Files @ 00fbad00aa73
Branch filter:

Location: therm/drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_comp.c - annotation

Ethan Zonca
Remove EEPROM r/w references
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
ab7abb62e433
/**
  ******************************************************************************
  * @file    stm32f0xx_hal_comp.c
  * @author  MCD Application Team
  * @version V1.1.0
  * @date    03-Oct-2014
  * @brief   COMP HAL module driver.
  *          This file provides firmware functions to manage the following 
  *          functionalities of the COMP peripheral:
  *           + Initialization/de-initialization functions
  *           + I/O operation functions
  *           + Peripheral Control functions 
  *           + Peripheral State functions
  *         
  @verbatim
================================================================================
          ##### COMP Peripheral features #####
================================================================================
           
  [..]       
      The STM32F0xx device family integrates up to 2 analog comparators COMP1 and COMP2:
      (#) The non inverting input and inverting input can be set to GPIO pins
          as shown in table1. COMP Inputs below.
  
      (#) The COMP output is available using HAL_COMP_GetOutputLevel()
          and can be set on GPIO pins. Refer to table 2. COMP Outputs below.
  
      (#) The COMP output can be redirected to embedded timers (TIM1, TIM2 and TIM3)
          Refer to table 3. COMP Outputs redirection to embedded timers below.
  
      (#) The comparators COMP1 and COMP2 can be combined in window mode.
  
      (#) The comparators have interrupt capability with wake-up
          from Sleep and Stop modes (through the EXTI controller):
          (++) COMP1 is internally connected to EXTI Line 21
          (++) COMP2 is internally connected to EXTI Line 22
          From the corresponding IRQ handler, the right interrupt source can be retrieved with the 
          macro __HAL_COMP_EXTI_GET_FLAG(). Possible values are:
          (++) COMP_EXTI_LINE_COMP1_EVENT
          (++) COMP_EXTI_LINE_COMP2_EVENT


[..] Table 1. COMP Inputs for the STM32F05x and STM32F07x devices
 +--------------------------------------------------+    
 |                 |                | COMP1 | COMP2 |
 |-----------------|----------------|---------------|
 |                 | 1/4 VREFINT    |  OK   |  OK   |
 |                 | 1/2 VREFINT    |  OK   |  OK   |
 |                 | 3/4 VREFINT    |  OK   |  OK   |
 | Inverting Input | VREFINT        |  OK   |  OK   |
 |                 | DAC1 OUT (PA4) |  OK   |  OK   |
 |                 | DAC2 OUT (PA5) |  OK   |  OK   |
 |                 | IO1            |  PA0  |  PA2  |
 |-----------------|----------------|-------|-------|
 |  Non Inverting  |                |  PA1  |  PA3  |
 |    Input        |                |       |       |
 +--------------------------------------------------+  
  
 [..] Table 2. COMP Outputs for the STM32F05x and STM32F07x devices
 +---------------+     
 | COMP1 | COMP2 |
 |-------|-------|
 |  PA0  |  PA2  |
 |  PA6  |  PA7  |
 |  PA11 |  PA12 |
 +---------------+

 [..] Table 3. COMP Outputs redirection to embedded timers for the STM32F05x and STM32F07x devices
 +---------------------------------+     
 |     COMP1      |     COMP2      |
 |----------------|----------------|
 |  TIM1 BKIN     |  TIM1 BKIN     |
 |                |                |
 |  TIM1 OCREFCLR |  TIM1 OCREFCLR |
 |                |                |
 |  TIM1 IC1      |  TIM1 IC1      |
 |                |                |
 |  TIM2 IC4      |  TIM2 IC4      |
 |                |                |
 |  TIM2 OCREFCLR |  TIM2 OCREFCLR |
 |                |                |
 |  TIM3 IC1      |  TIM3 IC1      |
 |                |                |
 |  TIM3 OCREFCLR |  TIM3 OCREFCLR |
 +---------------------------------+

            ##### How to use this driver #####
================================================================================
  [..]
      This driver provides functions to configure and program the Comparators of STM32F05x and STM32F07x devices.

