Mercurial > public > ostc4
annotate Small_CPU/Src/compass.c @ 436:079f32a8e68c Improve_BatteryGasGauge
Moved power on detection to RTE:
Removed no longer needed funtion to reset the charger status in case of an power on reset
author | ideenmodellierer |
---|---|
date | Sun, 23 Feb 2020 21:18:49 +0100 |
parents | f9458e979154 |
children | 9eeab3fead8f |
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 | |
410
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42 extern uint32_t time_elapsed_ms(uint32_t ticksstart,uint32_t ticksnow); |
f9458e979154
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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 { | |
263 uint8_t data = WHO_AM_I; | |
264 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
265 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
357 | 266 if(data == WHOIAM_VALUE_LSM303D) |
267 hardwareCompass = compass_generation2; //LSM303D; | |
358 | 268 data = WHO_AM_I; |
269 I2C_Master_Transmit( DEVICE_ACCELARATOR_303AGR, &data, 1); | |
270 I2C_Master_Receive( DEVICE_ACCELARATOR_303AGR, &data, 1); | |
357 | 271 if(data == WHOIAM_VALUE_LSM303AGR) |
272 hardwareCompass = compass_generation3; //LSM303AGR; | |
38 | 273 } |
70 | 274 |
180 | 275 /* Assume that a HMC5883L is equipped by default if detection still failed */ |
38 | 276 if(hardwareCompass == 0) |
357 | 277 hardwareCompass = compass_generation1; //HMC5883L; |
38 | 278 |
279 HAL_StatusTypeDef resultOfOperationHMC_MMA = HAL_TIMEOUT; | |
280 | |
358 | 281 // test if both chips of the two-chip solution (gen 1) are present |
357 | 282 if(hardwareCompass == compass_generation1) // HMC5883L) |
38 | 283 { |
358 | 284 HAL_Delay(10); |
285 MX_I2C1_Init(); | |
38 | 286 uint8_t data = 0x2A; // CTRL_REG1 of DEVICE_ACCELARATOR_MMA8452Q |
287 resultOfOperationHMC_MMA = I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, &data, 1); | |
288 if(resultOfOperationHMC_MMA == HAL_OK) | |
289 { | |
357 | 290 hardwareCompass = compass_generation1; //HMC5883L; // all fine, keep it |
38 | 291 } |
292 else | |
293 { | |
294 hardwareCompass = COMPASS_NOT_RECOGNIZED; | |
295 } | |
296 } | |
297 | |
357 | 298 if(hardwareCompass == compass_generation2) //LSM303D) |
38 | 299 compass_init_LSM303D(fast, gain); |
357 | 300 if(hardwareCompass == compass_generation3) //LSM303AGR) |
301 compass_init_LSM303AGR(fast, gain); | |
302 if(hardwareCompass == compass_generation1) //HMC5883L) | |
38 | 303 compass_init_HMC5883L(fast, gain); |
304 | |
357 | 305 tfull32 dataBlock[4]; |
306 if(BFA_readLastDataBlock((uint32_t *)dataBlock) == BFA_OK) | |
38 | 307 { |
308 compass_CX_f = dataBlock[0].Word16.low16; | |
309 compass_CY_f = dataBlock[0].Word16.hi16; | |
310 compass_CZ_f = dataBlock[1].Word16.low16; | |
311 } | |
312 | |
313 } | |
314 | |
315 | |
316 // =============================================================================== | |
317 // compass_calib | |
318 /// @brief with onchip_lowpass_filter configuration for accelerometer of LSM303D | |
319 // =============================================================================== | |
320 int compass_calib(void) | |
321 { | |
357 | 322 if(hardwareCompass == compass_generation2) //LSM303D) |
38 | 323 { |
324 LSM303D_accel_set_onchip_lowpass_filter_bandwidth(773); | |
325 int out = compass_calib_common(); | |
326 LSM303D_accel_set_onchip_lowpass_filter_bandwidth(LSM303D_ACCEL_DEFAULT_ONCHIP_FILTER_FREQ); | |
327 return out; | |
328 } | |
329 else | |
357 | 330 if(hardwareCompass == compass_generation1) //HMC5883L) |
331 { | |
332 return compass_calib_common(); | |
333 } | |
334 else | |
335 if(hardwareCompass == compass_generation3) //LSM303AGR) | |
38 | 336 { |
337 return compass_calib_common(); | |
338 } | |
339 else | |
340 { | |
341 return 0; // standard answer of compass_calib_common(); | |
342 } | |
343 | |
344 | |
345 } | |
346 | |
347 | |
348 // =============================================================================== | |
349 // compass_sleep | |
350 /// @brief low power mode | |
351 // =============================================================================== | |
352 void compass_sleep(void) | |
353 { | |
357 | 354 if(hardwareCompass == compass_generation2) //LSM303D) |
38 | 355 { |
356 compass_sleep_LSM303D(); | |
357 } | |
358 else | |
357 | 359 if(hardwareCompass == compass_generation1) //HMC5883L) |
38 | 360 { |
361 compass_sleep_HMC5883L(); | |
362 } | |
363 } | |
364 | |
365 | |
366 // =============================================================================== | |
367 // compass_read | |
368 /// @brief reads magnetometer and accelerometer for LSM303D, | |
369 /// otherwise magnetometer only | |
370 // =============================================================================== | |
371 void compass_read(void) | |
372 { | |
357 | 373 if(hardwareCompass == compass_generation2) //LSM303D) |
38 | 374 compass_read_LSM303D(); |
357 | 375 if(hardwareCompass == compass_generation1) //HMC5883L) |
38 | 376 compass_read_HMC5883L(); |
357 | 377 if(hardwareCompass == compass_generation3) //LSM303AGR) |
378 compass_read_LSM303AGR(); | |
379 | |
38 | 380 } |
381 | |
382 | |
383 // =============================================================================== | |
384 // accelerator_init | |
385 /// @brief empty for for LSM303D | |
386 // =============================================================================== | |
387 void accelerator_init(void) | |
388 { | |
357 | 389 if(hardwareCompass == compass_generation1) //HMC5883L) |
38 | 390 accelerator_init_MMA8452Q(); |
391 } | |
392 | |
393 | |
394 // =============================================================================== | |
395 // accelerator_sleep | |
396 /// @brief empty for for LSM303D | |
397 // =============================================================================== | |
398 void accelerator_sleep(void) | |
399 { | |
357 | 400 if(hardwareCompass == compass_generation1) //HMC5883L) |
