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annotate Small_CPU/Src/compass.c @ 351:ba53ab77f059
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| author | heinrichsweikamp |
|---|---|
| date | Sun, 06 Oct 2019 14:12:41 +0200 |
| parents | 49f5db6139d5 |
| children | c3d511365552 |
| rev | line source |
|---|---|
| 38 | 1 /** |
| 2 ****************************************************************************** | |
| 3 * @file compass.c | |
| 4 * @author heinrichs weikamp gmbh | |
| 5 * @date 27-March-2014 | |
| 6 * @version V0.2.0 | |
| 7 * @since 21-April-2016 | |
| 8 * @brief for Honeywell Compass and ST LSM303D | |
| 9 * | |
| 10 @verbatim | |
| 11 ============================================================================== | |
| 12 ##### How to use ##### | |
| 13 ============================================================================== | |
| 14 V0.1.0 09-March-2016 | |
| 15 V0.2.0 21-April-2016 Orientation fixed for LSM303D, | |
| 16 roll and pitch added to calibration output, | |
| 17 orientation double checked with datasheets and layout | |
| 18 as well as with value output during calibration | |
| 19 V0.2.1 19-May-2016 New date rate config and full-scale selection | |
| 20 | |
| 21 @endverbatim | |
| 22 ****************************************************************************** | |
| 23 * @attention | |
| 24 * | |
| 25 * <h2><center>© COPYRIGHT(c) 2016 heinrichs weikamp</center></h2> | |
| 26 * | |
| 27 ****************************************************************************** | |
| 28 */ | |
| 29 | |
| 30 #include <math.h> | |
| 31 #include <string.h> | |
| 32 | |
| 33 #include "compass.h" | |
| 34 #include "compass_LSM303D.h" | |
| 35 | |
| 36 #include "i2c.h" | |
| 219 | 37 #include "spi.h" |
| 38 | 38 #include "RTE_FlashAccess.h" // to store compass_calib_data |
| 39 | |
| 40 #include "stm32f4xx_hal.h" | |
| 41 | |
| 42 #define TEST_IF_HMC5883L | |
| 43 //#define COMPASS_DEACTIVATE | |
| 44 | |
| 45 /// split byte to bits | |
| 46 typedef struct{ | |
| 47 uint8_t bit0:1; ///< split byte to bits | |
| 48 uint8_t bit1:1; ///< split byte to bits | |
| 49 uint8_t bit2:1; ///< split byte to bits | |
| 50 uint8_t bit3:1; ///< split byte to bits | |
| 51 uint8_t bit4:1; ///< split byte to bits | |
| 52 uint8_t bit5:1; ///< split byte to bits | |
| 53 uint8_t bit6:1; ///< split byte to bits | |
| 54 uint8_t bit7:1; ///< split byte to bits | |
| 55 } ubit8_t; | |
| 56 | |
| 57 | |
| 58 /// split byte to bits | |
| 59 typedef union{ | |
| 60 ubit8_t ub; ///< split byte to bits | |
| 61 uint8_t uw; ///< split byte to bits | |
| 62 } bit8_Type; | |
| 63 | |
| 64 | |
| 65 /// split word to 2 bytes | |
| 66 typedef struct{ | |
| 67 uint8_t low; ///< split word to 2 bytes | |
| 68 uint8_t hi; ///< split word to 2 bytes | |
| 69 } two_byte; | |
| 70 | |
| 71 | |
| 72 /// split word to 2 bytes | |
| 73 typedef union{ | |
| 74 two_byte Byte; ///< split word to 2 bytes | |
| 75 uint16_t Word; ///< split word to 2 bytes | |
| 76 } tword; | |
| 77 | |
| 78 | |
| 79 /// split signed word to 2 bytes | |
| 80 typedef union{ | |
| 81 two_byte Byte; ///< split signed word to 2 bytes | |
| 82 int16_t Word; ///< split signed word to 2 bytes | |
| 83 } signed_tword; | |
| 84 | |
| 85 | |
| 86 /// split full32 to 2 words | |
| 87 typedef struct{ | |
| 88 uint16_t low16; ///< split word to 2 bytes | |
| 89 uint16_t hi16; ///< split word to 2 bytes | |
| 90 } two_word; | |
| 91 | |
| 92 typedef union{ | |
| 93 two_word Word16; ///< split word to 2 bytes | |
| 94 uint32_t Full32; ///< split word to 2 bytes | |
| 95 } tfull32; | |
| 96 | |
| 97 | |
| 98 /// crazy compass calibration stuff | |
| 99 typedef struct | |
| 100 { | |
| 101 unsigned short int compass_N; | |
| 102 float Su, Sv, Sw; | |
| 103 float Suu, Svv, Sww, Suv, Suw, Svw; | |
| 104 float Suuu, Svvv, Swww; | |
| 105 float Suuv, Suuw, Svvu, Svvw, Swwu, Swwv; | |
| 106 } SCompassCalib; | |
| 107 | |
| 108 | |
| 109 #define Q_PI (18000) | |
| 110 #define Q_PIO2 (9000) | |
| 111 | |
| 112 #define HMC5883L (1) ///< id used with hardwareCompass | |
| 113 #define LSM303D (2) ///< id used with hardwareCompass | |
| 114 #define COMPASS_NOT_RECOGNIZED (4) ///< id used with hardwareCompass | |
| 115 | |
| 116 | |
| 117 ////////////////////////////////////////////////////////////////////////////// | |
| 118 // fifth order of polynomial approximation of atan(), giving 0.05 deg max error | |
| 119 // | |
| 120 #define K1 (5701) // Needs K1/2**16 | |
| 121 #define K2 (1645) // Needs K2/2**48 WAS NEGATIV | |
| 122 #define K3 ( 446) // Needs K3/2**80 | |
| 123 | |
| 124 const float PI = 3.14159265; ///< pi, used in compass_calc() | |
| 125 | |
| 126 typedef short int Int16; | |
| 127 typedef signed char Int8; | |
| 128 typedef Int16 Angle; | |
| 129 | |
| 130 | |
| 131 /// The (filtered) components of the magnetometer sensor | |
| 132 int16_t compass_DX_f; ///< output from sensor | |
| 133 int16_t compass_DY_f; ///< output from sensor | |
| 134 int16_t compass_DZ_f; ///< output from sensor | |
| 135 | |
| 136 | |
| 137 /// Found soft-iron calibration values, deduced from already filtered values | |
| 138 int16_t compass_CX_f; ///< calibration value | |
| 139 int16_t compass_CY_f; ///< calibration value | |
| 140 int16_t compass_CZ_f; ///< calibration value | |
| 141 | |
| 142 | |
| 143 /// The (filtered) components of the accelerometer sensor | |
| 144 int16_t accel_DX_f; ///< output from sensor | |
| 145 int16_t accel_DY_f; ///< output from sensor | |
| 146 int16_t accel_DZ_f; ///< output from sensor | |
| 147 | |
| 148 | |
| 149 /// The compass result values | |
| 150 float compass_heading; ///< the final result calculated in compass_calc() | |
| 151 float compass_roll; ///< the final result calculated in compass_calc() | |
| 152 float compass_pitch; ///< the final result calculated in compass_calc() | |
| 153 | |
| 154 | |
| 155 uint8_t compass_gain; ///< 7 on start, can be reduced during calibration | |
| 156 | |
| 157 uint8_t hardwareCompass = 0; ///< either HMC5883L or LSM303D or not defined yet ( = 0 ) | |
| 158 | |
| 159 /// LSM303D variables | |
| 160 uint8_t magDataBuffer[6]; ///< here raw data from LSM303D is stored, can be local | |
| 161 uint8_t accDataBuffer[6]; ///< here raw data from LSM303D is stored, can be local | |
| 162 | |
| 163 //uint16_t velMag = 0; | |
| 164 //uint16_t velAcc = 0; | |
| 165 | |
| 166 //uint16_t magODR[] = {31,62,125,250,500,1000,2000}; | |
| 167 //uint16_t accODR[] = {0,31,62,125,250,500,1000,2000,4000,8000,16000}; | |
| 168 //uint8_t fastest = 10; //no sensor is the fastest | |
| 169 //uint8_t datas1 = 0; | |
| 170 //uint8_t zoffFlag = 0; | |
| 171 //uint8_t sendFlag = 0; | |
| 172 | |
| 173 | |
| 174 // all by pixhawk code: | |
| 175 | |
| 176 // struct accel_scale _accel_scale; | |
| 177 unsigned _accel_range_m_s2; | |
| 178 float _accel_range_scale; | |
| 179 unsigned _accel_samplerate; | |
| 180 unsigned _accel_onchip_filter_bandwith; | |
| 181 | |
| 182 // struct mag_scale _mag_scale; | |
| 183 unsigned _mag_range_ga; | |
| 184 float _mag_range_scale; | |
| 185 unsigned _mag_samplerate; | |
| 186 | |
| 187 // default scale factors | |
| 188 float _accel_scale_x_offset = 0.0f; | |
| 189 float _accel_scale_x_scale = 1.0f; | |
| 190 float _accel_scale_y_offset = 0.0f; | |
| 191 float _accel_scale_y_scale = 1.0f; | |
| 192 float _accel_scale_z_offset = 0.0f; | |
| 193 float _accel_scale_z_scale = 1.0f; | |
| 194 | |
| 195 float _mag_scale_x_offset = 0.0f; | |
| 196 float _mag_scale_x_scale = 1.0f; | |
| 197 float _mag_scale_y_offset = 0.0f; | |
| 198 float _mag_scale_y_scale = 1.0f; | |
| 199 float _mag_scale_z_offset = 0.0f; | |
| 200 float _mag_scale_z_scale = 1.0f; | |
| 201 | |
| 202 | |
| 203 /* External function prototypes ----------------------------------------------*/ | |
| 204 | |
| 205 extern void copyCompassDataDuringCalibration(int16_t dx, int16_t dy, int16_t dz); | |
| 206 | |
| 207 /* Private function prototypes -----------------------------------------------*/ | |
| 208 | |
| 209 void compass_reset_calibration(SCompassCalib *g); | |
| 210 void compass_add_calibration(SCompassCalib *g); | |
| 211 void compass_solve_calibration(SCompassCalib *g); | |
| 212 | |
| 213 void compass_init_HMC5883L(uint8_t fast, uint8_t gain); | |
| 214 void compass_sleep_HMC5883L(void); | |
| 215 void compass_read_HMC5883L(void); | |
| 216 | |
| 217 void accelerator_init_MMA8452Q(void); | |
| 218 void accelerator_sleep_MMA8452Q(void); | |
| 219 void acceleration_read_MMA8452Q(void); | |
| 220 | |
| 221 void compass_init_LSM303D(uint8_t fast, uint8_t gain); | |
| 222 void compass_sleep_LSM303D(void); | |
| 223 void compass_read_LSM303D(void); | |
| 224 void acceleration_read_LSM303D(void); | |
| 225 | |
| 226 int LSM303D_accel_set_onchip_lowpass_filter_bandwidth(unsigned bandwidth); | |
| 227 int compass_calib_common(void); | |
| 228 | |
| 229 void compass_calc_roll_pitch_only(void); | |
| 230 | |
| 231 void rotate_mag_3f(float *x, float *y, float *z); | |
| 232 void rotate_accel_3f(float *x, float *y, float *z); | |
| 233 | |
| 234 | |
| 235 /* Exported functions --------------------------------------------------------*/ | |
| 236 | |
| 237 | |
| 238 // =============================================================================== | |
| 239 // compass_init | |
| 240 /// @brief This might be called several times with different gain values during calibration | |
