1 /**
2 ******************************************************************************
3 * @file stm32l5xx_hal_cortex.c
4 * @author MCD Application Team
5 * @brief CORTEX HAL module driver.
6 * This file provides firmware functions to manage the following
7 * functionalities of the CORTEX:
8 * + Initialization and Configuration functions
9 * + Peripheral Control functions
10 *
11 ******************************************************************************
12 * @attention
13 *
14 * Copyright (c) 2019 STMicroelectronics.
15 * All rights reserved.
16 *
17 * This software is licensed under terms that can be found in the LICENSE file in
18 * the root directory of this software component.
19 * If no LICENSE file comes with this software, it is provided AS-IS.
20 *
21 ******************************************************************************
22 @verbatim
23 ==============================================================================
24 ##### How to use this driver #####
25 ==============================================================================
26
27 [..]
28 *** How to configure Interrupts using CORTEX HAL driver ***
29 ===========================================================
30 [..]
31 This section provides functions allowing to configure the NVIC interrupts (IRQ).
32 The Cortex-M33 exceptions are managed by CMSIS functions.
33
34 (#) Configure the NVIC Priority Grouping using HAL_NVIC_SetPriorityGrouping() function.
35 (#) Configure the priority of the selected IRQ Channels using HAL_NVIC_SetPriority().
36 (#) Enable the selected IRQ Channels using HAL_NVIC_EnableIRQ().
37
38 -@- When the NVIC_PRIORITYGROUP_0 is selected, IRQ pre-emption is no more possible.
39 The pending IRQ priority will be managed only by the sub priority.
40
41 -@- IRQ priority order (sorted by highest to lowest priority):
42 (+@) Lowest pre-emption priority
43 (+@) Lowest sub priority
44 (+@) Lowest hardware priority (IRQ number)
45
46 [..]
47 *** How to configure SysTick using CORTEX HAL driver ***
48 ========================================================
49 [..]
50 Setup SysTick Timer for time base.
51
52 (+) The HAL_SYSTICK_Config() function calls the SysTick_Config() function which
53 is a CMSIS function that:
54 (++) Configures the SysTick Reload register with value passed as function parameter.
55 (++) Configures the SysTick IRQ priority to the lowest value (0x07).
56 (++) Resets the SysTick Counter register.
57 (++) Configures the SysTick Counter clock source to be Core Clock Source (HCLK).
58 (++) Enables the SysTick Interrupt.
59 (++) Starts the SysTick Counter.
60
61 (+) You can change the SysTick Clock source to be HCLK_Div8 by calling the macro
62 __HAL_CORTEX_SYSTICKCLK_CONFIG(SYSTICK_CLKSOURCE_HCLK_DIV8) just after the
63 HAL_SYSTICK_Config() function call. The __HAL_CORTEX_SYSTICKCLK_CONFIG() macro is defined
64 inside the stm32l5xx_hal_cortex.h file.
65
66 (+) You can change the SysTick IRQ priority by calling the
67 HAL_NVIC_SetPriority(SysTick_IRQn,...) function just after the HAL_SYSTICK_Config() function
68 call. The HAL_NVIC_SetPriority() call the NVIC_SetPriority() function which is a CMSIS function.
69
70 (+) To adjust the SysTick time base, use the following formula:
71
72 Reload Value = SysTick Counter Clock (Hz) x Desired Time base (s)
73 (++) Reload Value is the parameter to be passed for HAL_SYSTICK_Config() function
74 (++) Reload Value should not exceed 0xFFFFFF
75
76 @endverbatim
77 ******************************************************************************
78
79 The table below gives the allowed values of the pre-emption priority and subpriority according
80 to the Priority Grouping configuration performed by HAL_NVIC_SetPriorityGrouping() function.
