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
|
/**************************************************************************//**
* @file usci_spi.c
* @version V3.00
* @brief M460 series USCI_SPI driver source file
*
* @copyright SPDX-License-Identifier: Apache-2.0
* @copyright Copyright (C) 2021 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include "NuMicro.h"
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup USCI_SPI_Driver USCI_SPI Driver
@{
*/
/** @addtogroup USCI_SPI_EXPORTED_FUNCTIONS USCI_SPI Exported Functions
@{
*/
/**
* @brief This function make USCI_SPI module be ready to transfer.
* By default, the USCI_SPI transfer sequence is MSB first, the slave selection
* signal is active low and the automatic slave select function is disabled. In
* Slave mode, the u32BusClock must be NULL and the USCI_SPI clock
* divider setting will be 0.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @param[in] u32MasterSlave Decide the USCI_SPI module is operating in master mode or in slave mode. Valid values are:
* - \ref USPI_SLAVE
* - \ref USPI_MASTER
* @param[in] u32SPIMode Decide the transfer timing. Valid values are:
* - \ref USPI_MODE_0
* - \ref USPI_MODE_1
* - \ref USPI_MODE_2
* - \ref USPI_MODE_3
* @param[in] u32DataWidth The data width of a USCI_SPI transaction.
* @param[in] u32BusClock The expected frequency of USCI_SPI bus clock in Hz.
* @return Actual frequency of USCI_SPI peripheral clock.
*/
uint32_t USPI_Open(USPI_T *uspi, uint32_t u32MasterSlave, uint32_t u32SPIMode, uint32_t u32DataWidth, uint32_t u32BusClock)
{
uint32_t u32ClkDiv = 0ul;
uint32_t u32Pclk;
uint32_t u32UspiClk = 0ul;
if (uspi == (USPI_T *)USPI0)
{
u32Pclk = CLK_GetPCLK0Freq();
}
if (u32BusClock != 0ul)
{
u32ClkDiv = (uint32_t)((((((u32Pclk / 2ul) * 10ul) / (u32BusClock)) + 5ul) / 10ul) - 1ul); /* Compute proper divider for USCI_SPI clock */
}
else {}
/* Enable USCI_SPI protocol */
uspi->CTL &= ~USPI_CTL_FUNMODE_Msk;
uspi->CTL = 1ul << USPI_CTL_FUNMODE_Pos;
/* Data format configuration */
if (u32DataWidth == 16ul)
{
u32DataWidth = 0ul;
}
else {}
uspi->LINECTL &= ~USPI_LINECTL_DWIDTH_Msk;
uspi->LINECTL |= (u32DataWidth << USPI_LINECTL_DWIDTH_Pos);
/* MSB data format */
uspi->LINECTL &= ~USPI_LINECTL_LSB_Msk;
/* Set slave selection signal active low */
if (u32MasterSlave == USPI_MASTER)
{
uspi->LINECTL |= USPI_LINECTL_CTLOINV_Msk;
}
else
{
uspi->CTLIN0 |= USPI_CTLIN0_ININV_Msk;
}
/* Set operating mode and transfer timing */
uspi->PROTCTL &= ~(USPI_PROTCTL_SCLKMODE_Msk | USPI_PROTCTL_AUTOSS_Msk | USPI_PROTCTL_SLAVE_Msk);
uspi->PROTCTL |= (u32MasterSlave | u32SPIMode);
/* Set USCI_SPI bus clock */
uspi->BRGEN &= ~USPI_BRGEN_CLKDIV_Msk;
uspi->BRGEN |= (u32ClkDiv << USPI_BRGEN_CLKDIV_Pos);
uspi->PROTCTL |= USPI_PROTCTL_PROTEN_Msk;
if (u32BusClock != 0ul)
{
u32UspiClk = (uint32_t)(u32Pclk / ((u32ClkDiv + 1ul) << 1));
}
else {}
return u32UspiClk;
}
/**
* @brief Disable USCI_SPI function mode.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @return None
*/
void USPI_Close(USPI_T *uspi)
{
uspi->CTL &= ~USPI_CTL_FUNMODE_Msk;
}
/**
* @brief Clear Rx buffer.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @return None
*/
void USPI_ClearRxBuf(USPI_T *uspi)
{
uspi->BUFCTL |= USPI_BUFCTL_RXCLR_Msk;
}
/**
* @brief Clear Tx buffer.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @return None
*/
void USPI_ClearTxBuf(USPI_T *uspi)
{
uspi->BUFCTL |= USPI_BUFCTL_TXCLR_Msk;
}
/**
* @brief Disable the automatic slave select function.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @return None
*/
void USPI_DisableAutoSS(USPI_T *uspi)
{
uspi->PROTCTL &= ~(USPI_PROTCTL_AUTOSS_Msk | USPI_PROTCTL_SS_Msk);
}
/**
* @brief Enable the automatic slave select function. Only available in Master mode.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @param[in] u32SSPinMask This parameter is not used.