| 241 /// On first call it figures out which hardware is integrated | |
| 242 /// | |
| 243 /// @param gain: 7 is max gain, compass_calib() might reduce it | |
| 244 // =============================================================================== | |
| 245 | |
| 246 uint8_t testCompassTypeDebug = 0xFF; | |
| 247 | |
| 248 void compass_init(uint8_t fast, uint8_t gain) | |
| 249 { | |
| 250 // quick off | |
| 251 #ifdef COMPASS_DEACTIVATE | |
| 252 hardwareCompass = COMPASS_NOT_RECOGNIZED; | |
| 253 #endif | |
| 254 | |
| 255 // don't call again with fast, gain in calib mode etc. | |
| 256 // if unknown | |
| 257 if(hardwareCompass == COMPASS_NOT_RECOGNIZED) | |
| 258 { | |
| 259 return; | |
| 260 } | |
| 261 | |
| 262 // old code but without else | |
| 263 if(hardwareCompass == 0) | |
| 264 { | |
| 265 uint8_t data = WHO_AM_I; | |
| 266 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 267 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
| 268 if(data == WHOIAM_VALUE) | |
| 269 hardwareCompass = LSM303D; | |
| 70 | 270 else |
| 271 hardwareCompass = HMC5883L; | |
| 38 | 272 } |
| 273 | |
| 180 | 274 /* No compass identified => Retry */ |
| 38 | 275 if(hardwareCompass == 0) |
| 276 { | |
| 277 uint8_t data = WHO_AM_I; | |
| 278 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 279 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
| 280 if(data == WHOIAM_VALUE) | |
| 281 hardwareCompass = LSM303D; | |
| 282 else | |
| 283 hardwareCompass = HMC5883L; | |
| 284 } | |
| 70 | 285 |
| 180 | 286 /* Assume that a HMC5883L is equipped by default if detection still failed */ |
| 38 | 287 if(hardwareCompass == 0) |
| 288 hardwareCompass = HMC5883L; | |
| 289 | |
| 290 #ifdef TEST_IF_HMC5883L | |
| 291 HAL_StatusTypeDef resultOfOperationHMC_MMA = HAL_TIMEOUT; | |
| 292 | |
| 293 if(hardwareCompass == HMC5883L) | |
| 294 { | |
| 295 uint8_t data = 0x2A; // CTRL_REG1 of DEVICE_ACCELARATOR_MMA8452Q | |
| 296 resultOfOperationHMC_MMA = I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, &data, 1); | |
| 297 if(resultOfOperationHMC_MMA == HAL_OK) | |
| 298 { | |
| 299 hardwareCompass = HMC5883L; // all fine, keep it | |
| 300 } | |
| 301 else | |
| 302 { | |
| 303 hardwareCompass = COMPASS_NOT_RECOGNIZED; | |
| 304 testCompassTypeDebug = 0xEC; | |
| 305 } | |
| 306 } | |
| 307 #endif | |
| 308 | |
| 309 if(hardwareCompass == LSM303D) | |
| 310 { | |
| 311 compass_init_LSM303D(fast, gain); | |
| 312 } | |
| 313 else | |
| 314 if(hardwareCompass == HMC5883L) | |
| 315 { | |
| 316 compass_init_HMC5883L(fast, gain); | |
| 317 } | |
| 318 | |
| 319 tfull32 dataBlock[4]; | |
| 320 if(BFA_readLastDataBlock((uint32_t *)dataBlock) == BFA_OK) | |
| 321 { | |
| 322 compass_CX_f = dataBlock[0].Word16.low16; | |
| 323 compass_CY_f = dataBlock[0].Word16.hi16; | |
| 324 compass_CZ_f = dataBlock[1].Word16.low16; | |
| 325 } | |
| 326 | |
| 327 } | |
| 328 | |
| 329 | |
| 330 // =============================================================================== | |
| 331 // compass_calib | |
| 332 /// @brief with onchip_lowpass_filter configuration for accelerometer of LSM303D | |
| 333 // =============================================================================== | |
| 334 int compass_calib(void) | |
| 335 { | |
| 336 if(hardwareCompass == LSM303D) | |
| 337 { | |
| 338 LSM303D_accel_set_onchip_lowpass_filter_bandwidth(773); | |
| 339 int out = compass_calib_common(); | |
| 340 LSM303D_accel_set_onchip_lowpass_filter_bandwidth(LSM303D_ACCEL_DEFAULT_ONCHIP_FILTER_FREQ); | |
| 341 return out; | |
| 342 } | |
| 343 else | |
| 344 if(hardwareCompass == HMC5883L) | |
| 345 { | |
| 346 return compass_calib_common(); | |
| 347 } | |
| 348 else | |
| 349 { | |
| 350 return 0; // standard answer of compass_calib_common(); | |
| 351 } | |
| 352 | |
| 353 | |
| 354 } | |
| 355 | |
| 356 | |
| 357 // =============================================================================== | |
| 358 // compass_sleep | |
| 359 /// @brief low power mode | |
| 360 // =============================================================================== | |
| 361 void compass_sleep(void) | |
| 362 { | |
| 363 if(hardwareCompass == LSM303D) | |
| 364 { | |
| 365 compass_sleep_LSM303D(); | |
| 366 } | |
| 367 else | |
| 368 if(hardwareCompass == HMC5883L) | |
| 369 { | |
| 370 compass_sleep_HMC5883L(); | |
| 371 } | |
| 372 } | |
| 373 | |
| 374 | |
| 375 // =============================================================================== | |
| 376 // compass_read | |
| 377 /// @brief reads magnetometer and accelerometer for LSM303D, | |
| 378 /// otherwise magnetometer only | |
| 379 // =============================================================================== | |
| 380 void compass_read(void) | |
| 381 { | |
| 382 if(hardwareCompass == LSM303D) | |
| 383 { | |
| 384 compass_read_LSM303D(); | |
| 385 } | |
| 386 else | |
| 387 if(hardwareCompass == HMC5883L) | |
| 388 { | |
| 389 compass_read_HMC5883L(); | |
| 390 } | |
| 391 } | |
| 392 | |
| 393 | |
| 394 // =============================================================================== | |
| 395 // accelerator_init | |
| 396 /// @brief empty for for LSM303D | |
| 397 // =============================================================================== | |
| 398 void accelerator_init(void) | |
| 399 { | |
| 400 if(hardwareCompass == HMC5883L) | |
| 401 accelerator_init_MMA8452Q(); | |
| 402 } | |
| 403 | |
| 404 | |
| 405 // =============================================================================== | |
| 406 // accelerator_sleep | |
| 407 /// @brief empty for for LSM303D | |
| 408 // =============================================================================== | |
| 409 void accelerator_sleep(void) | |
| 410 { | |
| 411 if(hardwareCompass == HMC5883L) | |
| 412 accelerator_sleep_MMA8452Q(); | |
| 413 } | |
| 414 | |
| 415 | |
| 416 // =============================================================================== | |
| 417 // acceleration_read | |
| 418 /// @brief empty for for LSM303D | |
| 419 // =============================================================================== | |
| 420 void acceleration_read(void) | |
| 421 { | |
| 422 if(hardwareCompass == LSM303D) | |
| 423 { | |
| 424 acceleration_read_LSM303D(); | |
| 425 } | |
| 426 else | |
| 427 if(hardwareCompass == HMC5883L) | |
| 428 { | |
| 429 acceleration_read_MMA8452Q(); | |
| 430 } | |
| 431 } | |
| 432 | |
| 433 | |
| 434 /* Private functions ---------------------------------------------------------*/ | |
| 435 | |
| 436 // =============================================================================== | |
| 437 // LSM303D_read_reg | |
| 438 /// @brief tiny helpers by pixhawk | |
| 439 // =============================================================================== | |
| 440 uint8_t LSM303D_read_reg(uint8_t addr) | |
| 441 { | |
| 442 uint8_t data; | |
| 443 | |
| 444 I2C_Master_Transmit( DEVICE_COMPASS_303D, &addr, 1); | |
| 445 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
| 446 return data; | |
| 447 } | |
| 448 | |
| 449 | |
| 450 // =============================================================================== | |
| 451 // LSM303D_write_reg | |
| 452 /// @brief tiny helpers by pixhawk | |
| 453 // =============================================================================== | |
| 454 void LSM303D_write_reg(uint8_t addr, uint8_t value) | |
| 455 { | |
| 456 uint8_t data[2]; | |
| 457 | |
| 458 /* enable accel*/ | |
| 459 data[0] = addr; | |
| 460 data[1] = value; | |
| 461 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 2); | |
| 462 } | |
| 463 | |
| 464 | |
| 465 // =============================================================================== | |
| 466 // LSM303D_write_checked_reg | |
| 467 /// @brief tiny helpers by pixhawk. This runs unchecked at the moment. | |
| 468 // =============================================================================== | |
| 469 void LSM303D_write_checked_reg(uint8_t addr, uint8_t value) | |
| 470 { | |
| 471 LSM303D_write_reg(addr, value); | |
| 472 } | |
| 473 | |
| 474 | |
| 475 // =============================================================================== | |
| 476 // LSM303D_modify_reg | |
| 477 /// @brief tiny helpers by pixhawk | |
| 478 // =============================================================================== | |
| 479 void LSM303D_modify_reg(unsigned reg, uint8_t clearbits, uint8_t setbits) | |
| 480 { | |
| 481 uint8_t val; | |
| 482 | |
| 483 val = LSM303D_read_reg(reg); | |
| 484 val &= ~clearbits; | |
| 485 val |= setbits; | |
| 486 LSM303D_write_checked_reg(reg, val); | |
| 487 } | |
| 488 | |
| 489 /* | |
| 490 // =============================================================================== | |
| 491 // LSM303D_accel_set_range | |
| 492 /// @brief tiny helpers by pixhawk | |
| 493 // =============================================================================== | |
| 494 int LSM303D_accel_set_range(unsigned max_g) | |
| 495 { | |
| 496 uint8_t setbits = 0; | |
| 497 uint8_t clearbits = REG2_FULL_SCALE_BITS_A; | |
| 498 float new_scale_g_digit = 0.0f; | |
| 499 | |
| 500 if (max_g == 0) { | |
| 501 max_g = 16; | |
| 502 } | |
| 503 | |
| 504 if (max_g <= 2) { | |
| 505 _accel_range_m_s2 = 2.0f * LSM303D_ONE_G; | |
| 506 setbits |= REG2_FULL_SCALE_2G_A; | |
| 507 new_scale_g_digit = 0.061e-3f; | |
| 508 | |
| 509 } else if (max_g <= 4) { | |
| 510 _accel_range_m_s2 = 4.0f * LSM303D_ONE_G; | |
