1 /**
2 ******************************************************************************
3 * @file stm32l4xx_hal.c
4 * @author MCD Application Team
5 * @brief HAL module driver.
6 * This is the common part of the HAL initialization
7 *
8 @verbatim
9 ==============================================================================
10 ##### How to use this driver #####
11 ==============================================================================
12 [..]
13 The common HAL driver contains a set of generic and common APIs that can be
14 used by the PPP peripheral drivers and the user to start using the HAL.
15 [..]
16 The HAL contains two APIs' categories:
17 (+) Common HAL APIs
18 (+) Services HAL APIs
19
20 @endverbatim
21 ******************************************************************************
22 * @attention
23 *
24 * <h2><center>© Copyright (c) 2017 STMicroelectronics.
25 * All rights reserved.</center></h2>
26 *
27 * This software component is licensed by ST under BSD 3-Clause license,
28 * the "License"; You may not use this file except in compliance with the
29 * License. You may obtain a copy of the License at:
30 * opensource.org/licenses/BSD-3-Clause
31 *
32 ******************************************************************************
33 */
34
35 /* Includes ------------------------------------------------------------------*/
36 #include "stm32l4xx_hal.h"
37
38 /** @addtogroup STM32L4xx_HAL_Driver
39 * @{
40 */
41
42 /** @defgroup HAL HAL
43 * @brief HAL module driver
44 * @{
45 */
46
47 #ifdef HAL_MODULE_ENABLED
48
49 /* Private typedef -----------------------------------------------------------*/
50 /* Private define ------------------------------------------------------------*/
51 /**
52 * @brief STM32L4xx HAL Driver version number
53 */
54 #define STM32L4XX_HAL_VERSION_MAIN (0x01U) /*!< [31:24] main version */
55 #define STM32L4XX_HAL_VERSION_SUB1 (0x0BU) /*!< [23:16] sub1 version */
56 #define STM32L4XX_HAL_VERSION_SUB2 (0x01U) /*!< [15:8] sub2 version */
57 #define STM32L4XX_HAL_VERSION_RC (0x00U) /*!< [7:0] release candidate */
58 #define STM32L4XX_HAL_VERSION ((STM32L4XX_HAL_VERSION_MAIN << 24U)\
59 |(STM32L4XX_HAL_VERSION_SUB1 << 16U)\
60 |(STM32L4XX_HAL_VERSION_SUB2 << 8U)\
61 |(STM32L4XX_HAL_VERSION_RC))
62
63 #if defined(VREFBUF)
64 #define VREFBUF_TIMEOUT_VALUE 10U /* 10 ms (to be confirmed) */
65 #endif /* VREFBUF */
66
67 /* ------------ SYSCFG registers bit address in the alias region ------------ */
68 #define SYSCFG_OFFSET (SYSCFG_BASE - PERIPH_BASE)
69 /* --- MEMRMP Register ---*/
70 /* Alias word address of FB_MODE bit */
71 #define MEMRMP_OFFSET SYSCFG_OFFSET
72 #define FB_MODE_BitNumber 8U
73 #define FB_MODE_BB (PERIPH_BB_BASE + (MEMRMP_OFFSET * 32U) + (FB_MODE_BitNumber * 4U))
74
75 /* --- SCSR Register ---*/
76 /* Alias word address of SRAM2ER bit */
77 #define SCSR_OFFSET (SYSCFG_OFFSET + 0x18U)
78 #define BRER_BitNumber 0U
79 #define SCSR_SRAM2ER_BB (PERIPH_BB_BASE + (SCSR_OFFSET * 32U) + (BRER_BitNumber * 4U))
80
81 /* Private macro -------------------------------------------------------------*/
82 /* Private variables ---------------------------------------------------------*/
83 /* Private function prototypes -----------------------------------------------*/
84
85 /* Exported variables --------------------------------------------------------*/
86
87 /** @defgroup HAL_Exported_Variables HAL Exported Variables
88 * @{
89 */
90 __IO uint32_t uwTick;
91 uint32_t uwTickPrio = (1UL << __NVIC_PRIO_BITS); /* Invalid priority */
92 uint32_t uwTickFreq = HAL_TICK_FREQ_DEFAULT; /* 1KHz */
93 /**
94 * @}
95 */
96
97 /* Exported functions --------------------------------------------------------*/
98
99 /** @defgroup HAL_Exported_Functions HAL Exported Functions
100 * @{
101 */
102
103 /** @defgroup HAL_Exported_Functions_Group1 Initialization and de-initialization Functions
104 * @brief Initialization and de-initialization functions
105 *
106 @verbatim
107 ===============================================================================
108 ##### Initialization and de-initialization functions #####
109 ===============================================================================
110 [..] This section provides functions allowing to:
111 (+) Initialize the Flash interface, the NVIC allocation and initial time base
112 clock configuration.