      To use the comparator, perform the following steps:
  
      (#) Fill in the HAL_COMP_MspInit() to
      (++) Configure the comparator input in analog mode using HAL_GPIO_Init()
      (++) Configure the comparator output in alternate function mode using HAL_GPIO_Init() to map the comparator 
           output to the GPIO pin
      (++) If required enable the COMP interrupt by configuring and enabling EXTI line in Interrupt mode and 
           selecting the desired sensitivity level using HAL_GPIO_Init() function. After that enable the comparator
           interrupt vector using HAL_NVIC_EnableIRQ() function.
  
      (#) Configure the comparator using HAL_COMP_Init() function:
      (++) Select the inverting input
      (++) Select the non inverting input
      (++) Select the output polarity  
      (++) Select the output redirection
      (++) Select the hysteresis level
      (++) Select the power mode
      (++) Select the event/interrupt mode
  
      (#) Enable the comparator using HAL_COMP_Start() function or HAL_COMP_Start_IT() function for interrupt mode
    
      (#) Read the comparator output level with HAL_COMP_GetOutputLevel()
    
  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************  
  */

#if defined(STM32F051x8) || defined(STM32F058xx) || \
    defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || \
    defined(STM32F091xC) || defined (STM32F098xx)

/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal.h"

/** @addtogroup STM32F0xx_HAL_Driver
  * @{
  */

/** @defgroup COMP COMP HAL Module Driver 
  * @brief COMP HAL module driver
  * @{
  */

#ifdef HAL_COMP_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup COMP_Private_Constants COMP Private Constants
  * @{
  */
/* CSR register reset value */ 
#define COMP_CSR_RESET_VALUE            ((uint32_t)0x00000000)
/* CSR register masks */ 
#define COMP_CSR_RESET_PARAMETERS_MASK   ((uint32_t)0x00003FFF)
#define COMP_CSR_UPDATE_PARAMETERS_MASK  ((uint32_t)0x00003FFE)
/* CSR COMPx non inverting input mask */ 
#define COMP_CSR_COMPxNONINSEL_MASK      ((uint16_t)COMP_CSR_COMP1SW1)
/* CSR COMP2 shift */ 
#define COMP_CSR_COMP1_SHIFT             0U
#define COMP_CSR_COMP2_SHIFT             16U
/**
  * @}
  */
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/** @defgroup COMP_Exported_Functions COMP Exported Functions
  * @{
  */

/** @defgroup COMP_Exported_Functions_Group1 Initialization/de-initialization functions 
 *  @brief    Initialization and Configuration functions 
 *
@verbatim    
 ===============================================================================
              ##### Initialization and Configuration functions #####
 ===============================================================================
    [..]  This section provides functions to initialize and de-initialize comparators 

@endverbatim
  * @{
  */

/**
  * @brief  Initializes the COMP according to the specified
  *         parameters in the COMP_InitTypeDef and create the associated handle.
  * @note   If the selected comparator is locked, initialization can't be performed.
  *         To unlock the configuration, perform a system reset.
  * @param  hcomp: COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_Init(COMP_HandleTypeDef *hcomp)
{ 
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t regshift = COMP_CSR_COMP1_SHIFT;
  
  /* Check the COMP handle allocation and lock status */
  if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Check the parameter */
    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
    assert_param(IS_COMP_INVERTINGINPUT(hcomp->Init.InvertingInput));
    assert_param(IS_COMP_NONINVERTINGINPUT(hcomp->Init.NonInvertingInput));
    assert_param(IS_COMP_OUTPUT(hcomp->Init.Output));
    assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol));
    assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis));
    assert_param(IS_COMP_MODE(hcomp->Init.Mode));
    
    if(hcomp->Init.NonInvertingInput == COMP_NONINVERTINGINPUT_DAC1SWITCHCLOSED)
    {
      assert_param(IS_COMP_DAC1SWITCH_INSTANCE(hcomp->Instance));
    }
  
    if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLED)
    {
      assert_param(IS_COMP_WINDOWMODE_INSTANCE(hcomp->Instance));
    }
  
    if(hcomp->State == HAL_COMP_STATE_RESET)
    {
      /* Init SYSCFG and the low level hardware to access comparators */
      __SYSCFG_CLK_ENABLE();

