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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_STM32F103_IAR/] [STM32F10xFWLib/] [src/] [stm32f10x_nvic.c] - Blame information for rev 582

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1 582 jeremybenn
/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
2
* File Name          : stm32f10x_nvic.c
3
* Author             : MCD Application Team
4
* Date First Issued  : 09/29/2006
5
* Description        : This file provides all the NVIC firmware functions.
6
********************************************************************************
7
* History:
8
* 04/02/2007: V0.2
9
* 02/05/2007: V0.1
10
* 09/29/2006: V0.01
11
********************************************************************************
12
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
13
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
14
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
15
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
16
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
17
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
18
*******************************************************************************/
19
 
20
/* Includes ------------------------------------------------------------------*/
21
#include "stm32f10x_nvic.h"
22
 
23
/* Private typedef -----------------------------------------------------------*/
24
/* Private define ------------------------------------------------------------*/
25
#define AIRC_VECTKEY_MASK    ((u32)0x05FA0000)
26
 
27
/* Private macro -------------------------------------------------------------*/
28
/* Private variables ---------------------------------------------------------*/
29
/* Private function prototypes -----------------------------------------------*/
30
/* Private functions ---------------------------------------------------------*/
31
 
32
/*******************************************************************************
33
* Function Name  : NVIC_DeInit
34
* Description    : Deinitializes the NVIC peripheral registers to their default
35
*                  reset values.
36
* Input          : None
37
* Output         : None
38
* Return         : None
39
*******************************************************************************/
40
void NVIC_DeInit(void)
41
{
42
  u32 index = 0;
43
 
44
  NVIC->Disable[0] = 0xFFFFFFFF;
45
  NVIC->Disable[1] = 0x000007FF;
46
  NVIC->Clear[0] = 0xFFFFFFFF;
47
  NVIC->Clear[1] = 0x000007FF;
48
 
49
  for(index = 0; index < 0x0B; index++)
50
  {
51
     NVIC->Priority[index] = 0x00000000;
52
  }
53
}
54
 
55
/*******************************************************************************
56
* Function Name  : NVIC_SCBDeInit
57
* Description    : Deinitializes the SCB peripheral registers to their default
58
*                  reset values.
59
* Input          : None
60
* Output         : None
61
* Return         : None
62
*******************************************************************************/
63
void NVIC_SCBDeInit(void)
64
{
65
  u32 index = 0x00;
66
 
67
  SCB->IRQControlState = 0x0A000000;
68
  SCB->ExceptionTableOffset = 0x00000000;
69
  SCB->AIRC = AIRC_VECTKEY_MASK;
70
  SCB->SysCtrl = 0x00000000;
71
  SCB->ConfigCtrl = 0x00000000;
72
  for(index = 0; index < 0x03; index++)
73
  {
74
     SCB->SystemPriority[index] = 0;
75
  }
76
  SCB->SysHandlerCtrl = 0x00000000;
77
  SCB->ConfigFaultStatus = 0xFFFFFFFF;
78
  SCB->HardFaultStatus = 0xFFFFFFFF;
79
  SCB->DebugFaultStatus = 0xFFFFFFFF;
80
}
81
 
82
/*******************************************************************************
83
* Function Name  : NVIC_PriorityGroupConfig
84
* Description    : Configures the priority grouping: pre-emption priority
85
*                  and subpriority.
86
* Input          : - NVIC_PriorityGroup: specifies the priority grouping bits
87
*                    length. This parameter can be one of the following values:
88
*                       - NVIC_PriorityGroup_0: 0 bits for pre-emption priority
89
*                         4 bits for subpriority
90
*                       - NVIC_PriorityGroup_1: 1 bits for pre-emption priority
91
*                         3 bits for subpriority
92
*                       - NVIC_PriorityGroup_2: 2 bits for pre-emption priority
93
*                         2 bits for subpriority
94
*                       - NVIC_PriorityGroup_3: 3 bits for pre-emption priority
95
*                         1 bits for subpriority
96
*                       - NVIC_PriorityGroup_4: 4 bits for pre-emption priority
97
*                         0 bits for subpriority
98
* Output         : None
99
* Return         : None
100
*******************************************************************************/
101
void NVIC_PriorityGroupConfig(u32 NVIC_PriorityGroup)
102
{
103
  /* Check the parameters */
104
  assert(IS_NVIC_PRIORITY_GROUP(NVIC_PriorityGroup));
105
 
