tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal.c

   1 /**
   2   ******************************************************************************
   3   * @file    stm32f0xx_hal.c
   4   * @author  MCD Application Team
   5   * @version V1.2.0
   6   * @date    11-December-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          (+) HAL Initialization and de-initialization functions
  20          (+) HAL Control functions
  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 "stm32f0xx_hal.h"
  55
  56 /** @addtogroup STM32F0xx_HAL_Driver
  57   * @{
  58   */
  59
  60 /** @defgroup HAL HAL module driver
  61   * @brief HAL module driver.
  62   * @{
  63   */
  64
  65 #ifdef HAL_MODULE_ENABLED
  66
  67 /* Private typedef -----------------------------------------------------------*/
  68 /* Private define ------------------------------------------------------------*/
  69 /** @defgroup HAL_Private Constants
  70   * @{
  71   */
  72 /**
  73   * @brief STM32F0xx HAL Driver version number V1.2.0
  74   */
  75 #define __STM32F0xx_HAL_VERSION_MAIN   (0x01) /*!< [31:24] main version */
  76 #define __STM32F0xx_HAL_VERSION_SUB1   (0x02) /*!< [23:16] sub1 version */
  77 #define __STM32F0xx_HAL_VERSION_SUB2   (0x00) /*!< [15:8]  sub2 version */
  78 #define __STM32F0xx_HAL_VERSION_RC     (0x00) /*!< [7:0]  release candidate */
  79 #define __STM32F0xx_HAL_VERSION         ((__STM32F0xx_HAL_VERSION_MAIN << 24)\
  80                                         |(__STM32F0xx_HAL_VERSION_SUB1 << 16)\
  81                                         |(__STM32F0xx_HAL_VERSION_SUB2 << 8 )\
  82                                         |(__STM32F0xx_HAL_VERSION_RC))
  83
  84 #define IDCODE_DEVID_MASK    ((uint32_t)0x00000FFF)
  85 /**
  86   * @}
  87   */
  88
  89 /* Private macro -------------------------------------------------------------*/
  90 /* Private variables ---------------------------------------------------------*/
  91 /** @defgroup HAL_Private_Variables HAL Private Variables
  92   * @{
  93   */
  94 static __IO uint32_t uwTick;
  95 /**
  96   * @}
  97   */
  98 /* Private function prototypes -----------------------------------------------*/
  99 /* Exported functions ---------------------------------------------------------*/
 100
 101 /** @defgroup HAL_Exported_Functions HAL Exported Functions
 102   * @{
 103   */
 104
 105 /** @defgroup HAL_Exported_Functions_Group1 Initialization and de-initialization Functions
 106   * @brief    Initialization and de-initialization functions
 107   *
 108 @verbatim
 109  ===============================================================================
 110               ##### Initialization and de-initialization functions #####
 111  ===============================================================================
 112    [..]  This section provides functions allowing to:
 113       (+) Initializes the Flash interface, the NVIC allocation and initial clock
 114           configuration. It initializes the source of time base also when timeout
 115           is needed and the backup domain when enabled.
 116       (+) de-Initializes common part of the HAL.
 117       (+) Configure The time base source to have 1ms time base with a dedicated
 118           Tick interrupt priority.
 119         (++) Systick timer is used by default as source of time base, but user
 120              can eventually implement his proper time base source (a general purpose
 121              timer for example or other time source), keeping in mind that Time base
 122              duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
 123              handled in milliseconds basis.
 124         (++) Time base configuration function (HAL_InitTick ()) is called automatically
 125              at the beginning of the program after reset by HAL_Init() or at any time
 126              when clock is configured, by HAL_RCC_ClockConfig().
 127         (++) Source of time base is configured  to generate interrupts at regular
 128              time intervals. Care must be taken if HAL_Delay() is called from a
 129              peripheral ISR process, the Tick interrupt line must have higher priority
 130             (numerically lower) than the peripheral interrupt. Otherwise the caller
 131             ISR process will be blocked.
 132        (++) functions affecting time base configurations are declared as __Weak
 133              to make  override possible  in case of other  implementations in user file.
 134
 135 @endverbatim
 136   * @{
 137   */
 138
 139 /**
 140   * @brief  This function configures the Flash prefetch,
 141   *        Configures time base source, NVIC and Low level hardware
 142   * @note This function is called at the beginning of program after reset and before
 143   *       the clock configuration
 144   * @note The time base configuration is based on HSI clock when exiting from Reset.
 145   *       Once done, time base tick start incrementing.