      HAL_COMP_MspInit(hcomp);
    }
  
    /* Set COMP parameters */
    /*     Set COMPxINSEL bits according to hcomp->Init.InvertingInput value        */
    /*     Set COMPxOUTSEL bits according to hcomp->Init.Output value               */
    /*     Set COMPxPOL bit according to hcomp->Init.OutputPol value                */
    /*     Set COMPxHYST bits according to hcomp->Init.Hysteresis value             */
    /*     Set COMPxMODE bits according to hcomp->Init.Mode value                   */
    if(hcomp->Instance == COMP2)
    {
      regshift = COMP_CSR_COMP2_SHIFT;
    }
    MODIFY_REG(COMP->CSR, 
               (uint32_t)(COMP_CSR_COMPxINSEL  | COMP_CSR_COMPxNONINSEL_MASK | \
                COMP_CSR_COMPxOUTSEL | COMP_CSR_COMPxPOL           | \
                COMP_CSR_COMPxHYST   | COMP_CSR_COMPxMODE) << regshift,
               (hcomp->Init.InvertingInput    | \
                hcomp->Init.NonInvertingInput | \
                hcomp->Init.Output            | \
                hcomp->Init.OutputPol         | \
                hcomp->Init.Hysteresis        | \
                hcomp->Init.Mode) << regshift);   
    
    if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLED)
    {
      COMP->CSR |= COMP_CSR_WNDWEN;
    }

    /* Initialize the COMP state*/
    if(hcomp->State == HAL_COMP_STATE_RESET)
    {
      hcomp->State = HAL_COMP_STATE_READY;
    }
  }
  
  return status;
}

/**
  * @brief  DeInitializes the COMP peripheral 
  * @note   Deinitialization can't be performed if the COMP configuration is locked.
  *         To unlock the configuration, perform a system reset.
  * @param  hcomp: COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_DeInit(COMP_HandleTypeDef *hcomp)
{
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t regshift = COMP_CSR_COMP1_SHIFT;

  /* Check the COMP handle allocation and lock status */
  if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Check the parameter */
    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));

    /* Set COMP_CSR register to reset value for the corresponding COMP instance */
    if(hcomp->Instance == COMP2)
    {
      regshift = COMP_CSR_COMP2_SHIFT;
    }
    MODIFY_REG(COMP->CSR, 
               COMP_CSR_RESET_PARAMETERS_MASK << regshift, 
               COMP_CSR_RESET_VALUE << regshift);
    
    /* DeInit the low level hardware: SYSCFG, GPIO, CLOCK and NVIC */
    HAL_COMP_MspDeInit(hcomp);

    hcomp->State = HAL_COMP_STATE_RESET;
  }
  
  return status;
}

/**
  * @brief  Initializes the COMP MSP.
  * @param  hcomp: COMP handle
  * @retval None
  */
__weak void HAL_COMP_MspInit(COMP_HandleTypeDef *hcomp)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_COMP_MspInit could be implenetd in the user file
   */
}

/**
  * @brief  DeInitializes COMP MSP.
  * @param  hcomp: COMP handle
  * @retval None
  */
__weak void HAL_COMP_MspDeInit(COMP_HandleTypeDef *hcomp)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_COMP_MspDeInit could be implenetd in the user file
   */
}

/**
  * @}
  */

/** @defgroup COMP_Exported_Functions_Group2 I/O operation functions 
 *  @brief   Data transfers functions 
 *
@verbatim   
 ===============================================================================
                      ##### IO operation functions #####
 ===============================================================================  
    [..]
    This subsection provides a set of functions allowing to manage the COMP data 
    transfers.