38 | 401 accelerator_sleep_MMA8452Q(); |
402 } | |
403 | |
404 | |
405 // =============================================================================== | |
406 // acceleration_read | |
407 /// @brief empty for for LSM303D | |
408 // =============================================================================== | |
409 void acceleration_read(void) | |
410 { | |
357 | 411 if(hardwareCompass == compass_generation2) //LSM303D) |
38 | 412 acceleration_read_LSM303D(); |
357 | 413 if(hardwareCompass == compass_generation1) //HMC5883L) |
38 | 414 acceleration_read_MMA8452Q(); |
357 | 415 if(hardwareCompass == compass_generation3) //LSM303AGR) |
416 acceleration_read_LSM303AGR(); | |
38 | 417 } |
418 | |
419 | |
420 /* Private functions ---------------------------------------------------------*/ | |
421 | |
422 // =============================================================================== | |
357 | 423 // LSM303AGR_read_reg |
424 // =============================================================================== | |
425 uint8_t LSM303AGR_read_reg(uint8_t addr) | |
426 { | |
427 uint8_t data; | |
428 | |
429 I2C_Master_Transmit( DEVICE_COMPASS_303AGR, &addr, 1); | |
430 I2C_Master_Receive( DEVICE_COMPASS_303AGR, &data, 1); | |
431 return data; | |
432 } | |
433 | |
434 | |
435 // =============================================================================== | |
436 // LSM303AGR_write_reg | |
437 // =============================================================================== | |
438 void LSM303AGR_write_reg(uint8_t addr, uint8_t value) | |
439 { | |
440 uint8_t data[2]; | |
441 | |
442 data[0] = addr; | |
443 data[1] = value; | |
444 I2C_Master_Transmit( DEVICE_COMPASS_303AGR, data, 2); | |
445 } | |
446 | |
447 // =============================================================================== | |
448 // LSM303AGR_acc_write_reg | |
449 // =============================================================================== | |
450 void LSM303AGR_acc_write_reg(uint8_t addr, uint8_t value) | |
451 { | |
452 uint8_t data[2]; | |
453 | |
454 data[0] = addr; | |
455 data[1] = value; | |
456 I2C_Master_Transmit( DEVICE_ACCELARATOR_303AGR, data, 2); | |
457 } | |
458 | |
459 | |
460 // =============================================================================== | |
461 // LSM303AGR_write_checked_reg | |
462 // =============================================================================== | |
463 void LSM303AGR_write_checked_reg(uint8_t addr, uint8_t value) | |
464 { | |
465 LSM303AGR_write_reg(addr, value); | |
466 } | |
467 | |
468 // =============================================================================== | |
469 // LSM303AGR_acc_write_checked_reg | |
470 // =============================================================================== | |
471 void LSM303AGR_acc_write_checked_reg(uint8_t addr, uint8_t value) | |
472 { | |
473 LSM303AGR_acc_write_reg(addr, value); | |
474 } | |
475 | |
476 // =============================================================================== | |
38 | 477 // LSM303D_read_reg |
478 // =============================================================================== | |
479 uint8_t LSM303D_read_reg(uint8_t addr) | |
480 { | |
481 uint8_t data; | |
482 | |
483 I2C_Master_Transmit( DEVICE_COMPASS_303D, &addr, 1); | |
484 I2C_Master_Receive( DEVICE_COMPASS_303D, &data, 1); | |
485 return data; | |
486 } | |
487 | |
488 | |
489 // =============================================================================== | |
490 // LSM303D_write_reg | |
491 // =============================================================================== | |
492 void LSM303D_write_reg(uint8_t addr, uint8_t value) | |
493 { | |
494 uint8_t data[2]; | |
495 | |
496 /* enable accel*/ | |
497 data[0] = addr; | |
498 data[1] = value; | |
499 I2C_Master_Transmit( DEVICE_COMPASS_303D, data, 2); | |
500 } | |
501 | |
502 | |
503 // =============================================================================== | |
504 // LSM303D_write_checked_reg | |
505 // =============================================================================== | |
506 void LSM303D_write_checked_reg(uint8_t addr, uint8_t value) | |
507 { | |
508 LSM303D_write_reg(addr, value); | |
509 } | |
510 | |
511 | |
512 // =============================================================================== | |
513 // LSM303D_modify_reg | |
514 // =============================================================================== | |
515 void LSM303D_modify_reg(unsigned reg, uint8_t clearbits, uint8_t setbits) | |
516 { | |
517 uint8_t val; | |
518 | |
519 val = LSM303D_read_reg(reg); | |
520 val &= ~clearbits; | |
521 val |= setbits; | |
522 LSM303D_write_checked_reg(reg, val); | |
523 } | |
524 | |
525 // =============================================================================== | |
526 // LSM303D_accel_set_onchip_lowpass_filter_bandwidth | |
527 // =============================================================================== | |
528 int LSM303D_accel_set_onchip_lowpass_filter_bandwidth(unsigned bandwidth) | |
529 { | |
530 uint8_t setbits = 0; | |
531 uint8_t clearbits = REG2_ANTIALIAS_FILTER_BW_BITS_A; | |
532 | |
533 if (bandwidth == 0) { | |
534 bandwidth = 773; | |
535 } | |
536 | |
537 if (bandwidth <= 50) { | |
538 setbits |= REG2_AA_FILTER_BW_50HZ_A; | |
539 _accel_onchip_filter_bandwith = 50; | |
540 | |
541 } else if (bandwidth <= 194) { | |
542 setbits |= REG2_AA_FILTER_BW_194HZ_A; | |
543 _accel_onchip_filter_bandwith = 194; | |
544 | |
545 } else if (bandwidth <= 362) { | |
546 setbits |= REG2_AA_FILTER_BW_362HZ_A; | |
547 _accel_onchip_filter_bandwith = 362; | |
548 | |
549 } else if (bandwidth <= 773) { | |
550 setbits |= REG2_AA_FILTER_BW_773HZ_A; | |
551 _accel_onchip_filter_bandwith = 773; | |
552 | |
553 } else { | |
554 return -1; | |
555 } | |
556 | |
557 LSM303D_modify_reg(ADDR_CTRL_REG2, clearbits, setbits); | |
558 | |
559 return 0; | |
560 } | |