* @param[in] u32ActiveLevel The active level of slave select signal. Valid values are:
* - \ref USPI_SS_ACTIVE_HIGH
* - \ref USPI_SS_ACTIVE_LOW
* @return None
*/
void USPI_EnableAutoSS(USPI_T *uspi, uint32_t u32SSPinMask, uint32_t u32ActiveLevel)
{
uspi->LINECTL = (uspi->LINECTL & ~USPI_LINECTL_CTLOINV_Msk) | u32ActiveLevel;
uspi->PROTCTL |= USPI_PROTCTL_AUTOSS_Msk;
}
/**
* @brief Set the USCI_SPI bus clock. Only available in Master mode.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @param[in] u32BusClock The expected frequency of USCI_SPI bus clock.
* @return Actual frequency of USCI_SPI peripheral clock.
*/
uint32_t USPI_SetBusClock(USPI_T *uspi, uint32_t u32BusClock)
{
uint32_t u32ClkDiv;
uint32_t u32Pclk = 0UL;
if (uspi == USPI0)
{
u32Pclk = CLK_GetPCLK0Freq();
}
u32ClkDiv = (uint32_t)((((((u32Pclk / 2ul) * 10ul) / (u32BusClock)) + 5ul) / 10ul) - 1ul); /* Compute proper divider for USCI_SPI clock */
/* Set USCI_SPI bus clock */
uspi->BRGEN &= ~USPI_BRGEN_CLKDIV_Msk;
uspi->BRGEN |= (u32ClkDiv << USPI_BRGEN_CLKDIV_Pos);
return (u32Pclk / ((u32ClkDiv + 1ul) << 1));
}
/**
* @brief Get the actual frequency of USCI_SPI bus clock. Only available in Master mode.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @return Actual USCI_SPI bus clock frequency.
*/
uint32_t USPI_GetBusClock(USPI_T *uspi)
{
uint32_t u32BusClk = 0UL;
uint32_t u32ClkDiv;
u32ClkDiv = (uspi->BRGEN & USPI_BRGEN_CLKDIV_Msk) >> USPI_BRGEN_CLKDIV_Pos;
if (uspi == USPI0)
{
u32BusClk = (uint32_t)(CLK_GetPCLK0Freq() / ((u32ClkDiv + 1ul) << 1));
}
return u32BusClk;
}
/**
* @brief Enable related interrupts specified by u32Mask parameter.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @param[in] u32Mask The combination of all related interrupt enable bits.
* Each bit corresponds to a interrupt bit.
