tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L1/stm32l1xx_hal.c

   1 /**
   2   ******************************************************************************
   3   * @file    stm32l1xx_hal.c
   4   * @author  MCD Application Team
   5   * @version V1.0.0
   6   * @date    5-September-2014
   7   * @brief   HAL module driver.
   8   *          This is the common part of the HAL initialization
   9   *
  10   @verbatim
  11   ==============================================================================
  12                      ##### How to use this driver #####
  13   ==============================================================================
  14     [..]
  15     The common HAL driver contains a set of generic and common APIs that can be
  16     used by the PPP peripheral drivers and the user to start using the HAL.
  17     [..]
  18     The HAL contains two APIs' categories:
  19          (+) Common HAL APIs
  20          (+) Services HAL APIs
  21
  22   @endverbatim
  23   ******************************************************************************
  24   * @attention
  25   *
  26   * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
  27   *
  28   * Redistribution and use in source and binary forms, with or without modification,
  29   * are permitted provided that the following conditions are met:
  30   *   1. Redistributions of source code must retain the above copyright notice,
  31   *      this list of conditions and the following disclaimer.
  32   *   2. Redistributions in binary form must reproduce the above copyright notice,
  33   *      this list of conditions and the following disclaimer in the documentation
  34   *      and/or other materials provided with the distribution.
  35   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  36   *      may be used to endorse or promote products derived from this software
  37   *      without specific prior written permission.
  38   *
  39   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  40   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  42   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  43   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  44   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  45   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  46   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  47   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  48   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  49   *
  50   ******************************************************************************
  51   */
  52
  53 /* Includes ------------------------------------------------------------------*/
  54 #include "stm32l1xx_hal.h"
  55
  56 /** @addtogroup STM32L1xx_HAL_Driver
  57   * @{
  58   */
  59
  60 /** @defgroup HAL HAL
  61   * @brief HAL module driver.
  62   * @{
  63   */
  64
  65 #ifdef HAL_MODULE_ENABLED
  66
  67 /* Private typedef -----------------------------------------------------------*/
  68 /* Private define ------------------------------------------------------------*/
  69
  70 /** @defgroup HAL_Private_Defines HAL Private Defines
  71   * @{
  72   */
  73
  74 /**
  75  * @brief STM32L1xx HAL Driver version number V1.0.0
  76    */
  77 #define __STM32L1xx_HAL_VERSION_MAIN   (0x01) /*!< [31:24] main version */
  78 #define __STM32L1xx_HAL_VERSION_SUB1   (0x00) /*!< [23:16] sub1 version */
  79 #define __STM32L1xx_HAL_VERSION_SUB2   (0x00) /*!< [15:8]  sub2 version */
  80 #define __STM32L1xx_HAL_VERSION_RC     (0x00) /*!< [7:0]  release candidate */
  81 #define __STM32L1xx_HAL_VERSION         ((__STM32L1xx_HAL_VERSION_MAIN << 24)\
  82                                         |(__STM32L1xx_HAL_VERSION_SUB1 << 16)\
  83                                         |(__STM32L1xx_HAL_VERSION_SUB2 << 8 )\
  84                                         |(__STM32L1xx_HAL_VERSION_RC))
  85
  86 #define IDCODE_DEVID_MASK    ((uint32_t)0x00000FFF)
  87
  88 /**
  89   * @}
  90   */
  91
  92 /* Private macro -------------------------------------------------------------*/
  93 /* Private variables ---------------------------------------------------------*/
  94
  95 /** @defgroup HAL_Private_Variables HAL Private Variables
  96   * @{
  97   */
  98
  99 static __IO uint32_t uwTick;
 100
 101 /**
 102   * @}
 103   */
 104
 105 /* Private function prototypes -----------------------------------------------*/
 106 /* Private functions ---------------------------------------------------------*/
 107
 108 /** @defgroup HAL_Exported_Functions HAL Exported Functions
 109   * @{
 110   */
 111
 112 /** @defgroup HAL_Exported_Functions_Group1 Initialization and de-initialization Functions
 113  *  @brief    Initialization and de-initialization functions
 114  *
 115 @verbatim
 116  ===============================================================================
 117               ##### Initialization and de-initialization functions #####
 118  ===============================================================================
 119    [..]  This section provides functions allowing to:
 120       (+) Initializes the Flash interface, the NVIC allocation and initial clock
 121           configuration. It initializes the source of time base also when timeout
 122           is needed and the backup domain when enabled.