81
82 ==========================================================================================================================
83 NVIC_PriorityGroup | NVIC_IRQChannelPreemptionPriority | NVIC_IRQChannelSubPriority | Description
84 ==========================================================================================================================
85 NVIC_PRIORITYGROUP_0 | 0 | 0-7 | 0 bit for pre-emption priority
86 | | | 3 bits for subpriority
87 --------------------------------------------------------------------------------------------------------------------------
88 NVIC_PRIORITYGROUP_1 | 0-1 | 0-3 | 1 bit for pre-emption priority
89 | | | 2 bits for subpriority
90 --------------------------------------------------------------------------------------------------------------------------
91 NVIC_PRIORITYGROUP_2 | 0-3 | 0-1 | 2 bits for pre-emption priority
92 | | | 1 bits for subpriority
93 --------------------------------------------------------------------------------------------------------------------------
94 NVIC_PRIORITYGROUP_3 | 0-7 | 0 | 3 bits for pre-emption priority
95 | | | 0 bit for subpriority
96 ==========================================================================================================================
97
98 ******************************************************************************
99 */
100
101 /* Includes ------------------------------------------------------------------*/
102 #include "stm32l5xx_hal.h"
103
104 /** @addtogroup STM32L5xx_HAL_Driver
105 * @{
106 */
107
108 /** @addtogroup CORTEX
109 * @{
110 */
111
112 #ifdef HAL_CORTEX_MODULE_ENABLED
113
114 /* Private types -------------------------------------------------------------*/
115 /* Private variables ---------------------------------------------------------*/
116 /* Private constants ---------------------------------------------------------*/
117 /* Private macros ------------------------------------------------------------*/
118 /* Private function prototypes -----------------------------------------------*/
119 /** @defgroup CORTEX_Private_Functions CORTEX Private Functions
120 * @{
121 */
122 #if (__MPU_PRESENT == 1)
123 static void MPU_ConfigRegion(MPU_Type* MPUx, MPU_Region_InitTypeDef *MPU_RegionInit);
124 static void MPU_ConfigMemoryAttributes(MPU_Type* MPUx, MPU_Attributes_InitTypeDef *MPU_AttributesInit);
125 #endif /* __MPU_PRESENT */
126 /**
127 * @}
128 */
129
130 /* Exported functions --------------------------------------------------------*/
131
132 /** @addtogroup CORTEX_Exported_Functions
133 * @{
134 */
135
136
137 /** @addtogroup CORTEX_Exported_Functions_Group1
138 * @brief Initialization and Configuration functions
139 *
140 @verbatim
141 ==============================================================================
142 ##### Initialization and Configuration functions #####
143 ==============================================================================
144 [..]
145 This section provides the CORTEX HAL driver functions allowing to configure Interrupts
146 SysTick functionalities
147
148 @endverbatim
149 * @{
150 */
151
152
153 /**
154 * @brief Set the priority grouping field (pre-emption priority and subpriority)
155 * using the required unlock sequence.
156 * @param PriorityGroup The priority grouping bits length.
157 * This parameter can be one of the following values:
158 * @arg NVIC_PRIORITYGROUP_0 0 bit for pre-emption priority,
159 * 3 bits for subpriority
160 * @arg NVIC_PRIORITYGROUP_1 1 bit for pre-emption priority,
161 * 2 bits for subpriority
162 * @arg NVIC_PRIORITYGROUP_2 2 bits for pre-emption priority,
163 * 1 bits for subpriority
164 * @arg NVIC_PRIORITYGROUP_3 3 bits for pre-emption priority,
165 * 0 bit for subpriority
166 * @note When the NVIC_PriorityGroup_0 is selected, IRQ pre-emption is no more possible.
167 * The pending IRQ priority will be managed only by the subpriority.
168 * @retval None
169 */
HAL_NVIC_SetPriorityGrouping(uint32_t PriorityGroup)170 void HAL_NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
171 {
172 /* Check the parameters */
173 assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
174
175 /* Set the PRIGROUP[10:8] bits according to the PriorityGroup parameter value */
176 NVIC_SetPriorityGrouping(PriorityGroup);
177 }
178
179 /**
180 * @brief Set the priority of an interrupt.
181 * @param IRQn External interrupt number.
