1 /**
2 * @file APDS_9960.c
3 * @brief APDS-9960传感器的源文件
4 * @version 0.1
5 * @date 2019-07-02
6 *
7 * @copyright Copyright (c) 2019 Chipintelli Technology Co., Ltd.
8 *
9 */
10 /*-----------------------------------------------------------------------------
11 header
12 -----------------------------------------------------------------------------*/
13 #include "string.h"
14 #include "APDS_9960.h"
15 #include "ci110x_i2c.h"
16 #include "ci110x_gpio.h"
17 #include "ci110x_scu.h"
18 #include "ci_misc.h"
19 #include "ci_log.h"
20
21 /*-----------------------------------------------------------------------------
22 define
23 -----------------------------------------------------------------------------*/
24 #define DEBUG 0
25
26 /* APDS-9960 I2C address */
27 #define APDS9960_I2C_ADDR 0x39/*!< APDS-9960传感器IIC总线地址 */
28
29 /* Gesture parameters */
30 #define GESTURE_THRESHOLD_OUT 10
31 #define GESTURE_SENSITIVITY_1 50
32 #define GESTURE_SENSITIVITY_2 20
33
34 /* Error code for returned values */
35 #define ERROR 0xFF
36
37 /* Acceptable device IDs */
38 #define APDS9960_ID_1 0xAB
39 #define APDS9960_ID_2 0x9C
40
41 /* Misc parameters */
42 #define FIFO_PAUSE_TIME 30 /*!< Wait period (ms) between FIFO reads */
43
44 /* APDS-9960 register addresses */
45 #define APDS9960_ENABLE 0x80
46 #define APDS9960_ATIME 0x81
47 #define APDS9960_WTIME 0x83
48 #define APDS9960_AILTL 0x84
49 #define APDS9960_AILTH 0x85
50 #define APDS9960_AIHTL 0x86
51 #define APDS9960_AIHTH 0x87
52 #define APDS9960_PILT 0x89
53 #define APDS9960_PIHT 0x8B
54 #define APDS9960_PERS 0x8C
55 #define APDS9960_CONFIG1 0x8D
56 #define APDS9960_PPULSE 0x8E
57 #define APDS9960_CONTROL 0x8F
58 #define APDS9960_CONFIG2 0x90
59 #define APDS9960_ID 0x92
60 #define APDS9960_STATUS 0x93
61 #define APDS9960_CDATAL 0x94
62 #define APDS9960_CDATAH 0x95
63 #define APDS9960_RDATAL 0x96
64 #define APDS9960_RDATAH 0x97
65 #define APDS9960_GDATAL 0x98
66 #define APDS9960_GDATAH 0x99
67 #define APDS9960_BDATAL 0x9A
68 #define APDS9960_BDATAH 0x9B
69 #define APDS9960_PDATA 0x9C
70 #define APDS9960_POFFSET_UR 0x9D
71 #define APDS9960_POFFSET_DL 0x9E
72 #define APDS9960_CONFIG3 0x9F
73 #define APDS9960_GPENTH 0xA0
74 #define APDS9960_GEXTH 0xA1
75 #define APDS9960_GCONF1 0xA2
76 #define APDS9960_GCONF2 0xA3
77 #define APDS9960_GOFFSET_U 0xA4
78 #define APDS9960_GOFFSET_D 0xA5
79 #define APDS9960_GOFFSET_L 0xA7
80 #define APDS9960_GOFFSET_R 0xA9
81 #define APDS9960_GPULSE 0xA6
82 #define APDS9960_GCONF3 0xAA
83 #define APDS9960_GCONF4 0xAB
84 #define APDS9960_GFLVL 0xAE
85 #define APDS9960_GSTATUS 0xAF
86 #define APDS9960_IFORCE 0xE4
87 #define APDS9960_PICLEAR 0xE5
88 #define APDS9960_CICLEAR 0xE6
89 #define APDS9960_AICLEAR 0xE7
90 #define APDS9960_GFIFO_U 0xFC
91 #define APDS9960_GFIFO_D 0xFD
92 #define APDS9960_GFIFO_L 0xFE
93 #define APDS9960_GFIFO_R 0xFF
94
95 /* Bit fields */
96 #define APDS9960_PON 0x01
97 #define APDS9960_AEN 0x02
98 #define APDS9960_PEN 0x04
99 #define APDS9960_WEN 0x08
100 #define APSD9960_AIEN 0x10
101 #define APDS9960_PIEN 0x20
102 #define APDS9960_GEN 0x40
103 #define APDS9960_GVALID 0x01
104
105 /* On/Off definitions */
106 #define OFF 0
107 #define ON 1
108
109 /* Acceptable parameters for set_mode */
110 #define POWER 0
111 #define AMBIENT_LIGHT 1
112 #define PROXIMITY 2
113 #define WAIT 3
114 #define AMBIENT_LIGHT_INT 4
115 #define PROXIMITY_INT 5
116 #define GESTURE 6
117 #define ALL 7
118
119 /* LED Drive values */
120 #define LED_DRIVE_100MA 0
121 #define LED_DRIVE_50MA 1
122 #define LED_DRIVE_25MA 2
123 #define LED_DRIVE_12_5MA 3
124
125 /* Proximity Gain (PGAIN) values */
126 #define PGAIN_1X 0
127 #define PGAIN_2X 1
128 #define PGAIN_4X 2
129 #define PGAIN_8X 3
130
131 /* ALS Gain (AGAIN) values */
132 #define AGAIN_1X 0
133 #define AGAIN_4X 1
134 #define AGAIN_16X 2
135 #define AGAIN_64X 3
136
137 /* Gesture Gain (GGAIN) values */
138 #define GGAIN_1X 0
139 #define GGAIN_2X 1
140 #define GGAIN_4X 2
141 #define GGAIN_8X 3
142
143 /* LED Boost values */
144 #define LED_BOOST_100 0
145 #define LED_BOOST_150 1
146 #define LED_BOOST_200 2
147 #define LED_BOOST_300 3
148
149 /* Gesture wait time values */
150 #define GWTIME_0MS 0
151 #define GWTIME_2_8MS 1
152 #define GWTIME_5_6MS 2
153 #define GWTIME_8_4MS 3
154 #define GWTIME_14_0MS 4
155 #define GWTIME_22_4MS 5
156 #define GWTIME_30_8MS 6
157 #define GWTIME_39_2MS 7
158
159 /* Default values */
160 #define DEFAULT_ATIME 219 // 103ms
161 #define DEFAULT_WTIME 246 // 27ms
162 #define DEFAULT_PROX_PPULSE 0x87 // 16us, 8 pulses
163 #define DEFAULT_GESTURE_PPULSE 0x89 // 16us, 10 pulses
164 #define DEFAULT_POFFSET_UR 0 // 0 offset
165 #define DEFAULT_POFFSET_DL 0 // 0 offset
166 #define DEFAULT_CONFIG1 0x60 // No 12x wait (WTIME) factor
167 #define DEFAULT_LDRIVE LED_DRIVE_100MA
168 #define DEFAULT_PGAIN PGAIN_4X
169 #define DEFAULT_AGAIN AGAIN_4X
170 #define DEFAULT_PILT 0 // Low proximity threshold
171 #define DEFAULT_PIHT 50 // High proximity threshold
172 #define DEFAULT_AILT 0xFFFF // Force interrupt for calibration
173 #define DEFAULT_AIHT 0
174 #define DEFAULT_PERS 0x11 // 2 consecutive prox or ALS for int.