* This parameter decides which interrupts will be enabled. Valid values are:
* - \ref USPI_SSINACT_INT_MASK
* - \ref USPI_SSACT_INT_MASK
* - \ref USPI_SLVTO_INT_MASK
* - \ref USPI_SLVBE_INT_MASK
* - \ref USPI_TXUDR_INT_MASK
* - \ref USPI_RXOV_INT_MASK
* - \ref USPI_TXST_INT_MASK
* - \ref USPI_TXEND_INT_MASK
* - \ref USPI_RXST_INT_MASK
* - \ref USPI_RXEND_INT_MASK
* @return None
*/
void USPI_EnableInt(USPI_T *uspi, uint32_t u32Mask)
{
/* Enable slave selection signal inactive interrupt flag */
if ((u32Mask & USPI_SSINACT_INT_MASK) == USPI_SSINACT_INT_MASK)
{
uspi->PROTIEN |= USPI_PROTIEN_SSINAIEN_Msk;
}
else {}
/* Enable slave selection signal active interrupt flag */
if ((u32Mask & USPI_SSACT_INT_MASK) == USPI_SSACT_INT_MASK)
{
uspi->PROTIEN |= USPI_PROTIEN_SSACTIEN_Msk;
}
else {}
/* Enable slave time-out interrupt flag */
if ((u32Mask & USPI_SLVTO_INT_MASK) == USPI_SLVTO_INT_MASK)
{
uspi->PROTIEN |= USPI_PROTIEN_SLVTOIEN_Msk;
}
else {}
/* Enable slave bit count error interrupt flag */
if ((u32Mask & USPI_SLVBE_INT_MASK) == USPI_SLVBE_INT_MASK)
{
uspi->PROTIEN |= USPI_PROTIEN_SLVBEIEN_Msk;
}
else {}
/* Enable TX under run interrupt flag */
if ((u32Mask & USPI_TXUDR_INT_MASK) == USPI_TXUDR_INT_MASK)
{
uspi->BUFCTL |= USPI_BUFCTL_TXUDRIEN_Msk;
}
else {}
/* Enable RX overrun interrupt flag */
if ((u32Mask & USPI_RXOV_INT_MASK) == USPI_RXOV_INT_MASK)
{
uspi->BUFCTL |= USPI_BUFCTL_RXOVIEN_Msk;
}
else {}
/* Enable TX start interrupt flag */
if ((u32Mask & USPI_TXST_INT_MASK) == USPI_TXST_INT_MASK)
{
uspi->INTEN |= USPI_INTEN_TXSTIEN_Msk;
}
else {}
/* Enable TX end interrupt flag */
if ((u32Mask & USPI_TXEND_INT_MASK) == USPI_TXEND_INT_MASK)
{
uspi->INTEN |= USPI_INTEN_TXENDIEN_Msk;
}
else {}
/* Enable RX start interrupt flag */
if ((u32Mask & USPI_RXST_INT_MASK) == USPI_RXST_INT_MASK)
{
uspi->INTEN |= USPI_INTEN_RXSTIEN_Msk;
}
else {}
/* Enable RX end interrupt flag */
if ((u32Mask & USPI_RXEND_INT_MASK) == USPI_RXEND_INT_MASK)
{
uspi->INTEN |= USPI_INTEN_RXENDIEN_Msk;
}
else {}
}
/**
* @brief Disable related interrupts specified by u32Mask parameter.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @param[in] u32Mask The combination of all related interrupt enable bits.
* Each bit corresponds to a interrupt bit.
* This parameter decides which interrupts will be disabled. Valid values are:
* - \ref USPI_SSINACT_INT_MASK
* - \ref USPI_SSACT_INT_MASK
* - \ref USPI_SLVTO_INT_MASK
* - \ref USPI_SLVBE_INT_MASK
* - \ref USPI_TXUDR_INT_MASK
* - \ref USPI_RXOV_INT_MASK
* - \ref USPI_TXST_INT_MASK
* - \ref USPI_TXEND_INT_MASK
* - \ref USPI_RXST_INT_MASK
* - \ref USPI_RXEND_INT_MASK
* @return None
*/
void USPI_DisableInt(USPI_T *uspi, uint32_t u32Mask)
{
/* Disable slave selection signal inactive interrupt flag */
if ((u32Mask & USPI_SSINACT_INT_MASK) == USPI_SSINACT_INT_MASK)
{
uspi->PROTIEN &= ~USPI_PROTIEN_SSINAIEN_Msk;
}
else {}
/* Disable slave selection signal active interrupt flag */
if ((u32Mask & USPI_SSACT_INT_MASK) == USPI_SSACT_INT_MASK)
{
uspi->PROTIEN &= ~USPI_PROTIEN_SSACTIEN_Msk;
}
else {}
/* Disable slave time-out interrupt flag */
if ((u32Mask & USPI_SLVTO_INT_MASK) == USPI_SLVTO_INT_MASK)
{
uspi->PROTIEN &= ~USPI_PROTIEN_SLVTOIEN_Msk;
}
else {}
/* Disable slave bit count error interrupt flag */
if ((u32Mask & USPI_SLVBE_INT_MASK) == USPI_SLVBE_INT_MASK)
{
uspi->PROTIEN &= ~USPI_PROTIEN_SLVBEIEN_Msk;
