lib/main/STM32G4/Drivers/STM32G4xx_HAL_Driver/Src/stm32g4xx_hal.c

   1 /**
   2   ******************************************************************************
   3   * @file    stm32g4xx_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>&copy; Copyright (c) 2018 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 "stm32g4xx_hal.h"
  37
  38 /** @addtogroup STM32G4xx_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 STM32G4xx HAL Driver version number $VERSION$
  53   */
  54 #define __STM32G4xx_HAL_VERSION_MAIN   (0x01U) /*!< [31:24] main version */
  55 #define __STM32G4xx_HAL_VERSION_SUB1   (0x00U) /*!< [23:16] sub1 version */
  56 #define __STM32G4xx_HAL_VERSION_SUB2   (0x00U) /*!< [15:8]  sub2 version */
  57 #define __STM32G4xx_HAL_VERSION_RC     (0x00U) /*!< [7:0]  release candidate */
  58 #define __STM32G4xx_HAL_VERSION         ((__STM32G4xx_HAL_VERSION_MAIN << 24U)\
  59                                          |(__STM32G4xx_HAL_VERSION_SUB1 << 16U)\
  60                                          |(__STM32G4xx_HAL_VERSION_SUB2 << 8U )\
  61                                          |(__STM32G4xx_HAL_VERSION_RC))
  62
  63 #if defined(VREFBUF)
  64 #define VREFBUF_TIMEOUT_VALUE     10U   /* 10 ms */
  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       ((uint8_t)0x8)
  73 #define FB_MODE_BB              (PERIPH_BB_BASE + (MEMRMP_OFFSET * 32) + (FB_MODE_BitNumber * 4))
  74
  75 /* --- GPC Register ---*/
  76 /* Alias word address of CCMER bit */
  77 #define SCSR_OFFSET             (SYSCFG_OFFSET + 0x18)
  78 #define CCMER_BitNumber         ((uint8_t)0x0)
  79 #define SCSR_CCMER_BB           (PERIPH_BB_BASE + (SCSR_OFFSET * 32) + (CCMER_BitNumber * 4))
  80
  81 /* Private macro -------------------------------------------------------------*/
  82 /* Exported variables ---------------------------------------------------------*/
  83 /** @defgroup HAL_Exported_Variables HAL Exported Variables
  84   * @{
  85   */
  86 __IO uint32_t uwTick;
  87 uint32_t uwTickPrio = (1UL << __NVIC_PRIO_BITS); /* Invalid PRIO */
  88 uint32_t uwTickFreq = HAL_TICK_FREQ_DEFAULT;  /* 1KHz */
  89 /**
  90   * @}
  91   */
  92
  93 /* Private function prototypes -----------------------------------------------*/
  94 /* Exported functions --------------------------------------------------------*/
  95
  96 /** @defgroup HAL_Exported_Functions HAL Exported Functions
  97   * @{
  98   */
  99
 100 /** @defgroup HAL_Exported_Functions_Group1 Initialization and de-initialization Functions
 101   *  @brief    HAL Initialization and de-initialization functions
 102   *
 103 @verbatim
 104  ===============================================================================
 105               ##### Initialization and Configuration functions #####
 106  ===============================================================================
 107     [..]  This section provides functions allowing to:
 108       (+) Initialize the Flash interface the NVIC allocation and initial time base
 109           clock configuration.
 110       (+) De-Initialize common part of the HAL.
 111       (+) Configure the time base source to have 1ms time base with a dedicated
 112           Tick interrupt priority.
 113         (++) SysTick timer is used by default as source of time base, but user
 114              can eventually implement his proper time base source (a general purpose
 115              timer for example or other time source), keeping in mind that Time base
 116              duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
 117              handled in milliseconds basis.
 118         (++) Time base configuration function (HAL_InitTick ()) is called automatically
 119              at the beginning of the program after reset by HAL_Init() or at any time
 120              when clock is configured, by HAL_RCC_ClockConfig().
