Mercurial > public > ostc4
annotate Small_CPU/Src/compass.c @ 535:666cafac87ab
Increased max value for surface pressure:
During unusal wetter conditions air pressure at sea level gone up to 1050 hPa causing the display to clip to 1030 hPa.
Set max value to 1060 hPa to avoid a stable display of 1030 hPa over several days.
author | Ideenmodellierer |
---|---|
date | Wed, 07 Oct 2020 17:12:44 +0200 |
parents | d9dbfa496f7e |
children | 573a2bc796c8 |
rev | line source |
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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 | |
410
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42 extern uint32_t time_elapsed_ms(uint32_t ticksstart,uint32_t ticksnow); |
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43 |
38 | 44 /// split byte to bits |
45 typedef struct{ | |
46 uint8_t bit0:1; ///< split byte to bits | |
47 uint8_t bit1:1; ///< split byte to bits | |
48 uint8_t bit2:1; ///< split byte to bits | |
49 uint8_t bit3:1; ///< split byte to bits | |
50 uint8_t bit4:1; ///< split byte to bits | |
51 uint8_t bit5:1; ///< split byte to bits | |
52 uint8_t bit6:1; ///< split byte to bits | |
53 uint8_t bit7:1; ///< split byte to bits | |
54 } ubit8_t; | |
55 | |
56 | |
57 /// split byte to bits | |
58 typedef union{ | |
59 ubit8_t ub; ///< split byte to bits | |
60 uint8_t uw; ///< split byte to bits | |
61 } bit8_Type; | |
62 | |
63 | |
64 /// split word to 2 bytes | |
65 typedef struct{ | |
66 uint8_t low; ///< split word to 2 bytes | |
67 uint8_t hi; ///< split word to 2 bytes | |
68 } two_byte; | |
69 | |
70 | |
71 /// split word to 2 bytes | |
72 typedef union{ | |
73 two_byte Byte; ///< split word to 2 bytes | |
74 uint16_t Word; ///< split word to 2 bytes | |
75 } tword; | |
76 | |
77 | |
78 /// split signed word to 2 bytes | |
79 typedef union{ | |
80 two_byte Byte; ///< split signed word to 2 bytes | |
81 int16_t Word; ///< split signed word to 2 bytes | |
82 } signed_tword; | |
83 | |
84 | |
85 /// split full32 to 2 words | |
86 typedef struct{ | |
87 uint16_t low16; ///< split word to 2 bytes | |
88 uint16_t hi16; ///< split word to 2 bytes | |
89 } two_word; | |
90 | |
91 typedef union{ | |
92 two_word Word16; ///< split word to 2 bytes | |
93 uint32_t Full32; ///< split word to 2 bytes | |
94 } tfull32; | |
95 | |
96 | |
97 /// crazy compass calibration stuff | |
98 typedef struct | |
99 { | |
100 unsigned short int compass_N; | |
101 float Su, Sv, Sw; | |
102 float Suu, Svv, Sww, Suv, Suw, Svw; | |
103 float Suuu, Svvv, Swww; | |
104 float Suuv, Suuw, Svvu, Svvw, Swwu, Swwv; | |
105 } SCompassCalib; | |
106 | |
107 | |
108 #define Q_PI (18000) | |
109 #define Q_PIO2 (9000) | |
110 | |
111 | |
112 | |
113 ////////////////////////////////////////////////////////////////////////////// | |
114 // fifth order of polynomial approximation of atan(), giving 0.05 deg max error | |
115 // | |
116 #define K1 (5701) // Needs K1/2**16 | |
117 #define K2 (1645) // Needs K2/2**48 WAS NEGATIV | |
118 #define K3 ( 446) // Needs K3/2**80 | |
119 | |
120 const float PI = 3.14159265; ///< pi, used in compass_calc() | |
121 | |
122 typedef short int Int16; | |
123 typedef signed char Int8; | |
124 typedef Int16 Angle; | |
125 | |
126 | |
127 /// The (filtered) components of the magnetometer sensor | |
128 int16_t compass_DX_f; ///< output from sensor | |
129 int16_t compass_DY_f; ///< output from sensor | |
130 int16_t compass_DZ_f; ///< output from sensor | |
131 | |
132 | |
133 /// Found soft-iron calibration values, deduced from already filtered values | |
134 int16_t compass_CX_f; ///< calibration value | |
135 int16_t compass_CY_f; ///< calibration value | |
136 int16_t compass_CZ_f; ///< calibration value | |
137 | |
138 | |
139 /// The (filtered) components of the accelerometer sensor | |
140 int16_t accel_DX_f; ///< output from sensor | |
141 int16_t accel_DY_f; ///< output from sensor | |
142 int16_t accel_DZ_f; ///< output from sensor | |
143 | |
144 | |
145 /// The compass result values | |
146 float compass_heading; ///< the final result calculated in compass_calc() | |
147 float compass_roll; ///< the final result calculated in compass_calc() | |
148 float compass_pitch; ///< the final result calculated in compass_calc() | |
149 | |
150 | |
151 uint8_t compass_gain; ///< 7 on start, can be reduced during calibration | |
152 | |
357 | 153 uint8_t hardwareCompass = 0; ///< either HMC5883L (=1) or LSM303D (=2) or LSM303AGR (=3) or not defined yet (=0) |
38 | 154 |
155 /// LSM303D variables | |
156 uint8_t magDataBuffer[6]; ///< here raw data from LSM303D is stored, can be local | |
157 uint8_t accDataBuffer[6]; ///< here raw data from LSM303D is stored, can be local | |
158 | |
159 | |
160 // struct accel_scale _accel_scale; | |
161 unsigned _accel_range_m_s2; | |
162 float _accel_range_scale; | |
163 unsigned _accel_samplerate; | |
164 unsigned _accel_onchip_filter_bandwith; | |
165 | |
166 // struct mag_scale _mag_scale; | |
167 unsigned _mag_range_ga; | |
168 float _mag_range_scale; | |
169 unsigned _mag_samplerate; | |
170 | |
171 // default scale factors | |
172 float _accel_scale_x_offset = 0.0f; | |
173 float _accel_scale_x_scale = 1.0f; | |
174 float _accel_scale_y_offset = 0.0f; | |
175 float _accel_scale_y_scale = 1.0f; | |
176 float _accel_scale_z_offset = 0.0f; | |
177 float _accel_scale_z_scale = 1.0f; | |
178 | |
179 float _mag_scale_x_offset = 0.0f; | |
180 float _mag_scale_x_scale = 1.0f; | |
181 float _mag_scale_y_offset = 0.0f; | |
182 float _mag_scale_y_scale = 1.0f; | |
183 float _mag_scale_z_offset = 0.0f; | |
184 float _mag_scale_z_scale = 1.0f; | |
185 | |
186 | |
187 /* External function prototypes ----------------------------------------------*/ | |
188 | |
189 extern void copyCompassDataDuringCalibration(int16_t dx, int16_t dy, int16_t dz); | |
190 | |
191 /* Private function prototypes -----------------------------------------------*/ | |
192 | |
193 void compass_reset_calibration(SCompassCalib *g); | |
194 void compass_add_calibration(SCompassCalib *g); | |
195 void compass_solve_calibration(SCompassCalib *g); | |
196 | |
197 void compass_init_HMC5883L(uint8_t fast, uint8_t gain); | |
198 void compass_sleep_HMC5883L(void); | |
199 void compass_read_HMC5883L(void); | |
200 | |
201 void accelerator_init_MMA8452Q(void); | |
202 void accelerator_sleep_MMA8452Q(void); | |
203 void acceleration_read_MMA8452Q(void); | |
204 | |
205 void compass_init_LSM303D(uint8_t fast, uint8_t gain); | |
206 void compass_sleep_LSM303D(void); | |
207 void compass_read_LSM303D(void); | |
208 void acceleration_read_LSM303D(void); | |
209 | |
357 | 210 void compass_init_LSM303AGR(uint8_t fast, uint8_t gain); |
211 void compass_sleep_LSM303AGR(void); | |
212 void compass_read_LSM303AGR(void); | |
213 void acceleration_read_LSM303AGR(void); | |
214 | |
38 | 215 int LSM303D_accel_set_onchip_lowpass_filter_bandwidth(unsigned bandwidth); |
216 int compass_calib_common(void); | |
217 | |
218 void compass_calc_roll_pitch_only(void); | |
219 | |
