-
Notifications
You must be signed in to change notification settings - Fork 1k
/
Copy pathtimer.c
1386 lines (1283 loc) · 29.9 KB
/
timer.c
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
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/**
******************************************************************************
* @file timer.c
* @author WI6LABS
* @version V1.0.0
* @date 01-August-2016
* @brief provide timer services
*
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2016 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.
*
******************************************************************************
*/
/** @addtogroup CMSIS
* @{
*/
/** @addtogroup stm32f4xx_system
* @{
*/
/** @addtogroup STM32F4xx_System_Private_Includes
* @{
*/
#include "debug.h"
#include "timer.h"
#include "board.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @}
*/
/** @addtogroup STM32F4xx_System_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F4xx_System_Private_Defines
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F4xx_System_Private_FunctionPrototypes
* @{
*/
static void HAL_TIMx_PeriodElapsedCallback(stimer_t *obj);
/**
* @}
*/
/** @addtogroup STM32F4xx_System_Private_Macros
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F4xx_System_Private_Variables
* @{
*/
#define TIMER_NUM (22)
static TIM_HandleTypeDef* timer_handles[TIMER_NUM] = {NULL};
/**
* @}
*/
/**
* @brief Enable the timer clock
* @param htim : one of the defined timer
* @retval None
*/
void timer_enable_clock(TIM_HandleTypeDef *htim)
{
// Enable TIM clock
#if defined(TIM1_BASE)
if (htim->Instance == TIM1){
__HAL_RCC_TIM1_CLK_ENABLE();
timer_handles[0] = htim;
}
#endif
#if defined(TIM2_BASE)
if (htim->Instance == TIM2) {
__HAL_RCC_TIM2_CLK_ENABLE();
timer_handles[1] = htim;
}
#endif
#if defined(TIM3_BASE)
if (htim->Instance == TIM3) {
__HAL_RCC_TIM3_CLK_ENABLE();
timer_handles[2] = htim;
}
#endif
#if defined(TIM4_BASE)
if (htim->Instance == TIM4) {
__HAL_RCC_TIM4_CLK_ENABLE();
timer_handles[3] = htim;
}
#endif
#if defined(TIM5_BASE)
if (htim->Instance == TIM5) {
__HAL_RCC_TIM5_CLK_ENABLE();
timer_handles[4] = htim;
}
#endif
#if defined(TIM6_BASE)
if (htim->Instance == TIM6) {
__HAL_RCC_TIM6_CLK_ENABLE();
timer_handles[5] = htim;
}
#endif
#if defined(TIM7_BASE)
if (htim->Instance == TIM7) {
__HAL_RCC_TIM7_CLK_ENABLE();
timer_handles[6] = htim;
}
#endif
#if defined(TIM8_BASE)
if (htim->Instance == TIM8) {
__HAL_RCC_TIM8_CLK_ENABLE();
timer_handles[7] = htim;
}
#endif
#if defined(TIM9_BASE)
if (htim->Instance == TIM9) {
__HAL_RCC_TIM9_CLK_ENABLE();
timer_handles[8] = htim;
}
#endif