 123       (+) de-Initializes common part of the HAL.
 124       (+) Configure The time base source to have 1ms time base with a dedicated
 125           Tick interrupt priority.
 126         (++) Systick timer is used by default as source of time base, but user
 127              can eventually implement his proper time base source (a general purpose
 128              timer for example or other time source), keeping in mind that Time base
 129              duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
 130              handled in milliseconds basis.
 131         (++) Time base configuration function (HAL_InitTick ()) is called automatically
 132              at the beginning of the program after reset by HAL_Init() or at any time
 133              when clock is configured, by HAL_RCC_ClockConfig().
 134         (++) Source of time base is configured  to generate interrupts at regular
 135              time intervals. Care must be taken if HAL_Delay() is called from a
 136              peripheral ISR process, the Tick interrupt line must have higher priority
 137             (numerically lower) than the peripheral interrupt. Otherwise the caller
 138             ISR process will be blocked.
 139        (++) functions affecting time base configurations are declared as __Weak
 140              to make  override possible  in case of other  implementations in user file.
 141
 142 @endverbatim
 143   * @{
 144   */
 145
 146 /**
 147   * @brief This function configures the Flash prefetch,
 148   *        Configures time base source, NVIC and Low level hardware
 149   * @note This function is called at the beginning of program after reset and before
 150   *       the clock configuration
 151   * @note The time base configuration is based on MSI clock when exiting from Reset.
 152   *       Once done, time base tick start incrementing.
 153   *        In the default implementation,Systick is used as source of time base.
 154   *        the tick variable is incremented each 1ms in its ISR.
 155   * @retval HAL status
 156   */
 157 HAL_StatusTypeDef HAL_Init(void)
 158 {
 159   /* Configure Flash prefetch */
 160 #if (PREFETCH_ENABLE != 0)
 161   __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
 162 #endif /* PREFETCH_ENABLE */
 163
 164   /* Set Interrupt Group Priority */
 165   HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
 166
 167   /* Use systick as time base source and configure 1ms tick (default clock after Reset is MSI) */
 168   HAL_InitTick(TICK_INT_PRIORITY);
 169
 170   /* Init the low level hardware */
 171   HAL_MspInit();
 172
 173   /* Return function status */
 174   return HAL_OK;
 175 }
 176
 177 /**
 178   * @brief This function de-Initializes common part of the HAL and stops the source
 179   *        of time base.
 180   * @note This function is optional.
 181   * @retval HAL status
 182   */
 183 HAL_StatusTypeDef HAL_DeInit(void)
 184 {
 185   /* Reset of all peripherals */
 186   __APB1_FORCE_RESET();
 187   __APB1_RELEASE_RESET();
 188
 189   __APB2_FORCE_RESET();
 190   __APB2_RELEASE_RESET();
 191
 192   __AHB_FORCE_RESET();
 193   __AHB_RELEASE_RESET();
 194
 195   /* De-Init the low level hardware */
 196   HAL_MspDeInit();
 197
 198   /* Return function status */
 199   return HAL_OK;
 200 }
 201
 202 /**
 203   * @brief  Initializes the MSP.
 204   * @retval None
 205   */
 206 __weak void HAL_MspInit(void)
 207 {
 208   /* NOTE : This function Should not be modified, when the callback is needed,
 209             the HAL_MspInit could be implemented in the user file
 210    */
 211 }
 212
 213 /**
 214   * @brief  DeInitializes the MSP.