106
  /* Set the PRIGROUP[10:8] bits according to NVIC_PriorityGroup value */
107
  SCB->AIRC = AIRC_VECTKEY_MASK | NVIC_PriorityGroup;
108
}
109
 
110
/*******************************************************************************
111
* Function Name  : NVIC_Init
112
* Description    : Initializes the NVIC peripheral according to the specified
113
*                  parameters in the NVIC_InitStruct.
114
* Input          : - NVIC_InitStruct: pointer to a NVIC_InitTypeDef structure
115
*                    that contains the configuration information for the
116
*                    specified NVIC peripheral.
117
* Output         : None
118
* Return         : None
119
*******************************************************************************/
120
void NVIC_Init(NVIC_InitTypeDef* NVIC_InitStruct)
121
{
122
  u32 tmppriority = 0x00, tmpreg = 0x00, tmpmask = 0x00;
123
  u32 tmppre = 0, tmpsub = 0x0F;
124
 
125
  /* Check the parameters */
126
  assert(IS_FUNCTIONAL_STATE(NVIC_InitStruct->NVIC_IRQChannelCmd));
127
  assert(IS_NVIC_IRQ_CHANNEL(NVIC_InitStruct->NVIC_IRQChannel));
128
  assert(IS_NVIC_PREEMPTION_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority));
129
  assert(IS_NVIC_SUB_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelSubPriority));
130
 
131
  if (NVIC_InitStruct->NVIC_IRQChannelCmd != DISABLE)
132
  {
133
    /* Compute the Corresponding IRQ Priority --------------------------------*/
134
    tmppriority = (0x700 - (SCB->AIRC & (u32)0x700))>> 0x08;
135
    tmppre = (0x4 - tmppriority);
136
    tmpsub = tmpsub >> tmppriority;
137
 
138
    tmppriority = (u32)NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority << tmppre;
139
    tmppriority |=  NVIC_InitStruct->NVIC_IRQChannelSubPriority & tmpsub;
140
 
141
    tmppriority = tmppriority << 0x04;
142
    tmppriority = ((u32)tmppriority) << ((NVIC_InitStruct->NVIC_IRQChannel & (u8)0x03) * 0x08);
143
 
144
    tmpreg = NVIC->Priority[(NVIC_InitStruct->NVIC_IRQChannel >> 0x02)];
145
    tmpmask = (u32)0xFF << ((NVIC_InitStruct->NVIC_IRQChannel & (u8)0x03) * 0x08);
146
    tmpreg &= ~tmpmask;
147
    tmppriority &= tmpmask;
148
    tmpreg |= tmppriority;
149
 
150
    NVIC->Priority[(NVIC_InitStruct->NVIC_IRQChannel >> 0x02)] = tmpreg;
151
 
152
    /* Enable the Selected IRQ Channels --------------------------------------*/
153
    NVIC->Enable[(NVIC_InitStruct->NVIC_IRQChannel >> 0x05)] =
154
      (u32)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (u8)0x1F);
155
  }
156
  else
157
  {
158
    /* Disable the Selected IRQ Channels -------------------------------------*/
159
    NVIC->Disable[(NVIC_InitStruct->NVIC_IRQChannel >> 0x05)] =
160
      (u32)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (u8)0x1F);
161
  }
162
}
163
 
