diff options
-rw-r--r-- | src/modules/commander/accelerometer_calibration.cpp | 45 |
1 files changed, 17 insertions, 28 deletions
diff --git a/src/modules/commander/accelerometer_calibration.cpp b/src/modules/commander/accelerometer_calibration.cpp index c9bfedbda..b6aa64aa4 100644 --- a/src/modules/commander/accelerometer_calibration.cpp +++ b/src/modules/commander/accelerometer_calibration.cpp @@ -129,7 +129,7 @@ #endif static const int ERROR = -1; -int do_accel_calibration_measurements(int mavlink_fd, float accel_offs[3], float accel_scale[3]); +int do_accel_calibration_measurements(int mavlink_fd, float accel_offs[3], float accel_T[3][3]); int detect_orientation(int mavlink_fd, int sub_sensor_combined); int read_accelerometer_avg(int sensor_combined_sub, float accel_avg[3], int samples_num); int mat_invert3(float src[3][3], float dst[3][3]); @@ -142,8 +142,8 @@ int do_accel_calibration(int mavlink_fd) { /* measure and calculate offsets & scales */ float accel_offs[3]; - float accel_scale[3]; - int res = do_accel_calibration_measurements(mavlink_fd, accel_offs, accel_scale); + float accel_T[3][3]; + int res = do_accel_calibration_measurements(mavlink_fd, accel_offs, accel_T); if (res == OK) { /* measurements complete successfully, rotate calibration values */ @@ -153,34 +153,31 @@ int do_accel_calibration(int mavlink_fd) { math::Matrix board_rotation(3, 3); get_rot_matrix(board_rotation_id, &board_rotation); board_rotation = board_rotation.transpose(); - math::Vector3 vect(3); - vect(0) = accel_offs[0]; - vect(1) = accel_offs[1]; - vect(2) = accel_offs[2]; - math::Vector3 accel_offs_rotated = board_rotation * vect; - vect(0) = accel_scale[0]; - vect(1) = accel_scale[1]; - vect(2) = accel_scale[2]; - math::Vector3 accel_scale_rotated = board_rotation * vect; + math::Vector3 accel_offs_vec; + accel_offs_vec.set(&accel_offs[0]); + math::Vector3 accel_offs_rotated = board_rotation * accel_offs_vec; + math::Matrix accel_T_mat(3, 3); + accel_T_mat.set(&accel_T[0][0]); + math::Matrix accel_T_rotated = board_rotation.transpose() * accel_T_mat * board_rotation; /* set parameters */ if (param_set(param_find("SENS_ACC_XOFF"), &(accel_offs_rotated(0))) || param_set(param_find("SENS_ACC_YOFF"), &(accel_offs_rotated(1))) || param_set(param_find("SENS_ACC_ZOFF"), &(accel_offs_rotated(2))) - || param_set(param_find("SENS_ACC_XSCALE"), &(accel_scale_rotated(0))) - || param_set(param_find("SENS_ACC_YSCALE"), &(accel_scale_rotated(1))) - || param_set(param_find("SENS_ACC_ZSCALE"), &(accel_scale_rotated(2)))) { + || param_set(param_find("SENS_ACC_XSCALE"), &(accel_T_rotated(0, 0))) + || param_set(param_find("SENS_ACC_YSCALE"), &(accel_T_rotated(1, 1))) + || param_set(param_find("SENS_ACC_ZSCALE"), &(accel_T_rotated(2, 2)))) { mavlink_log_critical(mavlink_fd, "ERROR: setting offs or scale failed"); } int fd = open(ACCEL_DEVICE_PATH, 0); struct accel_scale ascale = { accel_offs_rotated(0), - accel_scale_rotated(0), + accel_T_rotated(0, 0), accel_offs_rotated(1), - accel_scale_rotated(1), + accel_T_rotated(1, 1), accel_offs_rotated(2), - accel_scale_rotated(2), + accel_T_rotated(2, 2), }; if (OK != ioctl(fd, ACCELIOCSSCALE, (long unsigned int)&ascale)) @@ -206,7 +203,7 @@ int do_accel_calibration(int mavlink_fd) { /* exit accel calibration mode */ } -int do_accel_calibration_measurements(int mavlink_fd, float accel_offs[3], float accel_scale[3]) { +int do_accel_calibration_measurements(int mavlink_fd, float accel_offs[3], float accel_T[3][3]) { const int samples_num = 2500; float accel_ref[6][3]; bool data_collected[6] = { false, false, false, false, false, false }; @@ -282,21 +279,13 @@ int do_accel_calibration_measurements(int mavlink_fd, float accel_offs[3], float } close(sensor_combined_sub); - /* calculate offsets and rotation+scale matrix */ - float accel_T[3][3]; + /* calculate offsets and transform matrix */ int res = calculate_calibration_values(accel_ref, accel_T, accel_offs, CONSTANTS_ONE_G); if (res != 0) { mavlink_log_info(mavlink_fd, "ERROR: calibration values calculation error"); return ERROR; } - /* convert accel transform matrix to scales, - * rotation part of transform matrix is not used by now - */ - for (int i = 0; i < 3; i++) { - accel_scale[i] = accel_T[i][i]; - } - return OK; } |