 121         (++) Source of time base is configured  to generate interrupts at regular
 122              time intervals. Care must be taken if HAL_Delay() is called from a
 123              peripheral ISR process, the Tick interrupt line must have higher priority
 124             (numerically lower) than the peripheral interrupt. Otherwise the caller
 125             ISR process will be blocked.
 126        (++) functions affecting time base configurations are declared as __weak
 127              to make  override possible  in case of other  implementations in user file.
 128 @endverbatim
 129   * @{
 130   */
 131
 132 /**
 133   * @brief  This function is used to configure the Flash prefetch, the Instruction and Data caches,
 134   *         the time base source, NVIC and any required global low level hardware
 135   *         by calling the HAL_MspInit() callback function to be optionally defined in user file
 136   *         stm32g4xx_hal_msp.c.
 137   *
 138   * @note   HAL_Init() function is called at the beginning of program after reset and before
 139   *         the clock configuration.
 140   *
 141   * @note   In the default implementation the System Timer (Systick) is used as source of time base.
 142   *         The Systick configuration is based on HSI clock, as HSI is the clock
 143   *         used after a system Reset and the NVIC configuration is set to Priority group 4.
 144   *         Once done, time base tick starts incrementing: the tick variable counter is incremented
 145   *         each 1ms in the SysTick_Handler() interrupt handler.
 146   *
 147   * @retval HAL status
 148   */
 149 HAL_StatusTypeDef HAL_Init(void)
 150 {
 151   HAL_StatusTypeDef  status = HAL_OK;
 152   /* Configure Flash prefetch, Instruction cache, Data cache */
 153   /* Default configuration at reset is:                      */
 154   /* - Prefetch disabled                                     */
 155   /* - Instruction cache enabled                             */
 156   /* - Data cache enabled                                    */
 157 #if (INSTRUCTION_CACHE_ENABLE == 0U)
 158   __HAL_FLASH_INSTRUCTION_CACHE_DISABLE();
 159 #endif /* INSTRUCTION_CACHE_ENABLE */
 160
 161 #if (DATA_CACHE_ENABLE == 0U)
 162   __HAL_FLASH_DATA_CACHE_DISABLE();
 163 #endif /* DATA_CACHE_ENABLE */
 164
 165 #if (PREFETCH_ENABLE != 0U)
 166   __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
 167 #endif /* PREFETCH_ENABLE */
 168
 169   /* Set Interrupt Group Priority */
 170   HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
 171
 172   /* Use SysTick as time base source and configure 1ms tick (default clock after Reset is HSI) */
 173   if (HAL_InitTick(TICK_INT_PRIORITY) != HAL_OK)
 174   {
 175     status = HAL_ERROR;
 176   }
 177   else
 178   {
 179     /* Init the low level hardware */
 180     HAL_MspInit();
 181   }
 182
 183   /* Return function status */
 184   return status;
 185
 186 }
 187
 188 /**
 189   * @brief  This function de-initializes common part of the HAL and stops the source of time base.
 190   * @note   This function is optional.
 191   * @retval HAL status
 192   */
 193 HAL_StatusTypeDef HAL_DeInit(void)
 194 {
 195   /* Reset of all peripherals */
 196   __HAL_RCC_APB1_FORCE_RESET();
 197   __HAL_RCC_APB1_RELEASE_RESET();
 198
 199   __HAL_RCC_APB2_FORCE_RESET();
 200   __HAL_RCC_APB2_RELEASE_RESET();
 201
 202   __HAL_RCC_AHB1_FORCE_RESET();
 203   __HAL_RCC_AHB1_RELEASE_RESET();
 204
 205   __HAL_RCC_AHB2_FORCE_RESET();
 206   __HAL_RCC_AHB2_RELEASE_RESET();
 207
 208   __HAL_RCC_AHB3_FORCE_RESET();
 209   __HAL_RCC_AHB3_RELEASE_RESET();
 210
 211   /* De-Init the low level hardware */
 212   HAL_MspDeInit();
 213
 214   /* Return function status */
 215   return HAL_OK;
 216 }
 217
 218 /**
 219   * @brief  Initialize the MSP.