113 (+) De-initialize common part of the HAL.
114 (+) Configure the time base source to have 1ms time base with a dedicated
115 Tick interrupt priority.
116 (++) SysTick timer is used by default as source of time base, but user
117 can eventually implement his proper time base source (a general purpose
118 timer for example or other time source), keeping in mind that Time base
119 duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
120 handled in milliseconds basis.
121 (++) Time base configuration function (HAL_InitTick ()) is called automatically
122 at the beginning of the program after reset by HAL_Init() or at any time
123 when clock is configured, by HAL_RCC_ClockConfig().
124 (++) Source of time base is configured to generate interrupts at regular
125 time intervals. Care must be taken if HAL_Delay() is called from a
126 peripheral ISR process, the Tick interrupt line must have higher priority
127 (numerically lower) than the peripheral interrupt. Otherwise the caller
128 ISR process will be blocked.
129 (++) functions affecting time base configurations are declared as __weak
130 to make override possible in case of other implementations in user file.
131 @endverbatim
132 * @{
133 */
134
135 /**
136 * @brief Configure the Flash prefetch, the Instruction and Data caches,
137 * the time base source, NVIC and any required global low level hardware
138 * by calling the HAL_MspInit() callback function to be optionally defined in user file
139 * stm32l4xx_hal_msp.c.
140 *
141 * @note HAL_Init() function is called at the beginning of program after reset and before
142 * the clock configuration.
143 *
144 * @note In the default implementation the System Timer (Systick) is used as source of time base.
145 * The Systick configuration is based on MSI clock, as MSI is the clock
146 * used after a system Reset and the NVIC configuration is set to Priority group 4.
147 * Once done, time base tick starts incrementing: the tick variable counter is incremented
148 * each 1ms in the SysTick_Handler() interrupt handler.
149 *
150 * @retval HAL status
151 */
HAL_Init(void)152 HAL_StatusTypeDef HAL_Init(void)
153 {
154 HAL_StatusTypeDef status = HAL_OK;
155
156 /* Configure Flash prefetch, Instruction cache, Data cache */
157 /* Default configuration at reset is: */
158 /* - Prefetch disabled */
159 /* - Instruction cache enabled */
160 /* - Data cache enabled */
161 #if (INSTRUCTION_CACHE_ENABLE == 0)
162 __HAL_FLASH_INSTRUCTION_CACHE_DISABLE();
163 #endif /* INSTRUCTION_CACHE_ENABLE */
164
165 #if (DATA_CACHE_ENABLE == 0)
166 __HAL_FLASH_DATA_CACHE_DISABLE();
167 #endif /* DATA_CACHE_ENABLE */
168
169 #if (PREFETCH_ENABLE != 0)
170 __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
171 #endif /* PREFETCH_ENABLE */
172
173 /* Set Interrupt Group Priority */
174 HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
175
176 /* Use SysTick as time base source and configure 1ms tick (default clock after Reset is MSI) */
177 if (HAL_InitTick(TICK_INT_PRIORITY) != HAL_OK)
178 {
179 status = HAL_ERROR;
180 }
181 else
182 {
183 /* Init the low level hardware */
184 HAL_MspInit();
185 }
186
187 /* Return function status */
188 return status;
189 }
190
191 /**
192 * @brief De-initialize common part of the HAL and stop the source of time base.