| 511 setbits |= REG2_FULL_SCALE_4G_A; | |
| 512 new_scale_g_digit = 0.122e-3f; | |
| 513 | |
| 514 } else if (max_g <= 6) { | |
| 515 _accel_range_m_s2 = 6.0f * LSM303D_ONE_G; | |
| 516 setbits |= REG2_FULL_SCALE_6G_A; | |
| 517 new_scale_g_digit = 0.183e-3f; | |
| 518 | |
| 519 } else if (max_g <= 8) { | |
| 520 _accel_range_m_s2 = 8.0f * LSM303D_ONE_G; | |
| 521 setbits |= REG2_FULL_SCALE_8G_A; | |
| 522 new_scale_g_digit = 0.244e-3f; | |
| 523 | |
| 524 } else if (max_g <= 16) { | |
| 525 _accel_range_m_s2 = 16.0f * LSM303D_ONE_G; | |
| 526 setbits |= REG2_FULL_SCALE_16G_A; | |
| 527 new_scale_g_digit = 0.732e-3f; | |
| 528 | |
| 529 } else { | |
| 530 return -1; | |
| 531 } | |
| 532 | |
| 533 _accel_range_scale = new_scale_g_digit * LSM303D_ONE_G; | |
| 534 | |
| 535 | |
| 536 LSM303D_modify_reg(ADDR_CTRL_REG2, clearbits, setbits); | |
| 537 | |
| 538 return 0; | |
| 539 } | |
| 540 */ | |
| 541 /* | |
| 542 // =============================================================================== | |
| 543 // LSM303D_mag_set_range | |
| 544 /// @brief tiny helpers by pixhawk | |
| 545 // =============================================================================== | |
| 546 int LSM303D_mag_set_range(unsigned max_ga) | |
| 547 { | |
| 548 uint8_t setbits = 0; | |
| 549 uint8_t clearbits = REG6_FULL_SCALE_BITS_M; | |
| 550 float new_scale_ga_digit = 0.0f; | |
| 551 | |
| 552 if (max_ga == 0) { | |
| 553 max_ga = 12; | |
| 554 } | |
| 555 | |
| 556 if (max_ga <= 2) { | |
| 557 _mag_range_ga = 2; | |
| 558 setbits |= REG6_FULL_SCALE_2GA_M; | |
| 559 new_scale_ga_digit = 0.080e-3f; | |
| 560 | |
| 561 } else if (max_ga <= 4) { | |
| 562 _mag_range_ga = 4; | |
| 563 setbits |= REG6_FULL_SCALE_4GA_M; | |
| 564 new_scale_ga_digit = 0.160e-3f; | |
| 565 | |
| 566 } else if (max_ga <= 8) { | |
| 567 _mag_range_ga = 8; | |
| 568 setbits |= REG6_FULL_SCALE_8GA_M; | |
| 569 new_scale_ga_digit = 0.320e-3f; | |
| 570 | |
| 571 } else if (max_ga <= 12) { | |
| 572 _mag_range_ga = 12; | |
| 573 setbits |= REG6_FULL_SCALE_12GA_M; | |
| 574 new_scale_ga_digit = 0.479e-3f; | |
| 575 | |
| 576 } else { | |
| 577 return -1; | |
| 578 } | |
| 579 | |
| 580 _mag_range_scale = new_scale_ga_digit; | |
| 581 | |
| 582 LSM303D_modify_reg(ADDR_CTRL_REG6, clearbits, setbits); | |
| 583 | |
| 584 return 0; | |
| 585 } | |
| 586 */ | |
| 587 | |
| 588 // =============================================================================== | |
| 589 // LSM303D_accel_set_onchip_lowpass_filter_bandwidth | |
| 590 /// @brief tiny helpers by pixhawk | |
| 591 // =============================================================================== | |
| 592 int LSM303D_accel_set_onchip_lowpass_filter_bandwidth(unsigned bandwidth) | |
| 593 { | |
| 594 uint8_t setbits = 0; | |
| 595 uint8_t clearbits = REG2_ANTIALIAS_FILTER_BW_BITS_A; | |
| 596 | |
| 597 if (bandwidth == 0) { | |
| 598 bandwidth = 773; | |
| 599 } | |
| 600 | |
| 601 if (bandwidth <= 50) { | |
| 602 setbits |= REG2_AA_FILTER_BW_50HZ_A; | |
| 603 _accel_onchip_filter_bandwith = 50; | |
| 604 | |
| 605 } else if (bandwidth <= 194) { | |
| 606 setbits |= REG2_AA_FILTER_BW_194HZ_A; | |
| 607 _accel_onchip_filter_bandwith = 194; | |
| 608 | |
| 609 } else if (bandwidth <= 362) { | |
| 610 setbits |= REG2_AA_FILTER_BW_362HZ_A; | |
| 611 _accel_onchip_filter_bandwith = 362; | |
| 612 | |
| 613 } else if (bandwidth <= 773) { | |
| 614 setbits |= REG2_AA_FILTER_BW_773HZ_A; | |
| 615 _accel_onchip_filter_bandwith = 773; | |
| 616 | |
| 617 } else { | |
| 618 return -1; | |
| 619 } | |
| 620 | |
| 621 LSM303D_modify_reg(ADDR_CTRL_REG2, clearbits, setbits); | |
| 622 | |
| 623 return 0; | |
| 624 } | |
| 625 | |
| 626 | |
| 627 // =============================================================================== | |
| 628 // LSM303D_accel_set_driver_lowpass_filter | |
| 629 /// @brief tiny helpers by pixhawk. This one is not used at the moment! | |
| 630 // =============================================================================== | |
| 631 int LSM303D_accel_set_driver_lowpass_filter(float samplerate, float bandwidth) | |
| 632 { | |
| 633 /* | |
| 634 _accel_filter_x_set_cutoff_frequency(samplerate, bandwidth); | |
| 635 _accel_filter_y_set_cutoff_frequency(samplerate, bandwidth); | |
| 636 _accel_filter_z_set_cutoff_frequency(samplerate, bandwidth); | |
| 637 */ | |
| 638 return 0; | |
| 639 } | |
| 640 | |
| 641 /* unused 170821 | |
| 642 // =============================================================================== | |
| 643 // LSM303D_accel_set_samplerate | |
| 644 /// @brief tiny helpers by pixhawk | |
| 645 // =============================================================================== | |
| 646 int LSM303D_accel_set_samplerate(unsigned frequency) | |
| 647 { | |
| 648 uint8_t setbits = 0; | |
| 649 uint8_t clearbits = REG1_RATE_BITS_A; | |
| 650 | |
| 651 // if (frequency == 0 || frequency == ACCEL_SAMPLERATE_DEFAULT) { | |
| 652 frequency = 1600; | |
| 653 // } | |
| 654 | |
| 655 if (frequency <= 3) { | |
| 656 setbits |= REG1_RATE_3_125HZ_A; | |
| 657 _accel_samplerate = 3; | |
| 658 | |
| 659 } else if (frequency <= 6) { | |
| 660 setbits |= REG1_RATE_6_25HZ_A; | |
| 661 _accel_samplerate = 6; | |
| 662 | |
| 663 } else if (frequency <= 12) { | |
| 664 setbits |= REG1_RATE_12_5HZ_A; | |
| 665 _accel_samplerate = 12; | |
| 666 | |
| 667 } else if (frequency <= 25) { | |
| 668 setbits |= REG1_RATE_25HZ_A; | |
| 669 _accel_samplerate = 25; | |
| 670 | |
| 671 } else if (frequency <= 50) { | |
| 672 setbits |= REG1_RATE_50HZ_A; | |
| 673 _accel_samplerate = 50; | |
| 674 | |
| 675 } else if (frequency <= 100) { | |
| 676 setbits |= REG1_RATE_100HZ_A; | |
| 677 _accel_samplerate = 100; | |
| 678 | |
| 679 } else if (frequency <= 200) { | |
| 680 setbits |= REG1_RATE_200HZ_A; | |
| 681 _accel_samplerate = 200; | |
| 682 | |
| 683 } else if (frequency <= 400) { | |
| 684 setbits |= REG1_RATE_400HZ_A; | |
| 685 _accel_samplerate = 400; | |
| 686 | |
| 687 } else if (frequency <= 800) { | |
| 688 setbits |= REG1_RATE_800HZ_A; | |
| 689 _accel_samplerate = 800; | |
| 690 | |
| 691 } else if (frequency <= 1600) { | |
| 692 setbits |= REG1_RATE_1600HZ_A; | |
| 693 _accel_samplerate = 1600; | |
| 694 | |
| 695 } else { | |
| 696 return -1; | |
| 697 } | |
| 698 | |
| 699 LSM303D_modify_reg(ADDR_CTRL_REG1, clearbits, setbits); | |
| 700 return 0; | |
| 701 } | |
| 702 // =============================================================================== | |
| 703 // LSM303D_mag_set_samplerate | |
| 704 /// @brief tiny helpers by pixhawk | |
| 705 // =============================================================================== | |
| 706 int LSM303D_mag_set_samplerate(unsigned frequency) | |
| 707 { | |
| 708 uint8_t setbits = 0; | |
| 709 uint8_t clearbits = REG5_RATE_BITS_M; | |
| 710 | |
| 711 if (frequency == 0) { | |
| 712 frequency = 100; | |
| 713 } | |
| 714 | |
| 715 if (frequency <= 3) { | |
| 716 setbits |= REG5_RATE_3_125HZ_M; | |
| 717 _mag_samplerate = 25; | |
| 718 | |
| 719 } else if (frequency <= 6) { | |
| 720 setbits |= REG5_RATE_6_25HZ_M; | |
| 721 _mag_samplerate = 25; | |
| 722 | |
| 723 } else if (frequency <= 12) { | |
| 724 setbits |= REG5_RATE_12_5HZ_M; | |
| 725 _mag_samplerate = 25; | |
| 726 | |
| 727 } else if (frequency <= 25) { | |
| 728 setbits |= REG5_RATE_25HZ_M; | |
| 729 _mag_samplerate = 25; | |
| 730 | |
| 731 } else if (frequency <= 50) { | |
| 732 setbits |= REG5_RATE_50HZ_M; | |
| 733 _mag_samplerate = 50; | |
| 734 | |
| 735 } else if (frequency <= 100) { | |
| 736 setbits |= REG5_RATE_100HZ_M; | |
| 737 _mag_samplerate = 100; | |
| 738 | |
| 739 } else { | |
| 740 return -1; | |
| 741 } | |
| 742 | |
| 743 LSM303D_modify_reg(ADDR_CTRL_REG5, clearbits, setbits); | |
| 744 return 0; | |
| 745 } | |
| 746 */ | |
| 747 | |
| 748 | |
| 749 // rotate_mag_3f: nicht genutzt aber praktisch; rotate_accel_3f wird benutzt | |
| 750 // =============================================================================== | |
| 751 // rotate_mag_3f | |
| 752 /// @brief swap axis in convient way, by hw | |
| 753 /// @param *x raw input is set to *y input | |
| 754 /// @param *y raw input is set to -*x input | |
| 755 /// @param *z raw is not touched | |
| 756 // =============================================================================== | |
| 757 void rotate_mag_3f(float *x, float *y, float *z) | |
| 758 { | |
| 759 return; | |
| 760 /* | |
| 761 *x = *x; // HMC: *x = -*y | |
| 762 *y = *y; // HMC: *y = *x // change 20.04.2016: zuvor *y = -*y | |
| 763 *z = *z; // HMC: *z = *z | |
| 764 */ | |
| 765 } | |
| 766 | |
| 767 | |
| 768 // =============================================================================== | |
| 769 // rotate_accel_3f | |
| 770 /// @brief swap axis in convient way, by hw, same as MMA8452Q | |
| 771 /// @param *x raw input, output is with sign change | |
| 772 /// @param *y raw input, output is with sign change | |
| 773 /// @param *z raw input, output is with sign change | |
| 774 // =============================================================================== | |
| 775 void rotate_accel_3f(float *x, float *y, float *z) | |
| 776 { | |
| 777 *x = -*x; | |
| 778 *y = -*y; | |
| 779 *z = -*z; | |
| 780 /* tested: | |
| 781 x = x, y =-y, z=-z: does not work with roll | |
| 782 x = x, y =y, z=-z: does not work with pitch | |
| 783 x = x, y =y, z=z: does not work at all | |
| 784 */ | |
| 785 } | |
| 786 | |