175 #define DEFAULT_CONFIG2 0x01 // No saturation interrupts or LED boost
176 #define DEFAULT_CONFIG3 0 // Enable all photodiodes, no SAI
177 #define DEFAULT_GPENTH 40 // Threshold for entering gesture mode
178 #define DEFAULT_GEXTH 30 // Threshold for exiting gesture mode
179 #define DEFAULT_GCONF1 0x40 // 4 gesture events for int., 1 for exit
180 #define DEFAULT_GGAIN GGAIN_4X
181 #define DEFAULT_GLDRIVE LED_DRIVE_100MA
182 #define DEFAULT_GWTIME GWTIME_2_8MS
183 #define DEFAULT_GOFFSET 0 // No offset scaling for gesture mode
184 #define DEFAULT_GPULSE 0xC9 // 32us, 10 pulses
185 #define DEFAULT_GCONF3 0 // All photodiodes active during gesture
186 #define DEFAULT_GIEN 0 // Disable gesture interrupts
187
188 /*-----------------------------------------------------------------------------
189 extern
190 -----------------------------------------------------------------------------*/
191
192 /*-----------------------------------------------------------------------------
193 struct / enum / union
194 -----------------------------------------------------------------------------*/
195 /* Direction definitions */
196 enum
197 {
198 DIR_NONE,
199 DIR_LEFT,
200 DIR_RIGHT,
201 DIR_UP,
202 DIR_DOWN,
203 DIR_NEAR,
204 DIR_FAR,
205 DIR_ALL
206 };
207
208 /* State definitions */
209 enum
210 {
211 NA_STATE,
212 NEAR_STATE,
213 FAR_STATE,
214 ALL_STATE
215 };
216 /* Container for gesture data */
217 typedef struct
218 {
219 uint8_t u_data[32];
220 uint8_t d_data[32];
221 uint8_t l_data[32];
222 uint8_t r_data[32];
223 uint8_t index;
224 uint8_t total_gestures;
225 uint8_t in_threshold;
226 uint8_t out_threshold;
227 }gesture_data_type;
228
229 /*-----------------------------------------------------------------------------
230 global
231 -----------------------------------------------------------------------------*/
232 /* Members */
233 gesture_data_type gesture_data_;
234
235 int gesture_ud_delta_;
236 int gesture_lr_delta_;
237 int gesture_ud_count_;
238 int gesture_lr_count_;
239 int gesture_near_count_;
240 int gesture_far_count_;
241 int gesture_state_;
242 int gesture_motion_;
243
244 void (*apds_callback)(void);
245
246 /*-----------------------------------------------------------------------------
247 declare
248 -----------------------------------------------------------------------------*/
249
250 /*-----------------------------------------------------------------------------
251 function
252 -----------------------------------------------------------------------------*/
253 static void delay_ms(int ms)
254 {
255 int i=0;
256 while(ms--)
257 {
258 for(i=0;i<0x1A80;i++);
259 }
260 }
261
262 /**
263 * @brief Constructor - Instantiates sparkfun_apds9960 object
264 */
265 void sparkfun_apds9960(void)
266 {
267 gesture_ud_delta_ = 0;
268 gesture_lr_delta_ = 0;
269 gesture_ud_count_ = 0;
270 gesture_lr_count_ = 0;
271 gesture_near_count_ = 0;
272 gesture_far_count_ = 0;
273 gesture_state_ = 0;
274 gesture_motion_ = DIR_NONE;
275 }
276
277 /**
278 * @brief IIC 读取一个byte
279 *
280 * @param reg
281 * @param val
282 * @return true
283 * @return false
284 */
285 int8_t wire_read_data_byte(uint8_t reg,uint8_t *val)
286 {
287 char buf[256] = {0};
288 struct i2c_client client = {0};
289 client.flags = 1;
290 client.addr = APDS9960_I2C_ADDR;
291 strcpy(client.name,"apds9960");
292 buf[0] = reg;
293 i2c_master_recv(IIC1,&client,buf,2);
294 *val = buf[0];
295 delay_ms(5);
296 return RETURN_OK;
297 }
298
299 /**
300 * @brief IIC 写入一个byte
301 *
302 * @param reg
303 * @param val
304 * @return true
305 * @return false
306 */
307 int8_t wire_write_data_byte(uint8_t reg,uint8_t val)
308 {
309 char buf[256] = {0};
310 struct i2c_client client = {0};
311 client.flags = 0;
312 client.addr = APDS9960_I2C_ADDR;
313 strcpy(client.name,"apds9960");
314 buf[0] = reg;
315 buf[1] = val;
316 i2c_master_send(IIC1,&client,buf,2);
317 delay_ms(5);
318 return RETURN_OK;
319 }
320
321 /**
322 * @brief IIC 读取多个byte
323 *
324 * @param reg
325 * @param data
326 * @param len
327 * @return int8_t
328 */
329 int8_t wire_read_data_block(uint8_t reg,uint8_t *data,uint32_t len)
330 {
331 char buf[256] = {0};
332 struct i2c_client client = {0};
333 client.flags = 1;
334 client.addr = APDS9960_I2C_ADDR;
335 strcpy(client.name,"apds9960");
336 buf[0] = reg;
337 i2c_master_recv(IIC1,&client,buf,len + 1);
338 memcpy(data,buf,len);
339 delay_ms(5);
340 return len;
341 }
342
343 /**
344 * @brief IIC 写入多个byte
345 *
346 * @param reg
347 * @param data
348 * @param len
349 * @return int8_t
350 */
351 int8_t wire_write_data_block(uint8_t reg,uint8_t *data,uint32_t len)
352 {
353 char buf[256] = {0};
354 struct i2c_client client = {0};
355 client.flags = 0;
356 client.addr = APDS9960_I2C_ADDR;
357 strcpy(client.name,"apds9960");
358 buf[0] = reg;
359 strncpy(&buf[1],(char const*)data,len);
360 i2c_master_send(IIC1,&client,buf,len + 1);
361 delay_ms(5);
362 return len;
363 }
364
365 /**
366 * @brief Reads and returns the contents of the ENABLE register
367 *
368 * @return Contents of the ENABLE register. 0xFF if error.