@endverbatim
  * @{
  */

/**
  * @brief  Start the comparator 
  * @param  hcomp: COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_Start(COMP_HandleTypeDef *hcomp)
{ 
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t regshift = COMP_CSR_COMP1_SHIFT;
  
  /* Check the COMP handle allocation and lock status */
  if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Check the parameter */
    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));

    if(hcomp->State == HAL_COMP_STATE_READY)
    {
      /* Enable the selected comparator */
      if(hcomp->Instance == COMP2)
      {
        regshift = COMP_CSR_COMP2_SHIFT;
      }
      SET_BIT(COMP->CSR, (uint32_t)COMP_CSR_COMPxEN << regshift);

      hcomp->State = HAL_COMP_STATE_BUSY;      
    }
    else
    {
      status = HAL_ERROR;
    }
  }

  return status;
}

/**
  * @brief  Stop the comparator 
  * @param  hcomp: COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_Stop(COMP_HandleTypeDef *hcomp)
{ 
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t regshift = COMP_CSR_COMP1_SHIFT;
  
  /* Check the COMP handle allocation and lock status */
  if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Check the parameter */
    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));

    if(hcomp->State == HAL_COMP_STATE_BUSY)
    {
      /* Disable the selected comparator */
      if(hcomp->Instance == COMP2)
      {
        regshift = COMP_CSR_COMP2_SHIFT;
      }
      CLEAR_BIT(COMP->CSR, (uint32_t)COMP_CSR_COMPxEN << regshift);

      hcomp->State = HAL_COMP_STATE_READY;
    }
    else
    {
      status = HAL_ERROR;
    }
  }
  
  return status;
}

/**
  * @brief  Enables the interrupt and starts the comparator
  * @param  hcomp: COMP handle
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_COMP_Start_IT(COMP_HandleTypeDef *hcomp)
{ 
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t extiline = 0;
  
  /* Check the parameter */
  assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));

  status = HAL_COMP_Start(hcomp);
  if(status == HAL_OK)
  {
    /* Check the Exti Line output configuration */
    extiline = __HAL_COMP_GET_EXTI_LINE(hcomp->Instance);
    /* Configure the rising edge */
    if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_RISING) != RESET)
    {
      __HAL_COMP_EXTI_RISING_IT_ENABLE(extiline);
    }
    else
    {
      __HAL_COMP_EXTI_RISING_IT_DISABLE(extiline);
    }
    /* Configure the falling edge */
    if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_FALLING) != RESET)
    {
      __HAL_COMP_EXTI_FALLING_IT_ENABLE(extiline);
    }
    else
    {
      __HAL_COMP_EXTI_FALLING_IT_DISABLE(extiline);
    }
    /* Enable Exti interrupt mode */
    __HAL_COMP_EXTI_ENABLE_IT(extiline);
    /* Clear COMP Exti pending bit */
    __HAL_COMP_EXTI_CLEAR_FLAG(extiline);    
  }

  return status;
}

/**
  * @brief  Disable the interrupt and Stop the comparator 
  * @param  hcomp: COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_Stop_IT(COMP_HandleTypeDef *hcomp)
{ 
  HAL_StatusTypeDef status = HAL_OK;
  
  /* Disable the Exti Line interrupt mode */
  __HAL_COMP_EXTI_DISABLE_IT(__HAL_COMP_GET_EXTI_LINE(hcomp->Instance));
  
  status = HAL_COMP_Stop(hcomp);
  
  return status;
}

/**
  * @brief  Comparator IRQ Handler 
  * @param  hcomp: COMP handle
  * @retval HAL status
  */
void HAL_COMP_IRQHandler(COMP_HandleTypeDef *hcomp)
{
  uint32_t extiline = __HAL_COMP_GET_EXTI_LINE(hcomp->Instance);
  
  /* Check COMP Exti flag */
  if(__HAL_COMP_EXTI_GET_FLAG(extiline) != RESET)
  {
    /* Clear COMP Exti pending bit */
    __HAL_COMP_EXTI_CLEAR_FLAG(extiline);

    /* COMP trigger user callback */
    HAL_COMP_TriggerCallback(hcomp);    
  }  
}

/**
  * @}
  */

/** @defgroup COMP_Exported_Functions_Group3 Peripheral Control functions 
 *  @brief   management functions 
 *
@verbatim   
 ===============================================================================
                      ##### Peripheral Control functions #####
 ===============================================================================  
    [..]
    This subsection provides a set of functions allowing to control the COMP data 
    transfers.