 220   * @retval None
 221   */
 222 __weak void HAL_MspInit(void)
 223 {
 224   /* NOTE : This function should not be modified, when the callback is needed,
 225             the HAL_MspInit could be implemented in the user file
 226    */
 227 }
 228
 229 /**
 230   * @brief  DeInitializes the MSP.
 231   * @retval None
 232   */
 233 __weak void HAL_MspDeInit(void)
 234 {
 235   /* NOTE : This function should not be modified, when the callback is needed,
 236             the HAL_MspDeInit could be implemented in the user file
 237    */
 238 }
 239
 240 /**
 241   * @brief This function configures the source of the time base:
 242   *        The time source is configured to have 1ms time base with a dedicated
 243   *        Tick interrupt priority.
 244   * @note This function is called  automatically at the beginning of program after
 245   *       reset by HAL_Init() or at any time when clock is reconfigured  by HAL_RCC_ClockConfig().
 246   * @note In the default implementation, SysTick timer is the source of time base.
 247   *       It is used to generate interrupts at regular time intervals.
 248   *       Care must be taken if HAL_Delay() is called from a peripheral ISR process,
 249   *       The SysTick interrupt must have higher priority (numerically lower)
 250   *       than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
 251   *       The function is declared as __weak  to be overwritten  in case of other
 252   *       implementation  in user file.
 253   * @param TickPriority: Tick interrupt priority.
 254   * @retval HAL status
 255   */
 256 __weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
 257 {
 258   HAL_StatusTypeDef  status = HAL_OK;
 259
 260   if (uwTickFreq != 0U)
 261   {
 262     /* Configure the SysTick to have interrupt in 1ms time basis*/
 263     if (HAL_SYSTICK_Config(SystemCoreClock / (1000U / uwTickFreq)) == 0U)
 264     {
 265       /* Configure the SysTick IRQ priority */
 266       if (TickPriority < (1UL << __NVIC_PRIO_BITS))
 267       {
 268         HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority, 0U);
 269         uwTickPrio = TickPriority;
 270       }
 271       else
 272       {
 273         status = HAL_ERROR;
 274       }
 275     }
 276     else
 277     {
 278       status = HAL_ERROR;
 279     }
 280   }
 281   else
 282   {
 283     status = HAL_ERROR;
 284   }
 285
 286   /* Return function status */
 287   return status;
 288 }
 289
 290 /**
 291   * @}
 292   */
 293
 294 /** @defgroup HAL_Exported_Functions_Group2 HAL Control functions
 295   *  @brief    HAL Control functions
 296   *
 297 @verbatim
 298  ===============================================================================
 299                       ##### HAL Control functions #####
 300  ===============================================================================
 301     [..]  This section provides functions allowing to:
 302       (+) Provide a tick value in millisecond
 303       (+) Provide a blocking delay in millisecond
 304       (+) Suspend the time base source interrupt
 305       (+) Resume the time base source interrupt
 306       (+) Get the HAL API driver version
 307       (+) Get the device identifier
 308       (+) Get the device revision identifier
 309
 310 @endverbatim
 311   * @{
 312   */
 313
 314 /**
 315   * @brief This function is called to increment a global variable "uwTick"
 316   *        used as application time base.
 317   * @note In the default implementation, this variable is incremented each 1ms
 318   *       in SysTick ISR.
 319   * @note This function is declared as __weak to be overwritten in case of other
 320   *      implementations in user file.
 321   * @retval None
 322   */
 323 __weak void HAL_IncTick(void)
 324 {
 325   uwTick += uwTickFreq;
 326 }
 327
 328 /**
 329   * @brief Provides a tick value in millisecond.
 330   * @note This function is declared as __weak to be overwritten in case of other
 331   *       implementations in user file.
