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Diffstat (limited to 'src/modules/attitude_estimator_ekf/codegen/AttitudeEKF.c')
| -rw-r--r-- | src/modules/attitude_estimator_ekf/codegen/AttitudeEKF.c | 1456 |
1 files changed, 1456 insertions, 0 deletions
diff --git a/src/modules/attitude_estimator_ekf/codegen/AttitudeEKF.c b/src/modules/attitude_estimator_ekf/codegen/AttitudeEKF.c new file mode 100644 index 000000000..68db382cf --- /dev/null +++ b/src/modules/attitude_estimator_ekf/codegen/AttitudeEKF.c @@ -0,0 +1,1456 @@ +/* + * AttitudeEKF.c + * + * Code generation for function 'AttitudeEKF' + * + * C source code generated on: Thu Aug 21 11:17:28 2014 + * + */ + +/* Include files */ +#include "AttitudeEKF.h" + +/* Variable Definitions */ +static float Ji[9]; +static boolean_T Ji_not_empty; +static float x_apo[12]; +static float P_apo[144]; +static float Q[144]; +static boolean_T Q_not_empty; + +/* Function Declarations */ +static void AttitudeEKF_init(void); +static void b_mrdivide(const float A[72], const float B[36], float y[72]); +static void inv(const float x[9], float y[9]); +static void mrdivide(const float A[108], const float B[81], float y[108]); +static float norm(const float x[3]); + +/* Function Definitions */ +static void AttitudeEKF_init(void) +{ + int i; + static const float fv5[12] = { 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, + -9.81F, 1.0F, 0.0F, 0.0F }; + + for (i = 0; i < 12; i++) { + x_apo[i] = fv5[i]; + } + + for (i = 0; i < 144; i++) { + P_apo[i] = 200.0F; + } +} + +/* + * + */ +static void b_mrdivide(const float A[72], const float B[36], float y[72]) +{ + float b_A[36]; + signed char ipiv[6]; + int i1; + int iy; + int j; + int c; + int ix; + float temp; + int k; + float s; + int jy; + int ijA; + float Y[72]; + for (i1 = 0; i1 < 6; i1++) { + for (iy = 0; iy < 6; iy++) { + b_A[iy + 6 * i1] = B[i1 + 6 * iy]; + } + + ipiv[i1] = (signed char)(1 + i1); + } + + for (j = 0; j < 5; j++) { + c = j * 7; + iy = 0; + ix = c; + temp = (real32_T)fabs(b_A[c]); + for (k = 2; k <= 6 - j; k++) { + ix++; + s = (real32_T)fabs(b_A[ix]); + if (s > temp) { + iy = k - 1; + temp = s; + } + } + + if (b_A[c + iy] != 0.0F) { + if (iy != 0) { + ipiv[j] = (signed char)((j + iy) + 1); + ix = j; + iy += j; + for (k = 0; k < 6; k++) { + temp = b_A[ix]; + b_A[ix] = b_A[iy]; + b_A[iy] = temp; + ix += 6; + iy += 6; + } + } + + i1 = (c - j) + 6; + for (jy = c + 1; jy + 1 <= i1; jy++) { + b_A[jy] /= b_A[c]; + } + } + + iy = c; + jy = c + 6; + for (k = 1; k <= 5 - j; k++) { + temp = b_A[jy]; + if (b_A[jy] != 0.0F) { + ix = c + 1; + i1 = (iy - j) + 12; + for (ijA = 7 + iy; ijA + 1 <= i1; ijA++) { + b_A[ijA] += b_A[ix] * -temp; + ix++; + } + } + + jy += 6; + iy += 6; + } + } + + for (i1 = 0; i1 < 12; i1++) { + for (iy = 0; iy < 6; iy++) { + Y[iy + 6 * i1] = A[i1 + 12 * iy]; + } + } + + for (jy = 0; jy < 6; jy++) { + if (ipiv[jy] != jy + 1) { + for (j = 0; j < 12; j++) { + temp = Y[jy + 6 * j]; + Y[jy + 6 * j] = Y[(ipiv[jy] + 6 * j) - 1]; + Y[(ipiv[jy] + 6 * j) - 1] = temp; + } + } + } + + for (j = 0; j < 12; j++) { + c = 6 * j; + for (k = 0; k < 6; k++) { + iy = 6 * k; + if (Y[k + c] != 0.0F) { + for (jy = k + 2; jy < 7; jy++) { + Y[(jy + c) - 1] -= Y[k + c] * b_A[(jy + iy) - 1]; + } + } + } + } + + for (j = 0; j < 12; j++) { + c = 6 * j; + for (k = 5; k > -1; k += -1) { + iy = 6 * k; + if (Y[k + c] != 0.0F) { + Y[k + c] /= b_A[k + iy]; + for (jy = 0; jy + 1 <= k; jy++) { + Y[jy + c] -= Y[k + c] * b_A[jy + iy]; + } + } + } + } + + for (i1 = 0; i1 < 6; i1++) { + for (iy = 0; iy < 12; iy++) { + y[iy + 12 * i1] = Y[i1 + 6 * iy]; + } + } +} + +/* + * + */ +static void inv(const float x[9], float y[9]) +{ + float b_x[9]; + int p1; + int p2; + int p3; + float absx11; + float absx21; + float absx31; + int itmp; + for (p1 = 0; p1 < 9; p1++) { + b_x[p1] = x[p1]; + } + + p1 = 0; + p2 = 3; + p3 = 6; + absx11 = (real32_T)fabs(x[0]); + absx21 = (real32_T)fabs(x[1]); + absx31 = (real32_T)fabs(x[2]); + if ((absx21 > absx11) && (absx21 > absx31)) { + p1 = 3; + p2 = 0; + b_x[0] = x[1]; + b_x[1] = x[0]; + b_x[3] = x[4]; + b_x[4] = x[3]; + b_x[6] = x[7]; + b_x[7] = x[6]; + } else { + if (absx31 > absx11) { + p1 = 6; + p3 = 0; + b_x[0] = x[2]; + b_x[2] = x[0]; + b_x[3] = x[5]; + b_x[5] = x[3]; + b_x[6] = x[8]; + b_x[8] = x[6]; + } + } + + absx11 = b_x[1] / b_x[0]; + b_x[1] /= b_x[0]; + absx21 = b_x[2] / b_x[0]; + b_x[2] /= b_x[0]; + b_x[4] -= absx11 * b_x[3]; + b_x[5] -= absx21 * b_x[3]; + b_x[7] -= absx11 * b_x[6]; + b_x[8] -= absx21 * b_x[6]; + if ((real32_T)fabs(b_x[5]) > (real32_T)fabs(b_x[4])) { + itmp = p2; + p2 = p3; + p3 = itmp; + b_x[1] = absx21; + b_x[2] = absx11; + absx11 = b_x[4]; + b_x[4] = b_x[5]; + b_x[5] = absx11; + absx11 = b_x[7]; + b_x[7] = b_x[8]; + b_x[8] = absx11; + } + + absx11 = b_x[5] / b_x[4]; + b_x[5] /= b_x[4]; + b_x[8] -= absx11 * b_x[7]; + absx11 = (b_x[5] * b_x[1] - b_x[2]) / b_x[8]; + absx21 = -(b_x[1] + b_x[7] * absx11) / b_x[4]; + y[p1] = ((1.0F - b_x[3] * absx21) - b_x[6] * absx11) / b_x[0]; + y[p1 + 1] = absx21; + y[p1 + 2] = absx11; + absx11 = -b_x[5] / b_x[8]; + absx21 = (1.0F - b_x[7] * absx11) / b_x[4]; + y[p2] = -(b_x[3] * absx21 + b_x[6] * absx11) / b_x[0]; + y[p2 + 1] = absx21; + y[p2 + 2] = absx11; + absx11 = 1.0F / b_x[8]; + absx21 = -b_x[7] * absx11 / b_x[4]; + y[p3] = -(b_x[3] * absx21 + b_x[6] * absx11) / b_x[0]; + y[p3 + 1] = absx21; + y[p3 + 2] = absx11; +} + +/* + * + */ +static void mrdivide(const float A[108], const float B[81], float y[108]) +{ + float b_A[81]; + signed char ipiv[9]; + int i0; + int iy; + int j; + int c; + int ix; + float temp; + int k; + float s; + int jy; + int ijA; + float Y[108]; + for (i0 = 0; i0 < 9; i0++) { + for (iy = 0; iy < 9; iy++) { + b_A[iy + 9 * i0] = B[i0 + 9 * iy]; + } + + ipiv[i0] = (signed char)(1 + i0); + } + + for (j = 0; j < 8; j++) { + c = j * 10; + iy = 0; + ix = c; + temp = (real32_T)fabs(b_A[c]); + for (k = 2; k <= 9 - j; k++) { + ix++; + s = (real32_T)fabs(b_A[ix]); + if (s > temp) { + iy = k - 1; + temp = s; + } + } + + if (b_A[c + iy] != 0.0F) { + if (iy != 0) { + ipiv[j] = (signed char)((j + iy) + 1); + ix = j; + iy += j; + for (k = 0; k < 9; k++) { + temp = b_A[ix]; + b_A[ix] = b_A[iy]; + b_A[iy] = temp; + ix += 9; + iy += 9; + } + } + + i0 = (c - j) + 9; + for (jy = c + 1; jy + 1 <= i0; jy++) { + b_A[jy] /= b_A[c]; + } + } + + iy = c; + jy = c + 9; + for (k = 1; k <= 8 - j; k++) { + temp = b_A[jy]; + if (b_A[jy] != 0.0F) { + ix = c + 1; + i0 = (iy - j) + 18; + for (ijA = 10 + iy; ijA + 1 <= i0; ijA++) { + b_A[ijA] += b_A[ix] * -temp; + ix++; + } + } + + jy += 9; + iy += 9; + } + } + + for (i0 = 0; i0 < 12; i0++) { + for (iy = 0; iy < 9; iy++) { + Y[iy + 9 * i0] = A[i0 + 12 * iy]; + } + } + + for (jy = 0; jy < 9; jy++) { + if (ipiv[jy] != jy + 1) { + for (j = 0; j < 12; j++) { + temp = Y[jy + 9 * j]; + Y[jy + 9 * j] = Y[(ipiv[jy] + 9 * j) - 1]; + Y[(ipiv[jy] + 9 * j) - 1] = temp; + } + } + } + + for (j = 0; j < 12; j++) { + c = 9 * j; + for (k = 0; k < 9; k++) { + iy = 9 * k; + if (Y[k + c] != 0.0F) { + for (jy = k + 2; jy < 10; jy++) { + Y[(jy + c) - 1] -= Y[k + c] * b_A[(jy + iy) - 1]; + } + } + } + } + + for (j = 0; j < 12; j++) { + c = 9 * j; + for (k = 8; k > -1; k += -1) { + iy = 9 * k; + if (Y[k + c] != 0.0F) { + Y[k + c] /= b_A[k + iy]; + for (jy = 0; jy + 1 <= k; jy++) { + Y[jy + c] -= Y[k + c] * b_A[jy + iy]; + } + } + } + } + + for (i0 = 0; i0 < 9; i0++) { + for (iy = 0; iy < 12; iy++) { + y[iy + 12 * i0] = Y[i0 + 9 * iy]; + } + } +} + +/* + * + */ +static float norm(const float x[3]) +{ + float y; + float scale; + int k; + float absxk; + float t; + y = 0.0F; + scale = 1.17549435E-38F; + for (k = 0; k < 3; k++) { + absxk = (real32_T)fabs(x[k]); + if (absxk > scale) { + t = scale / absxk; + y = 1.0F + y * t * t; + scale = absxk; + } else { + t = absxk / scale; + y += t * t; + } + } + + return scale * (real32_T)sqrt(y); +} + +/* + * function [xa_apo,Pa_apo,Rot_matrix,eulerAngles,debugOutput]... + * = AttitudeEKF(approx_prediction,use_inertia_matrix,zFlag,dt,z,q_rotSpeed,q_rotAcc,q_acc,q_mag,r_gyro,r_accel,r_mag,J) + */ +void AttitudeEKF(unsigned char approx_prediction, unsigned char + use_inertia_matrix, const unsigned char zFlag[3], float dt, + const float z[9], float q_rotSpeed, float q_rotAcc, float q_acc, + float q_mag, float r_gyro, float r_accel, float r_mag, const + float J[9], float xa_apo[12], float Pa_apo[144], float + Rot_matrix[9], float eulerAngles[3], float debugOutput[4]) +{ + int i; + float fv0[3]; + int r2; + float zek[3]; + float muk[3]; + float b_muk[3]; + float c_muk[3]; + float fv1[3]; + float wak[3]; + float O[9]; + float b_O[9]; + static const signed char iv0[9] = { 1, 0, 0, 0, 1, 0, 0, 0, 1 }; + + float fv2[3]; + float maxval; + int r1; + float fv3[9]; + float fv4[3]; + float x_apr[12]; + signed char I[144]; + static float A_lin[144]; + static