}
else {}
/* Disable TX under run interrupt flag */
if ((u32Mask & USPI_TXUDR_INT_MASK) == USPI_TXUDR_INT_MASK)
{
uspi->BUFCTL &= ~USPI_BUFCTL_TXUDRIEN_Msk;
}
else {}
/* Disable RX overrun interrupt flag */
if ((u32Mask & USPI_RXOV_INT_MASK) == USPI_RXOV_INT_MASK)
{
uspi->BUFCTL &= ~USPI_BUFCTL_RXOVIEN_Msk;
}
else {}
/* Disable TX start interrupt flag */
if ((u32Mask & USPI_TXST_INT_MASK) == USPI_TXST_INT_MASK)
{
uspi->INTEN &= ~USPI_INTEN_TXSTIEN_Msk;
}
else {}
/* Disable TX end interrupt flag */
if ((u32Mask & USPI_TXEND_INT_MASK) == USPI_TXEND_INT_MASK)
{
uspi->INTEN &= ~USPI_INTEN_TXENDIEN_Msk;
}
else {}
/* Disable RX start interrupt flag */
if ((u32Mask & USPI_RXST_INT_MASK) == USPI_RXST_INT_MASK)
{
uspi->INTEN &= ~USPI_INTEN_RXSTIEN_Msk;
}
else {}
/* Disable RX end interrupt flag */
if ((u32Mask & USPI_RXEND_INT_MASK) == USPI_RXEND_INT_MASK)
{
uspi->INTEN &= ~USPI_INTEN_RXENDIEN_Msk;
}
else {}
}
/**
* @brief Get interrupt flag.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @param[in] u32Mask The combination of all related interrupt sources.
* Each bit corresponds to a interrupt source.
* This parameter decides which interrupt flags will be read. It is combination of:
* - \ref USPI_SSINACT_INT_MASK
* - \ref USPI_SSACT_INT_MASK
* - \ref USPI_SLVTO_INT_MASK
* - \ref USPI_SLVBE_INT_MASK
* - \ref USPI_TXUDR_INT_MASK
* - \ref USPI_RXOV_INT_MASK
* - \ref USPI_TXST_INT_MASK
* - \ref USPI_TXEND_INT_MASK
* - \ref USPI_RXST_INT_MASK
* - \ref USPI_RXEND_INT_MASK
* @return Interrupt flags of selected sources.
*/
uint32_t USPI_GetIntFlag(USPI_T *uspi, uint32_t u32Mask)
{
uint32_t u32TmpFlag;
uint32_t u32IntFlag = 0ul;
/* Check slave selection signal inactive interrupt flag */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SSINAIF_Msk;
if (((u32Mask & USPI_SSINACT_INT_MASK) == USPI_SSINACT_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_SSINAIF_Msk))
{
u32IntFlag |= USPI_SSINACT_INT_MASK;
}
else {}
/* Check slave selection signal active interrupt flag */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SSACTIF_Msk;
if (((u32Mask & USPI_SSACT_INT_MASK) == USPI_SSACT_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_SSACTIF_Msk))
{
u32IntFlag |= USPI_SSACT_INT_MASK;
}
else {}
/* Check slave time-out interrupt flag */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SLVTOIF_Msk;
if (((u32Mask & USPI_SLVTO_INT_MASK) == USPI_SLVTO_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_SLVTOIF_Msk))
{
u32IntFlag |= USPI_SLVTO_INT_MASK;
}
else {}
/* Check slave bit count error interrupt flag */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SLVBEIF_Msk;
if (((u32Mask & USPI_SLVBE_INT_MASK) == USPI_SLVBE_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_SLVBEIF_Msk))
{
u32IntFlag |= USPI_SLVBE_INT_MASK;
}
else {}
/* Check TX under run interrupt flag */
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_TXUDRIF_Msk;
if (((u32Mask & USPI_TXUDR_INT_MASK) == USPI_TXUDR_INT_MASK) && (u32TmpFlag == USPI_BUFSTS_TXUDRIF_Msk))
{
u32IntFlag |= USPI_TXUDR_INT_MASK;
}
else {}
/* Check RX overrun interrupt flag */
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_RXOVIF_Msk;
if (((u32Mask & USPI_RXOV_INT_MASK) == USPI_RXOV_INT_MASK) && (u32TmpFlag == USPI_BUFSTS_RXOVIF_Msk))
{
u32IntFlag |= USPI_RXOV_INT_MASK;
}
else {}
/* Check TX start interrupt flag */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_TXSTIF_Msk;