 215   * @retval None
 216   */
 217 __weak void HAL_MspDeInit(void)
 218 {
 219   /* NOTE : This function Should not be modified, when the callback is needed,
 220             the HAL_MspDeInit could be implemented in the user file
 221    */
 222 }
 223
 224 /**
 225   * @brief This function configures the source of the time base.
 226   *        The time source is configured  to have 1ms time base with a dedicated
 227   *        Tick interrupt priority.
 228   * @note This function is called  automatically at the beginning of program after
 229   *       reset by HAL_Init() or at any time when clock is reconfigured  by HAL_RCC_ClockConfig().
 230   * @note In the default implementation, SysTick timer is the source of time base.
 231   *       It is used to generate interrupts at regular time intervals.
 232   *       Care must be taken if HAL_Delay() is called from a peripheral ISR process,
 233   *       The the SysTick interrupt must have higher priority (numerically lower)
 234   *       than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
 235   *       The function is declared as __Weak  to be overwritten  in case of other
 236   *       implementation  in user file.
 237   * @param TickPriority: Tick interrupt priority.
 238   * @retval HAL status
 239   */
 240 __weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
 241 {
 242   /*Configure the SysTick to have interrupt in 1ms time basis*/
 243   HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
 244
 245   /*Configure the SysTick IRQ priority */
 246   HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority ,0);
 247
 248    /* Return function status */
 249   return HAL_OK;
 250 }
 251
 252 /**
 253   * @}
 254   */
 255
 256 /** @defgroup HAL_Exported_Functions_Group2 HAL Control functions
 257  *  @brief    HAL Control functions
 258  *
 259 @verbatim
 260  ===============================================================================
 261                       ##### HAL Control functions #####
 262  ===============================================================================
 263     [..]  This section provides functions allowing to:
 264       (+) Provide a tick value in millisecond
 265       (+) Provide a blocking delay in millisecond
 266       (+) Suspend the time base source interrupt
 267       (+) Resume the time base source interrupt
 268       (+) Get the HAL API driver version
 269       (+) Get the device identifier
 270       (+) Get the device revision identifier
 271       (+) Enable/Disable Debug module during Sleep mode
 272       (+) Enable/Disable Debug module during STOP mode
 273       (+) Enable/Disable Debug module during STANDBY mode
 274
 275 @endverbatim
 276   * @{
 277   */
 278
 279 /**
 280   * @brief This function is called to increment  a global variable "uwTick"
 281   *        used as application time base.
 282   * @note In the default implementation, this variable is incremented each 1ms
 283   *       in Systick ISR.
 284  * @note This function is declared as __weak to be overwritten in case of other
 285   *      implementations in user file.
 286   * @retval None
 287   */
 288 __weak void HAL_IncTick(void)
 289 {
 290   uwTick++;
 291 }
 292
 293 /**
 294   * @brief Provides a tick value in millisecond.
 295   * @note This function is declared as __weak to be overwritten in case of other
 296   *       implementations in user file.
 297   * @retval tick value
 298   */
 299 __weak uint32_t HAL_GetTick(void)
 300 {
 301   return uwTick;
 302 }
 303
 304 /**
 305   * @brief This function provides accurate delay (in milliseconds) based
 306   *        on variable incremented.
 307   * @note In the default implementation , SysTick timer is the source of time base.
 308   *       It is used to generate interrupts at regular time intervals where uwTick
 309   *       is incremented.
 310   * @note ThiS function is declared as __weak to be overwritten in case of other
 311   *       implementations in user file.
 312   * @param Delay: specifies the delay time length, in milliseconds.
 313   * @retval None
 314   */
 315 __weak void HAL_Delay(__IO uint32_t Delay)
 316 {
 317   uint32_t tickstart = 0;
 318   tickstart = HAL_GetTick();
 319   while((HAL_GetTick() - tickstart) < Delay)
 320   {
 321   }
 322 }
 323
 324 /**
 325   * @brief Suspend Tick increment.
