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Copter: pre-arm check of EKF compass variance

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This commit is contained in:
Randy Mackay 2015-08-26 13:57:54 +09:00
parent 920d5cefbb
commit 0424b3f93c
1 changed files with 12 additions and 0 deletions
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12
ArduCopter/motors.cpp
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@ -652,6 +652,18 @@ bool Copter::pre_arm_gps_checks(bool display_failure)
return false;
}
// check EKF compass variance is below failsafe threshold
float vel_variance, pos_variance, hgt_variance, tas_variance;
Vector3f mag_variance;
Vector2f offset;
ahrs.get_NavEKF().getVariances(vel_variance, pos_variance, hgt_variance, mag_variance, tas_variance, offset);
if (mag_variance.length() >= g.fs_ekf_thresh) {
if (display_failure) {
gcs_send_text_P(MAV_SEVERITY_CRITICAL,PSTR("PreArm: EKF compass variance"));
}
return false;
}
// check home and EKF origin are not too far
if (far_from_EKF_origin(ahrs.get_home())) {
if (display_failure) {