| 787 | |
| 788 // =============================================================================== | |
| 789 // compass_init_LSM303D by PIXhawk (LSM303D::reset()) | |
| 790 // https://raw.githubusercontent.com/PX4/Firmware/master/src/drivers/lsm303d/lsm303d.cpp | |
| 791 /// @brief The new ST 303D | |
| 792 /// This might be called several times with different gain values during calibration | |
| 793 /// but gain change is not supported at the moment. | |
| 794 /// | |
| 795 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
| 796 // =============================================================================== | |
| 797 | |
| 798 //uint8_t testCompassLS303D[11]; | |
| 799 | |
| 800 void compass_init_LSM303D(uint8_t fast, uint8_t gain) | |
| 801 { | |
| 802 // matthias version 160620 | |
| 803 if(fast == 0) | |
| 804 { | |
| 805 LSM303D_write_checked_reg(ADDR_CTRL_REG0, 0x00); | |
| 806 LSM303D_write_checked_reg(ADDR_CTRL_REG1, 0x3F); // mod 12,5 Hz 3 instead of 6,25 Hz 2 | |
| 807 LSM303D_write_checked_reg(ADDR_CTRL_REG2, 0xC0); | |
| 808 LSM303D_write_checked_reg(ADDR_CTRL_REG3, 0x00); | |
| 809 LSM303D_write_checked_reg(ADDR_CTRL_REG4, 0x00); | |
| 810 LSM303D_write_checked_reg(ADDR_CTRL_REG5, 0x68); // mod 12,5 Hz 8 instead of 6,25 Hz 4 | |
| 811 } | |
| 812 else | |
| 813 { | |
| 814 LSM303D_write_checked_reg(ADDR_CTRL_REG0, 0x00); | |
| 815 LSM303D_write_checked_reg(ADDR_CTRL_REG1, 0x6F); // 100 Hz | |
| 816 LSM303D_write_checked_reg(ADDR_CTRL_REG2, 0xC0); | |
| 817 LSM303D_write_checked_reg(ADDR_CTRL_REG3, 0x00); | |
| 818 LSM303D_write_checked_reg(ADDR_CTRL_REG4, 0x00); | |
| 819 LSM303D_write_checked_reg(ADDR_CTRL_REG5, 0x74); // 100 Hz | |
| 820 } | |
| 821 LSM303D_write_checked_reg(ADDR_CTRL_REG6, 0x00); | |
| 822 LSM303D_write_checked_reg(ADDR_CTRL_REG7, 0x00); | |
| 823 | |
| 824 /* | |
| 825 uint8_t data; | |
| 826 for(int i=0;i<11;i++) | |
| 827 { | |
| 828 data = ADDR_INT_THS_L_M + i; | |
| 829 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 830 I2C_Master_Receive( DEVICE_COMPASS_303D, &testCompassLS303D[i], 1); | |
| 831 } | |
| 832 */ | |
| 833 | |
| 834 return; | |
| 835 /* | |
| 836 LSM303D_accel_set_range(LSM303D_ACCEL_DEFAULT_RANGE_G); // modifies ADDR_CTRL_REG2 | |
| 837 LSM303D_accel_set_samplerate(LSM303D_ACCEL_DEFAULT_RATE); // modifies ADDR_CTRL_REG1 | |
| 838 | |
| 839 LSM303D_mag_set_range(LSM303D_MAG_DEFAULT_RANGE_GA); | |
| 840 LSM303D_mag_set_samplerate(LSM303D_MAG_DEFAULT_RATE); | |
| 841 */ | |
| 842 | |
| 843 /* | |
| 844 // my stuff hw | |
| 845 // enable accel | |
| 846 LSM303D_write_checked_reg(ADDR_CTRL_REG1, | |
| 847 REG1_X_ENABLE_A | REG1_Y_ENABLE_A | REG1_Z_ENABLE_A | REG1_BDU_UPDATE | REG1_RATE_800HZ_A); | |
| 848 | |
| 849 // enable mag | |
| 850 LSM303D_write_checked_reg(ADDR_CTRL_REG7, REG7_CONT_MODE_M); | |
| 851 LSM303D_write_checked_reg(ADDR_CTRL_REG5, REG5_RES_HIGH_M | REG5_ENABLE_T); | |
| 852 LSM303D_write_checked_reg(ADDR_CTRL_REG3, 0x04); // DRDY on ACCEL on INT1 | |
| 853 LSM303D_write_checked_reg(ADDR_CTRL_REG4, 0x04); // DRDY on MAG on INT2 | |
| 854 | |
| 855 LSM303D_accel_set_range(LSM303D_ACCEL_DEFAULT_RANGE_G); | |
| 856 LSM303D_accel_set_samplerate(LSM303D_ACCEL_DEFAULT_RATE); | |
| 857 LSM303D_accel_set_driver_lowpass_filter((float)LSM303D_ACCEL_DEFAULT_RATE, (float)LSM303D_ACCEL_DEFAULT_DRIVER_FILTER_FREQ); | |
| 858 //LSM303D_accel_set_onchip_lowpass_filter_bandwidth(773); // factory setting | |
| 859 | |
| 860 // we setup the anti-alias on-chip filter as 50Hz. We believe | |
| 861 // this operates in the analog domain, and is critical for | |
| 862 // anti-aliasing. The 2 pole software filter is designed to | |
| 863 // operate in conjunction with this on-chip filter | |
| 864 if(fast) | |
| 865 LSM303D_accel_set_onchip_lowpass_filter_bandwidth(773); // factory setting | |
| 866 else | |
| 867 LSM303D_accel_set_onchip_lowpass_filter_bandwidth(LSM303D_ACCEL_DEFAULT_ONCHIP_FILTER_FREQ); | |
| 868 | |
| 869 | |
| 870 LSM303D_mag_set_range(LSM303D_MAG_DEFAULT_RANGE_GA); | |
| 871 LSM303D_mag_set_samplerate(LSM303D_MAG_DEFAULT_RATE); | |
| 872 */ | |
| 873 } | |
| 874 | |
| 875 | |
| 876 // =============================================================================== | |
| 877 // compass_sleep_LSM303D | |
| 878 /// @brief The new compass chip, hopefully this works! | |
| 879 // =============================================================================== | |
| 880 void compass_sleep_LSM303D(void) | |
| 881 { | |
| 882 LSM303D_write_checked_reg(ADDR_CTRL_REG1, 0x00); // CNTRL1: acceleration sensor Power-down mode | |
| 883 LSM303D_write_checked_reg(ADDR_CTRL_REG7, 0x02); // CNTRL7: magnetic sensor Power-down mode | |
| 884 } | |
| 885 | |
| 886 | |
| 887 // =============================================================================== | |
| 888 // acceleration_read_LSM303D | |
| 889 /// @brief The new LSM303D, code by pixhawk | |
| 890 /// | |
| 891 /// output is accel_DX_f, accel_DY_f, accel_DZ_f | |
| 892 // =============================================================================== | |
| 893 void acceleration_read_LSM303D(void) | |
| 894 { | |
| 895 uint8_t data; | |
| 896 float xraw_f, yraw_f, zraw_f; | |
| 897 float accel_report_x, accel_report_y, accel_report_z; | |
| 898 | |
| 899 memset(accDataBuffer,0,6); | |
| 900 | |
| 901 accel_DX_f = 0; | |
| 902 accel_DY_f = 0; | |
| 903 accel_DZ_f = 0; | |
| 904 | |
| 905 for(int i=0;i<6;i++) | |
| 906 { | |
| 907 data = ADDR_OUT_X_L_A + i; | |
| 908 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 909 I2C_Master_Receive( DEVICE_COMPASS_303D, &accDataBuffer[i], 1); | |
| 910 } | |
| 911 | |
| 912 xraw_f = ((float)( (int16_t)((accDataBuffer[1] << 8) | (accDataBuffer[0])))); | |
| 913 yraw_f = ((float)( (int16_t)((accDataBuffer[3] << 8) | (accDataBuffer[2])))); | |
| 914 zraw_f = ((float)( (int16_t)((accDataBuffer[5] << 8) | (accDataBuffer[4])))); | |
| 915 | |
| 916 rotate_accel_3f(&xraw_f, &yraw_f, &zraw_f); | |
| 917 | |
| 918 // mh | |
| 919 accel_report_x = xraw_f; | |
| 920 accel_report_y = yraw_f; | |
| 921 accel_report_z = zraw_f; | |
| 922 | |
| 923 // my stuff | |
| 924 /* | |
| 925 accel_report_x = ((xraw_f * _accel_range_scale) - _accel_scale_x_offset) * _accel_scale_x_scale; | |
| 926 accel_report_y = ((yraw_f * _accel_range_scale) - _accel_scale_y_offset) * _accel_scale_y_scale; | |
| 927 accel_report_z = ((zraw_f * _accel_range_scale) - _accel_scale_z_offset) * _accel_scale_z_scale; | |
| 928 */ | |
| 929 accel_DX_f = ((int16_t)(accel_report_x)); | |
| 930 accel_DY_f = ((int16_t)(accel_report_y)); | |
| 931 accel_DZ_f = ((int16_t)(accel_report_z)); | |
| 932 } | |
| 933 /* special code after accel_report_z = ... | |
| 934 * prior to output | |
| 935 // we have logs where the accelerometers get stuck at a fixed | |
| 936 // large value. We want to detect this and mark the sensor as | |
| 937 // being faulty | |
| 938 | |
| 939 if (fabsf(_last_accel[0] - x_in_new) < 0.001f && | |
| 940 fabsf(_last_accel[1] - y_in_new) < 0.001f && | |
| 941 fabsf(_last_accel[2] - z_in_new) < 0.001f && | |
| 942 fabsf(x_in_new) > 20 && | |
| 943 fabsf(y_in_new) > 20 && | |
| 944 fabsf(z_in_new) > 20) { | |
| 945 _constant_accel_count += 1; | |
| 946 | |
| 947 } else { | |
| 948 _constant_accel_count = 0; | |
| 949 } | |
| 950 | |
| 951 if (_constant_accel_count > 100) { | |
| 952 // we've had 100 constant accel readings with large | |
| 953 // values. The sensor is almost certainly dead. We | |
| 954 // will raise the error_count so that the top level | |
| 955 // flight code will know to avoid this sensor, but | |
| 956 // we'll still give the data so that it can be logged | |
| 957 // and viewed | |
| 958 perf_count(_bad_values); | |
| 959 _constant_accel_count = 0; | |
| 960 } | |
| 961 | |
| 962 _last_accel[0] = x_in_new; | |
| 963 _last_accel[1] = y_in_new; | |
| 964 _last_accel[2] = z_in_new; | |
| 965 | |
| 966 accel_report.x = _accel_filter_x.apply(x_in_new); | |
| 967 accel_report.y = _accel_filter_y.apply(y_in_new); | |
| 968 accel_report.z = _accel_filter_z.apply(z_in_new); | |
| 969 | |
| 970 math::Vector<3> aval(x_in_new, y_in_new, z_in_new); | |
| 971 math::Vector<3> aval_integrated; | |
| 972 | |
| 973 bool accel_notify = _accel_int.put(accel_report.timestamp, aval, aval_integrated, accel_report.integral_dt); | |
| 974 accel_report.x_integral = aval_integrated(0); | |
| 975 accel_report.y_integral = aval_integrated(1); | |
| 976 accel_report.z_integral = aval_integrated(2); | |
| 977 */ | |
| 978 | |
| 979 | |
| 980 // =============================================================================== | |
| 981 // compass_read_LSM303D | |
| 982 /// @brief The new LSM303D, code by pixhawk | |
| 983 /// | |
| 984 /// output is compass_DX_f, compass_DY_f, compass_DZ_f | |
| 985 // =============================================================================== | |
| 986 void compass_read_LSM303D(void) | |
| 987 { | |
| 988 uint8_t data; | |
| 989 // float xraw_f, yraw_f, zraw_f; | |
| 990 // float mag_report_x, mag_report_y, mag_report_z; | |
| 991 | |
| 992 memset(magDataBuffer,0,6); | |
| 993 | |
| 994 compass_DX_f = 0; | |
| 995 compass_DY_f = 0; | |
| 996 compass_DZ_f = 0; | |
| 997 | |
| 998 for(int i=0;i<6;i++) | |
| 999 { | |
| 1000 data = ADDR_OUT_X_L_M + i; | |
| 1001 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 1002 I2C_Master_Receive( DEVICE_COMPASS_303D, &magDataBuffer[i], 1); | |
| 1003 } | |
| 1004 | |
