/** | |
****************************************************************************** | |
* @file stm32l1xx_hal.c | |
* @author MCD Application Team | |
* @brief HAL module driver. | |
* This is the common part of the HAL initialization | |
* | |
@verbatim | |
============================================================================== | |
##### How to use this driver ##### | |
============================================================================== | |
[..] | |
The common HAL driver contains a set of generic and common APIs that can be | |
used by the PPP peripheral drivers and the user to start using the HAL. | |
[..] | |
The HAL contains two APIs categories: | |
(+) Common HAL APIs | |
(+) Services HAL APIs | |
@endverbatim | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© Copyright (c) 2017 STMicroelectronics. | |
* All rights reserved.</center></h2> | |
* | |
* This software component is licensed by ST under BSD 3-Clause license, | |
* the "License"; You may not use this file except in compliance with the | |
* License. You may obtain a copy of the License at: | |
* opensource.org/licenses/BSD-3-Clause | |
* | |
****************************************************************************** | |
*/ | |
/* Includes ------------------------------------------------------------------*/ | |
#include "stm32l1xx_hal.h" | |
/** @addtogroup STM32L1xx_HAL_Driver | |
* @{ | |
*/ | |
/** @defgroup HAL HAL | |
* @brief HAL module driver. | |
* @{ | |
*/ | |
#ifdef HAL_MODULE_ENABLED | |
/* Private typedef -----------------------------------------------------------*/ | |
/* Private define ------------------------------------------------------------*/ | |
/** @defgroup HAL_Private_Defines HAL Private Defines | |
* @{ | |
*/ | |
/** | |
* @brief STM32L1xx HAL Driver version number | |
*/ | |
#define __STM32L1xx_HAL_VERSION_MAIN (0x01) /*!< [31:24] main version */ | |
#define __STM32L1xx_HAL_VERSION_SUB1 (0x04) /*!< [23:16] sub1 version */ | |
#define __STM32L1xx_HAL_VERSION_SUB2 (0x00) /*!< [15:8] sub2 version */ | |
#define __STM32L1xx_HAL_VERSION_RC (0x00) /*!< [7:0] release candidate */ | |
#define __STM32L1xx_HAL_VERSION ((__STM32L1xx_HAL_VERSION_MAIN << 24)\ | |
|(__STM32L1xx_HAL_VERSION_SUB1 << 16)\ | |
|(__STM32L1xx_HAL_VERSION_SUB2 << 8 )\ | |
|(__STM32L1xx_HAL_VERSION_RC)) | |
#define IDCODE_DEVID_MASK (0x00000FFFU) | |
/** | |
* @} | |
*/ | |
/* Private macro -------------------------------------------------------------*/ | |
/* Private variables ---------------------------------------------------------*/ | |
/* Private function prototypes -----------------------------------------------*/ | |
/* Private functions ---------------------------------------------------------*/ | |
/* Exported variables --------------------------------------------------------*/ | |
/** @addtogroup HAL_Exported_Variables | |
* @{ | |
*/ | |
__IO uint32_t uwTick; | |
uint32_t uwTickPrio = (1UL << __NVIC_PRIO_BITS); /* Invalid priority */ | |
uint32_t uwTickFreq = HAL_TICK_FREQ_DEFAULT; /* 1KHz */ | |
/** | |
* @} | |
*/ | |
/* Exported functions --------------------------------------------------------*/ | |
/** @defgroup HAL_Exported_Functions HAL Exported Functions | |
* @{ | |
*/ | |
/** @defgroup HAL_Exported_Functions_Group1 Initialization and de-initialization Functions | |
* @brief Initialization and de-initialization functions | |
* | |
@verbatim | |
=============================================================================== | |
##### Initialization and de-initialization functions ##### | |
=============================================================================== | |
[..] This section provides functions allowing to: | |
(+) Initialize the Flash interface, the NVIC allocation and initial clock | |
configuration. It initializes the source of time base also when timeout | |
is needed and the backup domain when enabled. | |
(+) De-initialize common part of the HAL. | |
(+) Configure the time base source to have 1ms time base with a dedicated | |
Tick interrupt priority. | |
(++) SysTick timer is used by default as source of time base, but user | |
can eventually implement his proper time base source (a general purpose | |
timer for example or other time source), keeping in mind that Time base | |
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and | |
handled in milliseconds basis. | |