const signed char iv1[36] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, + 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; + + static float b_A_lin[144]; + float v[12]; + static float P_apr[144]; + float a[108]; + static const signed char b_a[108] = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; + + float S_k[81]; + static const signed char b[108] = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; + + float b_r_gyro[9]; + float K_k[108]; + float b_S_k[36]; + static const signed char c_a[36] = { 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; + + static const signed char b_b[36] = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; + + float c_r_gyro[3]; + float B[36]; + int r3; + float a21; + float Y[36]; + float d_a[72]; + static const signed char e_a[72] = { 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, + 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0 }; + + static const signed char c_b[72] = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 1, 0, 0, 0 }; + + float d_r_gyro[6]; + float c_S_k[6]; + float b_K_k[72]; + static const signed char f_a[72] = { 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, + 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, + 0, 0, 0, 0, 0, 1 }; + + static const signed char d_b[72] = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 1 }; + + float b_z[6]; + + /* LQG Postion Estimator and Controller */ + /* Observer: */ + /* x[n|n] = x[n|n-1] + M(y[n] - Cx[n|n-1] - Du[n]) */ + /* x[n+1|n] = Ax[n|n] + Bu[n] */ + /* */ + /* $Author: Tobias Naegeli $ $Date: 2014 $ $Revision: 3 $ */ + /* */ + /* */ + /* Arguments: */ + /* approx_prediction: if 1 then the exponential map is approximated with a */ + /* first order taylor approximation. has at the moment not a big influence */ + /* (just 1st or 2nd order approximation) we should change it to rodriquez */ + /* approximation. */ + /* use_inertia_matrix: set to true if you have the inertia matrix J for your */ + /* quadrotor */ + /* xa_apo_k: old state vectotr */ + /* zFlag: if sensor measurement is available [gyro, acc, mag] */ + /* dt: dt in s */ + /* z: measurements [gyro, acc, mag] */ + /* q_rotSpeed: process noise gyro */ + /* q_rotAcc: process noise gyro acceleration */ + /* q_acc: process noise acceleration */ + /* q_mag: process noise magnetometer */ + /* r_gyro: measurement noise gyro */ + /* r_accel: measurement noise accel */ + /* r_mag: measurement noise mag */ + /* J: moment of inertia matrix */ + /* Output: */ + /* xa_apo: updated state vectotr */ + /* Pa_apo: updated state covariance matrix */ + /* Rot_matrix: rotation matrix */ + /* eulerAngles: euler angles */ + /* debugOutput: not used */ + /* % model specific parameters */ + /* compute once the inverse of the Inertia */ + /* 'AttitudeEKF:48' if isempty(Ji) */ + if (!Ji_not_empty) { + /* 'AttitudeEKF:49' Ji=single(inv(J)); */ + inv(J, Ji); + Ji_not_empty = TRUE; + } + + /* % init */ + /* 'AttitudeEKF:54' if(isempty(x_apo)) */ + /* 'AttitudeEKF:64' if(isempty(P_apo)) */ + /* 'AttitudeEKF:69' debugOutput = single(zeros(4,1)); */ + for (i = 0; i < 4; i++) { + debugOutput[i] = 0.0F; + } + + /* % copy the states */ + /* 'AttitudeEKF:72' wx= x_apo(1); */ + /* x body angular rate */ + /* 'AttitudeEKF:73' wy= x_apo(2); */ + /* y body angular rate */ + /* 'AttitudeEKF:74' wz= x_apo(3); */ + /* z body angular rate */ + /* 'AttitudeEKF:76' wax= x_apo(4); */ + /* x body angular acceleration */ + /* 'AttitudeEKF:77' way= x_apo(5); */ + /* y body angular acceleration */ + /* 'AttitudeEKF:78' waz= x_apo(6); */ + /* z body angular acceleration */ + /* 'AttitudeEKF:80' zex= x_apo(7); */ + /* x component gravity vector */ + /* 'AttitudeEKF:81' zey= x_apo(8); */ + /* y component gravity vector */ + /* 'AttitudeEKF:82' zez= x_apo(9); */ + /* z component gravity vector */ + /* 'AttitudeEKF:84' mux= x_apo(10); */ + /* x component magnetic field vector */ + /* 'AttitudeEKF:85' muy= x_apo(11); */ + /* y component magnetic field vector */ + /* 'AttitudeEKF:86' muz= x_apo(12); */ + /* z component magnetic field vector */ + /* % prediction section */ + /* compute the apriori state estimate from the previous aposteriori estimate */ + /* body angular accelerations */ + /* 'AttitudeEKF:94' if (use_inertia_matrix==1) */ + if (use_inertia_matrix == 1) { + /* 'AttitudeEKF:95' wak =[wax;way;waz]+Ji*(-cross([wax;way;waz],J*[wax;way;waz]))*dt; */ + fv0[0] = x_apo[3]; + fv0[1] = x_apo[4]; + fv0[2] = x_apo[5]; + for (r2 = 0; r2 < 3; r2++) { + zek[r2] = 0.0F; + for (i = 0; i < 3; i++) { + zek[r2] += J[r2 + 3 * i] * fv0[i]; + } + } + + muk[0] = x_apo[3]; + muk[1] = x_apo[4]; + muk[2] = x_apo[5]; + b_muk[0] = x_apo[4] * zek[2] - x_apo[5] * zek[1]; + b_muk[1] = x_apo[5] * zek[0] - x_apo[3] * zek[2]; + b_muk[2] = x_apo[3] * zek[1] - x_apo[4] * zek[0]; + for (r2 = 0; r2 < 3; r2++) { + c_muk[r2] = -b_muk[r2]; + } + + fv1[0] = x_apo[3]; + fv1[1] = x_apo[4]; + fv1[2] = x_apo[5]; + for (r2 = 0; r2 < 3; r2++) { + fv0[r2] = 0.0F; + for (i = 0; i < 3; i++) { + fv0[r2] += Ji[r2 + 3 * i] * c_muk[i]; + } + + wak[r2] = fv1[r2] + fv0[r2] * dt; + } + } else { + /* 'AttitudeEKF:96' else */ + /* 'AttitudeEKF:97' wak =[wax;way;waz]; */ + wak[0] = x_apo[3]; + wak[1] = x_apo[4]; + wak[2] = x_apo[5]; + } + + /* body angular rates */ + /* 'AttitudeEKF:101' wk =[wx; wy; wz] + dt*wak; */ + /* derivative of the prediction rotation matrix */ + /* 'AttitudeEKF:104' O=[0,-wz,wy;wz,0,-wx;-wy,wx,0]'; */ + O[0] = 0.0F; + O[1] = -x_apo[2]; + O[2] = x_apo[1]; + O[3] = x_apo[2]; + O[4] = 0.0F; + O[5] = -x_apo[0]; + O[6] = -x_apo[1]; + O[7] = x_apo[0]; + O[8] = 0.0F; + + /* prediction of the earth z vector */ + /* 'AttitudeEKF:107' if (approx_prediction==1) */ + if (approx_prediction == 1) { + /* e^(Odt)=I+dt*O+dt^2/2!O^2 */ + /* so we do a first order approximation of the exponential map */ + /* 'AttitudeEKF:110' zek =(O*dt+single(eye(3)))*[zex;zey;zez]; */ + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + b_O[i + 3 * r2] = O[i + 3 * r2] * dt + (float)iv0[i + 3 * r2]; + } + } + + fv2[0] = x_apo[6]; + fv2[1] = x_apo[7]; + fv2[2] = x_apo[8]; + for (r2 = 0; r2 < 3; r2++) { + zek[r2] = 0.0F; + for (i = 0; i < 3; i++) { + zek[r2] += b_O[r2 + 3 * i] * fv2[i]; + } + } + } else { + /* 'AttitudeEKF:112' else */ + /* 'AttitudeEKF:113' zek =(single(eye(3))+O*dt+dt^2/2*O^2)*[zex;zey;zez]; */ + maxval = dt * dt / 2.0F; + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + b_O[r2 + 3 * i] = 0.0F; + for (r1 = 0; r1 < 3; r1++) { + b_O[r2 + 3 * i] += O[r2 + 3 * r1] * O[r1 + 3 * i]; + } + } + } + + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + fv3[i + 3 * r2] = ((float)iv0[i + 3 * r2] + O[i + 3 * r2] * dt) + maxval + * b_O[i + 3 * r2]; + } + } + + fv2[0] = x_apo[6]; + fv2[1] = x_apo[7]; + fv2[2] = x_apo[8]; + for (r2 = 0; r2 < 3; r2++) { + zek[r2] = 0.0F; + for (i = 0; i < 3; i++) { + zek[r2] += fv3[r2 + 3 * i] * fv2[i]; + } + } + + /* zek =expm2(O*dt)*[zex;zey;zez]; not working because use double */ + /* precision */ + } + + /* prediction of the magnetic vector */ + /* 'AttitudeEKF:121' if (approx_prediction==1) */ + if (approx_prediction == 1) { + /* e^(Odt)=I+dt*O+dt^2/2!O^2 */ + /* so we do a first order approximation of the exponential map */ + /* 'AttitudeEKF:124' muk =(O*dt+single(eye(3)))*[mux;muy;muz]; */ + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + b_O[i + 3 * r2] = O[i + 3 * r2] * dt + (float)iv0[i + 3 * r2]; + } + } + + fv4[0] = x_apo[9]; + fv4[1] = x_apo[10]; + fv4[2] = x_apo[11]; + for (r2 = 0; r2 < 3; r2++) { + muk[r2] = 0.0F; + for (i = 0; i < 3; i++) { + muk[r2] += b_O[r2 + 3 * i] * fv4[i]; + } + } + } else { + /* 'AttitudeEKF:125' else */ + /* 'AttitudeEKF:126' muk =(single(eye(3))+O*dt+dt^2/2*O^2)*[mux;muy;muz]; */ + maxval = dt * dt / 2.0F; + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + b_O[r2 + 3 * i] = 0.0F; + for (r1 = 0; r1 < 3; r1++) { + b_O[r2 + 3 * i] += O[r2 + 3 * r1] * O[r1 + 3 * i]; + } + } + } + + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + fv3[i + 3 * r2] = ((float)iv0[i + 3 * r2] + O[i + 3 * r2] * dt) + maxval + * b_O[i + 3 * r2]; + } + } + + fv4[0] = x_apo[9]; + fv4[1] = x_apo[10]; + fv4[2] = x_apo[11]; + for (r2 = 0; r2 < 3; r2++) { + muk[r2] = 0.0F; + for (i = 0; i < 3; i++) { + muk[r2] += fv3[r2 + 3 * i] * fv4[i]; + } + } + + /* muk =expm2(O*dt)*[mux;muy;muz]; not working because use double */ + /* precision */ + } + + /* 'AttitudeEKF:131' x_apr=[wk;wak;zek;muk]; */ + x_apr[0] = x_apo[0] + dt * wak[0]; + x_apr[1] = x_apo[1] + dt * wak[1]; + x_apr[2] = x_apo[2] + dt * wak[2]; + for (i = 0; i < 3; i++) { + x_apr[i + 3] = wak[i]; + } + + for (i = 0; i < 3; i++) { + x_apr[i + 6] = zek[i]; + } + + for (i = 0; i < 3; i++) { + x_apr[i + 9] = muk[i]; + } + + /* compute the apriori error covariance estimate from the previous */ + /* aposteriori estimate */ + /* 