369 */
370 uint8_t get_mode(void)
371 {
372 uint8_t enable_value;
373
374 /* Read current ENABLE register */
375 if( !wire_read_data_byte(APDS9960_ENABLE, &enable_value) )
376 {
377 return ERROR;
378 }
379
380 return enable_value;
381 }
382
383 /**
384 * @brief Enables or disables a feature in the APDS-9960
385 *
386 #define POWER 0
387 #define AMBIENT_LIGHT 1
388 #define PROXIMITY 2
389 #define WAIT 3
390 #define AMBIENT_LIGHT_INT 4
391 #define PROXIMITY_INT 5
392 #define GESTURE 6
393 #define ALL 7
394 * @param[in] mode which feature to enable
395 * @param[in] enable ON (1) or OFF (0)
396 * @return True if operation success. False otherwise.
397 mode = ALL 7 enable = OFF 0
398 */
399 int8_t set_mode(int8_t mode, uint8_t enable)
400 {
401 uint8_t reg_val;
402
403 /* Read current ENABLE register */
404 reg_val = get_mode();
405 mprintf("First_setMode_regval = %.2x
",reg_val);//打印读取到的使能寄存器的值 0x80 = 0x4d
406 if( reg_val == ERROR ) {//如果读取到的值为0xFF，则错误
407 return RETURN_ERR;
408 }
409
410 /* Change bit(s) in ENABLE register */
411 enable = enable & 0x01;
412 if((mode >= 0) && (mode <= 6)) //使能或失能某个位
413 {
414 if(enable) //使能
415 {
416 reg_val |= (1 << mode);
417 }
418 else //失能
419 {
420 reg_val &= ~(1 << mode);
421 }
422 }
423 else if( mode == ALL ) //使能全部
424 {
425 if (enable)
426 {
427 reg_val = 0x7F;//0x80=0x7F 全部使能
428 }
429 else //全部使能
430 {
431 reg_val = 0x00;//0x80=0x00
432 mprintf("0x80 = 0x00 all disable
");
433 }
434 }
435
436 mprintf("Last_setMode_regval = %.2x
",reg_val);//打印读取到的使能寄存器的值 0x80 = 0x4d
437 /* Write value back to ENABLE register */
438 if( !wire_write_data_byte(APDS9960_ENABLE, reg_val) )
439 {
440 return RETURN_ERR;
441 }
442
443 return RETURN_OK;
444 }
445
446 /**
447 * @brief Determines if there is a gesture available for reading
448 * 确定是否有用于阅读的手势
449 * @return True if gesture available. False otherwise.
450 */
451 int8_t is_gesture_available(void)
452 {
453 uint8_t val;
454
455 /*读0xAF*/
456 if( !wire_read_data_byte(APDS9960_GSTATUS, &val) )
457 {
458 return ERROR;
459 }
460 mprintf("AF_val = 0x%.2x
",val);
461 /* Shift and mask out GVALID bit */
462 val &= APDS9960_GVALID;//判断0xAF最低位GVALID是否为1
463
464 /* Return RETURN_OK/RETURN_ERR based on GVALID bit */
465 if( val == 1)
466 {
467 return RETURN_OK;
468 }
469 else
470 {
471 return RETURN_ERR;
472 }
473 }
474
475 /**
476 * 处理原始手势数据确定滑动方向
477 *
478 * @return True if near or far state seen. False otherwise.
479 */
480 int8_t process_gesture_data(void)
481 {
482 uint8_t u_first = 0;
483 uint8_t d_first = 0;
484 uint8_t l_first = 0;
485 uint8_t r_first = 0;
486 uint8_t u_last = 0;
487 uint8_t d_last = 0;
488 uint8_t l_last = 0;
489 uint8_t r_last = 0;
490 int ud_ratio_first;
491 int lr_ratio_first;
492 int ud_ratio_last;
493 int lr_ratio_last;
494 int ud_delta;
495 int lr_delta;
496 int i;
497
498 /* If we have less than 4 total gestures, that's not enough */
499 if( gesture_data_.total_gestures <= 4 )
500 {
501 return RETURN_ERR;
502 }
503
504 /* Check to make sure our data isn't out of bounds */
505 if( (gesture_data_.total_gestures <= 32) &&
506 (gesture_data_.total_gestures > 0) )
507 {
508
509 /* Find the first value in U/D/L/R above the threshold */
510 for( i = 0; i < gesture_data_.total_gestures; i++ )
511 {
512 if( (gesture_data_.u_data[i] > GESTURE_THRESHOLD_OUT) &&
513 (gesture_data_.d_data[i] > GESTURE_THRESHOLD_OUT) &&
514 (gesture_data_.l_data[i] > GESTURE_THRESHOLD_OUT) &&
515 (gesture_data_.r_data[i] > GESTURE_THRESHOLD_OUT) )
516 {
517
518 u_first = gesture_data_.u_data[i];
519 d_first = gesture_data_.d_data[i];
520 l_first = gesture_data_.l_data[i];
521 r_first = gesture_data_.r_data[i];
522 #if DEBUG
523 mprintf("*********************************************
");
524 mprintf("Finding first:
");
525 mprintf("u_first = %d
",u_first);
526 mprintf("d_first = %d
",d_first);
527 mprintf("l_first = %d
",l_first);
528 mprintf("r_first = %d
",r_first);
529 mprintf("First i = %d
",i);
530 mprintf("*********************************************
");
531 #endif
532 break;
533 }
534 }
535 /* If one of the _first values is 0, then there is no good data */
536 if( (u_first == 0) || (d_first == 0) ||
537 (l_first == 0) || (r_first == 0) )
538 {
539
540 return RETURN_ERR;
541 }
542 /* Find the last value in U/D/L/R above the threshold */
543 for( i = gesture_data_.total_gestures - 1; i >= 0; i-- )
544 {
545 if( (gesture_data_.u_data[i] > GESTURE_THRESHOLD_OUT) &&
546 (gesture_data_.d_data[i] > GESTURE_THRESHOLD_OUT) &&
