2 ******************************************************************************
3 * @file stm32l1xx_hal.c
4 * @author MCD Application Team
6 * @date 5-September-2014
7 * @brief HAL module driver.
8 * This is the common part of the HAL initialization
11 ==============================================================================
12 ##### How to use this driver #####
13 ==============================================================================
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.
18 The HAL contains two APIs' categories:
23 ******************************************************************************
26 * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
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.
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.
50 ******************************************************************************
53 /* Includes ------------------------------------------------------------------*/
54 #include "stm32l1xx_hal.h"
56 /** @addtogroup STM32L1xx_HAL_Driver
61 * @brief HAL module driver.
65 #ifdef HAL_MODULE_ENABLED
67 /* Private typedef -----------------------------------------------------------*/
68 /* Private define ------------------------------------------------------------*/
70 /** @defgroup HAL_Private_Defines HAL Private Defines
75 * @brief STM32L1xx HAL Driver version number V1.0.0
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))
86 #define IDCODE_DEVID_MASK ((uint32_t)0x00000FFF)
92 /* Private macro -------------------------------------------------------------*/
93 /* Private variables ---------------------------------------------------------*/
95 /** @defgroup HAL_Private_Variables HAL Private Variables
99 static __IO uint32_t uwTick;
105 /* Private function prototypes -----------------------------------------------*/
106 /* Private functions ---------------------------------------------------------*/
108 /** @defgroup HAL_Exported_Functions HAL Exported Functions
112 /** @defgroup HAL_Exported_Functions_Group1 Initialization and de-initialization Functions
113 * @brief Initialization and de-initialization functions
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.
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.
157 HAL_StatusTypeDef HAL_Init(void)
159 /* Configure Flash prefetch */
160 #if (PREFETCH_ENABLE != 0)
161 __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
162 #endif /* PREFETCH_ENABLE */
164 /* Set Interrupt Group Priority */
165 HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
167 /* Use systick as time base source and configure 1ms tick (default clock after Reset is MSI) */
168 HAL_InitTick(TICK_INT_PRIORITY);
170 /* Init the low level hardware */
173 /* Return function status */
178 * @brief This function de-Initializes common part of the HAL and stops the source
180 * @note This function is optional.
183 HAL_StatusTypeDef HAL_DeInit(void)
185 /* Reset of all peripherals */
186 __APB1_FORCE_RESET();
187 __APB1_RELEASE_RESET();
189 __APB2_FORCE_RESET();
190 __APB2_RELEASE_RESET();
193 __AHB_RELEASE_RESET();
195 /* De-Init the low level hardware */
198 /* Return function status */
203 * @brief Initializes the MSP.
206 __weak void HAL_MspInit(void)
208 /* NOTE : This function Should not be modified, when the callback is needed,
209 the HAL_MspInit could be implemented in the user file
214 * @brief DeInitializes the MSP.
217 __weak void HAL_MspDeInit(void)
219 /* NOTE : This function Should not be modified, when the callback is needed,
220 the HAL_MspDeInit could be implemented in the user file
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.
240 __weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
242 /*Configure the SysTick to have interrupt in 1ms time basis*/
243 HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
245 /*Configure the SysTick IRQ priority */
246 HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority ,0);
248 /* Return function status */
256 /** @defgroup HAL_Exported_Functions_Group2 HAL Control functions
257 * @brief HAL Control functions
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
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
284 * @note This function is declared as __weak to be overwritten in case of other
285 * implementations in user file.
288 __weak void HAL_IncTick(void)
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.
299 __weak uint32_t HAL_GetTick(void)
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
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.
315 __weak void HAL_Delay(__IO uint32_t Delay)
317 uint32_t tickstart = 0;
318 tickstart = HAL_GetTick();
319 while((HAL_GetTick() - tickstart) < Delay)
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
330 * @note This function is declared as __weak to be overwritten in case of other
331 * implementations in user file.
334 __weak void HAL_SuspendTick(void)
336 /* Disable SysTick Interrupt */
337 CLEAR_BIT(SysTick->CTRL,SysTick_CTRL_TICKINT_Msk);
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
346 * @note This function is declared as __weak to be overwritten in case of other
347 * implementations in user file.
350 __weak void HAL_ResumeTick(void)
352 /* Enable SysTick Interrupt */
353 SET_BIT(SysTick->CTRL,SysTick_CTRL_TICKINT_Msk);
357 * @brief Returns the HAL revision
358 * @retval version: 0xXYZR (8bits for each decimal, R for RC)
360 uint32_t HAL_GetHalVersion(void)
362 return __STM32L1xx_HAL_VERSION;
366 * @brief Returns the device revision identifier.
367 * @retval Device revision identifier
369 uint32_t HAL_GetREVID(void)
371 return((DBGMCU->IDCODE) >> 16);
375 * @brief Returns the device identifier.
376 * @retval Device identifier
378 uint32_t HAL_GetDEVID(void)
380 return((DBGMCU->IDCODE) & IDCODE_DEVID_MASK);
384 * @brief Enable the Debug Module during SLEEP mode
387 void HAL_EnableDBGSleepMode(void)
389 SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
393 * @brief Disable the Debug Module during SLEEP mode
396 void HAL_DisableDBGSleepMode(void)
398 CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
402 * @brief Enable the Debug Module during STOP mode
405 void HAL_EnableDBGStopMode(void)
407 SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
411 * @brief Disable the Debug Module during STOP mode
414 void HAL_DisableDBGStopMode(void)
416 CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
420 * @brief Enable the Debug Module during STANDBY mode
423 void HAL_EnableDBGStandbyMode(void)
425 SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
429 * @brief Disable the Debug Module during STANDBY mode
432 void HAL_DisableDBGStandbyMode(void)
434 CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
445 #endif /* HAL_MODULE_ENABLED */
454 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/