220 void rotate_mag_3f(float *x, float *y, float *z); | |
221 void rotate_accel_3f(float *x, float *y, float *z); | |
222 | |
223 | |
224 /* Exported functions --------------------------------------------------------*/ | |
225 | |
226 | |
227 // =============================================================================== | |
228 // compass_init | |
229 /// @brief This might be called several times with different gain values during calibration | |
230 /// On first call it figures out which hardware is integrated | |
231 /// | |
232 /// @param gain: 7 is max gain, compass_calib() might reduce it | |
233 // =============================================================================== | |
234 | |
235 void compass_init(uint8_t fast, uint8_t gain) | |
236 { | |
237 | |
238 // don't call again with fast, gain in calib mode etc. | |
239 // if unknown | |
240 if(hardwareCompass == COMPASS_NOT_RECOGNIZED) | |
241 { | |
242 return; | |
243 } | |
244 | |
245 // old code but without else | |
246 if(hardwareCompass == 0) | |
247 { | |
248 uint8_t data = WHO_AM_I; | |
249 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
250 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
357 | 251 if(data == WHOIAM_VALUE_LSM303D) |
252 hardwareCompass = compass_generation2; //LSM303D; | |
358 | 253 data = WHO_AM_I; |
254 I2C_Master_Transmit( DEVICE_ACCELARATOR_303AGR, &data, 1); | |
255 I2C_Master_Receive( DEVICE_ACCELARATOR_303AGR, &data, 1); | |
357 | 256 if(data == WHOIAM_VALUE_LSM303AGR) |
257 hardwareCompass = compass_generation3; //LSM303AGR; | |
38 | 258 } |
259 | |
180 | 260 /* No compass identified => Retry */ |
38 | 261 if(hardwareCompass == 0) |
262 { | |
514
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263 I2C_DeInit(); |
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264 HAL_Delay(100); |
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265 MX_I2C1_Init(); |
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266 HAL_Delay(100); |
38 | 267 uint8_t data = WHO_AM_I; |
268 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
269 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
357 | 270 if(data == WHOIAM_VALUE_LSM303D) |
271 hardwareCompass = compass_generation2; //LSM303D; | |
358 | 272 data = WHO_AM_I; |
273 I2C_Master_Transmit( DEVICE_ACCELARATOR_303AGR, &data, 1); | |
274 I2C_Master_Receive( DEVICE_ACCELARATOR_303AGR, &data, 1); | |
357 | 275 if(data == WHOIAM_VALUE_LSM303AGR) |
276 hardwareCompass = compass_generation3; //LSM303AGR; | |
38 | 277 } |
70 | 278 |
180 | 279 /* Assume that a HMC5883L is equipped by default if detection still failed */ |
38 | 280 if(hardwareCompass == 0) |
357 | 281 hardwareCompass = compass_generation1; //HMC5883L; |
38 | 282 |
283 HAL_StatusTypeDef resultOfOperationHMC_MMA = HAL_TIMEOUT; | |
284 | |
358 | 285 // test if both chips of the two-chip solution (gen 1) are present |
357 | 286 if(hardwareCompass == compass_generation1) // HMC5883L) |
38 | 287 { |
488
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288 HAL_Delay(100); |
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289 I2C_DeInit(); |
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290 HAL_Delay(100); |
358 | 291 MX_I2C1_Init(); |
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292 HAL_Delay(100); |
38 | 293 uint8_t data = 0x2A; // CTRL_REG1 of DEVICE_ACCELARATOR_MMA8452Q |
294 resultOfOperationHMC_MMA = I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, &data, 1); | |
295 if(resultOfOperationHMC_MMA == HAL_OK) | |
296 { | |
357 | 297 hardwareCompass = compass_generation1; //HMC5883L; // all fine, keep it |
38 | 298 } |
299 else | |
300 { | |
301 hardwareCompass = COMPASS_NOT_RECOGNIZED; | |
302 } | |
303 } | |
304 | |
357 | 305 if(hardwareCompass == compass_generation2) //LSM303D) |
38 | 306 compass_init_LSM303D(fast, gain); |
357 | 307 if(hardwareCompass == compass_generation3) //LSM303AGR) |
308 compass_init_LSM303AGR(fast, gain); | |
309 if(hardwareCompass == compass_generation1) //HMC5883L) | |
38 | 310 compass_init_HMC5883L(fast, gain); |
311 | |
357 | 312 tfull32 dataBlock[4]; |
313 if(BFA_readLastDataBlock((uint32_t *)dataBlock) == BFA_OK) | |
38 | 314 { |
315 compass_CX_f = dataBlock[0].Word16.low16; | |
316 compass_CY_f = dataBlock[0].Word16.hi16; | |
317 compass_CZ_f = dataBlock[1].Word16.low16; | |
318 } | |
319 | |
320 } | |
321 | |
322 | |
323 // =============================================================================== | |
324 // compass_calib | |
325 /// @brief with onchip_lowpass_filter configuration for accelerometer of LSM303D | |
326 // =============================================================================== | |
327 int compass_calib(void) | |
328 { | |
357 | 329 if(hardwareCompass == compass_generation2) //LSM303D) |
38 | 330 { |
331 LSM303D_accel_set_onchip_lowpass_filter_bandwidth(773); | |
332 int out = compass_calib_common(); | |
333 LSM303D_accel_set_onchip_lowpass_filter_bandwidth(LSM303D_ACCEL_DEFAULT_ONCHIP_FILTER_FREQ); | |
334 return out; | |
335 } | |
336 else | |
357 | 337 if(hardwareCompass == compass_generation1) //HMC5883L) |
338 { | |
339 return compass_calib_common(); | |
340 } | |
341 else | |
342 if(hardwareCompass == compass_generation3) //LSM303AGR) | |
38 | 343 { |
344 return compass_calib_common(); | |
345 } | |
346 else | |
347 { | |
348 return 0; // standard answer of compass_calib_common(); | |
349 } | |
350 | |
351 | |
352 } | |
353 | |
354 | |
355 // =============================================================================== | |
356 // compass_sleep | |
357 /// @brief low power mode | |
358 // =============================================================================== | |
359 void compass_sleep(void) | |
360 { | |
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361 if(hardwareCompass == compass_generation2) //LSM303D |
38 | 362 compass_sleep_LSM303D(); |
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363 if(hardwareCompass == compass_generation1) //HMC5883L |
38 | 364 compass_sleep_HMC5883L(); |
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365 if(hardwareCompass == compass_generation3) //LSM303AGR |
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366 compass_sleep_LSM303AGR(); |
38 | 367 } |
368 | |
369 | |
370 // =============================================================================== | |
371 // compass_read | |
372 /// @brief reads magnetometer and accelerometer for LSM303D, | |
373 /// otherwise magnetometer only | |
374 // =============================================================================== | |
375 void compass_read(void) | |
376 { | |
357 | 377 if(hardwareCompass == compass_generation2) //LSM303D) |
38 | 378 compass_read_LSM303D(); |
357 | 379 if(hardwareCompass == compass_generation1) //HMC5883L) |
38 | 380 compass_read_HMC5883L(); |
357 | 381 if(hardwareCompass == compass_generation3) //LSM303AGR) |
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382 compass_read_LSM303AGR(); |
357 | 383 |
38 | 384 } |
385 | |
386 | |