if (((u32Mask & USPI_TXST_INT_MASK) == USPI_TXST_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_TXSTIF_Msk))
{
u32IntFlag |= USPI_TXST_INT_MASK;
}
else {}
/* Check TX end interrupt flag */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_TXENDIF_Msk;
if (((u32Mask & USPI_TXEND_INT_MASK) == USPI_TXEND_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_TXENDIF_Msk))
{
u32IntFlag |= USPI_TXEND_INT_MASK;
}
else {}
/* Check RX start interrupt flag */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_RXSTIF_Msk;
if (((u32Mask & USPI_RXST_INT_MASK) == USPI_RXST_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_RXSTIF_Msk))
{
u32IntFlag |= USPI_RXST_INT_MASK;
}
else {}
/* Check RX end interrupt flag */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_RXENDIF_Msk;
if (((u32Mask & USPI_RXEND_INT_MASK) == USPI_RXEND_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_RXENDIF_Msk))
{
u32IntFlag |= USPI_RXEND_INT_MASK;
}
else {}
return u32IntFlag;
}
/**
* @brief Clear interrupt flag.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @param[in] u32Mask The combination of all related interrupt sources.
* Each bit corresponds to a interrupt source.
* This parameter decides which interrupt flags will be cleared. It could be the combination of:
* - \ref USPI_SSINACT_INT_MASK
* - \ref USPI_SSACT_INT_MASK
* - \ref USPI_SLVTO_INT_MASK
* - \ref USPI_SLVBE_INT_MASK
* - \ref USPI_TXUDR_INT_MASK
* - \ref USPI_RXOV_INT_MASK
* - \ref USPI_TXST_INT_MASK
* - \ref USPI_TXEND_INT_MASK
* - \ref USPI_RXST_INT_MASK
* - \ref USPI_RXEND_INT_MASK
* @return None
*/
void USPI_ClearIntFlag(USPI_T *uspi, uint32_t u32Mask)
{
/* Clear slave selection signal inactive interrupt flag */
if ((u32Mask & USPI_SSINACT_INT_MASK) == USPI_SSINACT_INT_MASK)
{
uspi->PROTSTS = USPI_PROTSTS_SSINAIF_Msk;
}
else {}
/* Clear slave selection signal active interrupt flag */
if ((u32Mask & USPI_SSACT_INT_MASK) == USPI_SSACT_INT_MASK)
{
uspi->PROTSTS = USPI_PROTSTS_SSACTIF_Msk;
}
else {}
/* Clear slave time-out interrupt flag */
if ((u32Mask & USPI_SLVTO_INT_MASK) == USPI_SLVTO_INT_MASK)
{
uspi->PROTSTS = USPI_PROTSTS_SLVTOIF_Msk;
}
else {}
/* Clear slave bit count error interrupt flag */
if ((u32Mask & USPI_SLVBE_INT_MASK) == USPI_SLVBE_INT_MASK)
{
uspi->PROTSTS = USPI_PROTSTS_SLVBEIF_Msk;
}
else {}
/* Clear TX under run interrupt flag */
if ((u32Mask & USPI_TXUDR_INT_MASK) == USPI_TXUDR_INT_MASK)
{
uspi->BUFSTS = USPI_BUFSTS_TXUDRIF_Msk;
}
else {}
/* Clear RX overrun interrupt flag */
if ((u32Mask & USPI_RXOV_INT_MASK) == USPI_RXOV_INT_MASK)
{
uspi->BUFSTS = USPI_BUFSTS_RXOVIF_Msk;
}
else {}
/* Clear TX start interrupt flag */
if ((u32Mask & USPI_TXST_INT_MASK) == USPI_TXST_INT_MASK)
{
uspi->PROTSTS = USPI_PROTSTS_TXSTIF_Msk;
}
else {}
/* Clear TX end interrupt flag */
if ((u32Mask & USPI_TXEND_INT_MASK) == USPI_TXEND_INT_MASK)
{
uspi->PROTSTS = USPI_PROTSTS_TXENDIF_Msk;
}
else {}
/* Clear RX start interrupt flag */
if ((u32Mask & USPI_RXST_INT_MASK) == USPI_RXST_INT_MASK)
{
uspi->PROTSTS = USPI_PROTSTS_RXSTIF_Msk;
}
else {}
/* Clear RX end interrupt flag */
if ((u32Mask & USPI_RXEND_INT_MASK) == USPI_RXEND_INT_MASK)
{
uspi->PROTSTS = USPI_PROTSTS_RXENDIF_Msk;
}
else {}
}
/**
* @brief Get USCI_SPI status.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @param[in] u32Mask The combination of all related sources.