561 | |
562 | |
563 // =============================================================================== | |
564 // LSM303D_accel_set_driver_lowpass_filter | |
565 // =============================================================================== | |
566 int LSM303D_accel_set_driver_lowpass_filter(float samplerate, float bandwidth) | |
567 { | |
568 /* | |
569 _accel_filter_x_set_cutoff_frequency(samplerate, bandwidth); | |
570 _accel_filter_y_set_cutoff_frequency(samplerate, bandwidth); | |
571 _accel_filter_z_set_cutoff_frequency(samplerate, bandwidth); | |
572 */ | |
573 return 0; | |
574 } | |
575 | |
576 | |
577 // rotate_mag_3f: nicht genutzt aber praktisch; rotate_accel_3f wird benutzt | |
578 // =============================================================================== | |
579 // rotate_mag_3f | |
580 /// @brief swap axis in convient way, by hw | |
581 /// @param *x raw input is set to *y input | |
582 /// @param *y raw input is set to -*x input | |
583 /// @param *z raw is not touched | |
584 // =============================================================================== | |
585 void rotate_mag_3f(float *x, float *y, float *z) | |
586 { | |
587 return; | |
588 /* | |
589 *x = *x; // HMC: *x = -*y | |
590 *y = *y; // HMC: *y = *x // change 20.04.2016: zuvor *y = -*y | |
591 *z = *z; // HMC: *z = *z | |
592 */ | |
593 } | |
594 | |
595 | |
596 // =============================================================================== | |
597 // rotate_accel_3f | |
598 /// @brief swap axis in convient way, by hw, same as MMA8452Q | |
599 /// @param *x raw input, output is with sign change | |
600 /// @param *y raw input, output is with sign change | |
601 /// @param *z raw input, output is with sign change | |
602 // =============================================================================== | |
603 void rotate_accel_3f(float *x, float *y, float *z) | |
604 { | |
605 *x = -*x; | |
606 *y = -*y; | |
607 *z = -*z; | |
608 /* tested: | |
609 x = x, y =-y, z=-z: does not work with roll | |
610 x = x, y =y, z=-z: does not work with pitch | |
611 x = x, y =y, z=z: does not work at all | |
612 */ | |
613 } | |
614 | |
615 | |
616 // =============================================================================== | |
357 | 617 // compass_init_LSM303D |
38 | 618 /// This might be called several times with different gain values during calibration |
619 /// but gain change is not supported at the moment. | |
620 /// | |
621 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
622 // =============================================================================== | |
623 | |
624 //uint8_t testCompassLS303D[11]; | |
625 | |
626 void compass_init_LSM303D(uint8_t fast, uint8_t gain) | |
627 { | |
628 if(fast == 0) | |
629 { | |
630 LSM303D_write_checked_reg(ADDR_CTRL_REG0, 0x00); | |
631 LSM303D_write_checked_reg(ADDR_CTRL_REG1, 0x3F); // mod 12,5 Hz 3 instead of 6,25 Hz 2 | |
632 LSM303D_write_checked_reg(ADDR_CTRL_REG2, 0xC0); | |
633 LSM303D_write_checked_reg(ADDR_CTRL_REG3, 0x00); | |
634 LSM303D_write_checked_reg(ADDR_CTRL_REG4, 0x00); | |
635 LSM303D_write_checked_reg(ADDR_CTRL_REG5, 0x68); // mod 12,5 Hz 8 instead of 6,25 Hz 4 | |
636 } | |
637 else | |
638 { | |
639 LSM303D_write_checked_reg(ADDR_CTRL_REG0, 0x00); | |
640 LSM303D_write_checked_reg(ADDR_CTRL_REG1, 0x6F); // 100 Hz | |
641 LSM303D_write_checked_reg(ADDR_CTRL_REG2, 0xC0); | |
642 LSM303D_write_checked_reg(ADDR_CTRL_REG3, 0x00); | |
643 LSM303D_write_checked_reg(ADDR_CTRL_REG4, 0x00); | |
644 LSM303D_write_checked_reg(ADDR_CTRL_REG5, 0x74); // 100 Hz | |
645 } | |
646 LSM303D_write_checked_reg(ADDR_CTRL_REG6, 0x00); | |
647 LSM303D_write_checked_reg(ADDR_CTRL_REG7, 0x00); | |
648 | |
649 return; | |
650 } | |
651 | |
652 | |
653 // =============================================================================== | |
654 // compass_sleep_LSM303D | |
357 | 655 // @brief Gen 2 chip |
38 | 656 // =============================================================================== |
657 void compass_sleep_LSM303D(void) | |
658 { | |
659 LSM303D_write_checked_reg(ADDR_CTRL_REG1, 0x00); // CNTRL1: acceleration sensor Power-down mode | |
660 LSM303D_write_checked_reg(ADDR_CTRL_REG7, 0x02); // CNTRL7: magnetic sensor Power-down mode | |
661 } | |
662 | |
663 | |
664 // =============================================================================== | |
665 // acceleration_read_LSM303D | |
357 | 666 // output is accel_DX_f, accel_DY_f, accel_DZ_f |
38 | 667 // =============================================================================== |
668 void acceleration_read_LSM303D(void) | |
669 { | |
670 uint8_t data; | |
671 float xraw_f, yraw_f, zraw_f; | |
672 float accel_report_x, accel_report_y, accel_report_z; | |
673 | |
674 memset(accDataBuffer,0,6); | |
675 | |
676 accel_DX_f = 0; | |
677 accel_DY_f = 0; | |
678 accel_DZ_f = 0; | |
679 | |
680 for(int i=0;i<6;i++) | |
681 { | |
682 data = ADDR_OUT_X_L_A + i; | |
683 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
684 I2C_Master_Receive( DEVICE_COMPASS_303D, &accDataBuffer[i], 1); | |
685 } | |
686 | |
687 xraw_f = ((float)( (int16_t)((accDataBuffer[1] << 8) | (accDataBuffer[0])))); | |
688 yraw_f = ((float)( (int16_t)((accDataBuffer[3] << 8) | (accDataBuffer[2])))); | |
689 zraw_f = ((float)( (int16_t)((accDataBuffer[5] << 8) | (accDataBuffer[4])))); | |
690 | |
691 rotate_accel_3f(&xraw_f, &yraw_f, &zraw_f); | |
692 | |
693 // mh | |
694 accel_report_x = xraw_f; | |
695 accel_report_y = yraw_f; | |
696 accel_report_z = zraw_f; | |
697 | |
698 accel_DX_f = ((int16_t)(accel_report_x)); | |
699 accel_DY_f = ((int16_t)(accel_report_y)); | |
700 accel_DZ_f = ((int16_t)(accel_report_z)); | |
701 } | |
702 | |
703 | |
704 // =============================================================================== | |
705 // compass_read_LSM303D | |
706 /// | |
707 /// output is compass_DX_f, compass_DY_f, compass_DZ_f | |