 326   * @note In the default implementation , SysTick timer is the source of time base. It is
 327   *       used to generate interrupts at regular time intervals. Once HAL_SuspendTick()
 328   *       is called, the the SysTick interrupt will be disabled and so Tick increment
 329   *       is suspended.
 330   * @note This function is declared as __weak to be overwritten in case of other
 331   *       implementations in user file.
 332   * @retval None
 333   */
 334 __weak void HAL_SuspendTick(void)
 335 {
 336   /* Disable SysTick Interrupt */
 337   CLEAR_BIT(SysTick->CTRL,SysTick_CTRL_TICKINT_Msk);
 338 }
 339
 340 /**
 341   * @brief Resume Tick increment.
 342   * @note In the default implementation , SysTick timer is the source of time base. It is
 343   *       used to generate interrupts at regular time intervals. Once HAL_ResumeTick()
 344   *       is called, the the SysTick interrupt will be enabled and so Tick increment
 345   *       is resumed.
 346   * @note This function is declared as __weak to be overwritten in case of other
 347   *       implementations in user file.
 348   * @retval None
 349   */
 350 __weak void HAL_ResumeTick(void)
 351 {
 352   /* Enable SysTick Interrupt */
 353   SET_BIT(SysTick->CTRL,SysTick_CTRL_TICKINT_Msk);
 354 }
 355
 356 /**
 357   * @brief Returns the HAL revision
 358   * @retval version: 0xXYZR (8bits for each decimal, R for RC)
 359   */
 360 uint32_t HAL_GetHalVersion(void)
 361 {
 362  return __STM32L1xx_HAL_VERSION;
 363 }
 364
 365 /**
 366   * @brief Returns the device revision identifier.
 367   * @retval Device revision identifier
 368   */
 369 uint32_t HAL_GetREVID(void)
 370 {
 371   return((DBGMCU->IDCODE) >> 16);
 372 }
 373
 374 /**
 375   * @brief  Returns the device identifier.
 376   * @retval Device identifier
 377   */
 378 uint32_t HAL_GetDEVID(void)
 379 {
 380    return((DBGMCU->IDCODE) & IDCODE_DEVID_MASK);
 381 }
 382
 383 /**
 384   * @brief  Enable the Debug Module during SLEEP mode
 385   * @retval None
 386   */
 387 void HAL_EnableDBGSleepMode(void)
 388 {
 389   SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
 390 }
 391
 392 /**
 393   * @brief  Disable the Debug Module during SLEEP mode
 394   * @retval None
 395   */
 396 void HAL_DisableDBGSleepMode(void)
 397 {
 398   CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
 399 }
 400
 401 /**
 402   * @brief  Enable the Debug Module during STOP mode
 403   * @retval None
 404   */
 405 void HAL_EnableDBGStopMode(void)
 406 {
 407   SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
 408 }
 409
 410 /**
 411   * @brief  Disable the Debug Module during STOP mode
 412   * @retval None
 413   */
 414 void HAL_DisableDBGStopMode(void)
 415 {
 416   CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
 417 }
 418
 419 /**
 420   * @brief  Enable the Debug Module during STANDBY mode
 421   * @retval None
 422   */
 423 void HAL_EnableDBGStandbyMode(void)
 424 {
 425   SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
 426 }
 427
 428 /**
 429   * @brief  Disable the Debug Module during STANDBY mode
 430   * @retval None
 431   */
 432 void HAL_DisableDBGStandbyMode(void)
 433 {
 434   CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
 435 }
 436
 437 /**
 438   * @}
 439   */
 440
 441 /**
 442   * @}
 443   */
 444
 445 #endif /* HAL_MODULE_ENABLED */
 446 /**
 447   * @}
 448   */
 449
 450 /**
 451   * @}
 452   */
 453
 454 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/