387 // =============================================================================== | |
388 // accelerator_init | |
389 /// @brief empty for for LSM303D | |
390 // =============================================================================== | |
391 void accelerator_init(void) | |
392 { | |
357 | 393 if(hardwareCompass == compass_generation1) //HMC5883L) |
38 | 394 accelerator_init_MMA8452Q(); |
395 } | |
396 | |
397 | |
398 // =============================================================================== | |
399 // accelerator_sleep | |
400 /// @brief empty for for LSM303D | |
401 // =============================================================================== | |
402 void accelerator_sleep(void) | |
403 { | |
357 | 404 if(hardwareCompass == compass_generation1) //HMC5883L) |
38 | 405 accelerator_sleep_MMA8452Q(); |
406 } | |
407 | |
408 | |
409 // =============================================================================== | |
410 // acceleration_read | |
411 /// @brief empty for for LSM303D | |
412 // =============================================================================== | |
413 void acceleration_read(void) | |
414 { | |
357 | 415 if(hardwareCompass == compass_generation2) //LSM303D) |
38 | 416 acceleration_read_LSM303D(); |
357 | 417 if(hardwareCompass == compass_generation1) //HMC5883L) |
38 | 418 acceleration_read_MMA8452Q(); |
357 | 419 if(hardwareCompass == compass_generation3) //LSM303AGR) |
420 acceleration_read_LSM303AGR(); | |
38 | 421 } |
422 | |
423 | |
424 /* Private functions ---------------------------------------------------------*/ | |
425 | |
426 // =============================================================================== | |
357 | 427 // LSM303AGR_read_reg |
428 // =============================================================================== | |
429 uint8_t LSM303AGR_read_reg(uint8_t addr) | |
430 { | |
431 uint8_t data; | |
432 | |
433 I2C_Master_Transmit( DEVICE_COMPASS_303AGR, &addr, 1); | |
434 I2C_Master_Receive( DEVICE_COMPASS_303AGR, &data, 1); | |
435 return data; | |
436 } | |
437 | |
438 | |
439 // =============================================================================== | |
440 // LSM303AGR_write_reg | |
441 // =============================================================================== | |
442 void LSM303AGR_write_reg(uint8_t addr, uint8_t value) | |
443 { | |
444 uint8_t data[2]; | |
445 | |
446 data[0] = addr; | |
447 data[1] = value; | |
448 I2C_Master_Transmit( DEVICE_COMPASS_303AGR, data, 2); | |
449 } | |
450 | |
451 // =============================================================================== | |
452 // LSM303AGR_acc_write_reg | |
453 // =============================================================================== | |
454 void LSM303AGR_acc_write_reg(uint8_t addr, uint8_t value) | |
455 { | |
456 uint8_t data[2]; | |
457 | |
458 data[0] = addr; | |
459 data[1] = value; | |
460 I2C_Master_Transmit( DEVICE_ACCELARATOR_303AGR, data, 2); | |
461 } | |
462 | |
463 | |
464 // =============================================================================== | |
465 // LSM303AGR_write_checked_reg | |
466 // =============================================================================== | |
467 void LSM303AGR_write_checked_reg(uint8_t addr, uint8_t value) | |
468 { | |
469 LSM303AGR_write_reg(addr, value); | |
470 } | |
471 | |
472 // =============================================================================== | |
473 // LSM303AGR_acc_write_checked_reg | |
474 // =============================================================================== | |
475 void LSM303AGR_acc_write_checked_reg(uint8_t addr, uint8_t value) | |
476 { | |
477 LSM303AGR_acc_write_reg(addr, value); | |
478 } | |
479 | |
480 // =============================================================================== | |
38 | 481 // LSM303D_read_reg |
482 // =============================================================================== | |
483 uint8_t LSM303D_read_reg(uint8_t addr) | |
484 { | |
485 uint8_t data; | |
486 | |
487 I2C_Master_Transmit( DEVICE_COMPASS_303D, &addr, 1); | |
488 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
489 return data; | |
490 } | |
491 | |
492 | |
493 // =============================================================================== | |
494 // LSM303D_write_reg | |
495 // =============================================================================== | |
496 void LSM303D_write_reg(uint8_t addr, uint8_t value) | |
497 { | |
498 uint8_t data[2]; | |
499 | |
500 /* enable accel*/ | |
501 data[0] = addr; | |
502 data[1] = value; | |
503 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 2); | |
504 } | |
505 | |
506 | |
507 // =============================================================================== | |
508 // LSM303D_write_checked_reg | |
509 // =============================================================================== | |
510 void LSM303D_write_checked_reg(uint8_t addr, uint8_t value) | |
511 { | |
512 LSM303D_write_reg(addr, value); | |
513 } | |
514 | |
515 | |
516 // =============================================================================== | |
517 // LSM303D_modify_reg | |
518 // =============================================================================== | |
519 void LSM303D_modify_reg(unsigned reg, uint8_t clearbits, uint8_t setbits) | |
520 { | |
521 uint8_t val; | |
522 | |
523 val = LSM303D_read_reg(reg); | |
524 val &= ~clearbits; | |
525 val |= setbits; | |
526 LSM303D_write_checked_reg(reg, val); | |
527 } | |
528 | |
529 // =============================================================================== | |
530 // LSM303D_accel_set_onchip_lowpass_filter_bandwidth | |
531 // =============================================================================== | |
532 int LSM303D_accel_set_onchip_lowpass_filter_bandwidth(unsigned bandwidth) | |
533 { | |
534 uint8_t setbits = 0; | |
535 uint8_t clearbits = REG2_ANTIALIAS_FILTER_BW_BITS_A; | |
536 | |
537 if (bandwidth == 0) { | |
538 bandwidth = 773; | |
539 } | |
540 | |
541 if (bandwidth <= 50) { | |
542 setbits |= REG2_AA_FILTER_BW_50HZ_A; | |
543 _accel_onchip_filter_bandwith = 50; | |
544 | |
545 } else if (bandwidth <= 194) { | |
546 setbits |= REG2_AA_FILTER_BW_194HZ_A; | |
547 _accel_onchip_filter_bandwith = 194; | |
548 | |
549 } else if (bandwidth <= 362) { | |
550 setbits |= REG2_AA_FILTER_BW_362HZ_A; | |
551 _accel_onchip_filter_bandwith = 362; | |
552 | |
553 } else if (bandwidth <= 773) { | |
554 setbits |= REG2_AA_FILTER_BW_773HZ_A; | |
555 _accel_onchip_filter_bandwith = 773; | |
556 | |
557 } else { | |
558 return -1; | |
559 } | |
560 | |
561 LSM303D_modify_reg(ADDR_CTRL_REG2, clearbits, setbits); | |
562 | |
563 return 0; | |
564 } | |
565 | |
566 | |
567 // =============================================================================== | |
568 // LSM303D_accel_set_driver_lowpass_filter | |
569 // =============================================================================== | |
570 int LSM303D_accel_set_driver_lowpass_filter(float samplerate, float bandwidth) | |