| 1005 // mh 160620 flip x and y if flip display | |
| 1006 compass_DX_f = (((int16_t)((magDataBuffer[1] << 8) | (magDataBuffer[0])))); | |
| 1007 compass_DY_f = (((int16_t)((magDataBuffer[3] << 8) | (magDataBuffer[2])))); | |
| 1008 compass_DZ_f = (((int16_t)((magDataBuffer[5] << 8) | (magDataBuffer[4])))); | |
| 1009 // no rotation | |
| 1010 return; | |
| 1011 /* | |
| 1012 // my stuff | |
| 1013 compass_DX_f = (((int16_t)((magDataBuffer[1] << 8) | (magDataBuffer[0]))) / 10) - 200; | |
| 1014 compass_DY_f = (((int16_t)((magDataBuffer[3] << 8) | (magDataBuffer[2]))) / 10) - 200; | |
| 1015 compass_DZ_f = (((int16_t)((magDataBuffer[5] << 8) | (magDataBuffer[4]))) / 10) - 200; | |
| 1016 */ | |
| 1017 // old | |
| 1018 /* | |
| 1019 xraw_f = ((float)( (int16_t)((magDataBuffer[1] << 8) | (magDataBuffer[0])))); | |
| 1020 yraw_f = ((float)( (int16_t)((magDataBuffer[3] << 8) | (magDataBuffer[2])))); | |
| 1021 zraw_f = ((float)( (int16_t)((magDataBuffer[5] << 8) | (magDataBuffer[4])))); | |
| 1022 | |
| 1023 rotate_mag_3f(&xraw_f, &yraw_f, &zraw_f); | |
| 1024 | |
| 1025 compass_DX_f = (int16_t)((xraw_f * 0.1f) - 200.0f); | |
| 1026 compass_DY_f = (int16_t)((yraw_f * 0.1f) - 200.0f); | |
| 1027 compass_DZ_f = (int16_t)((zraw_f * 0.1f) - 200.0f); | |
| 1028 */ | |
| 1029 /* | |
| 1030 mag_report_x = ((xraw_f * _mag_range_scale) - _mag_scale_x_offset) * _mag_scale_x_scale; | |
| 1031 mag_report_y = ((yraw_f * _mag_range_scale) - _mag_scale_y_offset) * _mag_scale_y_scale; | |
| 1032 mag_report_z = ((zraw_f * _mag_range_scale) - _mag_scale_z_offset) * _mag_scale_z_scale; | |
| 1033 | |
| 1034 compass_DX_f = (int16_t)(mag_report_x * 1000.0f); // 1000.0 is just a wild guess by hw | |
| 1035 compass_DY_f = (int16_t)(mag_report_y * 1000.0f); | |
| 1036 compass_DZ_f = (int16_t)(mag_report_z * 1000.0f); | |
| 1037 */ | |
| 1038 } | |
| 1039 | |
| 1040 | |
| 1041 // -------------------------------------------------------------------------------- | |
| 1042 // ----------EARLIER COMPONENTS --------------------------------------------------- | |
| 1043 // -------------------------------------------------------------------------------- | |
| 1044 | |
| 1045 // =============================================================================== | |
| 1046 // compass_init_HMC5883L | |
| 1047 /// @brief The horrible Honeywell compass chip | |
| 1048 /// This might be called several times during calibration | |
| 1049 /// | |
| 1050 /// @param fast: 1 is fast mode, 0 is normal mode | |
| 1051 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
| 1052 // =============================================================================== | |
| 1053 void compass_init_HMC5883L(uint8_t fast, uint8_t gain) | |
| 1054 { | |
| 1055 uint8_t write_buffer[4]; | |
| 1056 | |
| 1057 compass_gain = gain; | |
| 1058 uint16_t length = 0; | |
| 1059 write_buffer[0] = 0x00; // 00 = config Register A | |
| 1060 | |
| 1061 if( fast ) | |
| 1062 write_buffer[1] = 0x38; // 0b 0011 1000; // ConfigA: 75Hz, 2 Samples averaged | |
| 1063 else | |
| 1064 write_buffer[1] = 0x68; // 0b 0110 1000; // ConfigA: 3Hz, 8 Samples averaged | |
| 1065 | |
| 1066 switch(gain) | |
| 1067 { | |
| 1068 case 7: | |
| 1069 write_buffer[2] = 0xE0; //0b 1110 0000; // ConfigB: gain | |
| 1070 break; | |
| 1071 case 6: | |
| 1072 write_buffer[2] = 0xC0; //0b 1100 0000; // ConfigB: gain | |
| 1073 break; | |
| 1074 case 5: | |
| 1075 write_buffer[2] = 0xA0; //0b 1010 0000; // ConfigB: gain | |
| 1076 break; | |
| 1077 case 4: | |
| 1078 write_buffer[2] = 0x80; //0b 1000 0000; // ConfigB: gain | |
| 1079 break; | |
| 1080 case 3: | |
| 1081 write_buffer[2] = 0x60; //0b 0110 0000; // ConfigB: gain | |
| 1082 break; | |
| 1083 case 2: | |
| 1084 write_buffer[2] = 0x40; //0b 01000 0000; // ConfigB: gain | |
| 1085 break; | |
| 1086 case 1: | |
| 1087 write_buffer[2] = 0x20; //0b 00100 0000; // ConfigB: gain | |
| 1088 break; | |
| 1089 case 0: | |
| 1090 write_buffer[2] = 0x00; //0b 00000 0000; // ConfigB: gain | |
| 1091 break; | |
| 1092 } | |
| 1093 write_buffer[3] = 0x00; // Mode: continuous mode | |
| 1094 length = 4; | |
| 1095 //hmc_twi_write(0); | |
| 1096 I2C_Master_Transmit( DEVICE_COMPASS_HMC5883L, write_buffer, length); | |
| 1097 } | |
| 1098 | |
| 1099 | |
| 1100 | |
| 1101 // =============================================================================== | |
| 1102 // compass_sleep_HMC5883L | |
| 1103 /// @brief Power-down mode for Honeywell compass chip | |
| 1104 // =============================================================================== | |
| 1105 void compass_sleep_HMC5883L(void) | |
| 1106 { | |
| 1107 uint8_t write_buffer[4]; | |
| 1108 uint16_t length = 0; | |
| 1109 | |
| 1110 write_buffer[0] = 0x00; // 00 = config Register A | |
| 1111 write_buffer[1] = 0x68; // 0b 0110 1000; // ConfigA | |
| 1112 write_buffer[2] = 0x20; // 0b 0010 0000; // ConfigB | |
| 1113 write_buffer[3] = 0x02; // 0b 0000 0010; // Idle Mode | |
| 1114 length = 4; | |
| 1115 I2C_Master_Transmit( DEVICE_COMPASS_HMC5883L, write_buffer, length); | |
| 1116 } | |
| 1117 | |
| 1118 | |
| 1119 // =============================================================================== | |
| 1120 // accelerator_init_MMA8452Q | |
| 1121 /// @brief Power-down mode for acceleration chip used in combination with Honeywell compass | |
| 1122 // =============================================================================== | |
| 1123 void accelerator_init_MMA8452Q(void) | |
| 1124 { | |
| 1125 uint8_t write_buffer[4]; | |
| 1126 uint16_t length = 0; | |
| 1127 //HAL_Delay(1); | |
| 1128 //return; | |
| 1129 write_buffer[0] = 0x0E; // XYZ_DATA_CFG | |
| 1130 write_buffer[1] = 0x00;//0b00000000; // High pass Filter=0 , +/- 2g range | |
| 1131 length = 2; | |
| 1132 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
| 1133 //HAL_Delay(1); | |
| 1134 write_buffer[0] = 0x2A; // CTRL_REG1 | |
| 1135 write_buffer[1] = 0x34; //0b00110100; // CTRL_REG1: 160ms data rate, St.By Mode, reduced noise mode | |
| 1136 write_buffer[2] = 0x02; //0b00000010; // CTRL_REG2: High Res in Active mode | |
| 1137 length = 3; | |
| 1138 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
| 1139 | |
| 1140 //HAL_Delay(1); | |
| 1141 //hw_delay_us(100); | |
| 1142 write_buffer[0] = 0x2A; // CTRL_REG1 | |
| 1143 write_buffer[1] = 0x35; //0b00110101; // CTRL_REG1: ... Active Mode | |
| 1144 length = 2; | |
| 1145 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
| 1146 /* | |
| 1147 HAL_Delay(6); | |
| 1148 compass_read(); | |
| 1149 HAL_Delay(1); | |
| 1150 acceleration_read(); | |
| 1151 | |
| 1152 compass_calc(); | |
| 1153 */ | |
| 1154 } | |
| 1155 | |
| 1156 | |
| 1157 // =============================================================================== | |
| 1158 // accelerator_sleep_MMA8452Q | |
| 1159 /// @brief compass_sleep_HMC5883L | |
| 1160 // =============================================================================== | |
| 1161 void accelerator_sleep_MMA8452Q(void) | |
| 1162 { | |
| 1163 uint16_t length = 0; | |
| 1164 uint8_t write_buffer[4]; | |
| 1165 | |
| 1166 write_buffer[0] = 0x2A; // CTRL_REG1 | |
| 1167 write_buffer[1] = 0x00; //0b00000000; // CTRL_REG1: Standby Mode | |
| 1168 length = 2; | |
| 1169 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
| 1170 } | |
| 1171 | |
| 1172 | |
| 1173 // =============================================================================== | |
| 1174 // compass_read_HMC5883L | |
| 1175 /// @brief The new ST 303D - get ALL data and store in static variables | |
| 1176 /// | |
| 1177 /// output is compass_DX_f, compass_DY_f, compass_DZ_f | |
| 1178 // =============================================================================== | |
| 1179 void compass_read_HMC5883L(void) | |
| 1180 { | |
| 1181 uint8_t buffer[20]; | |
| 1182 compass_DX_f = 0; | |
| 1183 compass_DY_f = 0; | |
| 1184 compass_DZ_f = 0; | |
| 1185 uint8_t length = 0; | |
| 1186 uint8_t read_buffer[6]; | |
| 1187 signed_tword data; | |
| 1188 for(int i = 0; i<6;i++) | |
| 1189 read_buffer[i] = 0; | |
| 1190 buffer[0] = 0x03; // 03 = Data Output X MSB Register | |
| 1191 length = 1; | |
| 1192 I2C_Master_Transmit( DEVICE_COMPASS_HMC5883L, buffer, length); | |
| 1193 length = 6; | |
| 1194 I2C_Master_Receive( DEVICE_COMPASS_HMC5883L, read_buffer, length); | |
| 1195 | |
| 1196 | |
| 1197 data.Byte.hi = read_buffer[0]; | |
| 1198 data.Byte.low = read_buffer[1]; | |
| 1199 //Y = Z | |
| 1200 compass_DY_f = - data.Word; | |
| 1201 | |
| 1202 data.Byte.hi = read_buffer[2]; | |
| 1203 data.Byte.low = read_buffer[3]; | |
| 1204 compass_DZ_f = data.Word; | |
| 1205 | |
| 1206 data.Byte.hi = read_buffer[4]; | |
| 1207 data.Byte.low = read_buffer[5]; | |
| 1208 //X = -Y | |
| 1209 compass_DX_f = data.Word; | |
| 1210 } | |
| 1211 | |
| 1212 | |
| 1213 // =============================================================================== | |
| 1214 // acceleration_read_MMA8452Q | |
| 1215 /// @brief The old MMA8452Q used with the Honeywell compass | |
| 1216 /// get the acceleration data and store in static variables | |
| 1217 /// | |
| 1218 /// output is accel_DX_f, accel_DY_f, accel_DZ_f | |
| 1219 // =============================================================================== | |
| 1220 void acceleration_read_MMA8452Q(void) | |
| 1221 { | |
| 1222 uint8_t buffer[20]; | |
| 1223 accel_DX_f = 0; | |
| 1224 accel_DY_f = 0; | |
| 1225 accel_DZ_f = 0; | |