164
/*******************************************************************************
165
* Function Name  : NVIC_StructInit
166
* Description    : Fills each NVIC_InitStruct member with its default value.
167
* Input          : - NVIC_InitStruct: pointer to a NVIC_InitTypeDef structure which
168
*                    will be initialized.
169
* Output         : None
170
* Return         : None
171
*******************************************************************************/
172
void NVIC_StructInit(NVIC_InitTypeDef* NVIC_InitStruct)
173
{
174
  /* NVIC_InitStruct members default value */
175
  NVIC_InitStruct->NVIC_IRQChannel = 0x00;
176
  NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority = 0x00;
177
  NVIC_InitStruct->NVIC_IRQChannelSubPriority = 0x00;
178
  NVIC_InitStruct->NVIC_IRQChannelCmd = DISABLE;
179
}
180
 
181
/*******************************************************************************
182
* Function Name  : NVIC_SETPRIMASK
183
* Description    : Enables the PRIMASK priority: Raises the execution priority to 0.
184
* Input          : None
185
* Output         : None
186
* Return         : None
187
*******************************************************************************/
188
void NVIC_SETPRIMASK(void)
189
{
190
  __SETPRIMASK();
191
}
192
 
193
/*******************************************************************************
194
* Function Name  : NVIC_RESETPRIMASK
195
* Description    : Disables the PRIMASK priority.
196
* Input          : None
197
* Output         : None
198
* Return         : None
199
*******************************************************************************/
200
void NVIC_RESETPRIMASK(void)
201
{
202
  __RESETPRIMASK();
203
}
204
 
205
/*******************************************************************************
206
* Function Name  : NVIC_SETFAULTMASK
207
* Description    : Enables the FAULTMASK priority: Raises the execution priority to -1.
208
* Input          : None
209
* Output         : None
210
* Return         : None
211
*******************************************************************************/
212
void NVIC_SETFAULTMASK(void)
213
{
214
  __SETFAULTMASK();
215
}
216
 
217
/*******************************************************************************
218
* Function Name  : NVIC_RESETFAULTMASK
219
* Description    : Disables the FAULTMASK priority.
220
* Input          : None
221
* Output         : None
222
* Return         : None
223
*******************************************************************************/
224
void NVIC_RESETFAULTMASK(void)
225
{
226
  __RESETFAULTMASK();
227
}
228
 
229
/*******************************************************************************
230
* Function Name  : NVIC_BASEPRICONFIG
231
* Description    : The execution priority can be changed from 15 (lowest
232
                   configurable priority) to 1.
233
* Input          : None
234
* Output         : None
235
* Return         : None
236
*******************************************************************************/
237
void NVIC_BASEPRICONFIG(u32 NewPriority)
238
{
239
  /* Check the parameters */
240
  assert(IS_NVIC_BASE_PRI(NewPriority));
241
 
242
  __BASEPRICONFIG(NewPriority << 0x04);
243
}
244
 
245
/*******************************************************************************
246
* Function Name  : NVIC_GetBASEPRI
247
* Description    : Returns the BASEPRI mask value.
248
* Input          : None
249
* Output         : None
250
* Return         : BASEPRI register value
251
*******************************************************************************/
252
u32 NVIC_GetBASEPRI(void)
253
{
254
  return (__GetBASEPRI());
255
}
256
 
257
/*******************************************************************************
258
* Function Name  : NVIC_GetCurrentPendingIRQChannel
259
* Description    : Returns the current pending IRQ channel identifier.
260
* Input          : None
261
* Output         : None
262
* Return         : Pending IRQ Channel Identifier.
263
*******************************************************************************/
264
u16 NVIC_GetCurrentPendingIRQChannel(void)
265
{
266
  return ((u16)((SCB->IRQControlState & (u32)0x003FF000) >> 0x0C));
267
}
268
 