'AttitudeEKF:136' EZ=[0,zez,-zey; */ + /* 'AttitudeEKF:137' -zez,0,zex; */ + /* 'AttitudeEKF:138' zey,-zex,0]'; */ + /* 'AttitudeEKF:139' MA=[0,muz,-muy; */ + /* 'AttitudeEKF:140' -muz,0,mux; */ + /* 'AttitudeEKF:141' muy,-mux,0]'; */ + /* 'AttitudeEKF:143' E=single(eye(3)); */ + /* 'AttitudeEKF:144' Z=single(zeros(3)); */ + /* 'AttitudeEKF:146' A_lin=[ Z, E, Z, Z */ + /* 'AttitudeEKF:147' Z, Z, Z, Z */ + /* 'AttitudeEKF:148' EZ, Z, O, Z */ + /* 'AttitudeEKF:149' MA, Z, Z, O]; */ + /* 'AttitudeEKF:151' A_lin=eye(12)+A_lin*dt; */ + memset(&I[0], 0, 144U * sizeof(signed char)); + for (i = 0; i < 12; i++) { + I[i + 12 * i] = 1; + for (r2 = 0; r2 < 3; r2++) { + A_lin[r2 + 12 * i] = iv1[r2 + 3 * i]; + } + + for (r2 = 0; r2 < 3; r2++) { + A_lin[(r2 + 12 * i) + 3] = 0.0F; + } + } + + A_lin[6] = 0.0F; + A_lin[7] = x_apo[8]; + A_lin[8] = -x_apo[7]; + A_lin[18] = -x_apo[8]; + A_lin[19] = 0.0F; + A_lin[20] = x_apo[6]; + A_lin[30] = x_apo[7]; + A_lin[31] = -x_apo[6]; + A_lin[32] = 0.0F; + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + A_lin[(i + 12 * (r2 + 3)) + 6] = 0.0F; + } + } + + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + A_lin[(i + 12 * (r2 + 6)) + 6] = O[i + 3 * r2]; + } + } + + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + A_lin[(i + 12 * (r2 + 9)) + 6] = 0.0F; + } + } + + A_lin[9] = 0.0F; + A_lin[10] = x_apo[11]; + A_lin[11] = -x_apo[10]; + A_lin[21] = -x_apo[11]; + A_lin[22] = 0.0F; + A_lin[23] = x_apo[9]; + A_lin[33] = x_apo[10]; + A_lin[34] = -x_apo[9]; + A_lin[35] = 0.0F; + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + A_lin[(i + 12 * (r2 + 3)) + 9] = 0.0F; + } + } + + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + A_lin[(i + 12 * (r2 + 6)) + 9] = 0.0F; + } + } + + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + A_lin[(i + 12 * (r2 + 9)) + 9] = O[i + 3 * r2]; + } + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + b_A_lin[i + 12 * r2] = (float)I[i + 12 * r2] + A_lin[i + 12 * r2] * dt; + } + } + + /* process covariance matrix */ + /* 'AttitudeEKF:156' if (isempty(Q)) */ + if (!Q_not_empty) { + /* 'AttitudeEKF:157' Q=diag([ q_rotSpeed,q_rotSpeed,q_rotSpeed,... */ + /* 'AttitudeEKF:158' q_rotAcc,q_rotAcc,q_rotAcc,... */ + /* 'AttitudeEKF:159' q_acc,q_acc,q_acc,... */ + /* 'AttitudeEKF:160' q_mag,q_mag,q_mag]); */ + v[0] = q_rotSpeed; + v[1] = q_rotSpeed; + v[2] = q_rotSpeed; + v[3] = q_rotAcc; + v[4] = q_rotAcc; + v[5] = q_rotAcc; + v[6] = q_acc; + v[7] = q_acc; + v[8] = q_acc; + v[9] = q_mag; + v[10] = q_mag; + v[11] = q_mag; + memset(&Q[0], 0, 144U * sizeof(float)); + for (i = 0; i < 12; i++) { + Q[i + 12 * i] = v[i]; + } + + Q_not_empty = TRUE; + } + + /* 'AttitudeEKF:163' P_apr=A_lin*P_apo*A_lin'+Q; */ + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + A_lin[r2 + 12 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + A_lin[r2 + 12 * i] += b_A_lin[r2 + 12 * r1] * P_apo[r1 + 12 * i]; + } + } + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + maxval = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + maxval += A_lin[r2 + 12 * r1] * b_A_lin[i + 12 * r1]; + } + + P_apr[r2 + 12 * i] = maxval + Q[r2 + 12 * i]; + } + } + + /* % update */ + /* 'AttitudeEKF:167' if zFlag(1)==1&&zFlag(2)==1&&zFlag(3)==1 */ + if ((zFlag[0] == 1) && (zFlag[1] == 1) && (zFlag[2] == 1)) { + /* R=[r_gyro,0,0,0,0,0,0,0,0; */ + /* 0,r_gyro,0,0,0,0,0,0,0; */ + /* 0,0,r_gyro,0,0,0,0,0,0; */ + /* 0,0,0,r_accel,0,0,0,0,0; */ + /* 0,0,0,0,r_accel,0,0,0,0; */ + /* 0,0,0,0,0,r_accel,0,0,0; */ + /* 0,0,0,0,0,0,r_mag,0,0; */ + /* 0,0,0,0,0,0,0,r_mag,0; */ + /* 0,0,0,0,0,0,0,0,r_mag]; */ + /* 'AttitudeEKF:178' R_v=[r_gyro,r_gyro,r_gyro,r_accel,r_accel,r_accel,r_mag,r_mag,r_mag]; */ + /* observation matrix */ + /* [zw;ze;zmk]; */ + /* 'AttitudeEKF:181' H_k=[ E, Z, Z, Z; */ + /* 'AttitudeEKF:182' Z, Z, E, Z; */ + /* 'AttitudeEKF:183' Z, Z, Z, E]; */ + /* 'AttitudeEKF:185' y_k=z(1:9)-H_k*x_apr; */ + /* S_k=H_k*P_apr*H_k'+R; */ + /* 'AttitudeEKF:189' S_k=H_k*P_apr*H_k'; */ + for (r2 = 0; r2 < 9; r2++) { + for (i = 0; i < 12; i++) { + a[r2 + 9 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + a[r2 + 9 * i] += (float)b_a[r2 + 9 * r1] * P_apr[r1 + 12 * i]; + } + } + + for (i = 0; i < 9; i++) { + S_k[r2 + 9 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + S_k[r2 + 9 * i] += a[r2 + 9 * r1] * (float)b[r1 + 12 * i]; + } + } + } + + /* 'AttitudeEKF:190' S_k(1:9+1:end) = S_k(1:9+1:end) + R_v; */ + b_r_gyro[0] = r_gyro; + b_r_gyro[1] = r_gyro; + b_r_gyro[2] = r_gyro; + b_r_gyro[3] = r_accel; + b_r_gyro[4] = r_accel; + b_r_gyro[5] = r_accel; + b_r_gyro[6] = r_mag; + b_r_gyro[7] = r_mag; + b_r_gyro[8] = r_mag; + for (r2 = 0; r2 < 9; r2++) { + b_O[r2] = S_k[10 * r2] + b_r_gyro[r2]; + } + + for (r2 = 0; r2 < 9; r2++) { + S_k[10 * r2] = b_O[r2]; + } + + /* 'AttitudeEKF:191' K_k=(P_apr*H_k'/(S_k)); */ + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 9; i++) { + a[r2 + 12 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + a[r2 + 12 * i] += P_apr[r2 + 12 * r1] * (float)b[r1 + 12 * i]; + } + } + } + + mrdivide(a, S_k, K_k); + + /* 'AttitudeEKF:194' x_apo=x_apr+K_k*y_k; */ + for (r2 = 0; r2 < 9; r2++) { + maxval = 0.0F; + for (i = 0; i < 12; i++) { + maxval += (float)b_a[r2 + 9 * i] * x_apr[i]; + } + + b_O[r2] = z[r2] - maxval; + } + + for (r2 = 0; r2 < 12; r2++) { + maxval = 0.0F; + for (i = 0; i < 9; i++) { + maxval += K_k[r2 + 12 * i] * b_O[i]; + } + + x_apo[r2] = x_apr[r2] + maxval; + } + + /* 'AttitudeEKF:195' P_apo=(eye(12)-K_k*H_k)*P_apr; */ + memset(&I[0], 0, 144U * sizeof(signed char)); + for (i = 0; i < 12; i++) { + I[i + 12 * i] = 1; + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + maxval = 0.0F; + for (r1 = 0; r1 < 9; r1++) { + maxval += K_k[r2 + 12 * r1] * (float)b_a[r1 + 9 * i]; + } + + A_lin[r2 + 12 * i] = (float)I[r2 + 12 * i] - maxval; + } + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + P_apo[r2 + 12 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + P_apo[r2 + 12 * i] += A_lin[r2 + 12 * r1] * P_apr[r1 + 12 * i]; + } + } + } + } else { + /* 'AttitudeEKF:196' else */ + /* 'AttitudeEKF:197' if zFlag(1)==1&&zFlag(2)==0&&zFlag(3)==0 */ + if ((zFlag[0] == 1) && (zFlag[1] == 0) && (zFlag[2] == 0)) { + /* 'AttitudeEKF:199' R=[r_gyro,0,0; */ + /* 'AttitudeEKF:200' 0,r_gyro,0; */ + /* 'AttitudeEKF:201' 0,0,r_gyro]; */ + /* 'AttitudeEKF:202' R_v=[r_gyro,r_gyro,r_gyro]; */ + /* observation matrix */ + /* 'AttitudeEKF:205' H_k=[ E, Z, Z, Z]; */ + /* 'AttitudeEKF:207' y_k=z(1:3)-H_k(1:3,1:12)*x_apr; */ + /* S_k=H_k(1:3,1:12)*P_apr*H_k(1:3,1:12)'+R(1:3,1:3); */ + /* 'AttitudeEKF:210' S_k=H_k(1:3,1:12)*P_apr*H_k(1:3,1:12)'; */ + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 12; i++) { + b_S_k[r2 + 3 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + b_S_k[r2 + 3 * i] += (float)c_a[r2 + 3 * r1] * P_apr[r1 + 12 * i]; + } + } + + for (i = 0; i < 3; i++) { + O[r2 + 3 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + O[r2 + 3 * i] += b_S_k[r2 + 3 * r1] * (float)b_b[r1 + 12 * i]; + } + } + } + + /* 'AttitudeEKF:211' S_k(1:3+1:end) = S_k(1:3+1:end) + R_v; */ + c_r_gyro[0] = r_gyro; + c_r_gyro[1] = r_gyro; + c_r_gyro[2] = r_gyro; + for (r2 = 0; r2 < 3; r2++) { + b_muk[r2] = O[r2 << 2] + c_r_gyro[r2]; + } + + for (r2 = 0; r2 < 3; r2++) { + O[r2 << 2] = b_muk[r2]; + } + + /* 'AttitudeEKF:212' K_k=(P_apr*H_k(1:3,1:12)'/(S_k)); */ + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 3; i++) { + b_O[i + 3 * r2] = O[r2 + 3 * i]; + } + + for (i = 0; i < 12; i++) { + B[r2 + 3 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + B[r2 + 3 * i] += P_apr[i + 12 * r1] * (float)b_b[r1 + 12 * r2]; + } + } + } + + r1 = 0; + r2 = 1; + r3 = 2; + maxval = (real32_T)fabs(b_O[0]); + a21 = (real32_T)fabs(b_O[1]); + if (a21 > maxval) { + maxval = a21; + r1 = 1; + r2 = 0; + } + + if ((real32_T)fabs(b_O[2]) > maxval) { + r1 = 2; + r2 = 1; + r3 = 0; + } + + b_O[r2] /= b_O[r1]; + b_O[r3] /= b_O[r1]; + b_O[3 + r2] -= b_O[r2] * b_O[3 + r1]; + b_O[3 + r3] -= b_O[r3] * b_O[3 + r1]; + b_O[6 + r2] -= b_O[r2] * b_O[6 + r1]; + b_O[6 + r3] -= b_O[r3] * b_O[6 + r1]; + if ((real32_T)fabs(b_O[3 + r3]) > (real32_T)fabs(b_O[3 + r2])) { + i = r2; + r2 = r3; + r3 = i; + } + + b_O[3 + r3] /= b_O[3 + r2]; + b_O[6 + r3] -= b_O[3 + r3] * b_O[6 + r2]; + for (i = 0; i < 12; i++) { + Y[3 * i] = B[r1 + 3 * i]; + Y[1 + 3 * i] = B[r2 + 3 * i] - Y[3 * i] * b_O[r2]; + Y[2 + 3 * i] = (B[r3 + 3 * i] - Y[3 * i] * b_O[r3]) - Y[1 + 3 * i] * + b_O[3 + r3]; + Y[2 + 3 * i] /= b_O[6 + r3]; + Y[3 * i] -= Y[2 + 3 * i] * b_O[6 + r1]; + Y[1 + 3 * i] -= Y[2 + 3 * i] * b_O[6 + r2]; + Y[1 + 3 * i] /= b_O[3 + r2]; + Y[3 * i] -= Y[1 + 3 * i] * b_O[3 + r1]; + Y[3 * i] /= b_O[r1]; + } + + for (r2 = 0; r2 < 3; r2++) { + for (i = 0; i < 12; i++) { + b_S_k[i + 12 * r2] = Y[r2 + 3 * i]; + } + } + + /* 'AttitudeEKF:215' x_apo=x_apr+K_k*y_k; */ + for (r2 = 0; r2 < 3; r2++) { + maxval = 0.0F; + for (i = 0; i < 12; i++) { + maxval += (float)c_a[r2 + 3 * i] * x_apr[i]; + } + + b_muk[r2] = z[r2] - maxval; + } + + for (r2 = 0; r2 < 12; r2++) { + maxval = 0.0F; + for (i = 0; i < 3; i++) { + maxval += b_S_k[r2 + 12 * i] * b_muk[i]; + } + + x_apo[r2] = x_apr[r2] + maxval; + } + + /* 'AttitudeEKF:216' P_apo=(eye(12)-K_k*H_k(1:3,1:12))*P_apr; */ + memset(&I[0], 0, 144U * sizeof(signed char)); + for (i = 0; i < 12; i++) { + I[i + 12 * i] = 1; + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + maxval = 0.0F; + for (r1 = 0; r1 < 3; r1++) { + maxval += b_S_k[r2 + 12 * r1] * (float)c_a[r1 + 3 * i]; + } + + A_lin[r2 + 12 * i] = (float)I[r2 + 12 * i] - maxval; + } + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + P_apo[r2 + 12 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + P_apo[r2 + 12 * i] += A_lin[r2 + 12 * r1] * P_apr[r1 + 12 * i]; + } + } + } + } else { + /* 'AttitudeEKF:217' else */ + /* 'AttitudeEKF:218' if zFlag(1)==1&&zFlag(2)==1&&zFlag(3)==0 */ + if ((zFlag[0] == 1) && (zFlag[1] == 1) && (zFlag[2] == 0)) { + /* R=[r_gyro,0,0,0,0,0; */ + /* 0,r_gyro,0,0,0,0; */ + /* 0,0,r_gyro,0,0,0; */ + /* 0,0,0,r_accel,0,0; */ + /* 0,0,0,0,r_accel,0; */ + /* 0,0,0,0,0,r_accel]; */ + /* 'AttitudeEKF:227' R_v=[r_gyro,r_gyro,r_gyro,r_accel,r_accel,r_accel]; */ + /* observation matrix */ + /* 'AttitudeEKF:230' H_k=[ E, Z, Z, Z; */ + /* 'AttitudeEKF:231' Z, Z, E, Z]; */ + /* 'AttitudeEKF:233' y_k=z(1:6)-H_k(1:6,1:12)*x_apr; */ + /* S_k=H_k(1:6,1:12)*P_apr*H_k(1:6,1:12)'+R(1:6,1:6); */ + /* 'AttitudeEKF:236' S_k=H_k(1:6,1:12)*P_apr*H_k(1:6,1:12)'; */ + for (r2 = 0; r2 < 6; r2++) { + for (i = 0; i < 12; i++) { + d_a[r2 + 6 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + d_a[r2 + 6 * i] += (float)e_a[r2 + 6 * r1] * P_apr[r1 + 12 * i]; + } + } + + for (i = 0; i < 6; i++) { + b_S_k[r2 + 6 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + b_S_k[r2 + 6 * i] += d_a[r2 + 6 * r1] * (float)c_b[r1 + 12 * i]; + } + } + } + + /* 'AttitudeEKF:237' S_k(1:6+1:end) = S_k(1:6+1:end) + R_v; */ + d_r_gyro[0] = r_gyro; + d_r_gyro[1] = r_gyro; + d_r_gyro[2] = r_gyro; + d_r_gyro[3] = r_accel; + d_r_gyro[4] = r_accel; + d_r_gyro[5] = r_accel; + for (r2 = 0; r2 < 6; r2++) { + c_S_k[r2] = b_S_k[7 * r2] + d_r_gyro[r2]; + } + + for (r2 = 0; r2 < 6; r2++) { + b_S_k[7 * r2] = c_S_k[r2]; + } + + /* 'AttitudeEKF:238' K_k=(P_apr*H_k(1:6,1:12)'/(S_k)); */ + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 6; i++) { + d_a[r2 + 12 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + d_a[r2 + 12 * i] += P_apr[r2 + 12 * r1] * (float)c_b[r1 + 12 * i]; + } + } + } + + b_mrdivide(d_a, b_S_k, b_K_k); + + /* 'AttitudeEKF:241' x_apo=x_apr+K_k*y_k; */ + for (r2 = 0; r2 < 6; r2++) { + maxval = 0.0F; + for (i = 0; i < 12; i++) { + maxval += (float)e_a[r2 + 6 * i] * x_apr[i]; + } + + d_r_gyro[r2] = z[r2] - maxval; + } + + for (r2 = 0; r2 < 12; r2++) { + maxval = 0.0F; + for (i = 0; i < 6; i++) { + maxval += b_K_k[r2 + 12 * i] * d_r_gyro[i]; + } + + x_apo[r2] = x_apr[r2] + maxval; + } + + /* 'AttitudeEKF:242' P_apo=(eye(12)-K_k*H_k(1:6,1:12))*P_apr; */ + memset(&I[0], 0, 144U * sizeof(signed char)); + for (i = 0; i < 12; i++) { + I[i + 12 * i] = 1; + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + maxval = 0.0F; + for (r1 = 0; r1 < 6; r1++) { + maxval += b_K_k[r2 + 12 * r1] * (float)e_a[r1 + 6 * i]; + } + + A_lin[r2 + 12 * i] = (float)I[r2 + 12 * i] - maxval; + } + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + P_apo[r2 + 12 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + P_apo[r2 + 12 * i] += A_lin[r2 + 12 * r1] * P_apr[r1 + 12 * i]; + } + } + } + } else { + /* 'AttitudeEKF:243' else */ + /* 'AttitudeEKF:244' if zFlag(1)==1&&zFlag(2)==0&&zFlag(3)==1 */ + if ((zFlag[0] == 1) && (zFlag[1] == 0) && (zFlag[2] == 1)) { + /* R=[r_gyro,0,0,0,0,0; */ + /* 0,r_gyro,0,0,0,0; */ + /* 0,0,r_gyro,0,0,0; */ + /* 0,0,0,r_mag,0,0; */ + /* 0,0,0,0,r_mag,0; */ + /* 0,0,0,0,0,r_mag]; */ + /* 'AttitudeEKF:251' R_v=[r_gyro,r_gyro,r_gyro,r_mag,r_mag,r_mag]; */ + /* observation matrix */ + /* 'AttitudeEKF:254' H_k=[ E, Z, Z, Z; */ + /* 'AttitudeEKF:255' Z, Z, Z, E]; */ + /* 'AttitudeEKF:257' y_k=[z(1:3);z(7:9)]-H_k(1:6,1:12)*x_apr; */ + /* S_k=H_k(1:6,1:12)*P_apr*H_k(1:6,1:12)'+R(1:6,1:6); */ + /* 'AttitudeEKF:260' S_k=H_k(1:6,1:12)*P_apr*H_k(1:6,1:12)'; */ + for (r2 = 0; r2 < 6; r2++) { + for (i = 0; i < 12; i++) { + d_a[r2 + 6 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + d_a[r2 + 6 * i] += (float)f_a[r2 + 6 * r1] * P_apr[r1 + 12 * i]; + } + } + + for (i = 0; i < 6; i++) { + b_S_k[r2 + 6 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + b_S_k[r2 + 6 * i] += d_a[r2 + 6 * r1] * (float)d_b[r1 + 12 * i]; + } + } + } + + /* 'AttitudeEKF:261' S_k(1:6+1:end) = S_k(1:6+1:end) + R_v; */ + d_r_gyro[0] = r_gyro; + d_r_gyro[1] = r_gyro; + d_r_gyro[2] = r_gyro; + d_r_gyro[3] = r_mag; + d_r_gyro[4] = r_mag; + d_r_gyro[5] = r_mag; + for (r2 = 0; r2 < 6; r2++) { + c_S_k[r2] = b_S_k[7 * r2] + d_r_gyro[r2]; + } + + for (r2 = 0; r2 < 6; r2++) { + b_S_k[7 * r2] = c_S_k[r2]; + } + + /* 'AttitudeEKF:262' K_k=(P_apr*H_k(1:6,1:12)'/(S_k)); */ + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 6; i++) { + d_a[r2 + 12 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + d_a[r2 + 12 * i] += P_apr[r2 + 12 * r1] * (float)d_b[r1 + 12 * i]; + } + } + } + + b_mrdivide(d_a, b_S_k, b_K_k); + + /* 'AttitudeEKF:265' x_apo=x_apr+K_k*y_k; */ + for (r2 = 0; r2 < 3; r2++) { + d_r_gyro[r2] = z[r2]; + } + + for (r2 = 0; r2 < 3; r2++) { + d_r_gyro[r2 + 3] = z[6 + r2]; + } + + for (r2 = 0; r2 < 6; r2++) { + c_S_k[r2] = 0.0F; + for (i = 0; i < 12; i++) { + c_S_k[r2] += (float)f_a[r2 + 6 * i] * x_apr[i]; + } + + b_z[r2] = d_r_gyro[r2] - c_S_k[r2]; + } + + for (r2 = 0; r2 < 12; r2++) { + maxval = 0.0F; + for (i = 0; i < 6; i++) { + maxval += b_K_k[r2 + 12 * i] * b_z[i]; + } + + x_apo[r2] = x_apr[r2] + maxval; + } + + /* 'AttitudeEKF:266' P_apo=(eye(12)-K_k*H_k(1:6,1:12))*P_apr; */ + memset(&I[0], 0, 144U * sizeof(signed char)); + for (i = 0; i < 12; i++) { + I[i + 12 * i] = 1; + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + maxval = 0.0F; + for (r1 = 0; r1 < 6; r1++) { + maxval += b_K_k[r2 + 12 * r1] * (float)f_a[r1 + 6 * i]; + } + + A_lin[r2 + 12 * i] = (float)I[r2 + 12 * i] - maxval; + } + } + + for (r2 = 0; r2 < 12; r2++) { + for (i = 0; i < 12; i++) { + P_apo[r2 + 12 * i] = 0.0F; + for (r1 = 0; r1 < 12; r1++) { + P_apo[r2 + 12 * i] += A_lin[r2 + 12 * r1] * P_apr[r1 + 12 * i]; + } + } + } + } else { + /* 'AttitudeEKF:267' else */ + /* 'AttitudeEKF:268' x_apo=x_apr; */ + for (i = 0; i < 12; i++) { + x_apo[i] = x_apr[i]; + } + + /* 'AttitudeEKF:269' P_apo=P_apr; */ + memcpy(&P_apo[0], &P_apr[0], 144U * sizeof(float)); + } + } + } + } + + /* % euler anglels extraction */ + /* 'AttitudeEKF:278' z_n_b = -x_apo(7:9)./norm(x_apo(7:9)); */ + maxval = norm(*(float (*)[3])&x_apo[6]); + a21 = norm(*(float (*)[3])&x_apo[9]); + for (i = 0; i < 3; i++) { + /* 'AttitudeEKF:279' m_n_b = x_apo(10:12)./norm(x_apo(10:12)); */ + muk[i] = -x_apo[i + 6] / maxval; + zek[i] = x_apo[i + 9] / a21; + } + + /* 'AttitudeEKF:281' y_n_b=cross(z_n_b,m_n_b); */ + wak[0] = muk[1] * zek[2] - muk[2] * zek[1]; + wak[1] = muk[2] * zek[0] - muk[0] * zek[2]; + wak[2] = muk[0] * zek[1] - muk[1] * zek[0]; + + /* 'AttitudeEKF:282' y_n_b=y_n_b./norm(y_n_b); */ + maxval = norm(wak); + for (r2 = 0; r2 < 3; r2++) { + wak[r2] /= maxval; + } + + /* 'AttitudeEKF:284' x_n_b=(cross(y_n_b,z_n_b)); */ + zek[0] = wak[1] * muk[2] - wak[2] * muk[1]; + zek[1] = wak[2] * muk[0] - wak[0] * muk[2]; + zek[2] = wak[0] * muk[1] - wak[1] * muk[0]; + + /* 'AttitudeEKF:285' x_n_b=x_n_b./norm(x_n_b); */ + maxval = norm(zek); + for (r2 = 0; r2 < 3; r2++) { + zek[r2] /= maxval; + } + + /* 'AttitudeEKF:288' xa_apo=x_apo; */ + for (i = 0; i < 12; i++) { + xa_apo[i] = x_apo[i]; + } + + /* 'AttitudeEKF:289' Pa_apo=P_apo; */ + memcpy(&Pa_apo[0], &P_apo[0], 144U * sizeof(float)); + + /* rotation matrix from earth to body system */ + /* 'AttitudeEKF:291' Rot_matrix=[x_n_b,y_n_b,z_n_b]; */ + for (r2 = 0; r2 < 3; r2++) { + Rot_matrix[r2] = zek[r2]; + Rot_matrix[3 + r2] = wak[r2]; + Rot_matrix[6 + r2] = muk[r2]; + } + + /* 'AttitudeEKF:294' phi=atan2(Rot_matrix(2,3),Rot_matrix(3,3)); */ + /* 'AttitudeEKF:295' theta=-asin(Rot_matrix(1,3)); */ + /* 'AttitudeEKF:296' psi=atan2(Rot_matrix(1,2),Rot_matrix(1,1)); */ + /* 'AttitudeEKF:297' eulerAngles=[phi;theta;psi]; */ + eulerAngles[0] = (real32_T)atan2(Rot_matrix[7], Rot_matrix[8]); + eulerAngles[1] = -(real32_T)asin(Rot_matrix[6]); + eulerAngles[2] = (real32_T)atan2(Rot_matrix[3], Rot_matrix[0]); +} + +void AttitudeEKF_initialize(void) +{ + Q_not_empty = FALSE; + Ji_not_empty = FALSE; + AttitudeEKF_init(); +} + +void AttitudeEKF_terminate(void) +{ + /* (no terminate code required) */ +} + +/* End of code generation (AttitudeEKF.c) */ |