571 { | |
572 /* | |
573 _accel_filter_x_set_cutoff_frequency(samplerate, bandwidth); | |
574 _accel_filter_y_set_cutoff_frequency(samplerate, bandwidth); | |
575 _accel_filter_z_set_cutoff_frequency(samplerate, bandwidth); | |
576 */ | |
577 return 0; | |
578 } | |
579 | |
580 | |
581 // rotate_mag_3f: nicht genutzt aber praktisch; rotate_accel_3f wird benutzt | |
582 // =============================================================================== | |
583 // rotate_mag_3f | |
584 /// @brief swap axis in convient way, by hw | |
585 /// @param *x raw input is set to *y input | |
586 /// @param *y raw input is set to -*x input | |
587 /// @param *z raw is not touched | |
588 // =============================================================================== | |
589 void rotate_mag_3f(float *x, float *y, float *z) | |
590 { | |
591 return; | |
592 /* | |
593 *x = *x; // HMC: *x = -*y | |
594 *y = *y; // HMC: *y = *x // change 20.04.2016: zuvor *y = -*y | |
595 *z = *z; // HMC: *z = *z | |
596 */ | |
597 } | |
598 | |
599 | |
600 // =============================================================================== | |
601 // rotate_accel_3f | |
602 /// @brief swap axis in convient way, by hw, same as MMA8452Q | |
603 /// @param *x raw input, output is with sign change | |
604 /// @param *y raw input, output is with sign change | |
605 /// @param *z raw input, output is with sign change | |
606 // =============================================================================== | |
607 void rotate_accel_3f(float *x, float *y, float *z) | |
608 { | |
609 *x = -*x; | |
610 *y = -*y; | |
611 *z = -*z; | |
612 /* tested: | |
613 x = x, y =-y, z=-z: does not work with roll | |
614 x = x, y =y, z=-z: does not work with pitch | |
615 x = x, y =y, z=z: does not work at all | |
616 */ | |
617 } | |
618 | |
619 | |
620 // =============================================================================== | |
357 | 621 // compass_init_LSM303D |
38 | 622 /// This might be called several times with different gain values during calibration |
623 /// but gain change is not supported at the moment. | |
624 /// | |
625 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
626 // =============================================================================== | |
627 | |
628 //uint8_t testCompassLS303D[11]; | |
629 | |
630 void compass_init_LSM303D(uint8_t fast, uint8_t gain) | |
631 { | |
632 if(fast == 0) | |
633 { | |
634 LSM303D_write_checked_reg(ADDR_CTRL_REG0, 0x00); | |
635 LSM303D_write_checked_reg(ADDR_CTRL_REG1, 0x3F); // mod 12,5 Hz 3 instead of 6,25 Hz 2 | |
636 LSM303D_write_checked_reg(ADDR_CTRL_REG2, 0xC0); | |
637 LSM303D_write_checked_reg(ADDR_CTRL_REG3, 0x00); | |
638 LSM303D_write_checked_reg(ADDR_CTRL_REG4, 0x00); | |
639 LSM303D_write_checked_reg(ADDR_CTRL_REG5, 0x68); // mod 12,5 Hz 8 instead of 6,25 Hz 4 | |
640 } | |
641 else | |
642 { | |
643 LSM303D_write_checked_reg(ADDR_CTRL_REG0, 0x00); | |
644 LSM303D_write_checked_reg(ADDR_CTRL_REG1, 0x6F); // 100 Hz | |
645 LSM303D_write_checked_reg(ADDR_CTRL_REG2, 0xC0); | |
646 LSM303D_write_checked_reg(ADDR_CTRL_REG3, 0x00); | |
647 LSM303D_write_checked_reg(ADDR_CTRL_REG4, 0x00); | |
648 LSM303D_write_checked_reg(ADDR_CTRL_REG5, 0x74); // 100 Hz | |
649 } | |
650 LSM303D_write_checked_reg(ADDR_CTRL_REG6, 0x00); | |
651 LSM303D_write_checked_reg(ADDR_CTRL_REG7, 0x00); | |
652 | |
653 return; | |
654 } | |
655 | |
656 | |
657 // =============================================================================== | |
658 // compass_sleep_LSM303D | |
357 | 659 // @brief Gen 2 chip |
38 | 660 // =============================================================================== |
661 void compass_sleep_LSM303D(void) | |
662 { | |
663 LSM303D_write_checked_reg(ADDR_CTRL_REG1, 0x00); // CNTRL1: acceleration sensor Power-down mode | |
664 LSM303D_write_checked_reg(ADDR_CTRL_REG7, 0x02); // CNTRL7: magnetic sensor Power-down mode | |
665 } | |
666 | |
667 | |
668 // =============================================================================== | |
669 // acceleration_read_LSM303D | |
357 | 670 // output is accel_DX_f, accel_DY_f, accel_DZ_f |
38 | 671 // =============================================================================== |
672 void acceleration_read_LSM303D(void) | |
673 { | |
674 uint8_t data; | |
675 float xraw_f, yraw_f, zraw_f; | |
676 float accel_report_x, accel_report_y, accel_report_z; | |
677 | |
678 memset(accDataBuffer,0,6); | |
679 | |
680 accel_DX_f = 0; | |
681 accel_DY_f = 0; | |
682 accel_DZ_f = 0; | |
683 | |
684 for(int i=0;i<6;i++) | |
685 { | |
686 data = ADDR_OUT_X_L_A + i; | |
687 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
688 I2C_Master_Receive( DEVICE_COMPASS_303D, &accDataBuffer[i], 1); | |
689 } | |
690 | |
691 xraw_f = ((float)( (int16_t)((accDataBuffer[1] << 8) | (accDataBuffer[0])))); | |
692 yraw_f = ((float)( (int16_t)((accDataBuffer[3] << 8) | (accDataBuffer[2])))); | |
693 zraw_f = ((float)( (int16_t)((accDataBuffer[5] << 8) | (accDataBuffer[4])))); | |
694 | |
695 rotate_accel_3f(&xraw_f, &yraw_f, &zraw_f); | |
696 | |
697 // mh | |
698 accel_report_x = xraw_f; | |
699 accel_report_y = yraw_f; | |
700 accel_report_z = zraw_f; | |
701 | |
702 accel_DX_f = ((int16_t)(accel_report_x)); | |
703 accel_DY_f = ((int16_t)(accel_report_y)); | |
704 accel_DZ_f = ((int16_t)(accel_report_z)); | |
705 } | |
706 | |
707 | |
708 // =============================================================================== | |
709 // compass_read_LSM303D | |
710 /// | |
711 /// output is compass_DX_f, compass_DY_f, compass_DZ_f | |
712 // =============================================================================== | |
713 void compass_read_LSM303D(void) | |
714 { | |
715 uint8_t data; | |
716 // float xraw_f, yraw_f, zraw_f; | |
717 // float mag_report_x, mag_report_y, mag_report_z; | |
718 | |
719 memset(magDataBuffer,0,6); | |
720 | |
721 compass_DX_f = 0; | |
722 compass_DY_f = 0; | |
723 compass_DZ_f = 0; | |
724 | |
725 for(int i=0;i<6;i++) | |
726 { | |
727 data = ADDR_OUT_X_L_M + i; | |
728 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
729 I2C_Master_Receive( DEVICE_COMPASS_303D, &magDataBuffer[i], 1); | |
730 } | |
731 | |
732 // mh 160620 flip x and y if flip display | |
733 compass_DX_f = (((int16_t)((magDataBuffer[1] << 8) | (magDataBuffer[0])))); | |
734 compass_DY_f = (((int16_t)((magDataBuffer[3] << 8) | (magDataBuffer[2])))); | |
735 compass_DZ_f = (((int16_t)((magDataBuffer[5] << 8) | (magDataBuffer[4])))); | |
736 // no rotation | |
737 return; | |
357 | 738 } |
739 | |
740 | |
741 // =============================================================================== | |
742 // compass_init_LSM303AGR | |
743 /// This might be called several times with different gain values during calibration | |
744 /// but gain change is not supported at the moment. | |
745 /// | |
746 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
747 // =============================================================================== | |
38 | 748 |