269
/*******************************************************************************
270
* Function Name  : NVIC_GetIRQChannelPendingBitStatus
271
* Description    : Checks whether the specified IRQ Channel pending bit is set
272
*                  or not.
273
* Input          : - NVIC_IRQChannel: specifies the interrupt pending bit to check.
274
* Output         : None
275
* Return         : The new state of IRQ Channel pending bit(SET or RESET).
276
*******************************************************************************/
277
ITStatus NVIC_GetIRQChannelPendingBitStatus(u8 NVIC_IRQChannel)
278
{
279
  ITStatus pendingirqstatus = RESET;
280
  u32 tmp = 0x00;
281
 
282
  /* Check the parameters */
283
  assert(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel));
284
 
285
  tmp = ((u32)0x01 << (NVIC_IRQChannel & (u32)0x1F));
286
 
287
  if (((NVIC->Set[(NVIC_IRQChannel >> 0x05)]) & tmp) == tmp)
288
  {
289
    pendingirqstatus = SET;
290
  }
291
  else
292
  {
293
    pendingirqstatus = RESET;
294
  }
295
  return pendingirqstatus;
296
}
297
 
298
/*******************************************************************************
299
* Function Name  : NVIC_SetIRQChannelPendingBit
300
* Description    : Sets the NVIC’s interrupt pending bit.
301
* Input          : - NVIC_IRQChannel: specifies the interrupt pending bit to Set.
302
* Output         : None
303
* Return         : None
304
*******************************************************************************/
305
void NVIC_SetIRQChannelPendingBit(u8 NVIC_IRQChannel)
306
{
307
  /* Check the parameters */
308
  assert(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel));
309
 
310
  *(u32*)0xE000EF00 = (u32)NVIC_IRQChannel;
311
}
312
 
313
/*******************************************************************************
314
* Function Name  : NVIC_ClearIRQChannelPendingBit
315
* Description    : Clears the NVIC’s interrupt pending bit.
316
* Input          : - NVIC_IRQChannel: specifies the interrupt pending bit to clear.
317
* Output         : None
318
* Return         : None
319
*******************************************************************************/
320
void NVIC_ClearIRQChannelPendingBit(u8 NVIC_IRQChannel)
321
{
322
  /* Check the parameters */
323
  assert(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel));
324
 
325
  NVIC->Clear[(NVIC_IRQChannel >> 0x05)] = (u32)0x01 << (NVIC_IRQChannel & (u32)0x1F);
326
}
327
 
328
/*******************************************************************************
329
* Function Name  : NVIC_GetCurrentActiveHandler
330
* Description    : Returns the current active Handler (IRQ Channel and
331
*                  SystemHandler) identifier.
332
* Input          : None
333
* Output         : None
334
* Return         : Active Handler Identifier.
335
*******************************************************************************/
336
u16 NVIC_GetCurrentActiveHandler(void)
337
{
338
  return ((u16)(SCB->IRQControlState & (u32)0x3FF));
339
}
340
 
341
/*******************************************************************************
342
* Function Name  : NVIC_GetIRQChannelActiveBitStatus
343
* Description    : Checks whether the specified IRQ Channel active bit is set
344
*                  or not.
345
* Input          : - NVIC_IRQChannel: specifies the interrupt active bit to check.
346
* Output         : None
347
* Return         : The new state of IRQ Channel active bit(SET or RESET).
348
*******************************************************************************/
349
ITStatus NVIC_GetIRQChannelActiveBitStatus(u8 NVIC_IRQChannel)
350
{
351
  ITStatus activeirqstatus = RESET;
352
  u32 tmp = 0x00;
353
 
354
  /* Check the parameters */
355
  assert(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel));
356
 
357
  tmp = ((u32)0x01 << (NVIC_IRQChannel & (u32)0x1F));
358
 
359
  if (((NVIC->Active[(NVIC_IRQChannel >> 0x05)]) & tmp) == tmp )
360
  {
361
    activeirqstatus = SET;
362
  }
363
  else
364
  {
365
    activeirqstatus = RESET;
366
  }
367
  return activeirqstatus;
368
}
369
 