 332   * @retval tick value
 333   */
 334 __weak uint32_t HAL_GetTick(void)
 335 {
 336   return uwTick;
 337 }
 338
 339 /**
 340   * @brief This function returns a tick priority.
 341   * @retval tick priority
 342   */
 343 uint32_t HAL_GetTickPrio(void)
 344 {
 345   return uwTickPrio;
 346 }
 347
 348 /**
 349   * @brief Set new tick Freq.
 350   * @retval Status
 351   */
 352 HAL_StatusTypeDef HAL_SetTickFreq(uint32_t Freq)
 353 {
 354   HAL_StatusTypeDef status  = HAL_OK;
 355   assert_param(IS_TICKFREQ(Freq));
 356
 357   if (uwTickFreq != Freq)
 358   {
 359     uwTickFreq = Freq;
 360
 361     /* Apply the new tick Freq  */
 362     status = HAL_InitTick(uwTickPrio);
 363   }
 364
 365   return status;
 366 }
 367
 368 /**
 369   * @brief Returns tick frequency.
 370   * @retval tick period in Hz
 371   */
 372 uint32_t HAL_GetTickFreq(void)
 373 {
 374   return uwTickFreq;
 375 }
 376
 377 /**
 378   * @brief This function provides minimum delay (in milliseconds) based
 379   *        on variable incremented.
 380   * @note In the default implementation , SysTick timer is the source of time base.
 381   *       It is used to generate interrupts at regular time intervals where uwTick
 382   *       is incremented.
 383   * @note This function is declared as __weak to be overwritten in case of other
 384   *       implementations in user file.
 385   * @param Delay specifies the delay time length, in milliseconds.
 386   * @retval None
 387   */
 388 __weak void HAL_Delay(uint32_t Delay)
 389 {
 390   uint32_t tickstart = HAL_GetTick();
 391   uint32_t wait = Delay;
 392
 393   /* Add a freq to guarantee minimum wait */
 394   if (wait < HAL_MAX_DELAY)
 395   {
 396     wait += (uint32_t)(uwTickFreq);
 397   }
 398
 399   while ((HAL_GetTick() - tickstart) < wait)
 400   {
 401   }
 402 }
 403
 404 /**
 405   * @brief Suspends Tick increment.
 406   * @note In the default implementation , SysTick timer is the source of time base. It is
 407   *       used to generate interrupts at regular time intervals. Once HAL_SuspendTick()
 408   *       is called, the SysTick interrupt will be disabled and so Tick increment
 409   *       is suspended.
 410   * @note This function is declared as __weak to be overwritten in case of other
 411   *       implementations in user file.
 412   * @retval None
 413   */
 414 __weak void HAL_SuspendTick(void)
 415 {
 416   /* Disable SysTick Interrupt */
 417   CLEAR_BIT(SysTick->CTRL, SysTick_CTRL_TICKINT_Msk);
 418 }
 419
 420 /**
 421   * @brief Resume Tick increment.
 422   * @note In the default implementation , SysTick timer is the source of time base. It is
 423   *       used to generate interrupts at regular time intervals. Once HAL_ResumeTick()
 424   *       is called, the SysTick interrupt will be enabled and so Tick increment
 425   *       is resumed.
 426   * @note This function is declared as __weak to be overwritten in case of other
 427   *       implementations in user file.
 428   * @retval None
 429   */
 430 __weak void HAL_ResumeTick(void)
 431 {
 432   /* Enable SysTick Interrupt */
 433   SET_BIT(SysTick->CTRL, SysTick_CTRL_TICKINT_Msk);
 434 }
 435
 436 /**
 437   * @brief  Returns the HAL revision.
 438   * @retval version : 0xXYZR (8bits for each decimal, R for RC)
 439   */
 440 uint32_t HAL_GetHalVersion(void)
 441 {
 442   return __STM32G4xx_HAL_VERSION;
 443 }
 444
 445 /**
 446   * @brief  Returns the device revision identifier.