547 (gesture_data_.l_data[i] > GESTURE_THRESHOLD_OUT) &&
548 (gesture_data_.r_data[i] > GESTURE_THRESHOLD_OUT) )
549 {
550
551 u_last = gesture_data_.u_data[i];
552 d_last = gesture_data_.d_data[i];
553 l_last = gesture_data_.l_data[i];
554 r_last = gesture_data_.r_data[i];
555 #if DEBUG
556 mprintf("*********************************************
");
557 mprintf("Finding last:
");
558 mprintf("u_last = %d
",u_last);
559 mprintf("d_last = %d
",d_last);
560 mprintf("l_last = %d
",l_last);
561 mprintf("r_last = %d
",r_last);
562 mprintf("Last i = %d
",i);
563 mprintf("*********************************************
");
564 #endif
565 break;
566 }
567 }
568 }
569
570 /* Calculate the first vs. last ratio of up/down and left/right */
571 ud_ratio_first = ((u_first - d_first) * 100) / (u_first + d_first);
572 lr_ratio_first = ((l_first - r_first) * 100) / (l_first + r_first);
573 ud_ratio_last = ((u_last - d_last) * 100) / (u_last + d_last);
574 lr_ratio_last = ((l_last - r_last) * 100) / (l_last + r_last);
575
576 #if DEBUG
577 mprintf("===============================================
");
578 mprintf("first vs last ratio :
");
579 mprintf("ud_ratio_first = %d
",ud_ratio_first);
580 mprintf("lr_ratio_first = %d
",lr_ratio_first);
581 mprintf("ud_ratio_last = %d
",ud_ratio_last);
582 mprintf("lr_ratio_last = %d
",lr_ratio_last);
583 mprintf("===============================================
");
584 #endif
585 /* Determine the difference between the first and last ratios */
586 ud_delta = ud_ratio_last - ud_ratio_first;
587 lr_delta = lr_ratio_last - lr_ratio_first;
588 #if DEBUG
589
590 mprintf("===============================================
");
591 mprintf("Delta:
");
592 mprintf("ud_delta = %d
",ud_delta);
593 mprintf("lr_delta = %d
",lr_delta);
594 mprintf("===============================================
");
595 #endif
596
597 /* Accumulate the UD and LR delta values */
598 gesture_ud_delta_ += ud_delta;
599 gesture_lr_delta_ += lr_delta;
600
601 #if DEBUG
602 mprintf("===============================================
");
603 mprintf("Accumulate Delta:
");
604 mprintf("gesture_ud_delta_ = %d
",gesture_ud_delta_);
605 mprintf("gesture_lr_delta_ = %d
",gesture_lr_delta_);
606 mprintf("===============================================
");
607 #endif
608 /* Determine U/D gesture */
609 if( gesture_ud_delta_ >= GESTURE_SENSITIVITY_1 ) //50
610 {
611 gesture_ud_count_ = 1;//U-->D
612 mprintf("U--->D
");
613 }
614 else if( gesture_ud_delta_ <= -GESTURE_SENSITIVITY_1 )
615 {
616 gesture_ud_count_ = -1;
617 mprintf("D--->U
");
618 }
619 else
620 {
621 gesture_ud_count_ = 0;
622 }
623
624 /* Determine L/R gesture */
625 if( gesture_lr_delta_ >= GESTURE_SENSITIVITY_1 )
626 {
627 gesture_lr_count_ = 1;
628 mprintf("L--->R
");
629 }
630 else if( gesture_lr_delta_ <= -GESTURE_SENSITIVITY_1 )
631 {
632 gesture_lr_count_ = -1;
633 mprintf("R--->L
");
634 }
635 else
636 {
637 gesture_lr_count_ = 0;
638 }
639 /* Determine Near/Far gesture */
640 if( (gesture_ud_count_ == 0) && (gesture_lr_count_ == 0) )
641 {
642 if( (abs(ud_delta) < GESTURE_SENSITIVITY_2) && (abs(lr_delta) < GESTURE_SENSITIVITY_2) ) //20
643 {
644 if( (ud_delta == 0) && (lr_delta == 0) )
645 {
646 gesture_near_count_++;
647 }
648 else if( (ud_delta != 0) || (lr_delta != 0) )
649 {
650 gesture_far_count_++;
651 }
652
653 if( (gesture_near_count_ >= 10) && (gesture_far_count_ >= 2) )
654 {
655 if( (ud_delta == 0) && (lr_delta == 0) )
656 {
657 gesture_state_ = NEAR_STATE;
658 }
659 else if( (ud_delta != 0) && (lr_delta != 0) )
660 {
661 gesture_state_ = FAR_STATE;
662 }
663 return RETURN_OK;
664 }
665 }
666 }
667 else
668 {
669 if( (abs((int)ud_delta) < GESTURE_SENSITIVITY_2) && (abs((int)lr_delta) < GESTURE_SENSITIVITY_2) )
670 {
671
672 if( (ud_delta == 0) && (lr_delta == 0) )
673 {
674 gesture_near_count_++;
675 }
676
677 if( gesture_near_count_ >= 10 )
678 {
679 gesture_ud_count_ = 0;
680 gesture_lr_count_ = 0;
681 gesture_ud_delta_ = 0;
682 gesture_lr_delta_ = 0;
683 }
684 }
685 }
686 #if DEBUG
687 mprintf("===============================================
");
688 mprintf("UD_CT = %d
",gesture_ud_count_);
689 mprintf("LR_CT = %d
",gesture_lr_count_);
690 mprintf("NEAR_CT = %d
",gesture_near_count_);
691 mprintf("FAR_CT = %d
",gesture_far_count_);
692 mprintf("===============================================
");
693 #endif
694 return RETURN_ERR;
695 }
696
697 /**
698 * 确定滑动方向、远近状态
699 *
700 * @return True if near/far event. False otherwise.