193 * @note This function is optional.
194 * @retval HAL status
195 */
HAL_DeInit(void)196 HAL_StatusTypeDef HAL_DeInit(void)
197 {
198 /* Reset of all peripherals */
199 __HAL_RCC_APB1_FORCE_RESET();
200 __HAL_RCC_APB1_RELEASE_RESET();
201
202 __HAL_RCC_APB2_FORCE_RESET();
203 __HAL_RCC_APB2_RELEASE_RESET();
204
205 __HAL_RCC_AHB1_FORCE_RESET();
206 __HAL_RCC_AHB1_RELEASE_RESET();
207
208 __HAL_RCC_AHB2_FORCE_RESET();
209 __HAL_RCC_AHB2_RELEASE_RESET();
210
211 __HAL_RCC_AHB3_FORCE_RESET();
212 __HAL_RCC_AHB3_RELEASE_RESET();
213
214 /* De-Init the low level hardware */
215 HAL_MspDeInit();
216
217 /* Return function status */
218 return HAL_OK;
219 }
220
221 /**
222 * @brief Initialize the MSP.
223 * @retval None
224 */
HAL_MspInit(void)225 __weak void HAL_MspInit(void)
226 {
227 /* NOTE : This function should not be modified, when the callback is needed,
228 the HAL_MspInit could be implemented in the user file
229 */
230 }
231
232 /**
233 * @brief DeInitialize the MSP.
234 * @retval None
235 */
HAL_MspDeInit(void)236 __weak void HAL_MspDeInit(void)
237 {
238 /* NOTE : This function should not be modified, when the callback is needed,
239 the HAL_MspDeInit could be implemented in the user file
240 */
241 }
242
243 /**
244 * @brief This function configures the source of the time base:
245 * The time source is configured to have 1ms time base with a dedicated
246 * Tick interrupt priority.
247 * @note This function is called automatically at the beginning of program after
248 * reset by HAL_Init() or at any time when clock is reconfigured by HAL_RCC_ClockConfig().
249 * @note In the default implementation, SysTick timer is the source of time base.
250 * It is used to generate interrupts at regular time intervals.
251 * Care must be taken if HAL_Delay() is called from a peripheral ISR process,
252 * The SysTick interrupt must have higher priority (numerically lower)
253 * than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
254 * The function is declared as __weak to be overwritten in case of other
255 * implementation in user file.
256 * @param TickPriority Tick interrupt priority.
257 * @retval HAL status
258 */
HAL_InitTick(uint32_t TickPriority)259 __weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
260 {
261 HAL_StatusTypeDef status = HAL_OK;
262
263 if (uwTickFreq != 0U)
264 {
265 /*Configure the SysTick to have interrupt in 1ms time basis*/
266 if (HAL_SYSTICK_Config(SystemCoreClock / (1000U / uwTickFreq)) == 0U)
267 {
268 /* Configure the SysTick IRQ priority */
269 if (TickPriority < (1UL << __NVIC_PRIO_BITS))
270 {
271 HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority, 0U);
272 uwTickPrio = TickPriority;
273 }
274 else
275 {
276 status = HAL_ERROR;
277 }
278 }
279 else
280 {
281 status = HAL_ERROR;
282 }
283 }
284 else
285 {
286 status = HAL_ERROR;
287 }
288
289 /* Return function status */
290 return status;
291 }
292
293 /**
294 * @}
295 */
296
297 /** @defgroup HAL_Exported_Functions_Group2 HAL Control functions
298 * @brief HAL Control functions
299 *
300 @verbatim
301 ===============================================================================
302 ##### HAL Control functions #####
303 ===============================================================================
304 [..] This section provides functions allowing to:
305 (+) Provide a tick value in millisecond
306 (+) Provide a blocking delay in millisecond
307 (+) Suspend the time base source interrupt
308 (+) Resume the time base source interrupt
309 (+) Get the HAL API driver version
310 (+) Get the device identifier
311 (+) Get the device revision identifier
312
313 @endverbatim
314 * @{
315 */
316
317 /**
318 * @brief This function is called to increment a global variable "uwTick"
319 * used as application time base.