 447   * @retval Device revision identifier
 448   */
 449 uint32_t HAL_GetREVID(void)
 450 {
 451   return ((DBGMCU->IDCODE & DBGMCU_IDCODE_REV_ID) >> 16U);
 452 }
 453
 454 /**
 455   * @brief  Returns the device identifier.
 456   * @retval Device identifier
 457   */
 458 uint32_t HAL_GetDEVID(void)
 459 {
 460   return (DBGMCU->IDCODE & DBGMCU_IDCODE_DEV_ID);
 461 }
 462
 463 /**
 464   * @}
 465   */
 466
 467 /** @defgroup HAL_Exported_Functions_Group3 HAL Debug functions
 468   *  @brief    HAL Debug functions
 469   *
 470 @verbatim
 471  ===============================================================================
 472                       ##### HAL Debug functions #####
 473  ===============================================================================
 474     [..]  This section provides functions allowing to:
 475       (+) Enable/Disable Debug module during SLEEP mode
 476       (+) Enable/Disable Debug module during STOP0/STOP1/STOP2 modes
 477       (+) Enable/Disable Debug module during STANDBY mode
 478
 479 @endverbatim
 480   * @{
 481   */
 482
 483 /**
 484   * @brief  Enable the Debug Module during SLEEP mode.
 485   * @retval None
 486   */
 487 void HAL_DBGMCU_EnableDBGSleepMode(void)
 488 {
 489   SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
 490 }
 491
 492 /**
 493   * @brief  Disable the Debug Module during SLEEP mode.
 494   * @retval None
 495   */
 496 void HAL_DBGMCU_DisableDBGSleepMode(void)
 497 {
 498   CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
 499 }
 500
 501 /**
 502   * @brief  Enable the Debug Module during STOP0/STOP1/STOP2 modes.
 503   * @retval None
 504   */
 505 void HAL_DBGMCU_EnableDBGStopMode(void)
 506 {
 507   SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
 508 }
 509
 510 /**
 511   * @brief  Disable the Debug Module during STOP0/STOP1/STOP2 modes.
 512   * @retval None
 513   */
 514 void HAL_DBGMCU_DisableDBGStopMode(void)
 515 {
 516   CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
 517 }
 518
 519 /**
 520   * @brief  Enable the Debug Module during STANDBY mode.
 521   * @retval None
 522   */
 523 void HAL_DBGMCU_EnableDBGStandbyMode(void)
 524 {
 525   SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
 526 }
 527
 528 /**
 529   * @brief  Disable the Debug Module during STANDBY mode.
 530   * @retval None
 531   */
 532 void HAL_DBGMCU_DisableDBGStandbyMode(void)
 533 {
 534   CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
 535 }
 536
 537 /**
 538   * @}
 539   */
 540
 541 /** @defgroup HAL_Exported_Functions_Group4 HAL SYSCFG configuration functions
 542   *  @brief    HAL SYSCFG configuration functions
 543   *
 544 @verbatim
 545  ===============================================================================
 546                       ##### HAL SYSCFG configuration functions #####
 547  ===============================================================================
 548     [..]  This section provides functions allowing to:
 549       (+) Start a hardware CCMSRAM erase operation
 550       (+) Enable/Disable the Internal FLASH Bank Swapping
 551       (+) Configure the Voltage reference buffer
 552       (+) Enable/Disable the Voltage reference buffer
 553       (+) Enable/Disable the I/O analog switch voltage booster
 554
 555 @endverbatim
 556   * @{
 557   */
 558
 559 /**
 560   * @brief  Start a hardware CCMSRAM erase operation.
 561   * @note   As long as CCMSRAM is not erased the CCMER bit will be set.
 562   *         This bit is automatically reset at the end of the CCMSRAM erase operation.
 563   * @retval None
 564   */
 565 void HAL_SYSCFG_CCMSRAMErase(void)
 566 {
 567   /* unlock the write protection of the CCMER bit */
 568   SYSCFG->SKR = 0xCA;
 569   SYSCFG->SKR = 0x53;
 570   /* Starts a hardware CCMSRAM erase operation*/
 571   SET_BIT(SYSCFG->SCSR, SYSCFG_SCSR_CCMER);
 572 }
 573
 574 /**
 575   * @brief  Enable the Internal FLASH Bank Swapping.