701 */
702 int8_t decode_gesture(void)
703 {
704 /* Return if near or far event is detected */
705 if( gesture_state_ == NEAR_STATE ) //手势状态 = 进距离
706 {
707 gesture_motion_ = DIR_NEAR;
708 return RETURN_OK;
709 }
710 else if ( gesture_state_ == FAR_STATE ) //手势状态 = 远距离
711 {
712 gesture_motion_ = DIR_FAR;
713 return RETURN_OK;
714 }
715
716 /* Determine swipe direction 确定滑动方向 */
717 if( (gesture_ud_count_ == -1) && (gesture_lr_count_ == 0) )
718 {
719 gesture_motion_ = DIR_UP;
720 }
721 else if( (gesture_ud_count_ == 1) && (gesture_lr_count_ == 0) )
722 {
723 gesture_motion_ = DIR_DOWN;
724 }
725 else if( (gesture_ud_count_ == 0) && (gesture_lr_count_ == 1) )
726 {
727 gesture_motion_ = DIR_RIGHT;
728 }
729 else if( (gesture_ud_count_ == 0) && (gesture_lr_count_ == -1) )
730 {
731 gesture_motion_ = DIR_LEFT;
732 }
733 else if( (gesture_ud_count_ == -1) && (gesture_lr_count_ == 1) )
734 {
735 if( abs(gesture_ud_delta_) > abs(gesture_lr_delta_) )
736 {
737 gesture_motion_ = DIR_UP;
738 }
739 else
740 {
741 gesture_motion_ = DIR_RIGHT;
742 }
743 }
744 else if( (gesture_ud_count_ == 1) && (gesture_lr_count_ == -1) )
745 {
746 if( abs(gesture_ud_delta_) > abs(gesture_lr_delta_) )
747 {
748 gesture_motion_ = DIR_DOWN;
749 }
750 else
751 {
752 gesture_motion_ = DIR_LEFT;
753 }
754 }
755 else if( (gesture_ud_count_ == -1) && (gesture_lr_count_ == -1) )
756 {
757 if( abs(gesture_ud_delta_) > abs(gesture_lr_delta_) )
758 {
759 gesture_motion_ = DIR_UP;
760 }
761 else
762 {
763 gesture_motion_ = DIR_LEFT;
764 }
765 }
766 else if( (gesture_ud_count_ == 1) && (gesture_lr_count_ == 1) )
767 {
768 if( abs(gesture_ud_delta_) > abs(gesture_lr_delta_) )
769 {
770 gesture_motion_ = DIR_DOWN;
771 }
772 else
773 {
774 gesture_motion_ = DIR_RIGHT;
775 }
776 }
777 else
778 {
779 return RETURN_ERR;
780 }
781 return RETURN_OK;
782 }
783
784 /*******************************************************************************
785 * High-level gesture controls
786 ******************************************************************************/
787
788 /**
789 * @brief Resets all the parameters in the gesture data member
790 */
791 void reset_gesture_parameters(void)
792 {
793 gesture_data_.index = 0;
794 gesture_data_.total_gestures = 0;
795
796 gesture_ud_delta_ = 0;
797 gesture_lr_delta_ = 0;
798
799 gesture_ud_count_ = 0;
800 gesture_lr_count_ = 0;
801
802 gesture_near_count_ = 0;
803 gesture_far_count_ = 0;
804
805 gesture_state_ = 0;
806 gesture_motion_ = DIR_NONE;
807 }
808
809 /**
810 * @brief Processes a gesture event and returns best guessed gesture
811 * 处理一个手势事件并返回最佳猜测手势
812 * @return Number corresponding to gesture. -1 on error.
813 */
814 int read_gesture(void)
815 {
816 uint8_t fifo_level = 0;
817 int8_t bytes_read = 0;
818 uint8_t fifo_data[128];
819 uint8_t gstatus;
820 int motion;
821 int i;
822
823 /* Get the contents of the STATUS register. Is data still valid? */
824 if( !wire_read_data_byte(APDS9960_GSTATUS, &gstatus) )
825 {
826 return ERROR;
827 }
828 /* Make sure that power and gesture is on and data is valid */
829 if(!is_gesture_available()||!(get_mode() & 0x41) )
830 {
831 return DIR_NONE;
832 }
833
834 /* Keep looping as long as gesture data is valid */
835 while(1)
836 {
837 /* Wait some time to collect next batch of FIFO data */
838 delay_ms(FIFO_PAUSE_TIME);
839
840 /* Get the contents of the STATUS register. Is data still valid? */
841 if( !wire_read_data_byte(APDS9960_GSTATUS, &gstatus) )
842 {
843 return ERROR;
844 }
845 mprintf("gstatus = %.2x
",gstatus);
846
847 /* If we have valid data, read in FIFO */
848 if((gstatus & APDS9960_GVALID) == APDS9960_GVALID)
849 {
850
851 /* Read the current FIFO level */
852 if( !wire_read_data_byte(APDS9960_GFLVL, &fifo_level) )
853 {
854 return ERROR;
855 }
856 /* If there's stuff in the FIFO, read it into our data block */
857 if( fifo_level > 0)
858 {
859 bytes_read = wire_read_data_block( APDS9960_GFIFO_U,
860 (uint8_t*)fifo_data,
861 (fifo_level * 4) );
862
863 #if DEBUG
864 for(i = 0;i < fifo_level * 4;i = i + 4)
865 {
866 mprintf("=========================
");
867 mprintf("%d fifo_level data
",i/4);
868 mprintf("U = 0x%.2x ",fifo_data[i+0]);
869 mprintf("D = 0x%.2x ",fifo_data[i+1]);
870 mprintf("L = 0x%.2x ",fifo_data[i+2]);
871 mprintf("R = 0x%.2x
",fifo_data[i+3]);
872 mprintf("=========================
");
873 }
874 mprintf("fifo_level = %d
",fifo_level);
875 mprintf("bytes_read = %d
",bytes_read);
876 #endif
877 if(bytes_read == -1)
878 {
879 return ERROR;
880 }
881
882 /* If at least 1 set of data, sort the data into U/D/L/R */
883 if( bytes_read >= 4 )
884 {
885 for( i = 0; i < bytes_read; i += 4 )
886 {
887 gesture_data_.u_data[gesture_data_.index] =
888 fifo_data[i + 0];
889 gesture_data_.d_data[gesture_data_.index] =
890 fifo_data[i + 1];
891 gesture_data_.l_data[gesture_data_.index] =
892 fifo_data[i + 2];
893 gesture_data_.r_data[gesture_data_.index] =
894 fifo_data[i + 3];
895 gesture_data_.index++;
896 gesture_data_.total_gestures++;
897 }
898 mprintf("gesture_data_.index = %d
",gesture_data_.index);
899 mprintf("gesture_data_.total_gestures = %d
",gesture_data_.total_gestures);
900
901 /* Filter and process gesture data. Decode near/far state */
902 if(process_gesture_data() )
903 {
904 if(decode_gesture() )
905 {
906 mprintf("gesture_motion_ = %d
",gesture_motion_);
907 }
908 }
909
910 /* Reset data */
911 gesture_data_.index = 0;
912 gesture_data_.total_gestures = 0;
913 }
914 }
915 }
916 else
917 {
918 /* Determine best guessed gesture and clean up */
919 delay_ms(FIFO_PAUSE_TIME);
920 decode_gesture();
921 motion = gesture_motion_;
922 reset_gesture_parameters();
923 return motion;
924 }
925 }
926 }
927
928 /**
929 * Turn the APDS-9960 on
930 *
931 * @return True if operation successful. False otherwise.