182 * This parameter can be an enumerator of IRQn_Type enumeration
183 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l5xxxx.h))
184 * @param PreemptPriority The pre-emption priority for the IRQn channel.
185 * This parameter can be a value between 0 and 7
186 * A lower priority value indicates a higher priority
187 * @param SubPriority The subpriority level for the IRQ channel.
188 * This parameter can be a value between 0 and 7
189 * A lower priority value indicates a higher priority.
190 * @retval None
191 */
HAL_NVIC_SetPriority(IRQn_Type IRQn,uint32_t PreemptPriority,uint32_t SubPriority)192 void HAL_NVIC_SetPriority(IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority)
193 {
194 uint32_t prioritygroup;
195
196 /* Check the parameters */
197 assert_param(IS_NVIC_SUB_PRIORITY(SubPriority));
198 assert_param(IS_NVIC_PREEMPTION_PRIORITY(PreemptPriority));
199
200 prioritygroup = NVIC_GetPriorityGrouping();
201
202 NVIC_SetPriority(IRQn, NVIC_EncodePriority(prioritygroup, PreemptPriority, SubPriority));
203 }
204
205 /**
206 * @brief Enable a device specific interrupt in the NVIC interrupt controller.
207 * @note To configure interrupts priority correctly, the NVIC_PriorityGroupConfig()
208 * function should be called before.
209 * @param IRQn External interrupt number.
210 * This parameter can be an enumerator of IRQn_Type enumeration
211 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l5xxxx.h))
212 * @retval None
213 */
HAL_NVIC_EnableIRQ(IRQn_Type IRQn)214 void HAL_NVIC_EnableIRQ(IRQn_Type IRQn)
215 {
216 /* Check the parameters */
217 assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
218
219 /* Enable interrupt */
220 NVIC_EnableIRQ(IRQn);
221 }
222
223 /**
224 * @brief Disable a device specific interrupt in the NVIC interrupt controller.
225 * @param IRQn External interrupt number.
226 * This parameter can be an enumerator of IRQn_Type enumeration
227 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l5xxxx.h))
228 * @retval None
229 */
HAL_NVIC_DisableIRQ(IRQn_Type IRQn)230 void HAL_NVIC_DisableIRQ(IRQn_Type IRQn)
231 {
232 /* Check the parameters */
233 assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
234
235 /* Disable interrupt */
236 NVIC_DisableIRQ(IRQn);
237 }
238
239 /**
240 * @brief Initiate a system reset request to reset the MCU.
241 * @retval None
242 */
HAL_NVIC_SystemReset(void)243 void HAL_NVIC_SystemReset(void)
244 {
245 /* System Reset */
246 NVIC_SystemReset();
247 }
248
249 /**
250 * @brief Initialize the System Timer with interrupt enabled and start the System Tick Timer (SysTick):
251 * Counter is in free running mode to generate periodic interrupts.
252 * @param TicksNumb Specifies the ticks Number of ticks between two interrupts.
253 * @retval status: - 0 Function succeeded.
254 * - 1 Function failed.
255 */
HAL_SYSTICK_Config(uint32_t TicksNumb)256 uint32_t HAL_SYSTICK_Config(uint32_t TicksNumb)
257 {
258 return SysTick_Config(TicksNumb);
259 }
260 /**
261 * @}
262 */
263
264 /** @addtogroup CORTEX_Exported_Functions_Group2
265 * @brief Cortex control functions
266 *
267 @verbatim
268 ==============================================================================
269 ##### Peripheral Control functions #####
270 ==============================================================================
271 [..]
272 This subsection provides a set of functions allowing to control the CORTEX
273 (NVIC, SYSTICK, MPU) functionalities.
274
275
276 @endverbatim
277 * @{
278 */
279
280 /**
281 * @brief Get the priority grouping field from the NVIC Interrupt Controller.