370
/*******************************************************************************
371
* Function Name  : NVIC_GetCPUID
372
* Description    : Returns the ID number, the version number and the implementation
373
*                  details of the Cortex-M3 core.
374
* Input          : None
375
* Output         : None
376
* Return         : CPU ID.
377
*******************************************************************************/
378
u32 NVIC_GetCPUID(void)
379
{
380
  return (SCB->CPUID);
381
}
382
 
383
/*******************************************************************************
384
* Function Name  : NVIC_SetVectorTable
385
* Description    : Sets the vector table location and Offset.
386
* Input          : - NVIC_VectTab: specifies if the vector table is in RAM or
387
*                    code memory.
388
*                    This parameter can be one of the following values:
389
*                       - NVIC_VectTab_RAM
390
*                       - NVIC_VectTab_FLASH
391
*                  - Offset: Vector Table base offset field.
392
* Output         : None
393
* Return         : None
394
*******************************************************************************/
395
void NVIC_SetVectorTable(u32 NVIC_VectTab, u32 Offset)
396
{
397
  /* Check the parameters */
398
  assert(IS_NVIC_VECTTAB(NVIC_VectTab));
399
  assert(IS_NVIC_OFFSET(Offset));
400
 
401
  SCB->ExceptionTableOffset = (((u32)Offset << 0x07) & (u32)0x1FFFFF80);
402
 
403
  SCB->ExceptionTableOffset |= NVIC_VectTab;
404
}
405
 
406
/*******************************************************************************
407
* Function Name  : NVIC_GenerateSystemReset
408
* Description    : Generates a system reset.
409
* Input          : None
410
* Output         : None
411
* Return         : None
412
*******************************************************************************/
413
void NVIC_GenerateSystemReset(void)
414
{
415
  SCB->AIRC = AIRC_VECTKEY_MASK | (u32)0x04;
416
}
417
 
418
/*******************************************************************************
419
* Function Name  : NVIC_GenerateCoreReset
420
* Description    : Generates a Core (Core + NVIC) reset.
421
* Input          : None
422
* Output         : None
423
* Return         : None
424
*******************************************************************************/
425
void NVIC_GenerateCoreReset(void)
426
{
427
  SCB->AIRC = AIRC_VECTKEY_MASK | (u32)0x01;
428
}
429
 
430
/*******************************************************************************
431
* Function Name  : NVIC_SystemLPConfig
432
* Description    : Selects the condition for the system to enter low power mode.
433
* Input          : - LowPowerMode: Specifies the new mode for the system to enter
434
*                    low power mode.
435
*                    This parameter can be one of the following values:
436
*                       - NVIC_LP_SEVONPEND
437
*                       - NVIC_LP_SLEEPDEEP
438
*                       - NVIC_LP_SLEEPONEXIT
439
*                  - NewState: new state of LP condition.
440
*                    This parameter can be: ENABLE or DISABLE.
441
* Output         : None
442
* Return         : None
443
*******************************************************************************/
444
void NVIC_SystemLPConfig(u8 LowPowerMode, FunctionalState NewState)
445
{
446
  /* Check the parameters */
447
  assert(IS_NVIC_LP(LowPowerMode));
448
  assert(IS_FUNCTIONAL_STATE(NewState));
449
 
450
  if (NewState != DISABLE)
451
  {
452
    SCB->SysCtrl |= LowPowerMode;
453
  }
454
  else
455
  {
456
    SCB->SysCtrl &= (u32)(~(u32)LowPowerMode);
457
  }
458
}
459
 