 146   *       In the default implementation,Systick is used as source of time base.
 147   *       The tick variable is incremented each 1ms in its ISR.
 148   * @retval HAL status
 149   */
 150 HAL_StatusTypeDef HAL_Init(void)
 151 {
 152   /* Configure Flash prefetch */
 153 #if (PREFETCH_ENABLE != 0)
 154   __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
 155 #endif /* PREFETCH_ENABLE */
 156
 157   /* Use systick as time base source and configure 1ms tick (default clock after Reset is HSI) */
 158
 159   HAL_InitTick(TICK_INT_PRIORITY);
 160
 161   /* Init the low level hardware */
 162   HAL_MspInit();
 163
 164   /* Return function status */
 165   return HAL_OK;
 166 }
 167
 168 /**
 169   * @brief This function de-Initializes common part of the HAL and stops the source
 170   *        of time base.
 171   * @note This function is optional.
 172   * @retval HAL status
 173   */
 174 HAL_StatusTypeDef HAL_DeInit(void)
 175 {
 176   /* Reset of all peripherals */
 177   __APB1_FORCE_RESET();
 178   __APB1_RELEASE_RESET();
 179
 180   __APB2_FORCE_RESET();
 181   __APB2_RELEASE_RESET();
 182
 183   __AHB_FORCE_RESET();
 184   __AHB_RELEASE_RESET();
 185
 186   /* De-Init the low level hardware */
 187   HAL_MspDeInit();
 188
 189   /* Return function status */
 190   return HAL_OK;
 191 }
 192
 193 /**
 194   * @brief  Initializes the MSP.
 195   * @retval None
 196   */
 197 __weak void HAL_MspInit(void)
 198 {
 199   /* NOTE : This function Should not be modified, when the callback is needed,
 200             the HAL_MspInit could be implemented in the user file
 201    */
 202 }
 203
 204 /**
 205   * @brief  DeInitializes the MSP.
 206   * @retval None
 207   */
 208 __weak void HAL_MspDeInit(void)
 209 {
 210   /* NOTE : This function Should not be modified, when the callback is needed,
 211             the HAL_MspDeInit could be implemented in the user file
 212    */
 213 }
 214
 215 /**
 216   * @brief This function configures the source of the time base.
 217   *        The time source is configured  to have 1ms time base with a dedicated
 218   *        Tick interrupt priority.
 219   * @note This function is called  automatically at the beginning of program after
 220   *       reset by HAL_Init() or at any time when clock is reconfigured  by HAL_RCC_ClockConfig().
 221   * @note In the default implementation, SysTick timer is the source of time base.
 222   *       It is used to generate interrupts at regular time intervals.
 223   *       Care must be taken if HAL_Delay() is called from a peripheral ISR process,
 224   *       The the SysTick interrupt must have higher priority (numerically lower)
 225   *       than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
 226   *       The function is declared as __Weak  to be overwritten  in case of other
 227   *       implementation  in user file.
 228   * @param TickPriority: Tick interrupt priority.
 229   * @retval HAL status
 230   */
 231 __weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
 232 {
 233   /*Configure the SysTick to have interrupt in 1ms time basis*/
 234   HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
 235
 236   /*Configure the SysTick IRQ priority */
 237   HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority ,0);
 238
 239    /* Return function status */
 240   return HAL_OK;
 241 }
 242
 243 /**
 244   * @}
 245   */
 246
 247 /** @defgroup HAL_Exported_Functions_Group2 HAL Control functions
 248   * @brief    HAL Control functions
 249   *
 250 @verbatim
 251  ===============================================================================
 252                       ##### HAL Control functions #####
 253  ===============================================================================
 254     [..]  This section provides functions allowing to:
 255       (+) Provide a tick value in millisecond
 256       (+) Provide a blocking delay in millisecond
 257       (+) Suspend the time base source interrupt
 258       (+) Resume the time base source interrupt
 259       (+) Get the HAL API driver version
 260       (+) Get the device identifier
 261       (+) Get the device revision identifier
 262       (+) Enable/Disable Debug module during Sleep mode
 263       (+) Enable/Disable Debug module during STOP mode
 264       (+) Enable/Disable Debug module during STANDBY mode
 265
 266 @endverbatim
 267   * @{
 268   */
 269
 270 /**
 271   * @brief This function is called to increment  a global variable "uwTick"
 272   *        used as application time base.
 273   * @note In the default implementation, this variable is incremented each 1ms
 274   *       in Systick ISR.