282 * @retval Priority grouping field (SCB->AIRCR [10:8] PRIGROUP field)
283 */
HAL_NVIC_GetPriorityGrouping(void)284 uint32_t HAL_NVIC_GetPriorityGrouping(void)
285 {
286 /* Get the PRIGROUP[10:8] field value */
287 return NVIC_GetPriorityGrouping();
288 }
289
290 /**
291 * @brief Get the priority of an interrupt.
292 * @param IRQn External interrupt number.
293 * This parameter can be an enumerator of IRQn_Type enumeration
294 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l5xxxx.h))
295 * @param PriorityGroup: the priority grouping bits length.
296 * This parameter can be one of the following values:
297 * @arg NVIC_PRIORITYGROUP_0 0 bit for pre-emption priority,
298 * 3 bits for subpriority
299 * @arg NVIC_PRIORITYGROUP_1 1 bit for pre-emption priority,
300 * 2 bits for subpriority
301 * @arg NVIC_PRIORITYGROUP_2 2 bits for pre-emption priority,
302 * 1 bits for subpriority
303 * @arg NVIC_PRIORITYGROUP_3 3 bits for pre-emption priority,
304 * 0 bit for subpriority
305 * @param pPreemptPriority Pointer on the Preemptive priority value (starting from 0).
306 * @param pSubPriority Pointer on the Subpriority value (starting from 0).
307 * @retval None
308 */
HAL_NVIC_GetPriority(IRQn_Type IRQn,uint32_t PriorityGroup,uint32_t * pPreemptPriority,uint32_t * pSubPriority)309 void HAL_NVIC_GetPriority(IRQn_Type IRQn, uint32_t PriorityGroup, uint32_t *pPreemptPriority, uint32_t *pSubPriority)
310 {
311 /* Check the parameters */
312 assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
313 /* Get priority for Cortex-M system or device specific interrupts */
314 NVIC_DecodePriority(NVIC_GetPriority(IRQn), PriorityGroup, pPreemptPriority, pSubPriority);
315 }
316
317 /**
318 * @brief Set Pending bit of an external interrupt.
319 * @param IRQn External interrupt number
320 * This parameter can be an enumerator of IRQn_Type enumeration
321 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l5xxxx.h))
322 * @retval None
323 */
HAL_NVIC_SetPendingIRQ(IRQn_Type IRQn)324 void HAL_NVIC_SetPendingIRQ(IRQn_Type IRQn)
325 {
326 /* Set interrupt pending */
327 NVIC_SetPendingIRQ(IRQn);
328 }
329
330 /**
331 * @brief Get Pending Interrupt (read the pending register in the NVIC
332 * and return the pending bit for the specified interrupt).
333 * @param IRQn External interrupt number.
334 * This parameter can be an enumerator of IRQn_Type enumeration
335 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l5xxxx.h))
336 * @retval status: - 0 Interrupt status is not pending.
337 * - 1 Interrupt status is pending.
338 */
HAL_NVIC_GetPendingIRQ(IRQn_Type IRQn)339 uint32_t HAL_NVIC_GetPendingIRQ(IRQn_Type IRQn)
340 {
341 /* Return 1 if pending else 0 */
342 return NVIC_GetPendingIRQ(IRQn);
343 }
344
345 /**
346 * @brief Clear the pending bit of an external interrupt.
347 * @param IRQn External interrupt number.
348 * This parameter can be an enumerator of IRQn_Type enumeration
349 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l5xxxx.h))
350 * @retval None
351 */
HAL_NVIC_ClearPendingIRQ(IRQn_Type IRQn)352 void HAL_NVIC_ClearPendingIRQ(IRQn_Type IRQn)
353 {
354 /* Clear pending interrupt */
355 NVIC_ClearPendingIRQ(IRQn);
356 }
357
358 /**
359 * @brief Get active interrupt (read the active register in NVIC and return the active bit).
360 * @param IRQn External interrupt number
361 * This parameter can be an enumerator of IRQn_Type enumeration
362 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l5xxxx.h))
363 * @retval status: - 0 Interrupt status is not pending.
364 * - 1 Interrupt status is pending.