 576   *
 577   * @note   This function can be used only for STM32G4xx devices.
 578   *
 579   * @note   Flash Bank2 mapped at 0x08000000 (and aliased @0x00000000)
 580   *         and Flash Bank1 mapped at 0x08040000 (and aliased at 0x00040000)
 581   *
 582   * @retval None
 583   */
 584 void HAL_SYSCFG_EnableMemorySwappingBank(void)
 585 {
 586   SET_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_FB_MODE);
 587 }
 588
 589 /**
 590   * @brief  Disable the Internal FLASH Bank Swapping.
 591   *
 592   * @note   This function can be used only for STM32G4xx devices.
 593   *
 594   * @note   The default state : Flash Bank1 mapped at 0x08000000 (and aliased @0x0000 0000)
 595   *         and Flash Bank2 mapped at 0x08040000 (and aliased at 0x00040000)
 596   *
 597   * @retval None
 598   */
 599 void HAL_SYSCFG_DisableMemorySwappingBank(void)
 600 {
 601   CLEAR_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_FB_MODE);
 602 }
 603
 604 #if defined(VREFBUF)
 605 /**
 606   * @brief Configure the internal voltage reference buffer voltage scale.
 607   * @param  VoltageScaling: specifies the output voltage to achieve
 608   *          This parameter can be one of the following values:
 609   *            @arg SYSCFG_VREFBUF_VOLTAGE_SCALE0: VREFBUF_OUT around 2.048 V.
 610   *                                                This requires VDDA equal to or higher than 2.4 V.
 611   *            @arg SYSCFG_VREFBUF_VOLTAGE_SCALE1: VREFBUF_OUT around 2.5 V.
 612   *                                                This requires VDDA equal to or higher than 2.8 V.
 613   *            @arg SYSCFG_VREFBUF_VOLTAGE_SCALE2: VREFBUF_OUT around 2.9 V.
 614   *                                                This requires VDDA equal to or higher than 3.15 V.
 615   * @retval None
 616   */
 617 void HAL_SYSCFG_VREFBUF_VoltageScalingConfig(uint32_t VoltageScaling)
 618 {
 619   /* Check the parameters */
 620   assert_param(IS_SYSCFG_VREFBUF_VOLTAGE_SCALE(VoltageScaling));
 621
 622   MODIFY_REG(VREFBUF->CSR, VREFBUF_CSR_VRS, VoltageScaling);
 623 }
 624
 625 /**
 626   * @brief Configure the internal voltage reference buffer high impedance mode.
 627   * @param  Mode: specifies the high impedance mode
 628   *          This parameter can be one of the following values:
 629   *            @arg SYSCFG_VREFBUF_HIGH_IMPEDANCE_DISABLE: VREF+ pin is internally connect to VREFINT output.
 630   *            @arg SYSCFG_VREFBUF_HIGH_IMPEDANCE_ENABLE: VREF+ pin is high impedance.
 631   * @retval None
 632   */
 633 void HAL_SYSCFG_VREFBUF_HighImpedanceConfig(uint32_t Mode)
 634 {
 635   /* Check the parameters */
 636   assert_param(IS_SYSCFG_VREFBUF_HIGH_IMPEDANCE(Mode));
 637
 638   MODIFY_REG(VREFBUF->CSR, VREFBUF_CSR_HIZ, Mode);
 639 }
 640
 641 /**
 642   * @brief Tune the Internal Voltage Reference buffer (VREFBUF).