(++) Time base configuration function (HAL_InitTick ()) is called automatically | |
at the beginning of the program after reset by HAL_Init() or at any time | |
when clock is configured, by HAL_RCC_ClockConfig(). | |
(++) Source of time base is configured to generate interrupts at regular | |
time intervals. Care must be taken if HAL_Delay() is called from a | |
peripheral ISR process, the Tick interrupt line must have higher priority | |
(numerically lower) than the peripheral interrupt. Otherwise the caller | |
ISR process will be blocked. | |
(++) functions affecting time base configurations are declared as __weak | |
to make override possible in case of other implementations in user file. | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief This function configures the Flash prefetch, | |
* configures time base source, NVIC and Low level hardware | |
* @note This function is called at the beginning of program after reset and before | |
* the clock configuration | |
* @note The time base configuration is based on MSI clock when exiting from Reset. | |
* Once done, time base tick start incrementing. | |
* In the default implementation,Systick is used as source of time base. | |
* the tick variable is incremented each 1ms in its ISR. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_Init(void) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
/* Configure Flash prefetch */ | |
#if (PREFETCH_ENABLE != 0) | |
__HAL_FLASH_PREFETCH_BUFFER_ENABLE(); | |
#endif /* PREFETCH_ENABLE */ | |
/* Set Interrupt Group Priority */ | |
HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4); | |
/* Use systick as time base source and configure 1ms tick (default clock after Reset is MSI) */ | |
if (HAL_InitTick(TICK_INT_PRIORITY) != HAL_OK) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Init the low level hardware */ | |
HAL_MspInit(); | |
} | |
/* Return function status */ | |
return status; | |
} | |
/** | |
* @brief This function de-initializes common part of the HAL and stops the source | |
* of time base. | |
* @note This function is optional. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_DeInit(void) | |
{ | |
/* Reset of all peripherals */ | |
__HAL_RCC_APB1_FORCE_RESET(); | |
__HAL_RCC_APB1_RELEASE_RESET(); | |
__HAL_RCC_APB2_FORCE_RESET(); | |
__HAL_RCC_APB2_RELEASE_RESET(); | |
__HAL_RCC_AHB_FORCE_RESET(); | |
__HAL_RCC_AHB_RELEASE_RESET(); | |
/* De-Init the low level hardware */ | |
HAL_MspDeInit(); | |
/* Return function status */ | |
return HAL_OK; | |
} | |
/** | |
* @brief Initialize the MSP. | |
* @retval None | |
*/ | |
__weak void HAL_MspInit(void) | |
{ | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_MspInit could be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief DeInitialize the MSP. | |
* @retval None | |
*/ | |
__weak void HAL_MspDeInit(void) | |
{ | |
/* NOTE : This function should not be modified, when the callback is needed, | |
the HAL_MspDeInit could be implemented in the user file | |
*/ | |
} | |
/** | |
* @brief This function configures the source of the time base: | |
* The time source is configured to have 1ms time base with a dedicated | |
* Tick interrupt priority. | |
* @note This function is called automatically at the beginning of program after | |
* reset by HAL_Init() or at any time when clock is reconfigured by HAL_RCC_ClockConfig(). | |
* @note In the default implementation, SysTick timer is the source of time base. | |
* It is used to generate interrupts at regular time intervals. | |
* Care must be taken if HAL_Delay() is called from a peripheral ISR process, | |
* The SysTick interrupt must have higher priority (numerically lower) | |
* than the peripheral interrupt. Otherwise the caller ISR process will be blocked. | |
* The function is declared as __weak to be overwritten in case of other | |
* implementation in user file. | |
* @param TickPriority Tick interrupt priority. | |
* @retval HAL status | |
*/ | |
__weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
if (uwTickFreq != 0U) | |
{ | |
/*Configure the SysTick to have interrupt in 1ms time basis*/ | |
if (HAL_SYSTICK_Config(SystemCoreClock / (1000U / uwTickFreq)) == 0U) | |
{ | |
/* Configure the SysTick IRQ priority */ | |
if (TickPriority < (1UL << __NVIC_PRIO_BITS)) | |
{ | |
HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority, 0U); | |