#if defined(TIM10_BASE)
if (htim->Instance == TIM10) {
__HAL_RCC_TIM10_CLK_ENABLE();
timer_handles[9] = htim;
}
#endif
#if defined(TIM11_BASE)
if (htim->Instance == TIM11) {
__HAL_RCC_TIM11_CLK_ENABLE();
timer_handles[10] = htim;
}
#endif
#if defined(TIM12_BASE)
if (htim->Instance == TIM12) {
__HAL_RCC_TIM12_CLK_ENABLE();
timer_handles[11] = htim;
}
#endif
#if defined(TIM13_BASE)
if (htim->Instance == TIM13) {
__HAL_RCC_TIM13_CLK_ENABLE();
timer_handles[12] = htim;
}
#endif
#if defined(TIM14_BASE)
if (htim->Instance == TIM14) {
__HAL_RCC_TIM14_CLK_ENABLE();
timer_handles[13] = htim;
}
#endif
#if defined(TIM15_BASE)
if (htim->Instance == TIM15) {
__HAL_RCC_TIM15_CLK_ENABLE();
timer_handles[14] = htim;
}
#endif
#if defined(TIM16_BASE)
if (htim->Instance == TIM16) {
__HAL_RCC_TIM16_CLK_ENABLE();
timer_handles[15] = htim;
}
#endif
#if defined(TIM17_BASE)
if (htim->Instance == TIM17) {
__HAL_RCC_TIM17_CLK_ENABLE();
timer_handles[16] = htim;
}
#endif
#if defined(TIM18_BASE)
if (htim->Instance == TIM18) {
__HAL_RCC_TIM18_CLK_ENABLE();
timer_handles[17] = htim;
}
#endif
#if defined(TIM19_BASE)
if (htim->Instance == TIM19) {
__HAL_RCC_TIM19_CLK_ENABLE();
timer_handles[18] = htim;
}
#endif
#if defined(TIM20_BASE)
if (htim->Instance == TIM20) {
__HAL_RCC_TIM20_CLK_ENABLE();
timer_handles[19] = htim;
}
#endif
#if defined(TIM21_BASE)
if (htim->Instance == TIM21) {
__HAL_RCC_TIM21_CLK_ENABLE();
timer_handles[20] = htim;
}
#endif
#if defined(TIM22_BASE)
if (htim->Instance == TIM22) {
__HAL_RCC_TIM22_CLK_ENABLE();
timer_handles[21] = htim;
}
#endif
}
/**
* @brief Disable the timer clock
* @param htim : one of the defined timer
* @retval None
*/
void timer_disable_clock(TIM_HandleTypeDef *htim)
{
// Enable TIM clock
#if defined(TIM1_BASE)
if (htim->Instance == TIM1){
__HAL_RCC_TIM1_CLK_DISABLE();
}
#endif
#if defined(TIM2_BASE)
if (htim->Instance == TIM2) {
__HAL_RCC_TIM2_CLK_DISABLE();
}
#endif
#if defined(TIM3_BASE)
if (htim->Instance == TIM3) {
__HAL_RCC_TIM3_CLK_DISABLE();
}
#endif
#if defined(TIM4_BASE)
if (htim->Instance == TIM4) {
__HAL_RCC_TIM4_CLK_DISABLE();
}
#endif
#if defined(TIM5_BASE)
if (htim->Instance == TIM5) {
__HAL_RCC_TIM5_CLK_DISABLE();
}
#endif
#if defined(TIM6_BASE)
if (htim->Instance == TIM6) {
__HAL_RCC_TIM6_CLK_DISABLE();
}
#endif
#if defined(TIM7_BASE)
if (htim->Instance == TIM7) {
__HAL_RCC_TIM7_CLK_DISABLE();
}
#endif
#if defined(TIM8_BASE)
if (htim->Instance == TIM8) {
__HAL_RCC_TIM8_CLK_DISABLE();
}
#endif
#if defined(TIM9_BASE)
if (htim->Instance == TIM9) {
__HAL_RCC_TIM9_CLK_DISABLE();
}
#endif
#if defined(TIM10_BASE)
if (htim->Instance == TIM10) {