708 // =============================================================================== | |
709 void compass_read_LSM303D(void) | |
710 { | |
711 uint8_t data; | |
712 // float xraw_f, yraw_f, zraw_f; | |
713 // float mag_report_x, mag_report_y, mag_report_z; | |
714 | |
715 memset(magDataBuffer,0,6); | |
716 | |
717 compass_DX_f = 0; | |
718 compass_DY_f = 0; | |
719 compass_DZ_f = 0; | |
720 | |
721 for(int i=0;i<6;i++) | |
722 { | |
723 data = ADDR_OUT_X_L_M + i; | |
724 I2C_Master_Transmit( DEVICE_COMPASS_303D, &data, 1); | |
725 I2C_Master_Receive( DEVICE_COMPASS_303D, &magDataBuffer[i], 1); | |
726 } | |
727 | |
728 // mh 160620 flip x and y if flip display | |
729 compass_DX_f = (((int16_t)((magDataBuffer[1] << 8) | (magDataBuffer[0])))); | |
730 compass_DY_f = (((int16_t)((magDataBuffer[3] << 8) | (magDataBuffer[2])))); | |
731 compass_DZ_f = (((int16_t)((magDataBuffer[5] << 8) | (magDataBuffer[4])))); | |
732 // no rotation | |
733 return; | |
357 | 734 } |
735 | |
736 | |
737 // =============================================================================== | |
738 // compass_init_LSM303AGR | |
739 /// This might be called several times with different gain values during calibration | |
740 /// but gain change is not supported at the moment. | |
741 /// | |
742 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
743 // =============================================================================== | |
38 | 744 |
357 | 745 void compass_init_LSM303AGR(uint8_t fast, uint8_t gain) |
746 { | |
747 if(fast == 0) | |
748 { | |
358 | 749 // init compass |
357 | 750 LSM303AGR_write_checked_reg(0x60, 0x80); // 10Hz |
751 LSM303AGR_write_checked_reg(0x61, 0x03); // CFG_REG_B_M | |
752 LSM303AGR_write_checked_reg(0x62, 0x10); // CFG_REG_C_M | |
358 | 753 LSM303AGR_write_checked_reg(0x63, 0x00); // INT_CTRL_REG_M |
754 | |
755 // init accel (Same chip, but different address...) | |
756 LSM303AGR_acc_write_checked_reg(0x1F, 0x00); // TEMP_CFG_REG_A (Temp sensor off) | |
757 LSM303AGR_acc_write_checked_reg(0x20, 0x4F); // CTRL_REG1_A (50Hz, x,y,z = ON) | |
758 LSM303AGR_acc_write_checked_reg(0x21, 0x00); // CTRL_REG2_A | |
759 LSM303AGR_acc_write_checked_reg(0x22, 0x00); // CTRL_REG3_A | |
760 LSM303AGR_acc_write_checked_reg(0x23, 0x08); // CTRL_REG4_A, High Resolution Mode enabled | |
357 | 761 } |
762 else | |
763 { | |
358 | 764 // init compass |
765 LSM303AGR_write_checked_reg(0x60, 0x84); // 20Hz | |
357 | 766 LSM303AGR_write_checked_reg(0x61, 0x03); // CFG_REG_B_M |
767 LSM303AGR_write_checked_reg(0x62, 0x10); // CFG_REG_C_M | |
358 | 768 LSM303AGR_write_checked_reg(0x63, 0x00); // INT_CTRL_REG_M |
769 | |
770 // init accel (Same chip, but different address...) | |
771 LSM303AGR_acc_write_checked_reg(0x1F, 0x00); // TEMP_CFG_REG_A (Temp sensor off) | |
772 LSM303AGR_acc_write_checked_reg(0x20, 0x4F); // CTRL_REG1_A (50Hz, x,y,z = ON) | |
773 LSM303AGR_acc_write_checked_reg(0x21, 0x00); // CTRL_REG2_A | |
774 LSM303AGR_acc_write_checked_reg(0x22, 0x00); // CTRL_REG3_A | |
775 LSM303AGR_acc_write_checked_reg(0x23, 0x0); // CTRL_REG4_A, High Resolution Mode enabled | |
357 | 776 } |
777 | |
778 return; | |
779 } | |
780 | |
781 | |
782 // =============================================================================== | |
783 // compass_sleep_LSM303D | |
784 // @brief Gen 2 chip | |
785 // =============================================================================== | |
786 void compass_sleep_LSM303AGR(void) | |
787 { | |
788 LSM303AGR_write_checked_reg(0x60, 0x03); // | |
789 LSM303AGR_write_checked_reg(0x61, 0x04); // | |
790 LSM303AGR_write_checked_reg(0x62, 0x51); // | |
791 LSM303AGR_write_checked_reg(0x63, 0x00); // | |
792 | |
793 | |
794 LSM303AGR_acc_write_checked_reg(0x1F, 0x00); // | |
795 LSM303AGR_acc_write_checked_reg(0x20, 0x00); // | |
796 } | |
797 | |
38 | 798 |
357 | 799 // =============================================================================== |
800 // acceleration_read_LSM303AGR | |
801 // output is accel_DX_f, accel_DY_f, accel_DZ_f | |
802 // =============================================================================== | |
803 void acceleration_read_LSM303AGR(void) | |
804 { | |
805 uint8_t data; | |
806 float xraw_f, yraw_f, zraw_f; | |
807 float accel_report_x, accel_report_y, accel_report_z; | |
808 | |
809 memset(accDataBuffer,0,6); | |
810 | |
811 accel_DX_f = 0; | |
812 accel_DY_f = 0; | |
813 accel_DZ_f = 0; | |
814 | |
815 for(int i=0;i<6;i++) | |
816 { | |
358 | 817 data = 0x28 + i; // OUT_X_L_A |
357 | 818 I2C_Master_Transmit( DEVICE_ACCELARATOR_303AGR, &data, 1); |
819 I2C_Master_Receive( DEVICE_ACCELARATOR_303AGR, &accDataBuffer[i], 1); | |
820 } | |
821 | |
822 xraw_f = ((float)( (int16_t)((accDataBuffer[1] << 8) | (accDataBuffer[0])))); | |
823 yraw_f = ((float)( (int16_t)((accDataBuffer[3] << 8) | (accDataBuffer[2])))); | |
824 zraw_f = ((float)( (int16_t)((accDataBuffer[5] << 8) | (accDataBuffer[4])))); | |
825 | |
826 rotate_accel_3f(&xraw_f, &yraw_f, &zraw_f); | |
827 | |
828 // mh | |
829 accel_report_x = xraw_f; | |
830 accel_report_y = yraw_f; | |
358 | 831 accel_report_z = -zraw_f; // flip Z in gen 2 hardware |
357 | 832 |
833 accel_DX_f = ((int16_t)(accel_report_x)); | |
834 accel_DY_f = ((int16_t)(accel_report_y)); | |
835 accel_DZ_f = ((int16_t)(accel_report_z)); | |
836 } | |
837 | |
838 | |
839 // =============================================================================== | |
840 // compass_read_LSM303AGR | |
841 /// | |
842 /// output is compass_DX_f, compass_DY_f, compass_DZ_f | |
843 // =============================================================================== | |
844 void compass_read_LSM303AGR(void) | |
845 { | |
846 uint8_t data; | |
847 // float xraw_f, yraw_f, zraw_f; | |
848 // float mag_report_x, mag_report_y, mag_report_z; | |
849 | |
850 memset(magDataBuffer,0,6); | |
851 | |
852 compass_DX_f = 0; | |
853 compass_DY_f = 0; | |