932 */
933 int8_t enable_power(void)
934 {
935 if( !set_mode(POWER, 1) )
936 {
937 return RETURN_ERR;
938 }
939
940 return RETURN_OK;
941 }
942
943 /**
944 * Turn the APDS-9960 off
945 *
946 * @return True if operation successful. False otherwise.
947 */
948 int8_t disable_power(void)
949 {
950 if( !set_mode(POWER, 0) )
951 {
952 return RETURN_ERR;
953 }
954
955 return RETURN_OK;
956 }
957
958 /**
959 * @brief Sets the LED current boost value
960 * 设置LED当前的升压值
961 * Value Boost Current
962 * 0 100%
963 * 1 150%
964 * 2 200%
965 * 3 300%
966 *
967 * @param[in] drive the value (0-3) for current boost (100-300%)
968 * @return True if operation successful. False otherwise.
969 */
970 int8_t set_led_boost(uint8_t boost)
971 {
972 uint8_t val;
973
974 /* Read value from CONFIG2 register */
975 if( !wire_read_data_byte(APDS9960_CONFIG2, &val) ) {
976 return RETURN_ERR;
977 }
978
979 /* Set bits in register to given value */
980 boost &= 0x03;
981 boost = boost << 4;
982 val &= 0xCF;
983 val |= boost;
984
985 /* Write register value back into CONFIG2 register */
986 if( !wire_write_data_byte(APDS9960_CONFIG2, val) ) {
987 return RETURN_ERR;
988 }
989
990 return RETURN_OK;
991 }
992
993
994
995
996
997 /***********************************************************************************
998 设置手势接近进入阀值
999 APDS9960_GPENTH = threshold = 40
1000 0xA0 = 40
1001 0xA0的bit4必须设为0
1002 手势接近阀值会与接近数据PDATA进行比较并决定是否进入手势状态机
1003 ***********************************************************************************/
1004 int8_t set_gesture_enter_thresh(uint8_t threshold)
1005 {
1006 if( !wire_write_data_byte(APDS9960_GPENTH, threshold) )
1007 {
1008 return RETURN_ERR;
1009 }
1010
1011 return RETURN_OK;
1012 }
1013
1014
1015 /***********************************************************************************
1016 设置手势接近退出阀值
1017 APDS9960_GEXTH = threshold = 30
1018 0xA1 = 30
1019 此寄存器设置阀值决定手势结束,同时退出手势状态机.
1020 设置GTHR_OUT为0x00会防止手势退出直到GMODE被设为0
1021 ***********************************************************************************/
1022 int8_t set_gesture_exit_thresh(uint8_t threshold)
1023 {
1024 if( !wire_write_data_byte(APDS9960_GEXTH, threshold) ) {
1025 return RETURN_ERR;
1026 }
1027
1028 return RETURN_OK;
1029 }
1030
1031
1032
1033 /**
1034 * @brief Sets the gain of the photodiode during gesture mode
1035 gain = 2
1036 保留 7 写0
1037 GGAIN 6:5 手势增益控制，设定一个增益手势接收在手势模式下
1038 0 1x
1039 1 2x
1040 2 4x
1041 3 8x
1042 GLDRIVE 4:3 手势LED驱动强度
1043 0 100ma
1044 1 50ma
1045 2 25ma
1046 3 12.5ma
1047 GWTIME 2:0 手势等待时间
1048 0 0ms
1049 1 2.8ms
1050 2 5.6ms
1051 3 8.4ms
1052 4 14.0ms
1053 5 22.4ms
1054 6 30.8ms
1055 7 39.2ms
1056 */
1057 int8_t set_gesture_gain(uint8_t gain)
1058 {
1059 uint8_t val;
1060
1061 /* Read value from GCONF2 register */
1062 if( !wire_read_data_byte(APDS9960_GCONF2, &val) )
1063 {
1064 return RETURN_ERR;
1065 }
1066 /* Set bits in register to given value */
1067 gain &= 0x03;//取gain最低两位
1068 gain = gain << 5;//移动到6:5
1069 val &= 0x9F;//将6:5位清零
1070 val |= gain;//将gain的6:5位赋值给val
1071 /* 然后在将val写入配置寄存器2设置增益(即用gain给其设置增益)*/
1072 if( !wire_write_data_byte(APDS9960_GCONF2, val) )
1073 {
1074 return RETURN_ERR;
1075 }
1076
1077 return RETURN_OK;
1078 }
1079
1080
1081
1082 /**
1083 * @brief Sets the LED drive current during gesture mode
1084 *
1085 * Value LED Current
1086 * 0 100 mA
1087 * 1 50 mA
1088 * 2 25 mA
1089 * 3 12.5 mA
1090 *
1091 * @param[in] drive the value for the LED drive current
1092 * @return True if operation successful. False otherwise.
1093 */
1094 int8_t set_gesture_led_drive(uint8_t drive)
1095 {
1096 uint8_t val;
1097
1098 /* Read value from GCONF2 register */
1099 if( !wire_read_data_byte(APDS9960_GCONF2, &val) )
1100 {
1101 return RETURN_ERR;
1102 }
1103 /* Set bits in register to given value */
1104 drive &= 0x03;
1105 drive = drive << 3;//bit 4:3
1106 val &= 0xE7;
1107 val |= drive;
1108 /* Write register value back into GCONF2 register */
1109 if( !wire_write_data_byte(APDS9960_GCONF2, val) )
1110 {
1111 return RETURN_ERR;
1112 }
1113
1114 return RETURN_OK;
1115 }
1116
1117
1118
1119 /**
1120 * @brief Sets the time in low power mode between gesture detections
1121 *
1122 * Value Wait time
1123 * 0 0 ms
1124 * 1 2.8 ms
1125 * 2 5.6 ms
1126 * 3 8.4 ms
1127 * 4 14.0 ms
1128 * 5 22.4 ms
1129 * 6 30.8 ms
1130 * 7 39.2 ms
1131 *
1132 * @param[in] the value for the wait time
1133 * @return True if operation successful. False otherwise.