__HAL_RCC_TIM10_CLK_DISABLE();
}
#endif
#if defined(TIM11_BASE)
if (htim->Instance == TIM11) {
__HAL_RCC_TIM11_CLK_DISABLE();
}
#endif
#if defined(TIM12_BASE)
if (htim->Instance == TIM12) {
__HAL_RCC_TIM12_CLK_DISABLE();
}
#endif
#if defined(TIM13_BASE)
if (htim->Instance == TIM13) {
__HAL_RCC_TIM13_CLK_DISABLE();
}
#endif
#if defined(TIM14_BASE)
if (htim->Instance == TIM14) {
__HAL_RCC_TIM14_CLK_DISABLE();
}
#endif
#if defined(TIM15_BASE)
if (htim->Instance == TIM15) {
__HAL_RCC_TIM15_CLK_DISABLE();
}
#endif
#if defined(TIM16_BASE)
if (htim->Instance == TIM16) {
__HAL_RCC_TIM16_CLK_DISABLE();
}
#endif
#if defined(TIM17_BASE)
if (htim->Instance == TIM17) {
__HAL_RCC_TIM17_CLK_DISABLE();
}
#endif
#if defined(TIM18_BASE)
if (htim->Instance == TIM18) {
__HAL_RCC_TIM18_CLK_DISABLE();
}
#endif
#if defined(TIM19_BASE)
if (htim->Instance == TIM19) {
__HAL_RCC_TIM19_CLK_DISABLE();
}
#endif
#if defined(TIM20_BASE)
if (htim->Instance == TIM20) {
__HAL_RCC_TIM20_CLK_DISABLE();
}
#endif
#if defined(TIM21_BASE)
if (htim->Instance == TIM21) {
__HAL_RCC_TIM21_CLK_DISABLE();
}
#endif
#if defined(TIM22_BASE)
if (htim->Instance == TIM22) {
__HAL_RCC_TIM22_CLK_DISABLE();
}
#endif
}
/**
* @brief TIMER Initialization - clock init and nvic init
* @param htim_base : one of the defined timer
* @retval None
*/
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef *htim_base)
{
timer_enable_clock(htim_base);
HAL_NVIC_SetPriority(getTimerIrq(htim_base->Instance), 15 ,0);
HAL_NVIC_EnableIRQ(getTimerIrq(htim_base->Instance));
}
/**
* @brief TIMER Deinitialization - clock and nvic
* @param htim_base : one of the defined timer
* @retval None
*/
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef *htim_base)
{
timer_disable_clock(htim_base);
HAL_NVIC_DisableIRQ(getTimerIrq(htim_base->Instance));
}
/**
* @brief This function will set the timer to the required value
* @param timer_id : timer_id_e
* @param period : Timer period in milliseconds
* @param prescaler : clock divider
* @retval None
*/
void TimerHandleInit(stimer_t *obj, uint16_t period, uint16_t prescaler)
{
if(obj == NULL)
return;
TIM_HandleTypeDef *handle = &(obj->handle);
handle->Instance = obj->timer;
handle->Init.Prescaler = prescaler;
handle->Init.CounterMode = TIM_COUNTERMODE_UP;
handle->Init.Period = period;
handle->Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
#if !defined(STM32L0xx) && !defined(STM32L1xx)
handle->Init.RepetitionCounter = 0x0000;
#endif
if(HAL_TIM_Base_Init(handle) != HAL_OK){
return;
}
if(HAL_TIM_Base_Start_IT(handle) != HAL_OK){
return;
}
}
/**
* @brief This function return the timer clock source.