320 * @note In the default implementation, this variable is incremented each 1ms
321 * in SysTick ISR.
322 * @note This function is declared as __weak to be overwritten in case of other
323 * implementations in user file.
324 * @retval None
325 */
HAL_IncTick(void)326 __weak void HAL_IncTick(void)
327 {
328 uwTick += uwTickFreq;
329 }
330
331 /**
332 * @brief Provide a tick value in millisecond.
333 * @note This function is declared as __weak to be overwritten in case of other
334 * implementations in user file.
335 * @retval tick value
336 */
HAL_GetTick(void)337 __weak uint32_t HAL_GetTick(void)
338 {
339 return uwTick;
340 }
341
342 /**
343 * @brief This function returns a tick priority.
344 * @retval tick priority
345 */
HAL_GetTickPrio(void)346 uint32_t HAL_GetTickPrio(void)
347 {
348 return uwTickPrio;
349 }
350
351 /**
352 * @brief Set new tick Freq.
353 * @param Freq tick frequency
354 * @retval HAL status
355 */
HAL_SetTickFreq(uint32_t Freq)356 HAL_StatusTypeDef HAL_SetTickFreq(uint32_t Freq)
357 {
358 HAL_StatusTypeDef status = HAL_OK;
359 assert_param(IS_TICKFREQ(Freq));
360
361 if (uwTickFreq != Freq)
362 {
363 /* Apply the new tick Freq */
364 status = HAL_InitTick(uwTickPrio);
365 if (status == HAL_OK)
366 {
367 uwTickFreq = Freq;
368 }
369 }
370
371 return status;
372 }
373
374 /**
375 * @brief Return tick frequency.
376 * @retval tick period in Hz
377 */
HAL_GetTickFreq(void)378 uint32_t HAL_GetTickFreq(void)
379 {
380 return uwTickFreq;
381 }
382
383 /**
384 * @brief This function provides minimum delay (in milliseconds) based
385 * on variable incremented.
386 * @note In the default implementation , SysTick timer is the source of time base.
387 * It is used to generate interrupts at regular time intervals where uwTick
388 * is incremented.
389 * @note This function is declared as __weak to be overwritten in case of other
390 * implementations in user file.
391 * @param Delay specifies the delay time length, in milliseconds.
392 * @retval None
393 */
HAL_Delay(uint32_t Delay)394 __weak void HAL_Delay(uint32_t Delay)
395 {
396 uint32_t tickstart = HAL_GetTick();
397 uint32_t wait = Delay;
398
399 /* Add a period to guaranty minimum wait */
400 if (wait < HAL_MAX_DELAY)
401 {
402 wait += (uint32_t)(uwTickFreq);
403 }
404
405 while((HAL_GetTick() - tickstart) < wait)
406 {
407 }
408 }
409
410 /**
411 * @brief Suspend Tick increment.
412 * @note In the default implementation , SysTick timer is the source of time base. It is
413 * used to generate interrupts at regular time intervals. Once HAL_SuspendTick()
414 * is called, the SysTick interrupt will be disabled and so Tick increment
415 * is suspended.
416 * @note This function is declared as __weak to be overwritten in case of other
417 * implementations in user file.
418 * @retval None
419 */
HAL_SuspendTick(void)420 __weak void HAL_SuspendTick(void)
421 {
422 /* Disable SysTick Interrupt */
423 SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
424 }
425
426 /**
427 * @brief Resume Tick increment.
428 * @note In the default implementation , SysTick timer is the source of time base. It is
429 * used to generate interrupts at regular time intervals. Once HAL_ResumeTick()
430 * is called, the SysTick interrupt will be enabled and so Tick increment
431 * is resumed.
432 * @note This function is declared as __weak to be overwritten in case of other
433 * implementations in user file.
434 * @retval None
435 */
HAL_ResumeTick(void)436 __weak void HAL_ResumeTick(void)
437 {
438 /* Enable SysTick Interrupt */
439 SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk;
440 }
441
442 /**
443 * @brief Return the HAL revision.