357 | 749 void compass_init_LSM303AGR(uint8_t fast, uint8_t gain) |
750 { | |
751 if(fast == 0) | |
752 { | |
358 | 753 // init compass |
357 | 754 LSM303AGR_write_checked_reg(0x60, 0x80); // 10Hz |
755 LSM303AGR_write_checked_reg(0x61, 0x03); // CFG_REG_B_M | |
756 LSM303AGR_write_checked_reg(0x62, 0x10); // CFG_REG_C_M | |
358 | 757 LSM303AGR_write_checked_reg(0x63, 0x00); // INT_CTRL_REG_M |
758 | |
759 // init accel (Same chip, but different address...) | |
760 LSM303AGR_acc_write_checked_reg(0x1F, 0x00); // TEMP_CFG_REG_A (Temp sensor off) | |
761 LSM303AGR_acc_write_checked_reg(0x20, 0x4F); // CTRL_REG1_A (50Hz, x,y,z = ON) | |
762 LSM303AGR_acc_write_checked_reg(0x21, 0x00); // CTRL_REG2_A | |
763 LSM303AGR_acc_write_checked_reg(0x22, 0x00); // CTRL_REG3_A | |
764 LSM303AGR_acc_write_checked_reg(0x23, 0x08); // CTRL_REG4_A, High Resolution Mode enabled | |
357 | 765 } |
766 else | |
767 { | |
358 | 768 // init compass |
769 LSM303AGR_write_checked_reg(0x60, 0x84); // 20Hz | |
357 | 770 LSM303AGR_write_checked_reg(0x61, 0x03); // CFG_REG_B_M |
771 LSM303AGR_write_checked_reg(0x62, 0x10); // CFG_REG_C_M | |
358 | 772 LSM303AGR_write_checked_reg(0x63, 0x00); // INT_CTRL_REG_M |
773 | |
774 // init accel (Same chip, but different address...) | |
775 LSM303AGR_acc_write_checked_reg(0x1F, 0x00); // TEMP_CFG_REG_A (Temp sensor off) | |
776 LSM303AGR_acc_write_checked_reg(0x20, 0x4F); // CTRL_REG1_A (50Hz, x,y,z = ON) | |
777 LSM303AGR_acc_write_checked_reg(0x21, 0x00); // CTRL_REG2_A | |
778 LSM303AGR_acc_write_checked_reg(0x22, 0x00); // CTRL_REG3_A | |
779 LSM303AGR_acc_write_checked_reg(0x23, 0x0); // CTRL_REG4_A, High Resolution Mode enabled | |
357 | 780 } |
781 | |
782 return; | |
783 } | |
784 | |
785 | |
786 // =============================================================================== | |
787 // compass_sleep_LSM303D | |
788 // @brief Gen 2 chip | |
789 // =============================================================================== | |
790 void compass_sleep_LSM303AGR(void) | |
791 { | |
792 LSM303AGR_write_checked_reg(0x60, 0x03); // | |
793 LSM303AGR_write_checked_reg(0x61, 0x04); // | |
794 LSM303AGR_write_checked_reg(0x62, 0x51); // | |
795 LSM303AGR_write_checked_reg(0x63, 0x00); // | |
796 | |
797 | |
798 LSM303AGR_acc_write_checked_reg(0x1F, 0x00); // | |
799 LSM303AGR_acc_write_checked_reg(0x20, 0x00); // | |
800 } | |
801 | |
38 | 802 |
357 | 803 // =============================================================================== |
804 // acceleration_read_LSM303AGR | |
805 // output is accel_DX_f, accel_DY_f, accel_DZ_f | |
806 // =============================================================================== | |
807 void acceleration_read_LSM303AGR(void) | |
808 { | |
809 uint8_t data; | |
810 float xraw_f, yraw_f, zraw_f; | |
811 float accel_report_x, accel_report_y, accel_report_z; | |
812 | |
813 memset(accDataBuffer,0,6); | |
814 | |
815 accel_DX_f = 0; | |
816 accel_DY_f = 0; | |
817 accel_DZ_f = 0; | |
818 | |
819 for(int i=0;i<6;i++) | |
820 { | |
358 | 821 data = 0x28 + i; // OUT_X_L_A |
357 | 822 I2C_Master_Transmit( DEVICE_ACCELARATOR_303AGR, &data, 1); |
823 I2C_Master_Receive( DEVICE_ACCELARATOR_303AGR, &accDataBuffer[i], 1); | |
824 } | |
825 | |
826 xraw_f = ((float)( (int16_t)((accDataBuffer[1] << 8) | (accDataBuffer[0])))); | |
827 yraw_f = ((float)( (int16_t)((accDataBuffer[3] << 8) | (accDataBuffer[2])))); | |
828 zraw_f = ((float)( (int16_t)((accDataBuffer[5] << 8) | (accDataBuffer[4])))); | |
829 | |
830 rotate_accel_3f(&xraw_f, &yraw_f, &zraw_f); | |
831 | |
832 // mh | |
833 accel_report_x = xraw_f; | |
834 accel_report_y = yraw_f; | |
358 | 835 accel_report_z = -zraw_f; // flip Z in gen 2 hardware |
357 | 836 |
837 accel_DX_f = ((int16_t)(accel_report_x)); | |
838 accel_DY_f = ((int16_t)(accel_report_y)); | |
839 accel_DZ_f = ((int16_t)(accel_report_z)); | |
840 } | |
841 | |
842 | |
843 // =============================================================================== | |
844 // compass_read_LSM303AGR | |
845 /// | |
846 /// output is compass_DX_f, compass_DY_f, compass_DZ_f | |
847 // =============================================================================== | |
848 void compass_read_LSM303AGR(void) | |
849 { | |
850 uint8_t data; | |
851 // float xraw_f, yraw_f, zraw_f; | |
852 // float mag_report_x, mag_report_y, mag_report_z; | |
853 | |
854 memset(magDataBuffer,0,6); | |
855 | |
856 compass_DX_f = 0; | |
857 compass_DY_f = 0; | |
858 compass_DZ_f = 0; | |
859 | |
860 for(int i=0;i<6;i++) | |
861 { | |
862 data = 0x68 + i; // OUTX_L_REG_M | |
863 I2C_Master_Transmit( DEVICE_COMPASS_303AGR, &data, 1); | |
864 I2C_Master_Receive( DEVICE_COMPASS_303AGR, &magDataBuffer[i], 1); | |
865 } | |
866 | |
867 // mh 160620 flip x and y if flip display | |
868 compass_DX_f = (((int16_t)((magDataBuffer[1] << 8) | (magDataBuffer[0])))); | |
869 compass_DY_f = (((int16_t)((magDataBuffer[3] << 8) | (magDataBuffer[2])))); | |
870 compass_DZ_f = (((int16_t)((magDataBuffer[5] << 8) | (magDataBuffer[4])))); | |
358 | 871 |
872 // align axis in gen 2 hardware | |
873 compass_DZ_f *= -1; | |
874 | |
357 | 875 return; |
38 | 876 } |
877 | |
878 | |
879 // -------------------------------------------------------------------------------- | |
880 // ----------EARLIER COMPONENTS --------------------------------------------------- | |
881 // -------------------------------------------------------------------------------- | |
882 | |
883 // =============================================================================== | |
884 // compass_init_HMC5883L | |
885 /// @brief The horrible Honeywell compass chip | |
886 /// This might be called several times during calibration | |
887 /// | |
888 /// @param fast: 1 is fast mode, 0 is normal mode | |
889 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
890 // =============================================================================== | |
891 void compass_init_HMC5883L(uint8_t fast, uint8_t gain) | |
892 { | |
893 uint8_t write_buffer[4]; | |
894 | |
895 compass_gain = gain; | |
896 uint16_t length = 0; | |
897 write_buffer[0] = 0x00; // 00 = config Register A | |
898 | |
899 if( fast ) | |
900 write_buffer[1] = 0x38; // 0b 0011 1000; // ConfigA: 75Hz, 2 Samples averaged | |
901 else | |
902 write_buffer[1] = 0x68; // 0b 0110 1000; // ConfigA: 3Hz, 8 Samples averaged | |
903 | |
904 switch(gain) | |
905 { | |
906 case 7: | |
907 write_buffer[2] = 0xE0; //0b 1110 0000; // ConfigB: gain | |
908 break; | |
909 case 6: | |
910 write_buffer[2] = 0xC0; //0b 1100 0000; // ConfigB: gain | |
911 break; | |
912 case 5: | |
913 write_buffer[2] = 0xA0; //0b 1010 0000; // ConfigB: gain | |
914 break; | |
915 case 4: | |
916 write_buffer[2] = 0x80; //0b 1000 0000; // ConfigB: gain | |
917 break; | |
918 case 3: | |
919 write_buffer[2] = 0x60; //0b 0110 0000; // ConfigB: gain | |
920 break; | |
921 case 2: | |
922 write_buffer[2] = 0x40; //0b 01000 0000; // ConfigB: gain | |
923 break; | |
924 case 1: | |
925 write_buffer[2] = 0x20; //0b 00100 0000; // ConfigB: gain | |
