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Multi-EKF support (ekf2)

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- ekf2 can now run in multi-instance mode (currently up to 9 instances)
    - in multi mode all estimates are published to alternate topics (eg estimator_attitude instead of vehicle_attitude)
 - new ekf2 selector runs in multi-instance mode to monitor and compare all instances, selecting a primary (eg N x estimator_attitude => vehicle_attitude)
 - sensors module accel & gyro inconsistency checks are now relative to the mean of all instances, rather than the current primary (when active ekf2 selector is responsible for choosing primary accel & gyro)
 - existing consumers of estimator_status must check estimator_selector_status to select current primary instance status
 - ekf2 single instance mode is still fully supported and the default

Co-authored-by: Paul Riseborough <gncsolns@gmail.com>
This commit is contained in:
Daniel Agar
2020-10-27 10:56:11 -04:00
committed by GitHub
co-authored by Paul Riseborough
parent d5245a22d3
commit 0f411d6820
56 changed files with 1747 additions and 295 deletions
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src/modules/mavlink/streams/HIGH_LATENCY2.hpp
+13
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@@ -43,6 +43,7 @@
#include <uORB/topics/actuator_controls.h>
#include <uORB/topics/airspeed.h>
#include <uORB/topics/battery_status.h>
#include <uORB/topics/estimator_selector_status.h>
#include <uORB/topics/estimator_status.h>
#include <uORB/topics/geofence_result.h>
#include <uORB/topics/position_controller_status.h>
@@ -285,6 +286,17 @@ private:
bool write_estimator_status(mavlink_high_latency2_t *msg)
{
// use primary estimator_status
if (_estimator_selector_status_sub.updated()) {
estimator_selector_status_s estimator_selector_status;
if (_estimator_selector_status_sub.copy(&estimator_selector_status)) {
if (estimator_selector_status.primary_instance != _estimator_status_sub.get_instance()) {
_estimator_status_sub.ChangeInstance(estimator_selector_status.primary_instance);
}
}
}
estimator_status_s estimator_status;
if (_estimator_status_sub.update(&estimator_status)) {
@@ -618,6 +630,7 @@ private:
uORB::Subscription _actuator_1_sub{ORB_ID(actuator_controls_1)};
uORB::Subscription _airspeed_sub{ORB_ID(airspeed)};
uORB::Subscription _attitude_sp_sub{ORB_ID(vehicle_attitude_setpoint)};
uORB::Subscription _estimator_selector_status_sub{ORB_ID(estimator_selector_status)};
uORB::Subscription _estimator_status_sub{ORB_ID(estimator_status)};
uORB::Subscription _pos_ctrl_status_sub{ORB_ID(position_controller_status)};
uORB::Subscription _geofence_sub{ORB_ID(geofence_result)};