 275   * @note This function is declared as __weak to be overwritten in case of other
 276   *       implementations in user file.
 277   * @retval None
 278   */
 279 __weak void HAL_IncTick(void)
 280 {
 281   uwTick++;
 282 }
 283
 284 /**
 285   * @brief  Povides a tick value in millisecond.
 286   * @note   The function is declared as __Weak  to be overwritten  in case of other
 287   *       implementations in user file.
 288   * @retval tick value
 289   */
 290 __weak uint32_t HAL_GetTick(void)
 291 {
 292   return uwTick;
 293 }
 294
 295 /**
 296   * @brief Suspend Tick increment.
 297   * @note In the default implementation , SysTick timer is the source of time base. It is
 298   *       used to generate interrupts at regular time intervals. Once HAL_SuspendTick()
 299   *       is called, the the SysTick interrupt will be disabled and so Tick increment
 300   *       is suspended.
 301   * @note This function is declared as __weak to be overwritten in case of other
 302   *       implementations in user file.
 303   * @retval None
 304   */
 305 __weak void HAL_SuspendTick(void)
 306
 307 {
 308   /* Disable SysTick Interrupt */
 309   SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
 310
 311 }
 312
 313 /**
 314   * @brief Resume Tick increment.
 315   * @note In the default implementation , SysTick timer is the source of time base. It is
 316   *       used to generate interrupts at regular time intervals. Once HAL_ResumeTick()
 317   *       is called, the the SysTick interrupt will be enabled and so Tick increment
 318   *       is resumed.
 319   *         The 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_ResumeTick(void)
 324 {
 325   /* Enable SysTick Interrupt */
 326   SysTick->CTRL  |= SysTick_CTRL_TICKINT_Msk;
 327
 328 }
 329
 330 /**
 331   * @brief This function provides accurate delay (in milliseconds) based
 332   *        on variable incremented.
 333   * @note In the default implementation , SysTick timer is the source of time base.
 334   *       It is used to generate interrupts at regular time intervals where uwTick
 335   *       is incremented.
 336   * @note ThiS function is declared as __weak to be overwritten in case of other
 337   *       implementations in user file.
 338   * @param Delay: specifies the delay time length, in milliseconds.
 339   * @retval None
 340   */
 341 __weak void HAL_Delay(__IO uint32_t Delay)
 342 {
 343   uint32_t tickstart = 0;
 344   tickstart = HAL_GetTick();
 345   while((HAL_GetTick() - tickstart) < Delay)
 346   {
 347   }
 348 }
 349
 350 /**
 351   * @brief  This method returns the HAL revision
 352   * @retval version : 0xXYZR (8bits for each decimal, R for RC)
 353   */
 354 uint32_t HAL_GetHalVersion(void)
 355 {
 356  return __STM32F0xx_HAL_VERSION;
 357 }
 358
 359 /**
 360   * @brief  Returns the device revision identifier.
 361   * @retval Device revision identifier
 362   */
 363 uint32_t HAL_GetREVID(void)
 364 {
 365    return((DBGMCU->IDCODE) >> 16);
 366 }
 367
 368 /**
 369   * @brief  Returns the device identifier.
 370   * @retval Device identifier
 371   */
 372 uint32_t HAL_GetDEVID(void)
 373 {
 374    return((DBGMCU->IDCODE) & IDCODE_DEVID_MASK);
 375 }
 376
 377 /**
 378   * @brief  Enable the Debug Module during STOP mode
 379   * @retval None
 380   */
 381 void HAL_EnableDBGStopMode(void)
 382 {
 383   SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
 384 }
 385
 386 /**
 387   * @brief  Disable the Debug Module during STOP mode
 388   * @retval None
 389   */
 390 void HAL_DisableDBGStopMode(void)
 391 {
 392   CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
 393 }
 394
 395 /**
 396   * @brief  Enable the Debug Module during STANDBY mode
 397   * @retval None
 398   */
 399 void HAL_EnableDBGStandbyMode(void)
 400 {
 401   SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
 402 }
 403
 404 /**
 405   * @brief  Disable the Debug Module during STANDBY mode
 406   * @retval None
 407   */
 408 void HAL_DisableDBGStandbyMode(void)
 409 {
 410   CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
 411 }
 412
 413 /**
 414   * @}
 415   */
 416
 417 /**
 418   * @}
 419   */
 420
 421 #endif /* HAL_MODULE_ENABLED */
 422 /**
 423   * @}
 424   */
 425
 426 /**
 427   * @}
 428   */
 429
 430 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/