365 */
HAL_NVIC_GetActive(IRQn_Type IRQn)366 uint32_t HAL_NVIC_GetActive(IRQn_Type IRQn)
367 {
368 /* Return 1 if active else 0 */
369 return NVIC_GetActive(IRQn);
370 }
371
372 /**
373 * @brief Configure the SysTick clock source.
374 * @param CLKSource specifies the SysTick clock source.
375 * This parameter can be one of the following values:
376 * @arg SYSTICK_CLKSOURCE_HCLK_DIV8: AHB clock divided by 8 selected as SysTick clock source.
377 * @arg SYSTICK_CLKSOURCE_HCLK: AHB clock selected as SysTick clock source.
378 * @retval None
379 */
HAL_SYSTICK_CLKSourceConfig(uint32_t CLKSource)380 void HAL_SYSTICK_CLKSourceConfig(uint32_t CLKSource)
381 {
382 /* Check the parameters */
383 assert_param(IS_SYSTICK_CLK_SOURCE(CLKSource));
384 if (CLKSource == SYSTICK_CLKSOURCE_HCLK)
385 {
386 SysTick->CTRL |= SYSTICK_CLKSOURCE_HCLK;
387 }
388 else
389 {
390 SysTick->CTRL &= ~SYSTICK_CLKSOURCE_HCLK;
391 }
392 }
393
394 /**
395 * @brief Handle SYSTICK interrupt request.
396 * @retval None
397 */
HAL_SYSTICK_IRQHandler(void)398 void HAL_SYSTICK_IRQHandler(void)
399 {
400 HAL_SYSTICK_Callback();
401 }
402
403 /**
404 * @brief SYSTICK callback.
405 * @retval None
406 */
HAL_SYSTICK_Callback(void)407 __weak void HAL_SYSTICK_Callback(void)
408 {
409 /* NOTE : This function should not be modified, when the callback is needed,
410 the HAL_SYSTICK_Callback could be implemented in the user file
411 */
412 }
413
414 #if (__MPU_PRESENT == 1)
415
416 /**
417 * @brief Enable the MPU.
418 * @param MPU_Control Specifies the control mode of the MPU during hard fault,
419 * NMI, FAULTMASK and privileged accessto the default memory
420 * This parameter can be one of the following values:
421 * @arg MPU_HFNMI_PRIVDEF_NONE
422 * @arg MPU_HARDFAULT_NMI
423 * @arg MPU_PRIVILEGED_DEFAULT
424 * @arg MPU_HFNMI_PRIVDEF
425 * @retval None
426 */
HAL_MPU_Enable(uint32_t MPU_Control)427 void HAL_MPU_Enable(uint32_t MPU_Control)
428 {
429 /* Enable the MPU */
430 MPU->CTRL = MPU_Control | MPU_CTRL_ENABLE_Msk;
431
432 /* Enable fault exceptions */
433 SCB->SHCSR |= SCB_SHCSR_MEMFAULTENA_Msk;
434
435 /* Follow ARM recommendation with */
436 /* - Data Memory Barrier and Instruction Synchronization to insure MPU usage */
437 __DMB(); /* Force memory writes before continuing */
438 __ISB(); /* Flush and refill pipeline with updated permissions */
439 }
440
441 /**
442 * @brief Disable the MPU.
443 * @retval None
444 */
HAL_MPU_Disable(void)445 void HAL_MPU_Disable(void)
446 {
447 __DMB(); /* Force any outstanding transfers to complete before disabling MPU */
448
449 /* Disable the MPU */
450 MPU->CTRL &= ~MPU_CTRL_ENABLE_Msk;
451 }
452
453 /**
454 * @brief Initialize and configure the Region and the memory to be protected.
455 * @param MPU_RegionInit Pointer to a MPU_Region_InitTypeDef structure that contains
456 * the initialization and configuration information.