* @param tim: timer instance
* @retval 1 = PCLK1 or 2 = PCLK2 or 0 = unknown
*/
uint32_t getTimerIrq(TIM_TypeDef* tim)
{
uint32_t IRQn = 0;
if(tim != (TIM_TypeDef *)NC) {
/* Get IRQn depending on TIM instance */
switch ((uint32_t)tim) {
#if defined(TIM1_BASE)
case (uint32_t)TIM1:
IRQn = TIM1_IRQn;
break;
#endif
#if defined(TIM2_BASE)
case (uint32_t)TIM2:
IRQn = TIM2_IRQn;
break;
#endif
#if defined(TIM3_BASE)
case (uint32_t)TIM3:
IRQn = TIM3_IRQn;
break;
#endif
#if defined(TIM4_BASE)
case (uint32_t)TIM4:
IRQn = TIM4_IRQn;
break;
#endif
#if defined(TIM5_BASE)
case (uint32_t)TIM5:
IRQn = TIM5_IRQn;
break;
#endif
#if defined(TIM6_BASE)
case (uint32_t)TIM6:
IRQn = TIM6_IRQn;
break;
#endif
#if defined(TIM7_BASE)
case (uint32_t)TIM7:
IRQn = TIM7_IRQn;
break;
#endif
#if defined(TIM8_BASE)
case (uint32_t)TIM8:
IRQn = TIM8_IRQn;
break;
#endif
#if defined(TIM9_BASE)
case (uint32_t)TIM9:
IRQn = TIM9_IRQn;
break;
#endif
#if defined(TIM10_BASE)
case (uint32_t)TIM10:
IRQn = TIM10_IRQn;
break;
#endif
#if defined(TIM11_BASE)
case (uint32_t)TIM11:
IRQn = TIM11_IRQn;
break;
#endif
#if defined(TIM12_BASE)
case (uint32_t)TIM12:
IRQn = TIM12_IRQn;
break;
#endif
#if defined(TIM13_BASE)
case (uint32_t)TIM13:
IRQn = TIM13_IRQn;
break;
#endif
#if defined(TIM14_BASE)
case (uint32_t)TIM14:
IRQn = TIM14_IRQn;
break;
#endif
#if defined(TIM15_BASE)
case (uint32_t)TIM15:
IRQn = TIM15_IRQn;
break;
#endif
#if defined(TIM16_BASE)
case (uint32_t)TIM16:
IRQn = TIM16_IRQn;
break;
#endif
#if defined(TIM17_BASE)
case (uint32_t)TIM17:
IRQn = TIM17_IRQn;
break;
#endif
#if defined(TIM18_BASE)
case (uint32_t)TIM18:
IRQn = TIM18_IRQn;
break;
#endif
#if defined(TIM19_BASE)
case (uint32_t)TIM19:
IRQn = TIM19_IRQn;
break;
#endif
#if defined(TIM20_BASE)
case (uint32_t)TIM20:
IRQn = TIM20_IRQn;
break;
#endif
#if defined(TIM21_BASE)
case (uint32_t)TIM21:
IRQn = TIM21_IRQn;
break;
#endif
#if defined(TIM22_BASE)
case (uint32_t)TIM22:
IRQn = TIM22_IRQn;
break;
#endif
break;
default:
debug("TIM: Unknown timer IRQn");
break;
}
}
return IRQn;
}
/**
* @brief This function will reset the timer
* @param timer_id : timer_id_e
* @retval None
*/
void TimerHandleDeinit(stimer_t *obj)
{
if(obj != NULL) {
HAL_TIM_Base_Stop_IT(&(obj->handle));
HAL_TIM_Base_DeInit(&(obj->handle));
}
}
/**
* @brief This function return the timer clock source.
* @param tim: timer instance
* @retval 1 = PCLK1 or 2 = PCLK2 or 0 = unknown
*/
uint8_t getTimerClkSrc(TIM_TypeDef* tim)
{
uint8_t clkSrc = 0;
if(tim != (TIM_TypeDef *)NC)
#ifdef STM32F0xx
/* TIMx source CLK is PCKL1 */
clkSrc = 1;
#else
{
/* Get source clock depending on TIM instance */
switch ((uint32_t)tim) {
#if defined(TIM2_BASE)
case (uint32_t)TIM2:
#endif
#if defined(TIM3_BASE)
case (uint32_t)TIM3:
#endif
#if defined(TIM4_BASE)
case (uint32_t)TIM4:
#endif
#if defined(TIM5_BASE)
case (uint32_t)TIM5:
#endif
#if defined(TIM6_BASE)
case (uint32_t)TIM6:
#endif
#if defined(TIM7_BASE)
case (uint32_t)TIM7:
#endif
#if defined(TIM12_BASE)
case (uint32_t)TIM12:
#endif
#if defined(TIM13_BASE)
case (uint32_t)TIM13:
#endif
#if defined(TIM14_BASE)
case (uint32_t)TIM14:
#endif
#if defined(TIM18_BASE)
case (uint32_t)TIM18:
#endif
clkSrc = 1;
break;
#if defined(TIM1_BASE)