1134 */
1135 int8_t set_gesture_wait_time(uint8_t time)
1136 {
1137 uint8_t val;
1138
1139 /* Read value from GCONF2 register */
1140 if( !wire_read_data_byte(APDS9960_GCONF2, &val))
1141 {
1142 return RETURN_ERR;
1143 }
1144 mprintf("First_WaitTime__0xA3 = %.2x
",val);
1145
1146 /* Set bits in register to given value */
1147 time &= 0x07;
1148 val &= 0xF8;
1149 val |= time;
1150
1151 /* Write register value back into GCONF2 register */
1152 if( !wire_write_data_byte(APDS9960_GCONF2, val) )
1153 {
1154 return RETURN_ERR;
1155 }
1156 mprintf("Last_WaitTime__0xA3 = %.2x
",val);
1157 return RETURN_OK;
1158 }
1159
1160
1161
1162
1163 /**
1164 * @brief Turns gesture-related interrupts on or off
1165 *
1166 * @param[in] enable 1 to enable interrupts, 0 to turn them off
1167 * @return True if operation successful. False otherwise.
1168 */
1169 int8_t set_gesture_int_enable(uint8_t enable)
1170 {
1171 uint8_t val;
1172
1173 /* Read value from GCONF4 register */
1174 if( !wire_read_data_byte(APDS9960_GCONF4, &val) )
1175 {
1176 return RETURN_ERR;
1177 }
1178 mprintf("First_GIEN__0xAB = %.2x
",val);
1179 /* Set bits in register to given value */
1180 enable &= 0x01;
1181 enable = enable << 1;
1182 val &= 0xFD;
1183 val |= enable;
1184 mprintf("Last_GIEN__0xAB = %.2x
",val);
1185 /* Write register value back into GCONF4 register */
1186 if( !wire_write_data_byte(APDS9960_GCONF4, val) )
1187 {
1188 return RETURN_ERR;
1189 }
1190
1191 return RETURN_OK;
1192 }
1193
1194
1195
1196
1197 /**
1198 * @brief Tells the state machine to either enter or exit gesture state machine
1199 *
1200 * @param[in] mode 1 to enter gesture state machine, 0 to exit.
1201 * @return True if operation successful. False otherwise.
1202 */
1203 int8_t set_gesture_mode(uint8_t mode)
1204 {
1205 uint8_t val;
1206
1207 /* Read value from GCONF4 register */
1208 if( !wire_read_data_byte(APDS9960_GCONF4, &val) )
1209 {
1210 return RETURN_ERR;
1211 }
1212
1213 /* Set bits in register to given value */
1214 mode &= 0x01;
1215 val &= 0xFE;
1216 val |= mode;
1217
1218 /* Write register value back into GCONF4 register */
1219 if( !wire_write_data_byte(APDS9960_GCONF4, val) ) {
1220 return RETURN_ERR;
1221 }
1222
1223 return RETURN_OK;
1224 }
1225
1226 /**
1227 * @brief Configures I2C communications and initializes registers to defaults
1228 *
1229 * @return True if initialized successfully. False otherwise.
1230 */
1231 int8_t spark_fun_apds9960_init(void)
1232 {
1233 uint8_t id,pid;
1234
1235 /* 读取器件ID 0x92 = 0xAB */
1236 if( !wire_read_data_byte(APDS9960_ID,&pid) )
1237 {
1238 return RETURN_ERR;
1239 }
1240 id = pid;
1241 mprintf("ID:0x%x
",id);
1242 if( !((id == APDS9960_ID_1 || id == APDS9960_ID_2)) )
1243 {
1244 return RETURN_ERR;
1245 }
1246 /* 失能失能寄存器0x80 = 0x00 */
1247 if( !set_mode(ALL, OFF) ) //(7,0)
1248 {
1249 return RETURN_ERR;
1250 }
1251 //设置手势接近进入(手势状态机)阀值为0xA0 = 40
1252 /* 设置手势传感器寄存器默认值 */
1253 if( !set_gesture_enter_thresh(DEFAULT_GPENTH) )
1254 {
1255 return RETURN_ERR;
1256 }
1257 //设置手势接近退出(手势状态机)阀值为0xA1 = 30
1258 if( !set_gesture_exit_thresh(DEFAULT_GEXTH) )
1259 {
1260 return RETURN_ERR;
1261 }
1262 //设置配置寄存器1 0xA2 = 0x40
1263 //1.在4个数据集被添加到FIFO里后产生中断
1264 //2.All UDLR 探测数据被包含到集合中
1265 //3.手势退出持久性.当连续的手势结束发生称为比GEXPERS大于或等于的值时，
1266 // 手势状态机退出(第1个手势结束发生导致手势状态机退出)
1267 if( !wire_write_data_byte(APDS9960_GCONF1, DEFAULT_GCONF1) )
1268 {
1269 return RETURN_ERR;
1270 }
1271 //设置配置寄存器2 0xA3 的 bit 6:5 = 10 4x增益
1272 if( !set_gesture_gain(DEFAULT_GGAIN) )
1273 {
1274 return RETURN_ERR;
1275 }
1276 //设置配置寄存器2 0xA3 的 bit 4:3 = 00 100ma
1277 if( !set_gesture_led_drive(DEFAULT_GLDRIVE) )
1278 {
1279 return RETURN_ERR;
1280 }
1281 //设定配置寄存器2 0xA3 的 bit 2:0=001 2.8ms
1282 if( !set_gesture_wait_time(DEFAULT_GWTIME) )
1283 {
1284 return RETURN_ERR;
1285 }
1286 //设置手势UP偏移寄存器 0xA4 = 0 没有偏移
1287 if( !wire_write_data_byte(APDS9960_GOFFSET_U, DEFAULT_GOFFSET) )
1288 {
1289 return RETURN_ERR;
1290 }
1291 //设置手势DOWN偏移寄存器 0xA5 = 0 没有偏移
1292 if( !wire_write_data_byte(APDS9960_GOFFSET_D, DEFAULT_GOFFSET) )
1293 {
1294 return RETURN_ERR;
1295 }
1296 //设置手势LEFT偏移寄存器 0xA7 = 0 没有偏移
1297 if( !wire_write_data_byte(APDS9960_GOFFSET_L, DEFAULT_GOFFSET) )
1298 {
1299 return RETURN_ERR;
1300 }
1301 //设置手势RIGHT偏移寄存器 0xA9 = 0 没有偏移
1302 if( !wire_write_data_byte(APDS9960_GOFFSET_R, DEFAULT_GOFFSET) )
1303 {
1304 return RETURN_ERR;
1305 }
1306 //设置收势脉冲数和脉宽寄存器0xA6 = 0xC9 32us, 10 pulses
1307 if( !wire_write_data_byte(APDS9960_GPULSE, DEFAULT_GPULSE) )
1308 {
1309 return RETURN_ERR;
1310 }
1311 //设置配置寄存器3 0xAA 的bit 1:0 = 00 所有光电二极管在手势期间均有效
1312 if( !wire_write_data_byte(APDS9960_GCONF3, DEFAULT_GCONF3) )
1313 {
1314 return RETURN_ERR;
1315 }
1316 //设置配置寄存器4 0xAB 的bit1 = 0 关闭手势中断 GIEN=0
1317 if( !set_gesture_int_enable(DEFAULT_GIEN) )
1318 {
1319 return RETURN_ERR;
1320 }
1321 return RETURN_OK;
1322 }
1323
1324 /**
1325 * @brief Starts the gesture recognition engine on the APDS-9960
1326 * 在ap9960上启动手势识别引擎
1327 * @param[in] interrupts RETURN_OK to enable hardware external interrupt on gesture
1328 * @return True if engine enabled correctly. False on error.