457 * @retval None
458 */
HAL_MPU_ConfigRegion(MPU_Region_InitTypeDef * MPU_RegionInit)459 void HAL_MPU_ConfigRegion(MPU_Region_InitTypeDef *MPU_RegionInit)
460 {
461 MPU_ConfigRegion(MPU, MPU_RegionInit);
462 }
463
464 /**
465 * @brief Initialize and configure the memory attributes.
466 * @param MPU_AttributesInit Pointer to a MPU_Attributes_InitTypeDef structure that contains
467 * the initialization and configuration information.
468 * @retval None
469 */
HAL_MPU_ConfigMemoryAttributes(MPU_Attributes_InitTypeDef * MPU_AttributesInit)470 void HAL_MPU_ConfigMemoryAttributes(MPU_Attributes_InitTypeDef *MPU_AttributesInit)
471 {
472 MPU_ConfigMemoryAttributes(MPU, MPU_AttributesInit);
473 }
474
475 #ifdef MPU_NS
476 /**
477 * @brief Enable the non-secure MPU.
478 * @param MPU_Control Specifies the control mode of the MPU during hard fault,
479 * NMI, FAULTMASK and privileged accessto the default memory
480 * This parameter can be one of the following values:
481 * @arg MPU_HFNMI_PRIVDEF_NONE
482 * @arg MPU_HARDFAULT_NMI
483 * @arg MPU_PRIVILEGED_DEFAULT
484 * @arg MPU_HFNMI_PRIVDEF
485 * @retval None
486 */
HAL_MPU_Enable_NS(uint32_t MPU_Control)487 void HAL_MPU_Enable_NS(uint32_t MPU_Control)
488 {
489 /* Enable the MPU */
490 MPU_NS->CTRL = MPU_Control | MPU_CTRL_ENABLE_Msk;
491
492 /* Enable fault exceptions */
493 SCB_NS->SHCSR |= SCB_SHCSR_MEMFAULTENA_Msk;
494
495 /* Follow ARM recommendation with */
496 /* - Data Memory Barrier and Instruction Synchronization to insure MPU usage */
497 __DMB(); /* Force memory writes before continuing */
498 __ISB(); /* Flush and refill pipeline with updated permissions */
499 }
500
501 /**
502 * @brief Disable the non-secure MPU.
503 * @retval None
504 */
HAL_MPU_Disable_NS(void)505 void HAL_MPU_Disable_NS(void)
506 {
507 __DMB(); /* Force any outstanding transfers to complete before disabling MPU */
508
509 /* Disable the MPU */
510 MPU_NS->CTRL &= ~MPU_CTRL_ENABLE_Msk;
511 }
512
513 /**
514 * @brief Initialize and configure the Region and the memory to be protected for non-secure MPU.
515 * @param MPU_RegionInit Pointer to a MPU_Region_InitTypeDef structure that contains
516 * the initialization and configuration information.
517 * @retval None
518 */
HAL_MPU_ConfigRegion_NS(MPU_Region_InitTypeDef * MPU_RegionInit)519 void HAL_MPU_ConfigRegion_NS(MPU_Region_InitTypeDef *MPU_RegionInit)
520 {
521 MPU_ConfigRegion(MPU_NS, MPU_RegionInit);
522 }
523
524 /**
525 * @brief Initialize and configure the memory attributes for non-secure MPU.
526 * @param MPU_AttributesInit Pointer to a MPU_Attributes_InitTypeDef structure that contains
527 * the initialization and configuration information.