444 * @retval version : 0xXYZR (8bits for each decimal, R for RC)
445 */
HAL_GetHalVersion(void)446 uint32_t HAL_GetHalVersion(void)
447 {
448 return STM32L4XX_HAL_VERSION;
449 }
450
451 /**
452 * @brief Return the device revision identifier.
453 * @retval Device revision identifier
454 */
HAL_GetREVID(void)455 uint32_t HAL_GetREVID(void)
456 {
457 return((DBGMCU->IDCODE & DBGMCU_IDCODE_REV_ID) >> 16);
458 }
459
460 /**
461 * @brief Return the device identifier.
462 * @retval Device identifier
463 */
HAL_GetDEVID(void)464 uint32_t HAL_GetDEVID(void)
465 {
466 return(DBGMCU->IDCODE & DBGMCU_IDCODE_DEV_ID);
467 }
468
469 /**
470 * @brief Return the first word of the unique device identifier (UID based on 96 bits)
471 * @retval Device identifier
472 */
HAL_GetUIDw0(void)473 uint32_t HAL_GetUIDw0(void)
474 {
475 return(READ_REG(*((uint32_t *)UID_BASE)));
476 }
477
478 /**
479 * @brief Return the second word of the unique device identifier (UID based on 96 bits)
480 * @retval Device identifier
481 */
HAL_GetUIDw1(void)482 uint32_t HAL_GetUIDw1(void)
483 {
484 return(READ_REG(*((uint32_t *)(UID_BASE + 4U))));
485 }
486
487 /**
488 * @brief Return the third word of the unique device identifier (UID based on 96 bits)
489 * @retval Device identifier
490 */
HAL_GetUIDw2(void)491 uint32_t HAL_GetUIDw2(void)
492 {
493 return(READ_REG(*((uint32_t *)(UID_BASE + 8U))));
494 }
495
496 /**
497 * @}
498 */
499
500 /** @defgroup HAL_Exported_Functions_Group3 HAL Debug functions
501 * @brief HAL Debug functions
502 *
503 @verbatim
504 ===============================================================================
505 ##### HAL Debug functions #####
506 ===============================================================================
507 [..] This section provides functions allowing to:
508 (+) Enable/Disable Debug module during SLEEP mode
509 (+) Enable/Disable Debug module during STOP0/STOP1/STOP2 modes
510 (+) Enable/Disable Debug module during STANDBY mode
511
512 @endverbatim
513 * @{
514 */
515
516 /**
517 * @brief Enable the Debug Module during SLEEP mode.
518 * @retval None
519 */
HAL_DBGMCU_EnableDBGSleepMode(void)520 void HAL_DBGMCU_EnableDBGSleepMode(void)
521 {
522 SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
523 }
524
525 /**
526 * @brief Disable the Debug Module during SLEEP mode.
527 * @retval None
528 */
HAL_DBGMCU_DisableDBGSleepMode(void)529 void HAL_DBGMCU_DisableDBGSleepMode(void)
530 {
531 CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
532 }
533
534 /**
535 * @brief Enable the Debug Module during STOP0/STOP1/STOP2 modes.
536 * @retval None
537 */
HAL_DBGMCU_EnableDBGStopMode(void)538 void HAL_DBGMCU_EnableDBGStopMode(void)
539 {
540 SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
541 }
542
543 /**
544 * @brief Disable the Debug Module during STOP0/STOP1/STOP2 modes.
545 * @retval None
546 */
HAL_DBGMCU_DisableDBGStopMode(void)547 void HAL_DBGMCU_DisableDBGStopMode(void)
548 {
549 CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
550 }
551
552 /**
553 * @brief Enable the Debug Module during STANDBY mode.
554 * @retval None
555 */
HAL_DBGMCU_EnableDBGStandbyMode(void)556 void HAL_DBGMCU_EnableDBGStandbyMode(void)
557 {
558 SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
559 }
560
561 /**
562 * @brief Disable the Debug Module during STANDBY mode.