1329 */
1330 int8_t enable_gesture_sensor(int8_t interrupts)
1331 {
1332 /* Enable gesture mode
1333 Set ENABLE to 0 (power off)
1334 Set WTIME to 0xFF
1335 Set AUX to LED_BOOST_300
1336 Enable PON, WEN, PEN, GEN in ENABLE
1337 */
1338 //interrupts = RETURN_OK;
1339
1340 reset_gesture_parameters();//复位手势变量=0
1341
1342 //设置等待时间寄存器0x83 = 0xFF (WLONG=1 0.03s) (WLONG=0 2.78ms)
1343 if( !wire_write_data_byte(APDS9960_WTIME, 0xFF) ) //
1344 {
1345 return RETURN_ERR;
1346 }
1347
1348 //设置接近脉冲计数寄存器 0x8E = 0x89 16us, 10 pulses
1349 if( !wire_write_data_byte(APDS9960_PPULSE, DEFAULT_GESTURE_PPULSE) )
1350 {
1351 return RETURN_ERR;
1352 }
1353
1354 //设置配置寄存器2 0x90的bit5:4=11 %300 LED驱动电流
1355 if( !set_led_boost(LED_BOOST_300) )
1356 {
1357 return RETURN_ERR;
1358 }
1359
1360 //是否开启手势中断配置寄存器4 0xAB
1361 if( interrupts )
1362 {
1363 if( !set_gesture_int_enable(1) )
1364 {
1365 return RETURN_ERR;
1366 }
1367 }
1368 else
1369 {
1370 if( !set_gesture_int_enable(0) )
1371 {
1372 return RETURN_ERR;
1373 }
1374 }
1375
1376 //设置手势模式GMODE = 1
1377 if( !set_gesture_mode(1) )
1378 {
1379 return RETURN_ERR;
1380 }
1381
1382 //PON = 1 0x80 的 bit0 = 1
1383 if( !enable_power() )
1384 {
1385 return RETURN_ERR;
1386 }
1387
1388 //WEN = 1 0x80 的 bit3 = 1
1389 if( !set_mode(WAIT, 1) )
1390 {
1391 return RETURN_ERR;
1392 }
1393
1394 //PEN=1 0x80 的 bit2 = 1
1395 if( !set_mode(PROXIMITY, 1) )
1396 {
1397 return RETURN_ERR;
1398 }
1399
1400 //PIEN=1 0x80 的 bit6 = 1
1401 if( !set_mode(GESTURE, 1) )
1402 {
1403 return RETURN_ERR;
1404 }
1405
1406 return RETURN_OK;
1407 }
1408
1409 /**
1410 * @brief APDS-9960 init
1411 *
1412 */
1413 int32_t apds9960_open(void)
1414 {
1415 Scu_SetIOReuse(UART1_TX_PAD,FIRST_FUNCTION);
1416 Scu_SetDeviceGate((unsigned int)GPIO0,ENABLE);
1417 Scu_Setdevice_Reset((unsigned int)GPIO0);
1418 Scu_Setdevice_ResetRelease((unsigned int)GPIO0);
1419 NVIC_EnableIRQ(GPIO0_IRQn);
1420 gpio_irq_trigger_config(GPIO0,gpio_pin_1,both_edges_trigger);
1421
1422 NVIC_EnableIRQ(IIC1_IRQn);
1423 Scu_SetDeviceGate((unsigned int)IIC1,ENABLE);
1424 Scu_Setdevice_Reset((unsigned int)IIC1);
1425 Scu_Setdevice_ResetRelease((unsigned int)IIC1);
1426 Scu_SetIOReuse(I2C1_SCL_PAD,FIRST_FUNCTION);
1427 Scu_SetIOReuse(I2C1_SDA_PAD,FIRST_FUNCTION);
1428
1429 I2C_InitStruct InitStruct = {0};
1430 InitStruct.I2C_IO_BASE = (unsigned int)IIC1;
1431 InitStruct.I2C_CLOCK_SPEED = 400;
1432 InitStruct.I2C_INPUT_CLK = 50000000;
1433 InitStruct.TIMEOUT = 0X5FFFFF;
1434 i2c_init(IIC1,&InitStruct);
1435 /* 模块初始化，官方示例代码引用 */
1436 sparkfun_apds9960();
1437
1438 if(!spark_fun_apds9960_init())
1439 {
1440 return RETURN_ERR;
1441 }
1442 if(!enable_gesture_sensor(RETURN_OK))
1443 {
1444 return RETURN_ERR;
1445 }
1446
1447 return RETURN_OK;
1448 }
1449
1450 /**
1451 * @brief 中断回调函数
1452 *
1453 */
1454 void apds9960_callback(void)
1455 {
1456 sensor_irq_inform(SENSOR_TYPE_GESTURE);
1457 }
1458
1459 /**
1460 * @brief 手势解析
1461 *
1462 */
1463 void gesture_manage(void)
1464 {
1465 if(is_gesture_available())
1466 {
1467 switch (read_gesture())
1468 {
1469 case DIR_UP:
1470 mprintf("Gesture-UP
");
1471 break;
1472 case DIR_DOWN:
1473 mprintf("Gesture-DOWN
");
1474 break;
1475 case DIR_LEFT:
1476 mprintf("Gesture-LEFT
");
1477 break;
1478 case DIR_RIGHT:
1479 mprintf("Gesture-RIGHT
");
1480 break;
1481 case DIR_NEAR:
1482 mprintf("Gesture-NEAR
");
1483 break;
1484 case DIR_FAR:
1485 mprintf("Gesture-FAR
");
1486 break;
1487 default:
1488 mprintf("Gesture-NONE
");
1489 }
1490 }
1491 }
1492
1493 /**
1494 * @brief apds9960 ops
1495 *
1496 */
1497 sensor_ops_t apds9960_ops =
1498 {
1499 apds9960_open,
1500 };