854 compass_DZ_f = 0; | |
855 | |
856 for(int i=0;i<6;i++) | |
857 { | |
858 data = 0x68 + i; // OUTX_L_REG_M | |
859 I2C_Master_Transmit( DEVICE_COMPASS_303AGR, &data, 1); | |
860 I2C_Master_Receive( DEVICE_COMPASS_303AGR, &magDataBuffer[i], 1); | |
861 } | |
862 | |
863 // mh 160620 flip x and y if flip display | |
864 compass_DX_f = (((int16_t)((magDataBuffer[1] << 8) | (magDataBuffer[0])))); | |
865 compass_DY_f = (((int16_t)((magDataBuffer[3] << 8) | (magDataBuffer[2])))); | |
866 compass_DZ_f = (((int16_t)((magDataBuffer[5] << 8) | (magDataBuffer[4])))); | |
358 | 867 |
868 // align axis in gen 2 hardware | |
869 compass_DZ_f *= -1; | |
870 | |
357 | 871 return; |
38 | 872 } |
873 | |
874 | |
875 // -------------------------------------------------------------------------------- | |
876 // ----------EARLIER COMPONENTS --------------------------------------------------- | |
877 // -------------------------------------------------------------------------------- | |
878 | |
879 // =============================================================================== | |
880 // compass_init_HMC5883L | |
881 /// @brief The horrible Honeywell compass chip | |
882 /// This might be called several times during calibration | |
883 /// | |
884 /// @param fast: 1 is fast mode, 0 is normal mode | |
885 /// @param gain: 7 is max gain and set with here, compass_calib() might reduce it | |
886 // =============================================================================== | |
887 void compass_init_HMC5883L(uint8_t fast, uint8_t gain) | |
888 { | |
889 uint8_t write_buffer[4]; | |
890 | |
891 compass_gain = gain; | |
892 uint16_t length = 0; | |
893 write_buffer[0] = 0x00; // 00 = config Register A | |
894 | |
895 if( fast ) | |
896 write_buffer[1] = 0x38; // 0b 0011 1000; // ConfigA: 75Hz, 2 Samples averaged | |
897 else | |
898 write_buffer[1] = 0x68; // 0b 0110 1000; // ConfigA: 3Hz, 8 Samples averaged | |
899 | |
900 switch(gain) | |
901 { | |
902 case 7: | |
903 write_buffer[2] = 0xE0; //0b 1110 0000; // ConfigB: gain | |
904 break; | |
905 case 6: | |
906 write_buffer[2] = 0xC0; //0b 1100 0000; // ConfigB: gain | |
907 break; | |
908 case 5: | |
909 write_buffer[2] = 0xA0; //0b 1010 0000; // ConfigB: gain | |
910 break; | |
911 case 4: | |
912 write_buffer[2] = 0x80; //0b 1000 0000; // ConfigB: gain | |
913 break; | |
914 case 3: | |
915 write_buffer[2] = 0x60; //0b 0110 0000; // ConfigB: gain | |
916 break; | |
917 case 2: | |
918 write_buffer[2] = 0x40; //0b 01000 0000; // ConfigB: gain | |
919 break; | |
920 case 1: | |
921 write_buffer[2] = 0x20; //0b 00100 0000; // ConfigB: gain | |
922 break; | |
923 case 0: | |
924 write_buffer[2] = 0x00; //0b 00000 0000; // ConfigB: gain | |
925 break; | |
926 } | |
927 write_buffer[3] = 0x00; // Mode: continuous mode | |
928 length = 4; | |
929 //hmc_twi_write(0); | |
930 I2C_Master_Transmit( DEVICE_COMPASS_HMC5883L, write_buffer, length); | |
931 } | |
932 | |
933 | |
934 | |
935 // =============================================================================== | |
936 // compass_sleep_HMC5883L | |
937 /// @brief Power-down mode for Honeywell compass chip | |
938 // =============================================================================== | |
939 void compass_sleep_HMC5883L(void) | |
940 { | |
941 uint8_t write_buffer[4]; | |
942 uint16_t length = 0; | |
943 | |
944 write_buffer[0] = 0x00; // 00 = config Register A | |
945 write_buffer[1] = 0x68; // 0b 0110 1000; // ConfigA | |
946 write_buffer[2] = 0x20; // 0b 0010 0000; // ConfigB | |
947 write_buffer[3] = 0x02; // 0b 0000 0010; // Idle Mode | |
948 length = 4; | |
949 I2C_Master_Transmit( DEVICE_COMPASS_HMC5883L, write_buffer, length); | |
950 } | |
951 | |
952 | |
953 // =============================================================================== | |
954 // accelerator_init_MMA8452Q | |
955 /// @brief Power-down mode for acceleration chip used in combination with Honeywell compass | |
956 // =============================================================================== | |
957 void accelerator_init_MMA8452Q(void) | |
958 { | |
959 uint8_t write_buffer[4]; | |
960 uint16_t length = 0; | |
961 //HAL_Delay(1); | |
962 //return; | |
963 write_buffer[0] = 0x0E; // XYZ_DATA_CFG | |
964 write_buffer[1] = 0x00;//0b00000000; // High pass Filter=0 , +/- 2g range | |
965 length = 2; | |
966 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
967 //HAL_Delay(1); | |
968 write_buffer[0] = 0x2A; // CTRL_REG1 | |
969 write_buffer[1] = 0x34; //0b00110100; // CTRL_REG1: 160ms data rate, St.By Mode, reduced noise mode | |
970 write_buffer[2] = 0x02; //0b00000010; // CTRL_REG2: High Res in Active mode | |
971 length = 3; | |
972 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
973 | |
974 //HAL_Delay(1); | |
975 //hw_delay_us(100); | |
976 write_buffer[0] = 0x2A; // CTRL_REG1 | |
977 write_buffer[1] = 0x35; //0b00110101; // CTRL_REG1: ... Active Mode | |
978 length = 2; | |
979 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
980 /* | |
981 HAL_Delay(6); | |
982 compass_read(); | |
983 HAL_Delay(1); | |
984 acceleration_read(); | |
985 | |
986 compass_calc(); | |
987 */ | |
988 } | |
989 | |
990 | |
991 // =============================================================================== | |
992 // accelerator_sleep_MMA8452Q | |
993 /// @brief compass_sleep_HMC5883L | |
994 // =============================================================================== | |
995 void accelerator_sleep_MMA8452Q(void) | |
996 { | |
997 uint16_t length = 0; | |
998 uint8_t write_buffer[4]; | |
999 | |
1000 write_buffer[0] = 0x2A; // CTRL_REG1 | |
1001 write_buffer[1] = 0x00; //0b00000000; // CTRL_REG1: Standby Mode | |
1002 length = 2; | |
1003 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, write_buffer, length); | |
1004 } | |
1005 | |
1006 | |
1007 // =============================================================================== | |