926 break; | |
927 case 0: | |
928 write_buffer[2] = 0x00; //0b 00000 0000; // ConfigB: gain | |
929 break; | |
930 } | |
931 write_buffer[3] = 0x00; // Mode: continuous mode | |
932 length = 4; | |
933 //hmc_twi_write(0); | |
934 I2C_Master_Transmit( DEVICE_COMPASS_HMC5883L, write_buffer, length); | |
935 } | |
936 | |
937 | |
938 | |
939 // =============================================================================== | |
940 // compass_sleep_HMC5883L | |
941 /// @brief Power-down mode for Honeywell compass chip | |
942 // =============================================================================== | |
943 void compass_sleep_HMC5883L(void) | |
944 { | |
945 uint8_t write_buffer[4]; | |
946 uint16_t length = 0; | |
947 | |
948 write_buffer[0] = 0x00; // 00 = config Register A | |
949 write_buffer[1] = 0x68; // 0b 0110 1000; // ConfigA | |
950 write_buffer[2] = 0x20; // 0b 0010 0000; // ConfigB | |
951 write_buffer[3] = 0x02; // 0b 0000 0010; // Idle Mode | |
952 length = 4; | |
953 I2C_Master_Transmit( DEVICE_COMPASS_HMC5883L, write_buffer, length); | |
954 } | |
955 | |
956 | |
957 // =============================================================================== | |
958 // accelerator_init_MMA8452Q | |
959 /// @brief Power-down mode for acceleration chip used in combination with Honeywell compass | |
960 // =============================================================================== | |
961 void accelerator_init_MMA8452Q(void) | |
962 { | |
963 uint8_t write_buffer[4]; | |
964 uint16_t length = 0; | |
965 //HAL_Delay(1); | |
966 //return; | |
967 write_buffer[0] = 0x0E; // XYZ_DATA_CFG | |
968 write_buffer[1] = 0x00;//0b00000000; // High pass Filter=0 , +/- 2g range | |
969 length = 2; | |
970 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
971 //HAL_Delay(1); | |
972 write_buffer[0] = 0x2A; // CTRL_REG1 | |
973 write_buffer[1] = 0x34; //0b00110100; // CTRL_REG1: 160ms data rate, St.By Mode, reduced noise mode | |
974 write_buffer[2] = 0x02; //0b00000010; // CTRL_REG2: High Res in Active mode | |
975 length = 3; | |
976 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
977 | |
978 //HAL_Delay(1); | |
979 //hw_delay_us(100); | |
980 write_buffer[0] = 0x2A; // CTRL_REG1 | |
981 write_buffer[1] = 0x35; //0b00110101; // CTRL_REG1: ... Active Mode | |
982 length = 2; | |
983 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
984 /* | |
985 HAL_Delay(6); | |
986 compass_read(); | |
987 HAL_Delay(1); | |
988 acceleration_read(); | |
989 | |
990 compass_calc(); | |
991 */ | |
992 } | |
993 | |
994 | |
995 // =============================================================================== | |
996 // accelerator_sleep_MMA8452Q | |
997 /// @brief compass_sleep_HMC5883L | |
998 // =============================================================================== | |
999 void accelerator_sleep_MMA8452Q(void) | |
1000 { | |
1001 uint16_t length = 0; | |
1002 uint8_t write_buffer[4]; | |
1003 | |
1004 write_buffer[0] = 0x2A; // CTRL_REG1 | |
1005 write_buffer[1] = 0x00; //0b00000000; // CTRL_REG1: Standby Mode | |
1006 length = 2; | |
1007 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
1008 } | |
1009 | |
1010 | |
1011 // =============================================================================== | |
1012 // compass_read_HMC5883L | |
1013 /// @brief The new ST 303D - get ALL data and store in static variables | |
1014 /// | |
1015 /// output is compass_DX_f, compass_DY_f, compass_DZ_f | |
1016 // =============================================================================== | |
1017 void compass_read_HMC5883L(void) | |
1018 { | |
1019 uint8_t buffer[20]; | |
1020 compass_DX_f = 0; | |
1021 compass_DY_f = 0; | |
1022 compass_DZ_f = 0; | |
1023 uint8_t length = 0; | |
1024 uint8_t read_buffer[6]; | |
1025 signed_tword data; | |
1026 for(int i = 0; i<6;i++) | |
1027 read_buffer[i] = 0; | |
1028 buffer[0] = 0x03; // 03 = Data Output X MSB Register | |
1029 length = 1; | |
1030 I2C_Master_Transmit( DEVICE_COMPASS_HMC5883L, buffer, length); | |
1031 length = 6; | |
1032 I2C_Master_Receive( DEVICE_COMPASS_HMC5883L, read_buffer, length); | |
1033 | |
1034 | |
1035 data.Byte.hi = read_buffer[0]; | |
1036 data.Byte.low = read_buffer[1]; | |
1037 //Y = Z | |
1038 compass_DY_f = - data.Word; | |
1039 | |
1040 data.Byte.hi = read_buffer[2]; | |
1041 data.Byte.low = read_buffer[3]; | |
1042 compass_DZ_f = data.Word; | |
1043 | |
1044 data.Byte.hi = read_buffer[4]; | |
1045 data.Byte.low = read_buffer[5]; | |
1046 //X = -Y | |
1047 compass_DX_f = data.Word; | |
1048 } | |
1049 | |
1050 | |
1051 // =============================================================================== | |
1052 // acceleration_read_MMA8452Q | |
1053 /// @brief The old MMA8452Q used with the Honeywell compass | |
1054 /// get the acceleration data and store in static variables | |
1055 /// | |
1056 /// output is accel_DX_f, accel_DY_f, accel_DZ_f | |
1057 // =============================================================================== | |
1058 void acceleration_read_MMA8452Q(void) | |
1059 { | |
1060 uint8_t buffer[20]; | |
1061 accel_DX_f = 0; | |
1062 accel_DY_f = 0; | |
1063 accel_DZ_f = 0; | |
1064 uint8_t length = 0; | |
1065 // bit8_Type status ; | |
1066 uint8_t read_buffer[7]; | |
1067 signed_tword data; | |
1068 for(int i = 0; i<6;i++) | |
1069 read_buffer[i] = 0; | |
1070 buffer[0] = 0x00; // 03 = Data Output X MSB Register | |
1071 length = 1; | |
1072 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, buffer, length); | |
1073 length = 7; | |
1074 I2C_Master_Receive( DEVICE_ACCELARATOR_MMA8452Q, read_buffer, length); | |
1075 | |
1076 // status.uw = read_buffer[0]; | |
1077 data.Byte.hi = read_buffer[1]; | |
1078 data.Byte.low = read_buffer[2]; | |
1079 accel_DX_f =data.Word/16; | |
1080 data.Byte.hi = read_buffer[3]; | |
1081 data.Byte.low = read_buffer[4]; | |
1082 accel_DY_f =data.Word/16; | |
1083 data.Byte.hi = read_buffer[5]; | |
1084 data.Byte.low = read_buffer[6]; | |
1085 accel_DZ_f =data.Word/16; | |
1086 | |
1087 accel_DX_f *= -1; | |
1088 accel_DY_f *= -1; | |
1089 accel_DZ_f *= -1; | |
1090 } | |
1091 | |
1092 | |
1093 // =============================================================================== | |
1094 // compass_calc_roll_pitch_only | |
1095 /// @brief only the roll and pitch parts of compass_calc() | |
1096 /// | |
1097 /// input is accel_DX_f, accel_DY_f, accel_DZ_f | |
1098 /// output is compass_pitch and compass_roll | |
1099 // =============================================================================== | |
1100 void compass_calc_roll_pitch_only(void) | |
1101 { | |
1102 float sinPhi, cosPhi; | |
1103 float Phi, Teta; | |
1104 | |
1105 //---- Calculate sine and cosine of roll angle Phi ----------------------- | |
1106 Phi= atan2f(accel_DY_f, accel_DZ_f) ; | |
1107 compass_roll = Phi * 180.0f /PI; | |
1108 sinPhi = sinf(Phi); | |
1109 cosPhi = cosf(Phi); | |
1110 | |
1111 //---- calculate sin and cosine of pitch angle Theta --------------------- | |