460
/*******************************************************************************
461
* Function Name  : NVIC_SystemHandlerConfig
462
* Description    : Enables or disables the specified System Handlers.
463
* Input          : - SystemHandler: specifies the system handler to be enabled
464
*                    or disabled.
465
*                    This parameter can be one of the following values:
466
*                       - SystemHandler_MemoryManage
467
*                       - SystemHandler_BusFault
468
*                       - SystemHandler_UsageFault
469
*                  - NewState: new state of  specified System Handlers.
470
*                    This parameter can be: ENABLE or DISABLE.
471
* Output         : None
472
* Return         : None
473
*******************************************************************************/
474
void NVIC_SystemHandlerConfig(u32 SystemHandler, FunctionalState NewState)
475
{
476
  u32 tmpreg = 0x00;
477
 
478
  /* Check the parameters */
479
  assert(IS_CONFIG_SYSTEM_HANDLER(SystemHandler));
480
  assert(IS_FUNCTIONAL_STATE(NewState));
481
 
482
  tmpreg =  (u32)0x01 << (SystemHandler & (u32)0x1F);
483
 
484
  if (NewState != DISABLE)
485
  {
486
    SCB->SysHandlerCtrl |= tmpreg;
487
  }
488
  else
489
  {
490
    SCB->SysHandlerCtrl &= ~tmpreg;
491
  }
492
}
493
 
494
/*******************************************************************************
495
* Function Name  : NVIC_SystemHandlerPriorityConfig
496
* Description    : Configures the specified System Handlers priority.
497
* Input          : - SystemHandler: specifies the system handler to be
498
*                    enabled or disabled.
499
*                    This parameter can be one of the following values:
500
*                       - SystemHandler_MemoryManage
501
*                       - SystemHandler_BusFault
502
*                       - SystemHandler_UsageFault
503
*                       - SystemHandler_SVCall
504
*                       - SystemHandler_DebugMonitor
505
*                       - SystemHandler_PSV
506
*                       - SystemHandler_SysTick
507
*                  - SystemHandlerPreemptionPriority: new priority group of the
508
*                    specified system handlers.
509
*                  - SystemHandlerSubPriority: new sub priority of the specified
510
*                    system handlers.
511
* Output         : None
512
* Return         : None
513
*******************************************************************************/
514
void NVIC_SystemHandlerPriorityConfig(u32 SystemHandler, u8 SystemHandlerPreemptionPriority,
515
                                      u8 SystemHandlerSubPriority)
516
{
517
  u32 tmp1 = 0x00, tmp2 = 0xFF, handlermask = 0x00;
518
  u32 tmppriority = 0x00;
519
 
520
  /* Check the parameters */
521
  assert(IS_PRIORITY_SYSTEM_HANDLER(SystemHandler));
522
  assert(IS_NVIC_PREEMPTION_PRIORITY(SystemHandlerPreemptionPriority));
523
  assert(IS_NVIC_SUB_PRIORITY(SystemHandlerSubPriority));
524
 
525
  tmppriority = (0x700 - (SCB->AIRC & (u32)0x700))>> 0x08;
526
  tmp1 = (0x4 - tmppriority);
527
  tmp2 = tmp2 >> tmppriority;
528
 
529
  tmppriority = (u32)SystemHandlerPreemptionPriority << tmp1;
530
  tmppriority |=  SystemHandlerSubPriority & tmp2;
531
 
532
  tmppriority = tmppriority << 0x04;
533
  tmp1 = SystemHandler & (u32)0xC0;
534
  tmp1 = tmp1 >> 0x06;
535
  tmp2 = (SystemHandler >> 0x08) & (u32)0x03;
536
  tmppriority = tmppriority << (tmp2 * 0x08);
537
  handlermask = (u32)0xFF << (tmp2 * 0x08);
538
 