1008 // compass_read_HMC5883L | |
1009 /// @brief The new ST 303D - get ALL data and store in static variables | |
1010 /// | |
1011 /// output is compass_DX_f, compass_DY_f, compass_DZ_f | |
1012 // =============================================================================== | |
1013 void compass_read_HMC5883L(void) | |
1014 { | |
1015 uint8_t buffer[20]; | |
1016 compass_DX_f = 0; | |
1017 compass_DY_f = 0; | |
1018 compass_DZ_f = 0; | |
1019 uint8_t length = 0; | |
1020 uint8_t read_buffer[6]; | |
1021 signed_tword data; | |
1022 for(int i = 0; i<6;i++) | |
1023 read_buffer[i] = 0; | |
1024 buffer[0] = 0x03; // 03 = Data Output X MSB Register | |
1025 length = 1; | |
1026 I2C_Master_Transmit( DEVICE_COMPASS_HMC5883L, buffer, length); | |
1027 length = 6; | |
1028 I2C_Master_Receive( DEVICE_COMPASS_HMC5883L, read_buffer, length); | |
1029 | |
1030 | |
1031 data.Byte.hi = read_buffer[0]; | |
1032 data.Byte.low = read_buffer[1]; | |
1033 //Y = Z | |
1034 compass_DY_f = - data.Word; | |
1035 | |
1036 data.Byte.hi = read_buffer[2]; | |
1037 data.Byte.low = read_buffer[3]; | |
1038 compass_DZ_f = data.Word; | |
1039 | |
1040 data.Byte.hi = read_buffer[4]; | |
1041 data.Byte.low = read_buffer[5]; | |
1042 //X = -Y | |
1043 compass_DX_f = data.Word; | |
1044 } | |
1045 | |
1046 | |
1047 // =============================================================================== | |
1048 // acceleration_read_MMA8452Q | |
1049 /// @brief The old MMA8452Q used with the Honeywell compass | |
1050 /// get the acceleration data and store in static variables | |
1051 /// | |
1052 /// output is accel_DX_f, accel_DY_f, accel_DZ_f | |
1053 // =============================================================================== | |
1054 void acceleration_read_MMA8452Q(void) | |
1055 { | |
1056 uint8_t buffer[20]; | |
1057 accel_DX_f = 0; | |
1058 accel_DY_f = 0; | |
1059 accel_DZ_f = 0; | |
1060 uint8_t length = 0; | |
1061 // bit8_Type status ; | |
1062 uint8_t read_buffer[7]; | |
1063 signed_tword data; | |
1064 for(int i = 0; i<6;i++) | |
1065 read_buffer[i] = 0; | |
1066 buffer[0] = 0x00; // 03 = Data Output X MSB Register | |
1067 length = 1; | |
1068 I2C_Master_Transmit( DEVICE_ACCELARATOR_MMA8452Q, buffer, length); | |
1069 length = 7; | |
1070 I2C_Master_Receive( DEVICE_ACCELARATOR_MMA8452Q, read_buffer, length); | |
1071 | |
1072 // status.uw = read_buffer[0]; | |
1073 data.Byte.hi = read_buffer[1]; | |
1074 data.Byte.low = read_buffer[2]; | |
1075 accel_DX_f =data.Word/16; | |
1076 data.Byte.hi = read_buffer[3]; | |
1077 data.Byte.low = read_buffer[4]; | |
1078 accel_DY_f =data.Word/16; | |
1079 data.Byte.hi = read_buffer[5]; | |
1080 data.Byte.low = read_buffer[6]; | |
1081 accel_DZ_f =data.Word/16; | |
1082 | |
1083 accel_DX_f *= -1; | |
1084 accel_DY_f *= -1; | |
1085 accel_DZ_f *= -1; | |
1086 } | |
1087 | |
1088 | |
1089 // =============================================================================== | |
1090 // compass_calc_roll_pitch_only | |
1091 /// @brief only the roll and pitch parts of compass_calc() | |
1092 /// | |
1093 /// input is accel_DX_f, accel_DY_f, accel_DZ_f | |
1094 /// output is compass_pitch and compass_roll | |
1095 // =============================================================================== | |
1096 void compass_calc_roll_pitch_only(void) | |
1097 { | |
1098 float sinPhi, cosPhi; | |
1099 float Phi, Teta; | |
1100 | |
1101 //---- Calculate sine and cosine of roll angle Phi ----------------------- | |
1102 Phi= atan2f(accel_DY_f, accel_DZ_f) ; | |
1103 compass_roll = Phi * 180.0f /PI; | |
1104 sinPhi = sinf(Phi); | |
1105 cosPhi = cosf(Phi); | |
1106 | |
1107 //---- calculate sin and cosine of pitch angle Theta --------------------- | |
1108 Teta = atanf(-(float)accel_DX_f/(accel_DY_f * sinPhi + accel_DZ_f * cosPhi)); | |
1109 compass_pitch = Teta * 180.0f /PI; | |
1110 } | |
1111 | |
1112 | |
1113 // =============================================================================== | |
1114 // compass_calc | |
1115 /// @brief all the fancy stuff first implemented in OSTC3 | |
1116 /// | |
1117 /// input is compass_DX_f, compass_DY_f, compass_DZ_f, accel_DX_f, accel_DY_f, accel_DZ_f | |
1118 /// and compass_CX_f, compass_CY_f, compass_CZ_f | |
1119 /// output is compass_heading, compass_pitch and compass_roll | |
1120 // =============================================================================== | |
1121 void compass_calc(void) | |
1122 { | |
1123 float sinPhi, cosPhi, sinTeta, cosTeta; | |
1124 float Phi, Teta, Psi; | |
1125 int16_t iBfx, iBfy; | |
1126 int16_t iBpx, iBpy, iBpz; | |
1127 | |
1128 //---- Make hard iron correction ----------------------------------------- | |
1129 // Measured magnetometer orientation, measured ok. | |
1130 // From matthias drawing: (X,Y,Z) --> (X,Y,Z) : no rotation. | |
1131 iBpx = compass_DX_f - compass_CX_f; // X | |
1132 iBpy = compass_DY_f - compass_CY_f; // Y | |
1133 iBpz = compass_DZ_f - compass_CZ_f; // Z | |
1134 | |
1135 //---- Calculate sine and cosine of roll angle Phi ----------------------- | |
1136 //sincos(accel_DZ_f, accel_DY_f, &sin, &cos); | |
1137 Phi= atan2f(accel_DY_f, accel_DZ_f) ; | |
1138 compass_roll = Phi * 180.0f /PI; | |
1139 sinPhi = sinf(Phi); | |
1140 cosPhi = cosf(Phi); | |
1141 | |
1142 //---- rotate by roll angle (-Phi) --------------------------------------- | |
1143 iBfy = iBpy * cosPhi - iBpz * sinPhi; | |
1144 iBpz = iBpy * sinPhi + iBpz * cosPhi; | |
1145 //Gz = imul(accel_DY_f, sin) + imul(accel_DZ_f, cos); | |
1146 | |
1147 //---- calculate sin and cosine of pitch angle Theta --------------------- | |
1148 //sincos(Gz, -accel_DX_f, &sin, &cos); // NOTE: changed sin sign. | |
1149 // Teta takes into account roll of computer and sends combination of Y and Z :-) understand now hw 160421 | |
1150 Teta = atanf(-(float)accel_DX_f/(accel_DY_f * sinPhi + accel_DZ_f * cosPhi)); | |
1151 compass_pitch = Teta * 180.0f /PI; | |
1152 sinTeta = sinf(Teta); | |