1112 Teta = atanf(-(float)accel_DX_f/(accel_DY_f * sinPhi + accel_DZ_f * cosPhi)); | |
1113 compass_pitch = Teta * 180.0f /PI; | |
1114 } | |
1115 | |
1116 | |
1117 // =============================================================================== | |
1118 // compass_calc | |
1119 /// @brief all the fancy stuff first implemented in OSTC3 | |
1120 /// | |
1121 /// input is compass_DX_f, compass_DY_f, compass_DZ_f, accel_DX_f, accel_DY_f, accel_DZ_f | |
1122 /// and compass_CX_f, compass_CY_f, compass_CZ_f | |
1123 /// output is compass_heading, compass_pitch and compass_roll | |
1124 // =============================================================================== | |
1125 void compass_calc(void) | |
1126 { | |
1127 float sinPhi, cosPhi, sinTeta, cosTeta; | |
1128 float Phi, Teta, Psi; | |
1129 int16_t iBfx, iBfy; | |
1130 int16_t iBpx, iBpy, iBpz; | |
1131 | |
1132 //---- Make hard iron correction ----------------------------------------- | |
1133 // Measured magnetometer orientation, measured ok. | |
1134 // From matthias drawing: (X,Y,Z) --> (X,Y,Z) : no rotation. | |
1135 iBpx = compass_DX_f - compass_CX_f; // X | |
1136 iBpy = compass_DY_f - compass_CY_f; // Y | |
1137 iBpz = compass_DZ_f - compass_CZ_f; // Z | |
1138 | |
1139 //---- Calculate sine and cosine of roll angle Phi ----------------------- | |
1140 //sincos(accel_DZ_f, accel_DY_f, &sin, &cos); | |
1141 Phi= atan2f(accel_DY_f, accel_DZ_f) ; | |
1142 compass_roll = Phi * 180.0f /PI; | |
1143 sinPhi = sinf(Phi); | |
1144 cosPhi = cosf(Phi); | |
1145 | |
1146 //---- rotate by roll angle (-Phi) --------------------------------------- | |
1147 iBfy = iBpy * cosPhi - iBpz * sinPhi; | |
1148 iBpz = iBpy * sinPhi + iBpz * cosPhi; | |
1149 //Gz = imul(accel_DY_f, sin) + imul(accel_DZ_f, cos); | |
1150 | |
1151 //---- calculate sin and cosine of pitch angle Theta --------------------- | |
1152 //sincos(Gz, -accel_DX_f, &sin, &cos); // NOTE: changed sin sign. | |
1153 // Teta takes into account roll of computer and sends combination of Y and Z :-) understand now hw 160421 | |
1154 Teta = atanf(-(float)accel_DX_f/(accel_DY_f * sinPhi + accel_DZ_f * cosPhi)); | |
1155 compass_pitch = Teta * 180.0f /PI; | |
1156 sinTeta = sinf(Teta); | |
1157 cosTeta = cosf(Teta); | |
1158 /* correct cosine if pitch not in range -90 to 90 degrees */ | |
1159 if( cosTeta < 0 ) cosTeta = -cosTeta; | |
1160 | |
1161 ///---- de-rotate by pitch angle Theta ----------------------------------- | |
1162 iBfx = iBpx * cosTeta + iBpz * sinTeta; | |
1163 | |
1164 //---- Detect uncalibrated compass --------------------------------------- | |
1165 if( !compass_CX_f && !compass_CY_f && !compass_CZ_f ) | |
1166 { | |
1167 compass_heading = -1; | |
1168 return; | |
1169 } | |
1170 | |
1171 //---- calculate current yaw = e-compass angle Psi ----------------------- | |
1172 // Result in degree (no need of 0.01 deg precision... | |
1173 Psi = atan2f(-iBfy,iBfx); | |
1174 compass_heading = Psi * 180.0f /PI; | |
1175 // Result in 0..360 range: | |
1176 if( compass_heading < 0 ) | |
1177 compass_heading += 360; | |
1178 } | |
1179 | |
1180 | |
1181 // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | |
1182 // // - Calibration - /////////////////////////////////////////////////////////////////////////////////////////////////////// | |
1183 // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | |
1184 | |
1185 /* can be lost during sleep as those are reset with compass_reset_calibration() */ | |
1186 | |
1187 // =============================================================================== | |
1188 // compass_reset_calibration | |
1189 /// @brief all the fancy stuff first implemented in OSTC3 | |
1190 /// | |
1191 /// output is struct g and compass_CX_f, compass_CY_f, compass_CZ_f | |
1192 /// | |
1193 /// @param g: is a struct with crazy stuff like Suuu, Svvv, Svvu, etc. | |
1194 /// all is set to zero here | |
1195 // =============================================================================== | |
1196 void compass_reset_calibration(SCompassCalib *g) | |
1197 { | |
1198 g->compass_N = 0; | |
1199 g->Su = g->Sv = g->Sw = 0.0; | |
1200 g->Suu = g->Svv = g->Sww = g->Suv = g->Suw = g->Svw = 0.0; | |
1201 g->Suuu = g->Svvv = g->Swww = 0.0; | |
1202 g->Suuv = g->Suuw = g->Svvu = g->Svvw = g->Swwu = g->Swwv = 0.0; | |
1203 compass_CX_f = compass_CY_f = compass_CZ_f = 0.0; | |
1204 } | |
1205 | |
1206 | |
1207 // =============================================================================== | |
1208 // compass_add_calibration | |
1209 /// @brief all the fancy stuff first implemented in OSTC3 | |
1210 /// | |
1211 /// input is compass_DX_f, compass_DY_f, compass_DZ_f | |
1212 /// and compass_CX_f, compass_CY_f, compass_CZ_f | |
1213 /// output is struct g | |
1214 /// | |
1215 /// @param g: is a struct with crazy stuff like Suuu, Svvv, Svvu, etc. | |
1216 // =============================================================================== | |
1217 void compass_add_calibration(SCompassCalib *g) | |
1218 { | |
1219 float u, v, w; | |
1220 | |
1221 u = (compass_DX_f - compass_CX_f) / 32768.0f; | |
1222 v = (compass_DY_f - compass_CY_f) / 32768.0f; | |
1223 w = (compass_DZ_f - compass_CZ_f) / 32768.0f; | |
1224 | |
1225 g->compass_N++; | |
1226 g->Su += u; | |
1227 g->Sv += v; | |
1228 g->Sw += w; | |
1229 g->Suv += u*v; | |
1230 g->Suw += u*w; | |
1231 g->Svw += v*w; | |
1232 g->Suu += u*u; | |
1233 g->Suuu += u*u*u; | |
1234 g->Suuv += v*u*u; | |
1235 g->Suuw += w*u*u; | |
1236 g->Svv += v*v; | |
1237 g->Svvv += v*v*v; | |
1238 g->Svvu += u*v*v; | |
1239 g->Svvw += w*v*v; | |
1240 g->Sww += w*w; | |
1241 g->Swww += w*w*w; | |
1242 g->Swwu += u*w*w; | |
1243 g->Swwv += v*w*w; | |
1244 } | |
1245 | |
1246 ////////////////////////////////////////////////////////////////////////////// | |
1247 | |
1248 // =============================================================================== | |
1249 // compass_solve_calibration | |
1250 /// @brief all the fancy stuff first implemented in OSTC3 | |
1251 /// | |
1252 /// input is compass_CX_f, compass_CY_f, compass_CZ_f and g | |
1253 /// output is struct g | |
1254 /// | |
1255 /// @param g: is a struct with crazy stuff like Suuu, Svvv, Svvu, etc. | |
1256 // =============================================================================== | |
1257 void compass_solve_calibration(SCompassCalib *g) | |
1258 { | |
1259 float yu, yv, yw; | |
1260 float delta; | |
1261 float uc, vc, wc; | |
1262 | |
1263 | |
1264 //---- Normalize partial sums -------------------------------------------- | |
1265 // | |
1266 // u, v, w should be centered on the mean value um, vm, wm: | |
1267 // x = u + um, with um = Sx/N | |
1268 // | |
1269 // So: | |
1270 // (u + um)**2 = u**2 + 2u*um + um**2 | |
1271 // Su = 0, um = Sx/N | |
1272 // Sxx = Suu + 2 um Su + N*(Sx/N)**2 = Suu + Sx**2/N | |
1273 // Suu = Sxx - Sx**2/N | |
1274 yu = g->Su/g->compass_N; | |
1275 yv = g->Sv/g->compass_N; | |
1276 yw = g->Sw/g->compass_N; | |
1277 | |
1278 g->Suu -= g->Su*yu; | |
1279 g->Svv -= g->Sv*yv; | |