case (uint32_t)TIM1:
#endif
#if defined(TIM8_BASE)
case (uint32_t)TIM8:
#endif
#if defined(TIM9_BASE)
case (uint32_t)TIM9:
#endif
#if defined(TIM10_BASE)
case (uint32_t)TIM10:
#endif
#if defined(TIM11_BASE)
case (uint32_t)TIM11:
#endif
#if defined(TIM15_BASE)
case (uint32_t)TIM15:
#endif
#if defined(TIM16_BASE)
case (uint32_t)TIM16:
#endif
#if defined(TIM17_BASE)
case (uint32_t)TIM17:
#endif
#if defined(TIM19_BASE)
case (uint32_t)TIM19:
#endif
#if defined(TIM20_BASE)
case (uint32_t)TIM20:
#endif
#if defined(TIM21_BASE)
case (uint32_t)TIM21:
#endif
#if defined(TIM22_BASE)
case (uint32_t)TIM22:
#endif
clkSrc = 2;
break;
default:
debug("TIM: Unknown timer instance");
break;
}
}
#endif
return clkSrc;
}
/**
* @brief This function return the timer clock frequency.
* @param tim: timer instance
* @retval frequency in Hz
*/
uint32_t getTimerClkFreq(TIM_TypeDef* tim)
{
RCC_ClkInitTypeDef clkconfig = {};
uint32_t pFLatency = 0U;
uint32_t uwTimclock = 0U, uwAPBxPrescaler = 0U;
/* Get clock configuration */
HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
switch(getTimerClkSrc(tim)) {
case 1:
uwAPBxPrescaler = clkconfig.APB1CLKDivider;
uwTimclock = HAL_RCC_GetPCLK1Freq();
break;
#ifndef STM32F0xx
case 2:
uwAPBxPrescaler = clkconfig.APB2CLKDivider;
uwTimclock = HAL_RCC_GetPCLK2Freq();
break;
#endif
default:
case 0:
debug("TIM: Unknown clock source");
break;
}
/* When TIMPRE bit of the RCC_DCKCFGR register is reset,
* if APBx prescaler is 1, then TIMxCLK = PCLKx,
* otherwise TIMxCLK = 2x PCLKx.
* When TIMPRE bit in the RCC_DCKCFGR register is set,
* if APBx prescaler is 1,2 or 4, then TIMxCLK =HCLK,
* otherwise TIMxCLK = 4x PCLKx
*/
#if defined(STM32F4xx) || defined(STM32F7xx)
#if !defined(STM32F405xx) && !defined(STM32F415xx) &&\
!defined(STM32F407xx) && !defined(STM32F417xx)
RCC_PeriphCLKInitTypeDef PeriphClkConfig = {};
HAL_RCCEx_GetPeriphCLKConfig(&PeriphClkConfig);
if (PeriphClkConfig.TIMPresSelection == RCC_TIMPRES_ACTIVATED)
switch (uwAPBxPrescaler) {
default:
case RCC_HCLK_DIV1:
case RCC_HCLK_DIV2:
case RCC_HCLK_DIV4:
uwTimclock=HAL_RCC_GetHCLKFreq();
break;
case RCC_HCLK_DIV8:
case RCC_HCLK_DIV16:
uwTimclock*=4;
break;
}
else
#endif
#endif
switch (uwAPBxPrescaler) {
default:
case RCC_HCLK_DIV1:
// uwTimclock*=1;
break;
case RCC_HCLK_DIV2:
case RCC_HCLK_DIV4:
case RCC_HCLK_DIV8:
case RCC_HCLK_DIV16:
uwTimclock*=2;
break;
}
return uwTimclock;
}
/**
* @brief This function will set the timer to generate pulse in interrupt mode with a particular duty cycle
* @param timer_id : timer_id_e
* @param period : timer period in microseconds
* @param pulseWidth : pulse width in microseconds
* @param irqHandle : interrupt routine to call
* @retval None
*/
void TimerPulseInit(stimer_t *obj, uint16_t period, uint16_t pulseWidth, void (*irqHandle)(stimer_t*, uint32_t))
{
TIM_OC_InitTypeDef sConfig = {};
TIM_HandleTypeDef *handle = &(obj->handle);
obj->timer = TIMER_SERVO;
//min pulse = 1us - max pulse = 65535us
handle->Instance = obj->timer;
handle->Init.Period = period;
handle->Init.Prescaler = (uint32_t)(getTimerClkFreq(obj->timer) / (1000000)) - 1;
handle->Init.ClockDivision = 0;
handle->Init.CounterMode = TIM_COUNTERMODE_UP;