| 1226 uint8_t length = 0; | |
| 1227 // bit8_Type status ; | |
| 1228 uint8_t read_buffer[7]; | |
| 1229 signed_tword data; | |
| 1230 for(int i = 0; i<6;i++) | |
| 1231 read_buffer[i] = 0; | |
| 1232 buffer[0] = 0x00; // 03 = Data Output X MSB Register | |
| 1233 length = 1; | |
| 1234 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, buffer, length); | |
| 1235 length = 7; | |
| 1236 I2C_Master_Receive( DEVICE_ACCELARATOR_MMA8452Q, read_buffer, length); | |
| 1237 | |
| 1238 // status.uw = read_buffer[0]; | |
| 1239 data.Byte.hi = read_buffer[1]; | |
| 1240 data.Byte.low = read_buffer[2]; | |
| 1241 accel_DX_f =data.Word/16; | |
| 1242 data.Byte.hi = read_buffer[3]; | |
| 1243 data.Byte.low = read_buffer[4]; | |
| 1244 accel_DY_f =data.Word/16; | |
| 1245 data.Byte.hi = read_buffer[5]; | |
| 1246 data.Byte.low = read_buffer[6]; | |
| 1247 accel_DZ_f =data.Word/16; | |
| 1248 | |
| 1249 accel_DX_f *= -1; | |
| 1250 accel_DY_f *= -1; | |
| 1251 accel_DZ_f *= -1; | |
| 1252 } | |
| 1253 | |
| 1254 | |
| 1255 // =============================================================================== | |
| 1256 // compass_calc_roll_pitch_only | |
| 1257 /// @brief only the roll and pitch parts of compass_calc() | |
| 1258 /// | |
| 1259 /// input is accel_DX_f, accel_DY_f, accel_DZ_f | |
| 1260 /// output is compass_pitch and compass_roll | |
| 1261 // =============================================================================== | |
| 1262 void compass_calc_roll_pitch_only(void) | |
| 1263 { | |
| 1264 float sinPhi, cosPhi; | |
| 1265 float Phi, Teta; | |
| 1266 | |
| 1267 //---- Calculate sine and cosine of roll angle Phi ----------------------- | |
| 1268 Phi= atan2f(accel_DY_f, accel_DZ_f) ; | |
| 1269 compass_roll = Phi * 180.0f /PI; | |
| 1270 sinPhi = sinf(Phi); | |
| 1271 cosPhi = cosf(Phi); | |
| 1272 | |
| 1273 //---- calculate sin and cosine of pitch angle Theta --------------------- | |
| 1274 Teta = atanf(-(float)accel_DX_f/(accel_DY_f * sinPhi + accel_DZ_f * cosPhi)); | |
| 1275 compass_pitch = Teta * 180.0f /PI; | |
| 1276 } | |
| 1277 | |
| 1278 | |
| 1279 // =============================================================================== | |
| 1280 // compass_calc | |
| 1281 /// @brief all the fancy stuff first implemented in OSTC3 | |
| 1282 /// | |
| 1283 /// input is compass_DX_f, compass_DY_f, compass_DZ_f, accel_DX_f, accel_DY_f, accel_DZ_f | |
| 1284 /// and compass_CX_f, compass_CY_f, compass_CZ_f | |
| 1285 /// output is compass_heading, compass_pitch and compass_roll | |
| 1286 // =============================================================================== | |
| 1287 void compass_calc(void) | |
| 1288 { | |
| 1289 float sinPhi, cosPhi, sinTeta, cosTeta; | |
| 1290 float Phi, Teta, Psi; | |
| 1291 int16_t iBfx, iBfy; | |
| 1292 int16_t iBpx, iBpy, iBpz; | |
| 1293 | |
| 1294 //---- Make hard iron correction ----------------------------------------- | |
| 1295 // Measured magnetometer orientation, measured ok. | |
| 1296 // From matthias drawing: (X,Y,Z) --> (X,Y,Z) : no rotation. | |
| 1297 iBpx = compass_DX_f - compass_CX_f; // X | |
| 1298 iBpy = compass_DY_f - compass_CY_f; // Y | |
| 1299 iBpz = compass_DZ_f - compass_CZ_f; // Z | |
| 1300 | |
| 1301 //---- Calculate sine and cosine of roll angle Phi ----------------------- | |
| 1302 //sincos(accel_DZ_f, accel_DY_f, &sin, &cos); | |
| 1303 Phi= atan2f(accel_DY_f, accel_DZ_f) ; | |
| 1304 compass_roll = Phi * 180.0f /PI; | |
| 1305 sinPhi = sinf(Phi); | |
| 1306 cosPhi = cosf(Phi); | |
| 1307 | |
| 1308 //---- rotate by roll angle (-Phi) --------------------------------------- | |
| 1309 iBfy = iBpy * cosPhi - iBpz * sinPhi; | |
| 1310 iBpz = iBpy * sinPhi + iBpz * cosPhi; | |
| 1311 //Gz = imul(accel_DY_f, sin) + imul(accel_DZ_f, cos); | |
| 1312 | |
| 1313 //---- calculate sin and cosine of pitch angle Theta --------------------- | |
| 1314 //sincos(Gz, -accel_DX_f, &sin, &cos); // NOTE: changed sin sign. | |
| 1315 // Teta takes into account roll of computer and sends combination of Y and Z :-) understand now hw 160421 | |
| 1316 Teta = atanf(-(float)accel_DX_f/(accel_DY_f * sinPhi + accel_DZ_f * cosPhi)); | |
| 1317 compass_pitch = Teta * 180.0f /PI; | |
| 1318 sinTeta = sinf(Teta); | |
| 1319 cosTeta = cosf(Teta); | |
| 1320 /* correct cosine if pitch not in range -90 to 90 degrees */ | |
| 1321 if( cosTeta < 0 ) cosTeta = -cosTeta; | |
| 1322 | |
| 1323 ///---- de-rotate by pitch angle Theta ----------------------------------- | |
| 1324 iBfx = iBpx * cosTeta + iBpz * sinTeta; | |
| 1325 | |
| 1326 //---- Detect uncalibrated compass --------------------------------------- | |
| 1327 if( !compass_CX_f && !compass_CY_f && !compass_CZ_f ) | |
| 1328 { | |
| 1329 compass_heading = -1; | |
| 1330 return; | |
| 1331 } | |
| 1332 | |
| 1333 //---- calculate current yaw = e-compass angle Psi ----------------------- | |
| 1334 // Result in degree (no need of 0.01 deg precision... | |
| 1335 Psi = atan2f(-iBfy,iBfx); | |
| 1336 compass_heading = Psi * 180.0f /PI; | |
| 1337 // Result in 0..360 range: | |
| 1338 if( compass_heading < 0 ) | |
| 1339 compass_heading += 360; | |
| 1340 } | |
| 1341 | |
| 1342 | |
| 1343 /* | |
| 1344 // =============================================================================== | |
| 1345 // compass_calc_mini_during_calibration | |
| 1346 /// @brief all the fancy stuff first implemented in OSTC3 | |
| 1347 /// | |
| 1348 /// input is accel_DX_f, accel_DY_f, accel_DZ_f | |
| 1349 /// output is compass_pitch and compass_roll | |
| 1350 // =============================================================================== | |
| 1351 void compass_calc_mini_during_calibration(void) | |
| 1352 { | |
| 1353 float sinPhi, cosPhi; | |
| 1354 float Phi, Teta; | |
| 1355 | |
| 1356 //---- Calculate sine and cosine of roll angle Phi ----------------------- | |
| 1357 //sincos(accel_DZ_f, accel_DY_f, &sin, &cos); | |
| 1358 Phi= atan2f(accel_DY_f, accel_DZ_f) ; | |
| 1359 compass_roll = Phi * 180.0f /PI; | |
| 1360 sinPhi = sinf(Phi); | |
| 1361 cosPhi = cosf(Phi); | |
| 1362 | |
| 1363 //---- calculate sin and cosine of pitch angle Theta --------------------- | |
| 1364 //sincos(Gz, -accel_DX_f, &sin, &cos); // NOTE: changed sin sign. | |
| 1365 Teta = atanf(-(float)accel_DX_f/(accel_DY_f * sinPhi + accel_DZ_f * cosPhi)); | |
| 1366 compass_pitch = Teta * 180.0f /PI; | |
| 1367 } | |
| 1368 */ | |
| 1369 | |
| 1370 | |
| 1371 // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | |
| 1372 // // - Calibration - /////////////////////////////////////////////////////////////////////////////////////////////////////// | |
| 1373 // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | |
| 1374 | |
| 1375 /* can be lost during sleep as those are reset with compass_reset_calibration() */ | |
| 1376 | |
| 1377 // =============================================================================== | |
| 1378 // compass_reset_calibration | |
| 1379 /// @brief all the fancy stuff first implemented in OSTC3 | |
| 1380 /// | |
| 1381 /// output is struct g and compass_CX_f, compass_CY_f, compass_CZ_f | |
| 1382 /// | |
| 1383 /// @param g: is a struct with crazy stuff like Suuu, Svvv, Svvu, etc. | |
| 1384 /// all is set to zero here | |
| 1385 // =============================================================================== | |
| 1386 void compass_reset_calibration(SCompassCalib *g) | |
| 1387 { | |
| 1388 g->compass_N = 0; | |
| 1389 g->Su = g->Sv = g->Sw = 0.0; | |
| 1390 g->Suu = g->Svv = g->Sww = g->Suv = g->Suw = g->Svw = 0.0; | |
| 1391 g->Suuu = g->Svvv = g->Swww = 0.0; | |
| 1392 g->Suuv = g->Suuw = g->Svvu = g->Svvw = g->Swwu = g->Swwv = 0.0; | |
| 1393 compass_CX_f = compass_CY_f = compass_CZ_f = 0.0; | |
| 1394 } | |
| 1395 | |
| 1396 | |
| 1397 // =============================================================================== | |
| 1398 // compass_add_calibration | |
| 1399 /// @brief all the fancy stuff first implemented in OSTC3 | |
| 1400 /// | |
| 1401 /// input is compass_DX_f, compass_DY_f, compass_DZ_f | |
| 1402 /// and compass_CX_f, compass_CY_f, compass_CZ_f | |
| 1403 /// output is struct g | |
| 1404 /// | |
| 1405 /// @param g: is a struct with crazy stuff like Suuu, Svvv, Svvu, etc. | |
| 1406 // =============================================================================== | |
| 1407 void compass_add_calibration(SCompassCalib *g) | |
| 1408 { | |
| 1409 float u, v, w; | |
| 1410 | |
| 1411 u = (compass_DX_f - compass_CX_f) / 32768.0f; | |
| 1412 v = (compass_DY_f - compass_CY_f) / 32768.0f; | |
| 1413 w = (compass_DZ_f - compass_CZ_f) / 32768.0f; | |
| 1414 | |
| 1415 g->compass_N++; | |
| 1416 g->Su += u; | |
| 1417 g->Sv += v; | |
| 1418 g->Sw += w; | |
| 1419 g->Suv += u*v; | |
| 1420 g->Suw += u*w; | |
| 1421 g->Svw += v*w; | |
| 1422 g->Suu += u*u; | |
| 1423 g->Suuu += u*u*u; | |
| 1424 g->Suuv += v*u*u; | |
| 1425 g->Suuw += w*u*u; | |
| 1426 g->Svv += v*v; | |
| 1427 g->Svvv += v*v*v; | |
| 1428 g->Svvu += u*v*v; | |
| 1429 g->Svvw += w*v*v; | |
| 1430 g->Sww += w*w; | |
| 1431 g->Swww += w*w*w; | |
| 1432 g->Swwu += u*w*w; | |
| 1433 g->Swwv += v*w*w; | |
| 1434 } | |
| 1435 | |
| 1436 ////////////////////////////////////////////////////////////////////////////// | |
| 1437 | |
| 1438 // =============================================================================== | |
| 1439 // compass_solve_calibration | |
| 1440 /// @brief all the fancy stuff first implemented in OSTC3 | |