1153 cosTeta = cosf(Teta); | |
1154 /* correct cosine if pitch not in range -90 to 90 degrees */ | |
1155 if( cosTeta < 0 ) cosTeta = -cosTeta; | |
1156 | |
1157 ///---- de-rotate by pitch angle Theta ----------------------------------- | |
1158 iBfx = iBpx * cosTeta + iBpz * sinTeta; | |
1159 | |
1160 //---- Detect uncalibrated compass --------------------------------------- | |
1161 if( !compass_CX_f && !compass_CY_f && !compass_CZ_f ) | |
1162 { | |
1163 compass_heading = -1; | |
1164 return; | |
1165 } | |
1166 | |
1167 //---- calculate current yaw = e-compass angle Psi ----------------------- | |
1168 // Result in degree (no need of 0.01 deg precision... | |
1169 Psi = atan2f(-iBfy,iBfx); | |
1170 compass_heading = Psi * 180.0f /PI; | |
1171 // Result in 0..360 range: | |
1172 if( compass_heading < 0 ) | |
1173 compass_heading += 360; | |
1174 } | |
1175 | |
1176 | |
1177 // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | |
1178 // // - Calibration - /////////////////////////////////////////////////////////////////////////////////////////////////////// | |
1179 // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | |
1180 | |
1181 /* can be lost during sleep as those are reset with compass_reset_calibration() */ | |
1182 | |
1183 // =============================================================================== | |
1184 // compass_reset_calibration | |
1185 /// @brief all the fancy stuff first implemented in OSTC3 | |
1186 /// | |
1187 /// output is struct g and compass_CX_f, compass_CY_f, compass_CZ_f | |
1188 /// | |
1189 /// @param g: is a struct with crazy stuff like Suuu, Svvv, Svvu, etc. | |
1190 /// all is set to zero here | |
1191 // =============================================================================== | |
1192 void compass_reset_calibration(SCompassCalib *g) | |
1193 { | |
1194 g->compass_N = 0; | |
1195 g->Su = g->Sv = g->Sw = 0.0; | |
1196 g->Suu = g->Svv = g->Sww = g->Suv = g->Suw = g->Svw = 0.0; | |
1197 g->Suuu = g->Svvv = g->Swww = 0.0; | |
1198 g->Suuv = g->Suuw = g->Svvu = g->Svvw = g->Swwu = g->Swwv = 0.0; | |
1199 compass_CX_f = compass_CY_f = compass_CZ_f = 0.0; | |
1200 } | |
1201 | |
1202 | |
1203 // =============================================================================== | |
1204 // compass_add_calibration | |
1205 /// @brief all the fancy stuff first implemented in OSTC3 | |
1206 /// | |
1207 /// input is compass_DX_f, compass_DY_f, compass_DZ_f | |
1208 /// and compass_CX_f, compass_CY_f, compass_CZ_f | |
1209 /// output is struct g | |
1210 /// | |
1211 /// @param g: is a struct with crazy stuff like Suuu, Svvv, Svvu, etc. | |
1212 // =============================================================================== | |
1213 void compass_add_calibration(SCompassCalib *g) | |
1214 { | |
1215 float u, v, w; | |
1216 | |
1217 u = (compass_DX_f - compass_CX_f) / 32768.0f; | |
1218 v = (compass_DY_f - compass_CY_f) / 32768.0f; | |
1219 w = (compass_DZ_f - compass_CZ_f) / 32768.0f; | |
1220 | |
1221 g->compass_N++; | |
1222 g->Su += u; | |
1223 g->Sv += v; | |
1224 g->Sw += w; | |
1225 g->Suv += u*v; | |
1226 g->Suw += u*w; | |
1227 g->Svw += v*w; | |
1228 g->Suu += u*u; | |
1229 g->Suuu += u*u*u; | |
1230 g->Suuv += v*u*u; | |
1231 g->Suuw += w*u*u; | |
1232 g->Svv += v*v; | |
1233 g->Svvv += v*v*v; | |
1234 g->Svvu += u*v*v; | |
1235 g->Svvw += w*v*v; | |
1236 g->Sww += w*w; | |
1237 g->Swww += w*w*w; | |
1238 g->Swwu += u*w*w; | |
1239 g->Swwv += v*w*w; | |
1240 } | |
1241 | |
1242 ////////////////////////////////////////////////////////////////////////////// | |
1243 | |
1244 // =============================================================================== | |
1245 // compass_solve_calibration | |
1246 /// @brief all the fancy stuff first implemented in OSTC3 | |
1247 /// | |
1248 /// input is compass_CX_f, compass_CY_f, compass_CZ_f and g | |
1249 /// output is struct g | |
1250 /// | |
1251 /// @param g: is a struct with crazy stuff like Suuu, Svvv, Svvu, etc. | |
1252 // =============================================================================== | |
1253 void compass_solve_calibration(SCompassCalib *g) | |
1254 { | |
1255 float yu, yv, yw; | |
1256 float delta; | |
1257 float uc, vc, wc; | |
1258 | |
1259 | |
1260 //---- Normalize partial sums -------------------------------------------- | |
1261 // | |
1262 // u, v, w should be centered on the mean value um, vm, wm: | |
1263 // x = u + um, with um = Sx/N | |
1264 // | |
1265 // So: | |
1266 // (u + um)**2 = u**2 + 2u*um + um**2 | |
1267 // Su = 0, um = Sx/N | |
1268 // Sxx = Suu + 2 um Su + N*(Sx/N)**2 = Suu + Sx**2/N | |
1269 // Suu = Sxx - Sx**2/N | |
1270 yu = g->Su/g->compass_N; | |
1271 yv = g->Sv/g->compass_N; | |
1272 yw = g->Sw/g->compass_N; | |
1273 | |
1274 g->Suu -= g->Su*yu; | |
1275 g->Svv -= g->Sv*yv; | |
1276 g->Sww -= g->Sw*yw; | |
1277 | |
1278 // (u + um)(v + vm) = uv + u vm + v um + um vm | |
1279 // Sxy = Suv + N * um vm | |
1280 // Suv = Sxy - N * (Sx/N)(Sy/N); | |
1281 g->Suv -= g->Su*yv; | |
1282 g->Suw -= g->Su*yw; | |
1283 g->Svw -= g->Sv*yw; | |
1284 | |
1285 // (u + um)**3 = u**3 + 3 u**2 um + 3 u um**2 + um**3 | |
1286 // Sxxx = Suuu + 3 um Suu + 3 um**2 Su + N.um**3 | |
1287 // Su = 0, um = Sx/N: | |
1288 // Suuu = Sxxx - 3 Sx*Suu/N - N.(Sx/N)**3 | |
1289 // = Sxxx - 3 Sx*Suu/N - Sx**3/N**2 | |
1290 | |
1291 // (u + um)**2 (v + vm) = (u**2 + 2 u um + um**2)(v + vm) | |
1292 // Sxxy = Suuv + vm Suu + 2 um (Suv + vm Su) + um**2 (Sv + N.vm) | |
1293 // | |
1294 // Su = 0, Sv = 0, vm = Sy/N: | |
1295 // Sxxy = Suuv + vm Suu + 2 um Suv + N um**2 vm | |
1296 // | |
1297 // Suuv = Sxxy - (Sy/N) Suu - 2 (Sx/N) Suv - (Sx/N)**2 Sy | |
1298 // = Sxxy - Suu*Sy/N - 2 Suv*Sx/N - Sx*Sx*Sy/N/N | |
1299 // = Sxxy - (Suu + Sx*Sx/N)*Sy/N - 2 Suv*Sx/N | |
1300 g->Suuu -= (3*g->Suu + g->Su*yu)*yu; | |
1301 g->Suuv -= (g->Suu + g->Su*yu)*yv + 2*g->Suv*yu; | |
