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-rwxr-xr-xsrc/modules/attitude_estimator_ekf/attitude_estimator_ekf_main.cpp6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/modules/attitude_estimator_ekf/attitude_estimator_ekf_main.cpp b/src/modules/attitude_estimator_ekf/attitude_estimator_ekf_main.cpp
index 9bb9393c5..b94a7a079 100755
--- a/src/modules/attitude_estimator_ekf/attitude_estimator_ekf_main.cpp
+++ b/src/modules/attitude_estimator_ekf/attitude_estimator_ekf_main.cpp
@@ -447,7 +447,11 @@ const unsigned int loop_interval_alarm = 6500; // loop interval in microseconds
z_k[5] = raw.accelerometer_m_s2[2] - acc(2);
/* update magnetometer measurements */
- if (sensor_last_timestamp[2] != raw.magnetometer_timestamp) {
+ if (sensor_last_timestamp[2] != raw.magnetometer_timestamp &&
+ /* check that the mag vector is > 0 */
+ fabsf(sqrtf(raw.magnetometer_ga[0] * raw.magnetometer_ga[0] +
+ raw.magnetometer_ga[1] * raw.magnetometer_ga[1] +
+ raw.magnetometer_ga[2] * raw.magnetometer_ga[2])) > 0.1f) {
update_vect[2] = 1;
// sensor_update_hz[2] = 1e6f / (raw.timestamp - sensor_last_timestamp[2]);
sensor_last_timestamp[2] = raw.magnetometer_timestamp;