Save Home to EEPROM
mission.write_home_to_storage();
// log ahrs home and ekf origin dataflash
Log_Write_Home_And_Origin();
// send new home location to GCS
gcs().send_home(loc);
// send text of home position to ground stations
gcs().send_text(MAV_SEVERITY_INFO, "Set HOME to %.6f %.6f at %.2fm",
static_cast<double>(loc.lat * 1.0e-7f),
static_cast<double>(loc.lng * 1.0e-7f),
static_cast<double>(loc.alt * 0.01f));
// return success
return true;
}
// checks if we should update ahrs/RTL home position from GPS
void Rover::set_system_time_from_GPS()
{
// exit immediately if system time already set
if (system_time_set) {
return;
}
// if we have a 3d lock and valid location
if (gps.status() >= AP_GPS::GPS_OK_FIX_3D) {
// set system clock for log timestamps
const uint64_t gps_timestamp = gps.time_epoch_usec();
hal.util->set_system_clock(gps_timestamp);
// update signing timestamp
GCS_MAVLINK::update_signing_timestamp(gps_timestamp);
system_time_set = true;
}
}
/*
update home location from GPS
this is called as long as we have 3D lock and the arming switch is
not pushed
*/
void Rover::update_home()
{
if (home_is_set == HOME_SET_NOT_LOCKED) {
Location loc;
if (ahrs.get_position(loc)) {
if (get_distance(loc, ahrs.get_home()) > DISTANCE_HOME_MAX) {
ahrs.set_home(loc);
Log_Write_Home_And_Origin();
gcs().send_home(gps.location());
}
}
}
barometer.update_calibration();
}