563 * @retval None
564 */
HAL_DBGMCU_DisableDBGStandbyMode(void)565 void HAL_DBGMCU_DisableDBGStandbyMode(void)
566 {
567 CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
568 }
569
570 /**
571 * @}
572 */
573
574 /** @defgroup HAL_Exported_Functions_Group4 HAL SYSCFG configuration functions
575 * @brief HAL SYSCFG configuration functions
576 *
577 @verbatim
578 ===============================================================================
579 ##### HAL SYSCFG configuration functions #####
580 ===============================================================================
581 [..] This section provides functions allowing to:
582 (+) Start a hardware SRAM2 erase operation
583 (+) Enable/Disable the Internal FLASH Bank Swapping
584 (+) Configure the Voltage reference buffer
585 (+) Enable/Disable the Voltage reference buffer
586 (+) Enable/Disable the I/O analog switch voltage booster
587
588 @endverbatim
589 * @{
590 */
591
592 /**
593 * @brief Start a hardware SRAM2 erase operation.
594 * @note As long as SRAM2 is not erased the SRAM2ER bit will be set.
595 * This bit is automatically reset at the end of the SRAM2 erase operation.
596 * @retval None
597 */
HAL_SYSCFG_SRAM2Erase(void)598 void HAL_SYSCFG_SRAM2Erase(void)
599 {
600 /* unlock the write protection of the SRAM2ER bit */
601 SYSCFG->SKR = 0xCA;
602 SYSCFG->SKR = 0x53;
603 /* Starts a hardware SRAM2 erase operation*/
604 *(__IO uint32_t *) SCSR_SRAM2ER_BB = 0x00000001UL;
605 }
606
607 /**
608 * @brief Enable the Internal FLASH Bank Swapping.
609 *
610 * @note This function can be used only for STM32L4xx devices.
611 *
612 * @note Flash Bank2 mapped at 0x08000000 (and aliased @0x00000000)
613 * and Flash Bank1 mapped at 0x08100000 (and aliased at 0x00100000)
614 *
615 * @retval None
616 */
HAL_SYSCFG_EnableMemorySwappingBank(void)617 void HAL_SYSCFG_EnableMemorySwappingBank(void)
618 {
619 *(__IO uint32_t *)FB_MODE_BB = 0x00000001UL;
620 }
621
622 /**
623 * @brief Disable the Internal FLASH Bank Swapping.
624 *
625 * @note This function can be used only for STM32L4xx devices.
626 *
627 * @note The default state : Flash Bank1 mapped at 0x08000000 (and aliased @0x0000 0000)
628 * and Flash Bank2 mapped at 0x08100000 (and aliased at 0x00100000)
629 *
630 * @retval None
631 */
HAL_SYSCFG_DisableMemorySwappingBank(void)632 void HAL_SYSCFG_DisableMemorySwappingBank(void)
633 {
634
635 *(__IO uint32_t *)FB_MODE_BB = 0x00000000UL;
636 }
637
638 #if defined(VREFBUF)
639 /**
640 * @brief Configure the internal voltage reference buffer voltage scale.
641 * @param VoltageScaling specifies the output voltage to achieve
642 * This parameter can be one of the following values:
643 * @arg SYSCFG_VREFBUF_VOLTAGE_SCALE0: VREF_OUT1 around 2.048 V.
644 * This requires VDDA equal to or higher than 2.4 V.
645 * @arg SYSCFG_VREFBUF_VOLTAGE_SCALE1: VREF_OUT2 around 2.5 V.
646 * This requires VDDA equal to or higher than 2.8 V.
647 * @retval None
648 */
HAL_SYSCFG_VREFBUF_VoltageScalingConfig(uint32_t VoltageScaling)649 void HAL_SYSCFG_VREFBUF_VoltageScalingConfig(uint32_t VoltageScaling)
650 {
651 /* Check the parameters */
652 assert_param(IS_SYSCFG_VREFBUF_VOLTAGE_SCALE(VoltageScaling));
653
654 MODIFY_REG(VREFBUF->CSR, VREFBUF_CSR_VRS, VoltageScaling);
655 }
656
657 /**
658 * @brief Configure the internal voltage reference buffer high impedance mode.