528 * @retval None
529 */
HAL_MPU_ConfigMemoryAttributes_NS(MPU_Attributes_InitTypeDef * MPU_AttributesInit)530 void HAL_MPU_ConfigMemoryAttributes_NS(MPU_Attributes_InitTypeDef *MPU_AttributesInit)
531 {
532 MPU_ConfigMemoryAttributes(MPU_NS, MPU_AttributesInit);
533 }
534 #endif /* MPU_NS */
535
536 #endif /* __MPU_PRESENT */
537
538 /**
539 * @}
540 */
541
542 /**
543 * @}
544 */
545
546 /* Private functions ---------------------------------------------------------*/
547 /** @addtogroup CORTEX_Private_Functions
548 * @{
549 */
550
551 #if (__MPU_PRESENT == 1)
552
MPU_ConfigRegion(MPU_Type * MPUx,MPU_Region_InitTypeDef * MPU_RegionInit)553 static void MPU_ConfigRegion(MPU_Type* MPUx, MPU_Region_InitTypeDef *MPU_RegionInit)
554 {
555 /* Check the parameters */
556 assert_param(IS_MPU_REGION_NUMBER(MPU_RegionInit->Number));
557 assert_param(IS_MPU_REGION_ENABLE(MPU_RegionInit->Enable));
558
559 /* Follow ARM recommendation with Data Memory Barrier prior to MPU configuration */
560 __DMB();
561
562 /* Set the Region number */
563 MPUx->RNR = MPU_RegionInit->Number;
564
565 if (MPU_RegionInit->Enable != MPU_REGION_DISABLE)
566 {
567 /* Check the parameters */
568 assert_param(IS_MPU_INSTRUCTION_ACCESS(MPU_RegionInit->DisableExec));
569 assert_param(IS_MPU_REGION_PERMISSION_ATTRIBUTE(MPU_RegionInit->AccessPermission));
570 assert_param(IS_MPU_ACCESS_SHAREABLE(MPU_RegionInit->IsShareable));
571
572 MPUx->RBAR = (((uint32_t)MPU_RegionInit->BaseAddress & 0xFFFFFFE0U) |
573 ((uint32_t)MPU_RegionInit->IsShareable << MPU_RBAR_SH_Pos) |
574 ((uint32_t)MPU_RegionInit->AccessPermission << MPU_RBAR_AP_Pos) |
575 ((uint32_t)MPU_RegionInit->DisableExec << MPU_RBAR_XN_Pos));
576
577 MPUx->RLAR = (((uint32_t)MPU_RegionInit->LimitAddress & 0xFFFFFFE0U) |
578 ((uint32_t)MPU_RegionInit->AttributesIndex << MPU_RLAR_AttrIndx_Pos) |
579 ((uint32_t)MPU_RegionInit->Enable << MPU_RLAR_EN_Pos));
580 }
581 else
582 {
583 MPUx->RLAR = 0U;
584 MPUx->RBAR = 0U;
585 }
586 }
587
MPU_ConfigMemoryAttributes(MPU_Type * MPUx,MPU_Attributes_InitTypeDef * MPU_AttributesInit)588 static void MPU_ConfigMemoryAttributes(MPU_Type* MPUx, MPU_Attributes_InitTypeDef *MPU_AttributesInit)
589 {
590 __IO uint32_t *mair;
591 uint32_t attr_values;
592 uint32_t attr_number;
593
594 /* Check the parameters */
595 assert_param(IS_MPU_ATTRIBUTES_NUMBER(MPU_AttributesInit->Number));
596 /* No need to check Attributes value as all 0x0..0xFF possible */
597
598 /* Follow ARM recommendation with Data Memory Barrier prior to MPUx configuration */
599 __DMB();
600
601 if(MPU_AttributesInit->Number < MPU_ATTRIBUTES_NUMBER4)
602 {
603 /* Program MPU_MAIR0 */
604 mair = &(MPUx->MAIR0);
605 attr_number = MPU_AttributesInit->Number;
606 }
607 else
608 {
609 /* Program MPU_MAIR1 */
610 mair = &(MPUx->MAIR1);
611 attr_number = (uint32_t)MPU_AttributesInit->Number - 4U;
612 }
613
614 attr_values = *(mair);
615 attr_values &= ~(0xFFU << (attr_number * 8U));
616 *(mair) = attr_values | ((uint32_t)MPU_AttributesInit->Attributes << (attr_number * 8U));
617 }
618
619 #endif /* __MPU_PRESENT */
620
621 /**
622 * @}
623 */
624
625 #endif /* HAL_CORTEX_MODULE_ENABLED */
626
627 /**
628 * @}
629 */
630
631 /**
632 * @}
633 */
634
635