539
  SCB->SystemPriority[tmp1] &= ~handlermask;
540
  SCB->SystemPriority[tmp1] |= tmppriority;
541
}
542
 
543
/*******************************************************************************
544
* Function Name  : NVIC_GetSystemHandlerPendingBitStatus
545
* Description    : Checks whether the specified System handlers pending bit is
546
*                  set or not.
547
* Input          : - SystemHandler: specifies the system handler pending bit to
548
*                    check.
549
*                    This parameter can be one of the following values:
550
*                       - SystemHandler_MemoryManage
551
*                       - SystemHandler_BusFault
552
*                       - SystemHandler_SVCall
553
* Output         : None
554
* Return         : The new state of System Handler pending bit(SET or RESET).
555
*******************************************************************************/
556
ITStatus NVIC_GetSystemHandlerPendingBitStatus(u32 SystemHandler)
557
{
558
  ITStatus bitstatus  = RESET;
559
  u32 tmp = 0x00, tmppos = 0x00;
560
 
561
  /* Check the parameters */
562
  assert(IS_GET_PENDING_SYSTEM_HANDLER(SystemHandler));
563
 
564
  tmppos = (SystemHandler >> 0x0A);
565
  tmppos &= (u32)0x0F;
566
 
567
  tmppos = (u32)0x01 << tmppos;
568
 
569
  tmp = SCB->SysHandlerCtrl & tmppos;
570
 
571
  if (tmp == tmppos)
572
  {
573
    bitstatus = SET;
574
  }
575
  else
576
  {
577
    bitstatus = RESET;
578
  }
579
  return bitstatus;
580
}
581
 
582
/*******************************************************************************
583
* Function Name  : NVIC_SetSystemHandlerPendingBit
584
* Description    : Sets System Handler pending bit.
585
* Input          : - SystemHandler: specifies the system handler pending bit
586
*                    to be set.
587
*                    This parameter can be one of the following values:
588
*                       - SystemHandler_NMI
589
*                       - SystemHandler_PSV
590
*                       - SystemHandler_SysTick
591
* Output         : None
592
* Return         : None
593
*******************************************************************************/
594
void NVIC_SetSystemHandlerPendingBit(u32 SystemHandler)
595
{
596
  u32 tmp = 0x00;
597
 
598
  /* Check the parameters */
599
  assert(IS_SET_PENDING_SYSTEM_HANDLER(SystemHandler));
600
 
601
  /* Get the System Handler pending bit position */
602
  tmp = SystemHandler & (u32)0x1F;
603
  /* Set the corresponding System Handler pending bit */
604
  SCB->IRQControlState |= ((u32)0x01 << tmp);
605
}
606
 
607
/*******************************************************************************
608
* Function Name  : NVIC_ClearSystemHandlerPendingBit
609
* Description    : Clears System Handler pending bit.
610
* Input          : - SystemHandler: specifies the system handler pending bit to
611
*                    be clear.
612
*                    This parameter can be one of the following values:
613
*                       - SystemHandler_PSV
614
*                       - SystemHandler_SysTick
615
* Output         : None
616
* Return         : None
617
*******************************************************************************/
618
void NVIC_ClearSystemHandlerPendingBit(u32 SystemHandler)
619
{
620
  u32 tmp = 0x00;
621
 
622
  /* Check the parameters */
623
  assert(IS_CLEAR_SYSTEM_HANDLER(SystemHandler));
624
 
625
  /* Get the System Handler pending bit position */
626
  tmp = SystemHandler & (u32)0x1F;
627
  /* Clear the corresponding System Handler pending bit */
628
  SCB->IRQControlState |= ((u32)0x01 << (tmp - 0x01));
629
}
630
 
631
/*******************************************************************************
632
* Function Name  : NVIC_GetSystemHandlerActiveBitStatus
633
* Description    : Checks whether the specified System handlers active bit is
634
*                  set or not.
635
* Input          : - SystemHandler: specifies the system handler active bit to
636
*                    check.
637
*                    This parameter can be one of the following values:
638
*                       - SystemHandler_MemoryManage
639
*                       - SystemHandler_BusFault
640
*                       - SystemHandler_UsageFault
641
*                       - SystemHandler_SVCall
642
*                       - SystemHandler_DebugMonitor
643
*                       - SystemHandler_PSV
644
*                       - SystemHandler_SysTick
645
* Output         : None
646
* Return         : The new state of System Handler active bit(SET or RESET).
647
*******************************************************************************/
648
ITStatus NVIC_GetSystemHandlerActiveBitStatus(u32 SystemHandler)
649
{
650
  ITStatus bitstatus  = RESET;
651
 