659 * @param Mode specifies the high impedance mode
660 * This parameter can be one of the following values:
661 * @arg SYSCFG_VREFBUF_HIGH_IMPEDANCE_DISABLE: VREF+ pin is internally connect to VREFINT output.
662 * @arg SYSCFG_VREFBUF_HIGH_IMPEDANCE_ENABLE: VREF+ pin is high impedance.
663 * @retval None
664 */
HAL_SYSCFG_VREFBUF_HighImpedanceConfig(uint32_t Mode)665 void HAL_SYSCFG_VREFBUF_HighImpedanceConfig(uint32_t Mode)
666 {
667 /* Check the parameters */
668 assert_param(IS_SYSCFG_VREFBUF_HIGH_IMPEDANCE(Mode));
669
670 MODIFY_REG(VREFBUF->CSR, VREFBUF_CSR_HIZ, Mode);
671 }
672
673 /**
674 * @brief Tune the Internal Voltage Reference buffer (VREFBUF).
675 * @retval None
676 */
HAL_SYSCFG_VREFBUF_TrimmingConfig(uint32_t TrimmingValue)677 void HAL_SYSCFG_VREFBUF_TrimmingConfig(uint32_t TrimmingValue)
678 {
679 /* Check the parameters */
680 assert_param(IS_SYSCFG_VREFBUF_TRIMMING(TrimmingValue));
681
682 MODIFY_REG(VREFBUF->CCR, VREFBUF_CCR_TRIM, TrimmingValue);
683 }
684
685 /**
686 * @brief Enable the Internal Voltage Reference buffer (VREFBUF).
687 * @retval HAL_OK/HAL_TIMEOUT
688 */
HAL_SYSCFG_EnableVREFBUF(void)689 HAL_StatusTypeDef HAL_SYSCFG_EnableVREFBUF(void)
690 {
691 uint32_t tickstart;
692
693 SET_BIT(VREFBUF->CSR, VREFBUF_CSR_ENVR);
694
695 /* Get Start Tick*/
696 tickstart = HAL_GetTick();
697
698 /* Wait for VRR bit */
699 while(READ_BIT(VREFBUF->CSR, VREFBUF_CSR_VRR) == 0U)
700 {
701 if((HAL_GetTick() - tickstart) > VREFBUF_TIMEOUT_VALUE)
702 {
703 return HAL_TIMEOUT;
704 }
705 }
706
707 return HAL_OK;
708 }
709
710 /**
711 * @brief Disable the Internal Voltage Reference buffer (VREFBUF).
712 *
713 * @retval None
714 */
HAL_SYSCFG_DisableVREFBUF(void)715 void HAL_SYSCFG_DisableVREFBUF(void)
716 {
717 CLEAR_BIT(VREFBUF->CSR, VREFBUF_CSR_ENVR);
718 }
719 #endif /* VREFBUF */
720
721 /**
722 * @brief Enable the I/O analog switch voltage booster
723 *
724 * @retval None
725 */
HAL_SYSCFG_EnableIOAnalogSwitchBooster(void)726 void HAL_SYSCFG_EnableIOAnalogSwitchBooster(void)
727 {
728 SET_BIT(SYSCFG->CFGR1, SYSCFG_CFGR1_BOOSTEN);
729 }
730
731 /**
732 * @brief Disable the I/O analog switch voltage booster
733 *
734 * @retval None
735 */
HAL_SYSCFG_DisableIOAnalogSwitchBooster(void)736 void HAL_SYSCFG_DisableIOAnalogSwitchBooster(void)
737 {
738 CLEAR_BIT(SYSCFG->CFGR1, SYSCFG_CFGR1_BOOSTEN);
739 }
740
741 /**
742 * @}
743 */
744
745 /**
746 * @}
747 */
748
749 #endif /* HAL_MODULE_ENABLED */
750 /**
751 * @}
752 */
753
754 /**
755 * @}
756 */
757
758 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
759