* Each bit corresponds to a source.
* This parameter decides which flags will be read. It is combination of:
* - \ref USPI_BUSY_MASK
* - \ref USPI_RX_EMPTY_MASK
* - \ref USPI_RX_FULL_MASK
* - \ref USPI_TX_EMPTY_MASK
* - \ref USPI_TX_FULL_MASK
* - \ref USPI_SSLINE_STS_MASK
* @return Flags of selected sources.
*/
uint32_t USPI_GetStatus(USPI_T *uspi, uint32_t u32Mask)
{
uint32_t u32Flag = 0ul;
uint32_t u32TmpFlag;
/* Check busy status */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_BUSY_Msk;
if (((u32Mask & USPI_BUSY_MASK) == USPI_BUSY_MASK) && (u32TmpFlag & USPI_PROTSTS_BUSY_Msk))
{
u32Flag |= USPI_BUSY_MASK;
}
else {}
/* Check RX empty flag */
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_RXEMPTY_Msk;
if (((u32Mask & USPI_RX_EMPTY_MASK) == USPI_RX_EMPTY_MASK) && (u32TmpFlag == USPI_BUFSTS_RXEMPTY_Msk))
{
u32Flag |= USPI_RX_EMPTY_MASK;
}
else {}
/* Check RX full flag */
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_RXFULL_Msk;
if (((u32Mask & USPI_RX_FULL_MASK) == USPI_RX_FULL_MASK) && (u32TmpFlag == USPI_BUFSTS_RXFULL_Msk))
{
u32Flag |= USPI_RX_FULL_MASK;
}
else {}
/* Check TX empty flag */
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_TXEMPTY_Msk;
if (((u32Mask & USPI_TX_EMPTY_MASK) == USPI_TX_EMPTY_MASK) && (u32TmpFlag == USPI_BUFSTS_TXEMPTY_Msk))
{
u32Flag |= USPI_TX_EMPTY_MASK;
}
else {}
/* Check TX full flag */
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_TXFULL_Msk;
if (((u32Mask & USPI_TX_FULL_MASK) == USPI_TX_FULL_MASK) && (u32TmpFlag == USPI_BUFSTS_TXFULL_Msk))
{
u32Flag |= USPI_TX_FULL_MASK;
}
else {}
/* Check USCI_SPI_SS line status */
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SSLINE_Msk;
if (((u32Mask & USPI_SSLINE_STS_MASK) == USPI_SSLINE_STS_MASK) && (u32TmpFlag & USPI_PROTSTS_SSLINE_Msk))
{
u32Flag |= USPI_SSLINE_STS_MASK;
}
else {}
return u32Flag;
}
/**
* @brief Enable USCI_SPI Wake-up Function.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @return None
*/
void USPI_EnableWakeup(USPI_T *uspi)
{
uspi->WKCTL |= USPI_WKCTL_WKEN_Msk;
}
/**
* @brief Disable USCI_SPI Wake-up Function.
* @param[in] uspi The pointer of the specified USCI_SPI module.
* @return None
*/
void USPI_DisableWakeup(USPI_T *uspi)
{
uspi->WKCTL &= ~USPI_WKCTL_WKEN_Msk;
}
/*@}*/ /* end of group USCI_SPI_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group USCI_SPI_Driver */
/*@}*/ /* end of group Standard_Driver */
|