 643   * @param TrimmingValue specifies trimming code for VREFBUF calibration
 644   *        This parameter can be a number between Min_Data = 0x00 and Max_Data = 0x3F
 645   * @retval None
 646   */
 647 void HAL_SYSCFG_VREFBUF_TrimmingConfig(uint32_t TrimmingValue)
 648 {
 649   /* Check the parameters */
 650   assert_param(IS_SYSCFG_VREFBUF_TRIMMING(TrimmingValue));
 651
 652   MODIFY_REG(VREFBUF->CCR, VREFBUF_CCR_TRIM, TrimmingValue);
 653 }
 654
 655 /**
 656   * @brief  Enable the Internal Voltage Reference buffer (VREFBUF).
 657   * @retval HAL_OK/HAL_TIMEOUT
 658   */
 659 HAL_StatusTypeDef HAL_SYSCFG_EnableVREFBUF(void)
 660 {
 661   uint32_t tickstart;
 662
 663   SET_BIT(VREFBUF->CSR, VREFBUF_CSR_ENVR);
 664
 665   /* Get Start Tick*/
 666   tickstart = HAL_GetTick();
 667
 668   /* Wait for VRR bit  */
 669   while (READ_BIT(VREFBUF->CSR, VREFBUF_CSR_VRR) == 0x00U)
 670   {
 671     if ((HAL_GetTick() - tickstart) > VREFBUF_TIMEOUT_VALUE)
 672     {
 673       return HAL_TIMEOUT;
 674     }
 675   }
 676
 677   return HAL_OK;
 678 }
 679
 680 /**
 681   * @brief  Disable the Internal Voltage Reference buffer (VREFBUF).
 682   *
 683   * @retval None
 684   */
 685 void HAL_SYSCFG_DisableVREFBUF(void)
 686 {
 687   CLEAR_BIT(VREFBUF->CSR, VREFBUF_CSR_ENVR);
 688 }
 689 #endif /* VREFBUF */
 690
 691 /**
 692   * @brief  Enable the I/O analog switch voltage booster
 693   *
 694   * @retval None
 695   */
 696 void HAL_SYSCFG_EnableIOSwitchBooster(void)
 697 {
 698   SET_BIT(SYSCFG->CFGR1, SYSCFG_CFGR1_BOOSTEN);
 699 }
 700
 701 /**
 702   * @brief  Disable the I/O analog switch voltage booster
 703   *
 704   * @retval None
 705   */
 706 void HAL_SYSCFG_DisableIOSwitchBooster(void)
 707 {
 708   CLEAR_BIT(SYSCFG->CFGR1, SYSCFG_CFGR1_BOOSTEN);
 709 }
 710
 711 /**
 712   * @brief  Enable the I/O analog switch voltage by VDD
 713   *
 714   * @retval None
 715   */
 716 void HAL_SYSCFG_EnableIOSwitchVDD(void)
 717 {
 718   SET_BIT(SYSCFG->CFGR1, SYSCFG_CFGR1_ANASWVDD);
 719 }
 720
 721 /**
 722   * @brief  Disable the I/O analog switch voltage by VDD
 723   *
 724   * @retval None
 725   */
 726 void HAL_SYSCFG_DisableIOSwitchVDD(void)
 727 {
 728   CLEAR_BIT(SYSCFG->CFGR1, SYSCFG_CFGR1_ANASWVDD);
 729 }
 730
 731
 732 /** @brief  CCMSRAM page write protection enable
 733   * @param Page: This parameter is a long 32bit value and can be a value of @ref SYSCFG_CCMSRAMWRP
 734   * @note   write protection can only be disabled by a system reset
 735   * @retval None
 736   */
 737 void HAL_SYSCFG_CCMSRAM_WriteProtectionEnable(uint32_t Page)
 738 {
 739   assert_param(IS_SYSCFG_CCMSRAMWRP_PAGE(Page));
 740
 741   SET_BIT(SYSCFG->SWPR, (uint32_t)(Page));
 742 }
 743
 744
 745 /**
 746   * @}
 747   */
 748
 749 /**
 750   * @}
 751   */
 752
 753 #endif /* HAL_MODULE_ENABLED */
 754 /**
 755   * @}
 756   */
 757
 758 /**
 759   * @}
 760   */
 761
 762 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/