| 1441 /// | |
| 1442 /// input is compass_CX_f, compass_CY_f, compass_CZ_f and g | |
| 1443 /// output is struct g | |
| 1444 /// | |
| 1445 /// @param g: is a struct with crazy stuff like Suuu, Svvv, Svvu, etc. | |
| 1446 // =============================================================================== | |
| 1447 void compass_solve_calibration(SCompassCalib *g) | |
| 1448 { | |
| 1449 float yu, yv, yw; | |
| 1450 float delta; | |
| 1451 float uc, vc, wc; | |
| 1452 | |
| 1453 | |
| 1454 //---- Normalize partial sums -------------------------------------------- | |
| 1455 // | |
| 1456 // u, v, w should be centered on the mean value um, vm, wm: | |
| 1457 // x = u + um, with um = Sx/N | |
| 1458 // | |
| 1459 // So: | |
| 1460 // (u + um)**2 = u**2 + 2u*um + um**2 | |
| 1461 // Su = 0, um = Sx/N | |
| 1462 // Sxx = Suu + 2 um Su + N*(Sx/N)**2 = Suu + Sx**2/N | |
| 1463 // Suu = Sxx - Sx**2/N | |
| 1464 yu = g->Su/g->compass_N; | |
| 1465 yv = g->Sv/g->compass_N; | |
| 1466 yw = g->Sw/g->compass_N; | |
| 1467 | |
| 1468 g->Suu -= g->Su*yu; | |
| 1469 g->Svv -= g->Sv*yv; | |
| 1470 g->Sww -= g->Sw*yw; | |
| 1471 | |
| 1472 // (u + um)(v + vm) = uv + u vm + v um + um vm | |
| 1473 // Sxy = Suv + N * um vm | |
| 1474 // Suv = Sxy - N * (Sx/N)(Sy/N); | |
| 1475 g->Suv -= g->Su*yv; | |
| 1476 g->Suw -= g->Su*yw; | |
| 1477 g->Svw -= g->Sv*yw; | |
| 1478 | |
| 1479 // (u + um)**3 = u**3 + 3 u**2 um + 3 u um**2 + um**3 | |
| 1480 // Sxxx = Suuu + 3 um Suu + 3 um**2 Su + N.um**3 | |
| 1481 // Su = 0, um = Sx/N: | |
| 1482 // Suuu = Sxxx - 3 Sx*Suu/N - N.(Sx/N)**3 | |
| 1483 // = Sxxx - 3 Sx*Suu/N - Sx**3/N**2 | |
| 1484 | |
| 1485 // (u + um)**2 (v + vm) = (u**2 + 2 u um + um**2)(v + vm) | |
| 1486 // Sxxy = Suuv + vm Suu + 2 um (Suv + vm Su) + um**2 (Sv + N.vm) | |
| 1487 // | |
| 1488 // Su = 0, Sv = 0, vm = Sy/N: | |
| 1489 // Sxxy = Suuv + vm Suu + 2 um Suv + N um**2 vm | |
| 1490 // | |
| 1491 // Suuv = Sxxy - (Sy/N) Suu - 2 (Sx/N) Suv - (Sx/N)**2 Sy | |
| 1492 // = Sxxy - Suu*Sy/N - 2 Suv*Sx/N - Sx*Sx*Sy/N/N | |
| 1493 // = Sxxy - (Suu + Sx*Sx/N)*Sy/N - 2 Suv*Sx/N | |
| 1494 g->Suuu -= (3*g->Suu + g->Su*yu)*yu; | |
| 1495 g->Suuv -= (g->Suu + g->Su*yu)*yv + 2*g->Suv*yu; | |
| 1496 g->Suuw -= (g->Suu + g->Su*yu)*yw + 2*g->Suw*yu; | |
| 1497 | |
| 1498 g->Svvu -= (g->Svv + g->Sv*yv)*yu + 2*g->Suv*yv; | |
| 1499 g->Svvv -= (3*g->Svv + g->Sv*yv)*yv; | |
| 1500 g->Svvw -= (g->Svv + g->Sv*yv)*yw + 2*g->Svw*yv; | |
| 1501 | |
| 1502 g->Swwu -= (g->Sww + g->Sw*yw)*yu + 2*g->Suw*yw; | |
| 1503 g->Swwv -= (g->Sww + g->Sw*yw)*yv + 2*g->Svw*yw; | |
| 1504 g->Swww -= (3*g->Sww + g->Sw*yw)*yw; | |
| 1505 | |
| 1506 //---- Solve the system -------------------------------------------------- | |
| 1507 // uc Suu + vc Suv + wc Suw = (Suuu + Svvu + Swwu) / 2 | |
| 1508 // uc Suv + vc Svv + wc Svw = (Suuv + Svvv + Swwv) / 2 | |
| 1509 // uc Suw + vc Svw + wc Sww = (Suuw + Svvw + Swww) / 2 | |
| 1510 // Note this is symetric, with a positiv diagonal, hence | |
| 1511 // it always have a uniq solution. | |
| 1512 yu = 0.5f * (g->Suuu + g->Svvu + g->Swwu); | |
| 1513 yv = 0.5f * (g->Suuv + g->Svvv + g->Swwv); | |
| 1514 yw = 0.5f * (g->Suuw + g->Svvw + g->Swww); | |
| 1515 delta = g->Suu * (g->Svv * g->Sww - g->Svw * g->Svw) | |
| 1516 - g->Suv * (g->Suv * g->Sww - g->Svw * g->Suw) | |
| 1517 + g->Suw * (g->Suv * g->Svw - g->Svv * g->Suw); | |
| 1518 | |
| 1519 uc = (yu * (g->Svv * g->Sww - g->Svw * g->Svw) | |
| 1520 - yv * (g->Suv * g->Sww - g->Svw * g->Suw) | |
| 1521 + yw * (g->Suv * g->Svw - g->Svv * g->Suw) )/delta; | |
| 1522 vc = (g->Suu * ( yv * g->Sww - yw * g->Svw) | |
| 1523 - g->Suv * ( yu * g->Sww - yw * g->Suw) | |
| 1524 + g->Suw * ( yu * g->Svw - yv * g->Suw) )/delta; | |
| 1525 wc = (g->Suu * (g->Svv * yw - g->Svw * yv ) | |
| 1526 - g->Suv * (g->Suv * yw - g->Svw * yu ) | |
| 1527 + g->Suw * (g->Suv * yv - g->Svv * yu ) )/delta; | |
| 1528 | |
| 1529 // Back to uncentered coordinates: | |
| 1530 // xc = um + uc | |
| 1531 uc = g->Su/g->compass_N + compass_CX_f/32768.0f + uc; | |
| 1532 vc = g->Sv/g->compass_N + compass_CY_f/32768.0f + vc; | |
| 1533 wc = g->Sw/g->compass_N + compass_CZ_f/32768.0f + wc; | |
| 1534 | |
| 1535 // Then save the new calibrated center: | |
| 1536 compass_CX_f = (short)(32768 * uc); | |
| 1537 compass_CY_f = (short)(32768 * vc); | |
| 1538 compass_CZ_f = (short)(32768 * wc); | |
| 1539 } | |
| 1540 | |
| 1541 | |
| 1542 // =============================================================================== | |
| 1543 // compass_calib | |
| 1544 /// @brief the main loop for calibration | |
| 1545 /// output is compass_CX_f, compass_CY_f, compass_CZ_f and g | |
| 1546 /// 160704 removed -4096 limit for LSM303D | |
| 1547 /// | |
| 1548 /// @return always 0 | |
| 1549 // =============================================================================== | |
| 1550 int compass_calib_common(void) | |
| 1551 { | |
| 1552 SCompassCalib g; | |
| 1553 | |
| 1554 // Starts with no calibration at all: | |
| 1555 compass_reset_calibration(&g); | |
| 1556 | |
| 1557 int64_t tickstart = 0; | |
| 1558 uint32_t ticks = 0; | |
| 1559 uint32_t lasttick = 0; | |
| 1560 tickstart = HAL_GetTick(); | |
| 1561 // Eine Minute kalibrieren | |
| 1562 while((ticks) < 60 * 1000) | |
| 1563 { | |
| 1564 compass_read(); | |
| 1565 acceleration_read(); | |
| 1566 compass_calc_roll_pitch_only(); | |
| 1567 | |
| 1568 if((hardwareCompass == HMC5883L) | |
| 1569 &&((compass_DX_f == -4096) || | |
| 1570 (compass_DY_f == -4096) || | |
| 1571 (compass_DZ_f == -4096) )) | |
| 1572 { | |
| 1573 if(compass_gain == 0) | |
| 1574 return -1; | |
| 1575 compass_gain--; | |
| 1576 | |
| 1577 compass_init(1, compass_gain); | |
| 1578 compass_reset_calibration(&g); | |
| 1579 //tickstart = HAL_GetTick(); | |
| 1580 continue; | |
| 1581 } | |
| 1582 | |
| 1583 copyCompassDataDuringCalibration(compass_DX_f,compass_DY_f,compass_DZ_f); | |
| 104 | 1584 compass_add_calibration(&g); |
| 38 | 1585 HAL_Delay(1); |
| 1586 lasttick = HAL_GetTick(); | |
| 1587 if(lasttick == 0) | |
| 1588 { | |
| 1589 tickstart = -ticks; | |
| 1590 } | |
| 104 | 1591 HAL_Delay(1); |
| 38 | 1592 ticks = lasttick - tickstart; |
|
147
14e4c83a7559
Forward compass data during calibration mode
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104
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|
1593 SPI_Evaluate_RX_Data(); |
| 104 | 1594 } |
| 38 | 1595 |
| 1596 compass_solve_calibration(&g); | |
| 1597 | |
| 1598 tfull32 dataBlock[4]; | |
| 1599 dataBlock[0].Word16.low16 = compass_CX_f; | |
| 1600 dataBlock[0].Word16.hi16 = compass_CY_f; | |
| 1601 dataBlock[1].Word16.low16 = compass_CZ_f; | |
| 1602 dataBlock[1].Word16.hi16 = 0xFFFF; | |
| 1603 dataBlock[2].Full32 = 0x7FFFFFFF; | |
| 1604 dataBlock[3].Full32 = 0x7FFFFFFF; | |
| 1605 BFA_writeDataBlock((uint32_t *)dataBlock); | |
| 1606 | |
| 1607 return 0; | |
| 1608 } | |
| 1609 | |
| 1610 // //////////////////////////// TEST CODE ///////////////////////////////////// | |
| 1611 | |
| 1612 | |
| 1613 | |
| 1614 //#include <QtDebug> | |
| 1615 //#include <stdio.h> | |
| 1616 //#include <math.h> | |
| 1617 /*#include <stdlib.h> | |
| 1618 | |
| 1619 short compass_DX_f, compass_DY_f, compass_DZ_f; | |
| 1620 short compass_CX_f, compass_CY_f, compass_CZ_f; | |
| 1621 | |
| 1622 inline float uniform(void) { | |
| 1623 return (rand() & 0xFFFF) / 65536.0f; | |
| 1624 } | |
| 1625 inline float sqr(float x) { | |
| 1626 return x*x; | |
| 1627 } | |
| 1628 | |
| 1629 static const float radius = 0.21f; | |
| 1630 static const float cx = 0.79f, cy = -0.46f, cz = 0.24f; | |
| 1631 // const float cx = 0, cy = 0, cz = 0; | |
| 1632 | |
| 1633 float check_compass_calib(void) | |
| 1634 { | |
| 1635 | |
| 1636 // Starts with no calibration at all: | |
| 1637 compass_CX_f = compass_CY_f = compass_CZ_f = 0; | |
| 1638 | |
| 1639 // Try 10 recalibration passes: | |
| 1640 for(int p=0; p<10; ++p) | |
| 1641 { | |
| 1642 compass_reset_calibration(); | |
| 1643 | |
| 1644 //---- Generates random points on a sphere ------------------------------- | |
| 1645 // of radius,center (cx, cy, cz): | |
| 1646 for(int i=0; i<100; ++i) | |
| 1647 { | |
| 1648 float theta = uniform()*360.0f; | |
| 1649 float phi = uniform()*180.0f - 90.0f; | |
| 1650 | |
| 1651 float x = cx + radius * cosf(phi)*cosf(theta); | |
| 1652 float y = cy + radius * cosf(phi)*sinf(theta); | |
| 1653 float z = cz + radius * sinf(phi); | |
| 1654 | |
| 1655 compass_DX_f = (short)(32768 * x); | |
| 1656 compass_DY_f = (short)(32768 * y); | |
| 1657 compass_DZ_f = (short)(32768 * z); | |
| 1658 compass_add_calibration(); | |
| 1659 } | |
| 1660 | |
| 1661 compass_solve_calibration(); | |
| 1662 //qDebug() << "Center =" | |
| 1663 // << compass_CX_f/32768.0f | |
| 1664 // << compass_CY_f/32768.0f | |
| 1665 // << compass_CZ_f/32768.0f; | |
| 1666 | |
| 1667 float r2 = sqr(compass_CX_f/32768.0f - cx) | |
| 1668 + sqr(compass_CY_f/32768.0f - cy) | |
| 1669 + sqr(compass_CZ_f/32768.0f - cz); | |
| 1670 if( r2 > 0.01f*0.01f ) | |
| 1671 return sqrtf(r2); | |
| 1672 } | |
| 1673 return 0; | |
| 1674 }*/ | |
| 1675 | |
| 1676 | |
| 1677 | |
| 1678 /* | |
| 1679 void compass_read_LSM303D_v3(void) | |
| 1680 { | |
| 1681 uint8_t data; | |
| 1682 | |
| 1683 memset(magDataBuffer,0,6); | |
| 1684 | |
| 1685 compass_DX_f = 0; | |
| 1686 compass_DY_f = 0; | |
| 1687 compass_DZ_f = 0; | |
| 1688 | |