1280 g->Sww -= g->Sw*yw; | |
1281 | |
1282 // (u + um)(v + vm) = uv + u vm + v um + um vm | |
1283 // Sxy = Suv + N * um vm | |
1284 // Suv = Sxy - N * (Sx/N)(Sy/N); | |
1285 g->Suv -= g->Su*yv; | |
1286 g->Suw -= g->Su*yw; | |
1287 g->Svw -= g->Sv*yw; | |
1288 | |
1289 // (u + um)**3 = u**3 + 3 u**2 um + 3 u um**2 + um**3 | |
1290 // Sxxx = Suuu + 3 um Suu + 3 um**2 Su + N.um**3 | |
1291 // Su = 0, um = Sx/N: | |
1292 // Suuu = Sxxx - 3 Sx*Suu/N - N.(Sx/N)**3 | |
1293 // = Sxxx - 3 Sx*Suu/N - Sx**3/N**2 | |
1294 | |
1295 // (u + um)**2 (v + vm) = (u**2 + 2 u um + um**2)(v + vm) | |
1296 // Sxxy = Suuv + vm Suu + 2 um (Suv + vm Su) + um**2 (Sv + N.vm) | |
1297 // | |
1298 // Su = 0, Sv = 0, vm = Sy/N: | |
1299 // Sxxy = Suuv + vm Suu + 2 um Suv + N um**2 vm | |
1300 // | |
1301 // Suuv = Sxxy - (Sy/N) Suu - 2 (Sx/N) Suv - (Sx/N)**2 Sy | |
1302 // = Sxxy - Suu*Sy/N - 2 Suv*Sx/N - Sx*Sx*Sy/N/N | |
1303 // = Sxxy - (Suu + Sx*Sx/N)*Sy/N - 2 Suv*Sx/N | |
1304 g->Suuu -= (3*g->Suu + g->Su*yu)*yu; | |
1305 g->Suuv -= (g->Suu + g->Su*yu)*yv + 2*g->Suv*yu; | |
1306 g->Suuw -= (g->Suu + g->Su*yu)*yw + 2*g->Suw*yu; | |
1307 | |
1308 g->Svvu -= (g->Svv + g->Sv*yv)*yu + 2*g->Suv*yv; | |
1309 g->Svvv -= (3*g->Svv + g->Sv*yv)*yv; | |
1310 g->Svvw -= (g->Svv + g->Sv*yv)*yw + 2*g->Svw*yv; | |
1311 | |
1312 g->Swwu -= (g->Sww + g->Sw*yw)*yu + 2*g->Suw*yw; | |
1313 g->Swwv -= (g->Sww + g->Sw*yw)*yv + 2*g->Svw*yw; | |
1314 g->Swww -= (3*g->Sww + g->Sw*yw)*yw; | |
1315 | |
1316 //---- Solve the system -------------------------------------------------- | |
1317 // uc Suu + vc Suv + wc Suw = (Suuu + Svvu + Swwu) / 2 | |
1318 // uc Suv + vc Svv + wc Svw = (Suuv + Svvv + Swwv) / 2 | |
1319 // uc Suw + vc Svw + wc Sww = (Suuw + Svvw + Swww) / 2 | |
1320 // Note this is symetric, with a positiv diagonal, hence | |
1321 // it always have a uniq solution. | |
1322 yu = 0.5f * (g->Suuu + g->Svvu + g->Swwu); | |
1323 yv = 0.5f * (g->Suuv + g->Svvv + g->Swwv); | |
1324 yw = 0.5f * (g->Suuw + g->Svvw + g->Swww); | |
1325 delta = g->Suu * (g->Svv * g->Sww - g->Svw * g->Svw) | |
1326 - g->Suv * (g->Suv * g->Sww - g->Svw * g->Suw) | |
1327 + g->Suw * (g->Suv * g->Svw - g->Svv * g->Suw); | |
1328 | |
1329 uc = (yu * (g->Svv * g->Sww - g->Svw * g->Svw) | |
1330 - yv * (g->Suv * g->Sww - g->Svw * g->Suw) | |
1331 + yw * (g->Suv * g->Svw - g->Svv * g->Suw) )/delta; | |
1332 vc = (g->Suu * ( yv * g->Sww - yw * g->Svw) | |
1333 - g->Suv * ( yu * g->Sww - yw * g->Suw) | |
1334 + g->Suw * ( yu * g->Svw - yv * g->Suw) )/delta; | |
1335 wc = (g->Suu * (g->Svv * yw - g->Svw * yv ) | |
1336 - g->Suv * (g->Suv * yw - g->Svw * yu ) | |
1337 + g->Suw * (g->Suv * yv - g->Svv * yu ) )/delta; | |
1338 | |
1339 // Back to uncentered coordinates: | |
1340 // xc = um + uc | |
1341 uc = g->Su/g->compass_N + compass_CX_f/32768.0f + uc; | |
1342 vc = g->Sv/g->compass_N + compass_CY_f/32768.0f + vc; | |
1343 wc = g->Sw/g->compass_N + compass_CZ_f/32768.0f + wc; | |
1344 | |
1345 // Then save the new calibrated center: | |
1346 compass_CX_f = (short)(32768 * uc); | |
1347 compass_CY_f = (short)(32768 * vc); | |
1348 compass_CZ_f = (short)(32768 * wc); | |
1349 } | |
1350 | |
1351 | |
1352 // =============================================================================== | |
1353 // compass_calib | |
1354 /// @brief the main loop for calibration | |
1355 /// output is compass_CX_f, compass_CY_f, compass_CZ_f and g | |
1356 /// 160704 removed -4096 limit for LSM303D | |
1357 /// | |
1358 /// @return always 0 | |
1359 // =============================================================================== | |
1360 int compass_calib_common(void) | |
1361 { | |
410
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1362 SCompassCalib g; |
38 | 1363 |
1364 // Starts with no calibration at all: | |
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1365 compass_reset_calibration(&g); |
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1366 uint32_t tickstart = 0; |
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1367 tickstart = HAL_GetTick(); |
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1368 /* run calibration for one minute */ |
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1369 while(time_elapsed_ms(tickstart,HAL_GetTick()) < 60000) |
38 | 1370 { |
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1371 while((SPI_Evaluate_RX_Data() == 0) && (time_elapsed_ms(tickstart,HAL_GetTick()) < 60000)) |
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1372 { |
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1373 HAL_Delay(1); |
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1374 } |
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1375 compass_read(); |
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1376 acceleration_read(); |
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1377 compass_calc_roll_pitch_only(); |
38 | 1378 |
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1379 if((hardwareCompass == compass_generation1 ) //HMC5883L) |
38 | 1380 &&((compass_DX_f == -4096) || |
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1381 (compass_DY_f == -4096) || |
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1382 (compass_DZ_f == -4096) )) |
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1383 { |
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1384 if(compass_gain == 0) |
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1385 return -1; |
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1386 compass_gain--; |
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1387 compass_init(1, compass_gain); |
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1388 compass_reset_calibration(&g); |
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1389 continue; |
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1390 } |
38 | 1391 |
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1392 copyCompassDataDuringCalibration(compass_DX_f,compass_DY_f,compass_DZ_f); |
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1393 compass_add_calibration(&g); |
104 | 1394 } |
38 | 1395 |
1396 compass_solve_calibration(&g); | |
1397 | |
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1398 tfull32 dataBlock[4]; |
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1399 dataBlock[0].Word16.low16 = compass_CX_f; |
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1400 dataBlock[0].Word16.hi16 = compass_CY_f; |
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1401 dataBlock[1].Word16.low16 = compass_CZ_f; |
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1402 dataBlock[1].Word16.hi16 = 0xFFFF; |
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1403 dataBlock[2].Full32 = 0x7FFFFFFF; |
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1404 dataBlock[3].Full32 = 0x7FFFFFFF; |
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1405 BFA_writeDataBlock((uint32_t *)dataBlock); |
38 | 1406 |
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1407 return 0; |
38 | 1408 } |
1409 |