1302 g->Suuw -= (g->Suu + g->Su*yu)*yw + 2*g->Suw*yu; | |
1303 | |
1304 g->Svvu -= (g->Svv + g->Sv*yv)*yu + 2*g->Suv*yv; | |
1305 g->Svvv -= (3*g->Svv + g->Sv*yv)*yv; | |
1306 g->Svvw -= (g->Svv + g->Sv*yv)*yw + 2*g->Svw*yv; | |
1307 | |
1308 g->Swwu -= (g->Sww + g->Sw*yw)*yu + 2*g->Suw*yw; | |
1309 g->Swwv -= (g->Sww + g->Sw*yw)*yv + 2*g->Svw*yw; | |
1310 g->Swww -= (3*g->Sww + g->Sw*yw)*yw; | |
1311 | |
1312 //---- Solve the system -------------------------------------------------- | |
1313 // uc Suu + vc Suv + wc Suw = (Suuu + Svvu + Swwu) / 2 | |
1314 // uc Suv + vc Svv + wc Svw = (Suuv + Svvv + Swwv) / 2 | |
1315 // uc Suw + vc Svw + wc Sww = (Suuw + Svvw + Swww) / 2 | |
1316 // Note this is symetric, with a positiv diagonal, hence | |
1317 // it always have a uniq solution. | |
1318 yu = 0.5f * (g->Suuu + g->Svvu + g->Swwu); | |
1319 yv = 0.5f * (g->Suuv + g->Svvv + g->Swwv); | |
1320 yw = 0.5f * (g->Suuw + g->Svvw + g->Swww); | |
1321 delta = g->Suu * (g->Svv * g->Sww - g->Svw * g->Svw) | |
1322 - g->Suv * (g->Suv * g->Sww - g->Svw * g->Suw) | |
1323 + g->Suw * (g->Suv * g->Svw - g->Svv * g->Suw); | |
1324 | |
1325 uc = (yu * (g->Svv * g->Sww - g->Svw * g->Svw) | |
1326 - yv * (g->Suv * g->Sww - g->Svw * g->Suw) | |
1327 + yw * (g->Suv * g->Svw - g->Svv * g->Suw) )/delta; | |
1328 vc = (g->Suu * ( yv * g->Sww - yw * g->Svw) | |
1329 - g->Suv * ( yu * g->Sww - yw * g->Suw) | |
1330 + g->Suw * ( yu * g->Svw - yv * g->Suw) )/delta; | |
1331 wc = (g->Suu * (g->Svv * yw - g->Svw * yv ) | |
1332 - g->Suv * (g->Suv * yw - g->Svw * yu ) | |
1333 + g->Suw * (g->Suv * yv - g->Svv * yu ) )/delta; | |
1334 | |
1335 // Back to uncentered coordinates: | |
1336 // xc = um + uc | |
1337 uc = g->Su/g->compass_N + compass_CX_f/32768.0f + uc; | |
1338 vc = g->Sv/g->compass_N + compass_CY_f/32768.0f + vc; | |
1339 wc = g->Sw/g->compass_N + compass_CZ_f/32768.0f + wc; | |
1340 | |
1341 // Then save the new calibrated center: | |
1342 compass_CX_f = (short)(32768 * uc); | |
1343 compass_CY_f = (short)(32768 * vc); | |
1344 compass_CZ_f = (short)(32768 * wc); | |
1345 } | |
1346 | |
1347 | |
1348 // =============================================================================== | |
1349 // compass_calib | |
1350 /// @brief the main loop for calibration | |
1351 /// output is compass_CX_f, compass_CY_f, compass_CZ_f and g | |
1352 /// 160704 removed -4096 limit for LSM303D | |
1353 /// | |
1354 /// @return always 0 | |
1355 // =============================================================================== | |
1356 int compass_calib_common(void) | |
1357 { | |
410
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1358 SCompassCalib g; |
38 | 1359 |
1360 // Starts with no calibration at all: | |
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1361 compass_reset_calibration(&g); |
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1362 uint32_t tickstart = 0; |
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1363 tickstart = HAL_GetTick(); |
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1364 /* run calibration for one minute */ |
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1365 while(time_elapsed_ms(tickstart,HAL_GetTick()) < 60000) |
38 | 1366 { |
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1367 while((SPI_Evaluate_RX_Data() == 0) && (time_elapsed_ms(tickstart,HAL_GetTick()) < 60000)) |
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1368 { |
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1369 HAL_Delay(1); |
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1370 } |
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1371 compass_read(); |
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1372 acceleration_read(); |
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1373 compass_calc_roll_pitch_only(); |
38 | 1374 |
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1375 if((hardwareCompass == compass_generation1 ) //HMC5883L) |
38 | 1376 &&((compass_DX_f == -4096) || |
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1377 (compass_DY_f == -4096) || |
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1378 (compass_DZ_f == -4096) )) |
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1379 { |
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1380 if(compass_gain == 0) |
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1381 return -1; |
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1382 compass_gain--; |
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1383 compass_init(1, compass_gain); |
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1384 compass_reset_calibration(&g); |
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1385 continue; |
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1386 } |
38 | 1387 |
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1388 copyCompassDataDuringCalibration(compass_DX_f,compass_DY_f,compass_DZ_f); |
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1389 compass_add_calibration(&g); |
104 | 1390 } |
38 | 1391 |
1392 compass_solve_calibration(&g); | |
1393 | |
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1394 tfull32 dataBlock[4]; |
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1395 dataBlock[0].Word16.low16 = compass_CX_f; |
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1396 dataBlock[0].Word16.hi16 = compass_CY_f; |
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1397 dataBlock[1].Word16.low16 = compass_CZ_f; |
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1398 dataBlock[1].Word16.hi16 = 0xFFFF; |
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1399 dataBlock[2].Full32 = 0x7FFFFFFF; |
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1400 dataBlock[3].Full32 = 0x7FFFFFFF; |
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1401 BFA_writeDataBlock((uint32_t *)dataBlock); |
38 | 1402 |
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1403 return 0; |
38 | 1404 } |
1405 |