@endverbatim
  * @{
  */

/**
  * @brief  Lock the selected comparator configuration. 
  * @param  hcomp: COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_Lock(COMP_HandleTypeDef *hcomp)
{
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t regshift = COMP_CSR_COMP1_SHIFT;

  /* Check the COMP handle allocation and lock status */
  if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Check the parameter */
    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));

    /* Set lock flag */
    hcomp->State |= COMP_STATE_BIT_LOCK;

    /* Set the lock bit corresponding to selected comparator */
    if(hcomp->Instance == COMP2)
    {
      regshift = COMP_CSR_COMP2_SHIFT;
    }
    SET_BIT(COMP->CSR, (uint32_t)COMP_CSR_COMPxLOCK << regshift);
  }
  
  return status; 
}

/**
  * @brief  Return the output level (high or low) of the selected comparator. 
  *         The output level depends on the selected polarity.
  *         If the polarity is not inverted:
  *           - Comparator output is low when the non-inverting input is at a lower
  *             voltage than the inverting input
  *           - Comparator output is high when the non-inverting input is at a higher
  *             voltage than the inverting input
  *         If the polarity is inverted:
  *           - Comparator output is high when the non-inverting input is at a lower
  *             voltage than the inverting input
  *           - Comparator output is low when the non-inverting input is at a higher
  *             voltage than the inverting input
  * @param  hcomp: COMP handle
  * @retval Returns the selected comparator output level: COMP_OUTPUTLEVEL_LOW or COMP_OUTPUTLEVEL_HIGH.
  *       
  */
uint32_t HAL_COMP_GetOutputLevel(COMP_HandleTypeDef *hcomp)
{
  uint32_t level=0;
  uint32_t regshift = COMP_CSR_COMP1_SHIFT;
  
  /* Check the parameter */
  assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
  
  if(hcomp->Instance == COMP2)
  {
    regshift = COMP_CSR_COMP2_SHIFT;
  }
  level = READ_BIT(COMP->CSR, (uint32_t)COMP_CSR_COMPxOUT << regshift);
  
  if(level != 0)
  {
    return(COMP_OUTPUTLEVEL_HIGH);
  }
  return(COMP_OUTPUTLEVEL_LOW);
}

/**
  * @brief  Comparator callback.
  * @param  hcomp: COMP handle
  * @retval None
  */
__weak void HAL_COMP_TriggerCallback(COMP_HandleTypeDef *hcomp)
{
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_COMP_TriggerCallback should be implemented in the user file
   */
}


/**
  * @}
  */

/** @defgroup COMP_Exported_Functions_Group4 Peripheral State functions 
 *  @brief   Peripheral State functions 
 *
@verbatim   
 ===============================================================================
                      ##### Peripheral State functions #####
 ===============================================================================  
    [..]
    This subsection permit to get in run-time the status of the peripheral 
    and the data flow.

@endverbatim
  * @{
  */

/**
  * @brief  Return the COMP state
  * @param  hcomp : COMP handle
  * @retval HAL state
  */
HAL_COMP_StateTypeDef HAL_COMP_GetState(COMP_HandleTypeDef *hcomp)
{
  /* Check the COMP handle allocation */
  if(hcomp == NULL)
  {
    return HAL_COMP_STATE_RESET;
  }

  /* Check the parameter */
  assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));

  return hcomp->State;
}
/**
  * @}
  */

/**
  * @}
  */

#endif /* HAL_COMP_MODULE_ENABLED */
/**
  * @}
  */

/**
  * @}
  */

#endif /* STM32F051x8 || STM32F058xx || */
       /* STM32F071xB || STM32F072xB || STM32F078xx || */
       /* STM32F091xC || defined (STM32F098xx) */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/