| 1689 //magnetometer multi read, order xl,xh, yl,yh, zl, zh | |
| 1690 data = REG_MAG_DATA_ADDR; | |
| 1691 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 1692 I2C_Master_Receive( DEVICE_COMPASS_303D, magDataBuffer, 6); | |
| 1693 | |
| 1694 compass_DX_f = ((int16_t)( (int16_t)((magDataBuffer[1] << 8) | (magDataBuffer[0])))); | |
| 1695 compass_DY_f = ((int16_t)( (int16_t)((magDataBuffer[3] << 8) | (magDataBuffer[2])))); | |
| 1696 compass_DZ_f = ((int16_t)( (int16_t)((magDataBuffer[5] << 8) | (magDataBuffer[4])))); | |
| 1697 | |
| 1698 // compass_DX_f = compass_DX_f * stat->sensitivity_mag; | |
| 1699 // compass_DY_f = compass_DY_f * stat->sensitivity_mag; | |
| 1700 // compass_DZ_f = compass_DZ_f * stat->sensitivity_mag; | |
| 1701 } | |
| 1702 | |
| 1703 | |
| 1704 // =============================================================================== | |
| 1705 // compass_init_LSM303D by STMicroelectronics 2013 V1.0.5 2013/Oct/23 | |
| 1706 /// @brief The new ST 303D | |
| 1707 /// This might be called several times with different gain values during calibration | |
| 1708 /// | |
| 1709 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
| 1710 // =============================================================================== | |
| 1711 | |
| 1712 void compass_init_LSM303D_v3(uint8_t gain) | |
| 1713 { | |
| 1714 uint8_t data[10]; | |
| 1715 | |
| 1716 // CNTRL1 | |
| 1717 // 0011 acceleration data rate 0011 = 12.5 Hz (3.125 Hz - 1600 Hz) | |
| 1718 // 0xxx block data update off | |
| 1719 // x111 enable all three axes | |
| 1720 | |
| 1721 // CNTRL5 | |
| 1722 // 0xxx xxxx temp sensor off | |
| 1723 // x00x xxxx magnetic resolution | |
| 1724 // xxx0 1xxx magentic data rate 01 = 6,25 Hz (3.125 Hz - 50 Hz (100 Hz)) | |
| 1725 // xxxx xx00 latch irq requests off | |
| 1726 | |
| 1727 // CNTRL7 | |
| 1728 // 00xx high pass filter mode, 00 normal mode | |
| 1729 // xx0x filter for acceleration data bypassed | |
| 1730 // xxx0 temperature sensor mode only off | |
| 1731 // x0xx magnetic data low-power mode off | |
| 1732 // xx00 magnetic sensor mode 00 = continous-conversion mode (default 10 power-down) | |
| 1733 | |
| 1734 data[0] = CNTRL0; | |
| 1735 data[1] = 0x00; | |
| 1736 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 2); | |
| 1737 | |
| 1738 // acc | |
| 1739 data[0] = CNTRL1; | |
| 1740 data[1] = 0x00; | |
| 1741 data[2] = 0x0F; | |
| 1742 data[3] = 0x00; | |
| 1743 data[4] = 0x00; | |
| 1744 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 5); | |
| 1745 | |
| 1746 // mag | |
| 1747 data[0] = CNTRL3; | |
| 1748 data[1] = 0x00; | |
| 1749 data[2] = 0x00; | |
| 1750 data[3] = 0x18; | |
| 1751 data[4] = 0x20; | |
| 1752 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 5); | |
| 1753 | |
| 1754 data[0] = CNTRL7; | |
| 1755 data[1] = ((MSMS_MASK & CONTINUOS_CONVERSION) | | |
| 1756 ((~MSMS_MASK) & CNTRL7_RESUME_VALUE)); | |
| 1757 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 2); | |
| 1758 | |
| 1759 HAL_Delay(100); | |
| 1760 } | |
| 1761 | |
| 1762 | |
| 1763 // =============================================================================== | |
| 1764 // compass_init_LSM303D by nordevx for arduion | |
| 1765 /// @brief The new ST 303D | |
| 1766 /// This might be called several times with different gain values during calibration | |
| 1767 /// | |
| 1768 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
| 1769 // =============================================================================== | |
| 1770 void compass_init_LSM303D_v2(uint8_t gain) | |
| 1771 { | |
| 1772 uint8_t data[2]; | |
| 1773 | |
| 1774 // CNTRL1 | |
| 1775 // 0011 acceleration data rate 0011 = 12.5 Hz (3.125 Hz - 1600 Hz) | |
| 1776 // 0xxx block data update off | |
| 1777 // x111 enable all three axes | |
| 1778 | |
| 1779 // CNTRL5 | |
| 1780 // 0xxx xxxx temp sensor off | |
| 1781 // x00x xxxx magnetic resolution | |
| 1782 // xxx0 1xxx magentic data rate 01 = 6,25 Hz (3.125 Hz - 50 Hz (100 Hz)) | |
| 1783 // xxxx xx00 latch irq requests off | |
| 1784 | |
| 1785 // CNTRL7 | |
| 1786 // 00xx high pass filter mode, 00 normal mode | |
| 1787 // xx0x filter for acceleration data bypassed | |
| 1788 // xxx0 temperature sensor mode only off | |
| 1789 // x0xx magnetic data low-power mode off | |
| 1790 // xx00 magnetic sensor mode 00 = continous-conversion mode (default 10 power-down) | |
| 1791 | |
| 1792 data[0] = CNTRL1; | |
| 1793 data[1] = 0x37; //0b 0011 0111 | |
| 1794 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 2); | |
| 1795 | |
| 1796 data[0] = CNTRL5; | |
| 1797 data[1] = 0x08; // 0b 0000 1000 | |
| 1798 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 2); | |
| 1799 | |
| 1800 data[0] = CNTRL7; | |
| 1801 data[1] = 0x00; // 0b 0000 0000 | |
| 1802 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 2); | |
| 1803 | |
| 1804 HAL_Delay(100); | |
| 1805 } | |
| 1806 | |
| 1807 | |
| 1808 // =============================================================================== | |
| 1809 // compass_init_LSM303D_v1 by ST lsm303d.c | |
| 1810 /// @brief The new ST 303D | |
| 1811 /// This might be called several times with different gain values during calibration | |
| 1812 /// | |
| 1813 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
| 1814 // =============================================================================== | |
| 1815 void compass_init_LSM303D_v1(uint8_t gain) | |
| 1816 { | |
| 1817 uint8_t data; | |
| 1818 | |
| 1819 compass_gain = gain; | |
| 1820 | |
| 1821 memset(magDataBuffer,0,6); | |
| 1822 memset(accDataBuffer,0,6); | |
| 1823 | |
| 1824 data = CNTRL5; | |
| 1825 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 1826 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
| 1827 data = (data & 0x1c) >> 2; | |
| 1828 velMag = magODR[data]; | |
| 1829 | |
| 1830 data = CNTRL1; | |
| 1831 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 1832 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
| 1833 data = (data & 0xf0) >> 4; | |
| 1834 velAcc = accODR[data]; | |
| 1835 | |
| 1836 data = CNTRL7; | |
| 1837 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 1838 I2C_Master_Receive( DEVICE_COMPASS_303D, &datas1, 1); | |
| 1839 datas1 = (datas1 & 0x02); | |
| 1840 | |
| 1841 //if mag is not pd | |
| 1842 //mag is bigger than gyro | |
| 1843 if( (velMag < velAcc) || datas1 != 0 ) { | |
| 1844 //acc is the biggest | |
| 1845 fastest = ACC_IS_FASTEST; | |
| 1846 } | |
| 1847 else { | |
| 1848 //acc is the biggest | |
| 1849 fastest = MAG_IS_FASTEST; | |
| 1850 } | |
| 1851 | |
| 1852 zoffFlag = 1; | |
| 1853 | |
| 1854 if( fastest == MAG_IS_FASTEST) | |
| 1855 { | |
| 1856 data = STATUS_REG_M; | |
| 1857 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 1858 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
| 1859 | |
| 1860 // if(ValBit(data, ZYXMDA)) { | |
| 1861 sendFlag = 1; | |
| 1862 // } | |
| 1863 | |
| 1864 } | |
| 1865 else if(fastest == ACC_IS_FASTEST) | |
| 1866 { | |
| 1867 data = STATUS_REG_A; | |
| 1868 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 1869 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
| 1870 // if(ValBit(data, DATAREADY_BIT)) { | |
| 1871 sendFlag = 1; | |
| 1872 // } | |
| 1873 } | |
| 1874 } | |
| 1875 | |
| 1876 // =============================================================================== | |
| 1877 // compass_read_LSM303D | |
| 1878 /// @brief The new LSM303D :-) | |
| 1879 /// | |
| 1880 /// output is compass_DX_f, compass_DY_f, compass_DZ_f, accel_DX_f, accel_DY_f, accel_DZ_f | |
| 1881 // =============================================================================== | |
| 1882 void compass_read_LSM303D_v2(void) | |
| 1883 { | |
| 1884 uint8_t data; | |
| 1885 | |
| 1886 memset(magDataBuffer,0,6); | |
| 1887 memset(accDataBuffer,0,6); | |
| 1888 | |
| 1889 compass_DX_f = 0; | |
| 1890 compass_DY_f = 0; | |
| 1891 compass_DZ_f = 0; | |
| 1892 | |
| 1893 accel_DX_f = 0; | |
| 1894 accel_DY_f = 0; | |
| 1895 accel_DZ_f = 0; | |
| 1896 | |
| 1897 //Accelerometer multi read, order xl,xh, yl,yh, zl, zh | |
| 1898 data = REG_ACC_DATA_ADDR; | |
| 1899 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 1900 I2C_Master_Receive( DEVICE_COMPASS_303D, accDataBuffer, 6); | |
| 1901 | |
| 1902 //magnetometer multi read, order xl,xh, yl,yh, zl, zh | |
| 1903 data = OUT_X_L_M; | |
| 1904 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
| 1905 I2C_Master_Receive( DEVICE_COMPASS_303D, magDataBuffer, 6); | |
| 1906 | |
| 1907 accel_DX_f = ((int16_t)( (int16_t)((accDataBuffer[1] << 8) | (accDataBuffer[0])))); | |
| 1908 accel_DY_f = ((int16_t)( (int16_t)((accDataBuffer[3] << 8) | (accDataBuffer[2])))); | |
| 1909 accel_DZ_f = ((int16_t)( (int16_t)((accDataBuffer[5] << 8) | (accDataBuffer[4])))); | |
| 1910 | |
| 1911 // accel_DX_f = accel_DX_f * stat->sensitivity_acc; | |
| 1912 // accel_DY_f = accel_DY_f * stat->sensitivity_acc; | |
| 1913 // accel_DZ_f = accel_DZ_f * stat->sensitivity_acc; | |
| 1914 | |
| 1915 | |
| 1916 compass_DX_f = magDataBuffer[1]; | |
| 1917 compass_DX_f *= 256; | |
| 1918 compass_DX_f += magDataBuffer[0]; | |
| 1919 | |
| 1920 compass_DY_f = magDataBuffer[3]; | |
| 1921 compass_DY_f *= 256; | |
| 1922 compass_DY_f += magDataBuffer[2]; | |
| 1923 | |
| 1924 compass_DY_f = magDataBuffer[5]; | |
| 1925 compass_DY_f *= 256; | |
| 1926 compass_DY_f += magDataBuffer[4]; | |
| 1927 | |
| 1928 } | |
| 1929 | |
| 1930 | |
| 1931 */ | |
| 1932 |