#if !defined(STM32L0xx) && !defined(STM32L1xx)
handle->Init.RepetitionCounter = 0;
#endif
obj->irqHandleOC = irqHandle;
sConfig.OCMode = TIM_OCMODE_TIMING;
sConfig.Pulse = pulseWidth;
sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfig.OCFastMode = TIM_OCFAST_DISABLE;
#if !defined(STM32L0xx) && !defined(STM32L1xx)
sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH;
sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
#endif
HAL_NVIC_SetPriority(getTimerIrq(obj->timer), 14, 0);
HAL_NVIC_EnableIRQ(getTimerIrq(obj->timer));
if(HAL_TIM_OC_Init(handle) != HAL_OK) return;
if(HAL_TIM_OC_ConfigChannel(handle, &sConfig, TIM_CHANNEL_1) != HAL_OK) return;
if(HAL_TIM_OC_Start_IT(handle, TIM_CHANNEL_1) != HAL_OK) return;
}
/**
* @brief This function will reset the pulse generation
* @param timer_id : timer_id_e
* @retval None
*/
void TimerPulseDeinit(stimer_t *obj)
{
TIM_HandleTypeDef *handle = &(obj->handle);
obj->irqHandleOC = NULL;
HAL_NVIC_DisableIRQ(getTimerIrq(obj->timer));
if(HAL_TIM_OC_DeInit(handle) != HAL_OK) return;
if(HAL_TIM_OC_Stop_IT(handle, TIM_CHANNEL_1) != HAL_OK) return;
}
/**
* @brief Initializes the TIM Output Compare MSP.
* @param htim: TIM handle
* @retval None
*/
void HAL_TIM_OC_MspInit(TIM_HandleTypeDef *htim)
{
timer_enable_clock(htim);
}
/**
* @brief DeInitialize TIM Output Compare MSP.
* @param htim: TIM handle
* @retval None
*/
void HAL_TIM_OC_MspDeInit(TIM_HandleTypeDef *htim)
{
timer_disable_clock(htim);
}
/* Aim of the function is to get timer_s pointer using htim pointer */
/* Highly inspired from magical linux kernel's "container_of" */
/* (which was not directly used since not compatible with IAR toolchain) */
stimer_t *get_timer_obj(TIM_HandleTypeDef *htim){
struct timer_s *obj_s;
stimer_t *obj;
obj_s = (struct timer_s *)( (char *)htim - offsetof(struct timer_s,handle));
obj = (stimer_t *)( (char *)obj_s - offsetof(stimer_t,timer));
return (obj);
}
/**
* @brief Output Compare callback in non-blocking mode
* @param htim : TIM OC handle
* @retval None
*/
void HAL_TIM_OC_DelayElapsedCallback(TIM_HandleTypeDef *htim)
{
uint32_t channel = 0;
stimer_t *obj = get_timer_obj(htim);
if(obj->irqHandleOC != NULL) {
switch(htim->Channel) {
case HAL_TIM_ACTIVE_CHANNEL_1:
channel = TIM_CHANNEL_1 / 4;
break;
default:
return;
break;
}
obj->irqHandleOC(obj, channel);
}
}
/**
* @brief Period elapsed callback in non-blocking mode
* @param timer_id : id of the timer
* @retval None
*/
void HAL_TIMx_PeriodElapsedCallback(stimer_t *obj)
{
GPIO_TypeDef* port = get_GPIO_Port(STM_PORT(obj->pin));
if(port != NULL) {
if(obj->pinInfo.count != 0){
if (obj->pinInfo.count > 0) obj->pinInfo.count--;
obj->pinInfo.state = (obj->pinInfo.state == 0)? 1 : 0;
digital_io_write(port, STM_GPIO_PIN(obj->pin), obj->pinInfo.state);
}
else {
digital_io_write(port, STM_GPIO_PIN(obj->pin), 0);
}
}
}
/**
* @brief Period elapsed callback in non-blocking mode
* @param htim : TIM handle
* @retval None
*/
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
stimer_t *obj = get_timer_obj(htim);
if(obj->irqHandle != NULL) {
obj->irqHandle(obj);
}
}
/**
* @brief This function will set the tone timer to the required value and
* configure the pin to toggle.