652
  u32 tmp = 0x00, tmppos = 0x00;
653
 
654
  /* Check the parameters */
655
  assert(IS_GET_ACTIVE_SYSTEM_HANDLER(SystemHandler));
656
 
657
  tmppos = (SystemHandler >> 0x0E) & (u32)0x0F;
658
 
659
  tmppos = (u32)0x01 << tmppos;
660
 
661
  tmp = SCB->SysHandlerCtrl & tmppos;
662
 
663
  if (tmp == tmppos)
664
  {
665
    bitstatus = SET;
666
  }
667
  else
668
  {
669
    bitstatus = RESET;
670
  }
671
  return bitstatus;
672
}
673
 
674
/*******************************************************************************
675
* Function Name  : NVIC_GetFaultHandlerSources
676
* Description    : Returns the system fault handlers sources.
677
* Input          : - SystemHandler: specifies the system handler to get its fault
678
*                    sources.
679
*                    This parameter can be one of the following values:
680
*                       - SystemHandler_HardFault
681
*                       - SystemHandler_MemoryManage
682
*                       - SystemHandler_BusFault
683
*                       - SystemHandler_UsageFault
684
*                       - SystemHandler_DebugMonitor
685
* Output         : None
686
* Return         : Source of the fault handler.
687
*******************************************************************************/
688
u32 NVIC_GetFaultHandlerSources(u32 SystemHandler)
689
{
690
  u32 faultsources = 0x00;
691
  u32 tmpreg = 0x00, tmppos = 0x00;
692
 
693
  /* Check the parameters */
694
  assert(IS_FAULT_SOURCE_SYSTEM_HANDLER(SystemHandler));
695
 
696
  tmpreg = (SystemHandler >> 0x12) & (u32)0x03;
697
  tmppos = (SystemHandler >> 0x14) & (u32)0x03;
698
 
699
  if (tmpreg == 0x00)
700
  {
701
    faultsources = SCB->HardFaultStatus;
702
  }
703
  else if (tmpreg == 0x01)
704
  {
705
    faultsources = SCB->ConfigFaultStatus >> (tmppos * 0x08);
706
    if (tmppos != 0x02)
707
    {
708
      faultsources &= (u32)0x0F;
709
    }
710
    else
711
    {
712
      faultsources &= (u32)0xFF;
713
    }
714
  }
715
  else
716
  {
717
    faultsources = SCB->DebugFaultStatus;
718
  }
719
  return faultsources;
720
}
721
 
722
/*******************************************************************************
723
* Function Name  : NVIC_GetFaultAddress
724
* Description    : Returns the address of the location that generated a fault
725
*                  handler.
726
* Input          : - SystemHandler: specifies the system handler to get its
727
*                    fault address.
728
*                    This parameter can be one of the following values:
729
*                       - SystemHandler_MemoryManage
730
*                       - SystemHandler_BusFault
731
* Output         : None
732
* Return         : Fault address.
733
*******************************************************************************/
734
u32 NVIC_GetFaultAddress(u32 SystemHandler)
735
{
736
  u32 faultaddress = 0x00;
737
  u32 tmp = 0x00;
738
 
739
  /* Check the parameters */
740
  assert(IS_FAULT_ADDRESS_SYSTEM_HANDLER(SystemHandler));
741
 
742
  tmp = (SystemHandler >> 0x16) & (u32)0x01;
743
 
744
  if (tmp == 0x00)
745
  {
746
    faultaddress = SCB->MemoryManageFaultAddr;
747
  }
748
  else
749
  {
750
    faultaddress = SCB->BusFaultAddr;
751
  }
752
  return faultaddress;
753
}
754
 
755
/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/

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