* @param port : pointer to GPIO_TypeDef
* @param pin : pin number to toggle
* @param frequency : toggle frequency (in hertz)
* @param duration : toggle time
* @retval None
*/
void TimerPinInit(stimer_t *obj, uint32_t frequency, uint32_t duration)
{
uint8_t end = 0;
uint32_t timClkFreq = 0;
// TIMER_TONE freq is twice frequency
uint32_t timFreq = 2*frequency;
uint32_t prescaler = 1;
uint32_t period = 0;
uint32_t scale = 0;
if(frequency > MAX_FREQ)
return;
obj->timer = TIMER_TONE;
obj->pinInfo.state = 0;
if(frequency == 0) {
TimerPinDeinit(obj);
return;
}
//Calculate the toggle count
if (duration > 0) {
obj->pinInfo.count = ((timFreq * duration) / 1000);
}
else {
obj->pinInfo.count = -1;
}
digital_io_init(obj->pin, GPIO_MODE_OUTPUT_PP, GPIO_NOPULL);
timClkFreq = getTimerClkFreq(obj->timer);
// Do this once
scale = timClkFreq / timFreq;
while(end == 0) {
period = ((uint32_t)( scale / prescaler)) - 1;
if((period >= 0xFFFF) && (prescaler < 0xFFFF))
prescaler++; //prescaler *= 2;
else
end = 1;
}
if((period < 0xFFFF) && (prescaler < 0xFFFF)) {
obj->irqHandle = HAL_TIMx_PeriodElapsedCallback;
TimerHandleInit(obj, period, prescaler-1);
}
else {
TimerHandleDeinit(obj);
}
}
/**
* @brief This function will reset the tone timer
* @param port : pointer to port
* @param pin : pin number to toggle
* @retval None
*/
void TimerPinDeinit(stimer_t *obj)
{
TimerHandleDeinit(obj);
digital_io_init(obj->pin, GPIO_MODE_INPUT, GPIO_NOPULL);
}
/**
* @brief Get the counter value.
* @param timer_id : id of the timer
* @retval Counter value
*/
uint32_t getTimerCounter(stimer_t *obj)
{
return __HAL_TIM_GET_COUNTER(&(obj->handle));
}
/**
* @brief Set the counter value.
* @param timer_id : id of the timer
* @param value : counter value
* @retval None
*/
void setTimerCounter(stimer_t *obj, uint32_t value)
{
__HAL_TIM_SET_COUNTER(&(obj->handle), value);
}
/**
* @brief Set the TIM Capture Compare Register value.
* @param timer_id : id of the timer
* @param channel : TIM Channels to be configured.
* @param value : register new register.
* @retval None
*/
void setCCRRegister(stimer_t *obj, uint32_t channel, uint32_t value)
{
__HAL_TIM_SET_COMPARE(&(obj->handle), channel*4, value);
}
/**
* @brief Set the TIM Capture Compare Register value.
* @param timer_id : id of the timer
* @param channel : TIM Channels to be configured.
* @retval CRR value.