uwTickPrio = TickPriority; | |
} | |
else | |
{ | |
status = HAL_ERROR; | |
} | |
} | |
else | |
{ | |
status = HAL_ERROR; | |
} | |
} | |
else | |
{ | |
status = HAL_ERROR; | |
} | |
/* Return function status */ | |
return status; | |
} | |
/** | |
* @} | |
*/ | |
/** @defgroup HAL_Exported_Functions_Group2 HAL Control functions | |
* @brief HAL Control functions | |
* | |
@verbatim | |
=============================================================================== | |
##### HAL Control functions ##### | |
=============================================================================== | |
[..] This section provides functions allowing to: | |
(+) Provide a tick value in millisecond | |
(+) Provide a blocking delay in millisecond | |
(+) Suspend the time base source interrupt | |
(+) Resume the time base source interrupt | |
(+) Get the HAL API driver version | |
(+) Get the device identifier | |
(+) Get the device revision identifier | |
(+) Get the unique device identifier | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief This function is called to increment a global variable "uwTick" | |
* used as application time base. | |
* @note In the default implementation, this variable is incremented each 1ms | |
* in SysTick ISR. | |
* @note This function is declared as __weak to be overwritten in case of other | |
* implementations in user file. | |
* @retval None | |
*/ | |
__weak void HAL_IncTick(void) | |
{ | |
uwTick += uwTickFreq; | |
} | |
/** | |
* @brief Provide a tick value in millisecond. | |
* @note This function is declared as __weak to be overwritten in case of other | |
* implementations in user file. | |
* @retval tick value | |
*/ | |
__weak uint32_t HAL_GetTick(void) | |
{ | |
return uwTick; | |
} | |
/** | |
* @brief This function returns a tick priority. | |
* @retval tick priority | |
*/ | |
uint32_t HAL_GetTickPrio(void) | |
{ | |
return uwTickPrio; | |
} | |
/** | |
* @brief Set new tick Freq. | |
* @param Freq tick frequency | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SetTickFreq(uint32_t Freq) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
assert_param(IS_TICKFREQ(Freq)); | |
if (uwTickFreq != Freq) | |
{ | |
/* Apply the new tick Freq */ | |
status = HAL_InitTick(uwTickPrio); | |
if (status == HAL_OK) | |
{ | |
uwTickFreq = Freq; | |
} | |
} | |
return status; | |
} | |
/** | |
* @brief Return tick frequency. | |
* @retval tick period in Hz | |
*/ | |
uint32_t HAL_GetTickFreq(void) | |
{ | |
return uwTickFreq; | |
} | |
/** | |
* @brief This function provides minimum delay (in milliseconds) based | |
* on variable incremented. | |
* @note In the default implementation , SysTick timer is the source of time base. | |
* It is used to generate interrupts at regular time intervals where uwTick | |
* is incremented. | |
* @note This function is declared as __weak to be overwritten in case of other | |
* implementations in user file. | |
* @param Delay specifies the delay time length, in milliseconds. | |
* @retval None | |
*/ | |
__weak void HAL_Delay(uint32_t Delay) | |
{ | |
uint32_t tickstart = HAL_GetTick(); | |
uint32_t wait = Delay; | |
/* Add a period to guaranty minimum wait */ | |
if (wait < HAL_MAX_DELAY) | |
{ | |
wait += (uint32_t)(uwTickFreq); | |
} | |
while((HAL_GetTick() - tickstart) < wait) | |
{ | |
} | |
} | |
/** | |
* @brief Suspend the Tick increment. | |
* @note In the default implementation , SysTick timer is the source of time base. It is | |
* used to generate interrupts at regular time intervals. Once HAL_SuspendTick() | |
* is called, the SysTick interrupt will be disabled and so Tick increment | |
* is suspended. | |
* @note This function is declared as __weak to be overwritten in case of other | |
* implementations in user file. | |
* @retval None | |
*/ | |
__weak void HAL_SuspendTick(void) | |
{ | |
/* Disable SysTick Interrupt */ | |
CLEAR_BIT(SysTick->CTRL,SysTick_CTRL_TICKINT_Msk); | |
} | |
/** | |
* @brief Resume the Tick increment. | |
* @note In the default implementation , SysTick timer is the source of time base. It is | |
* used to generate interrupts at regular time intervals. Once HAL_ResumeTick() | |
* is called, the SysTick interrupt will be enabled and so Tick increment | |
* is resumed. | |
* @note This function is declared as __weak to be overwritten in case of other | |
* implementations in user file. | |
* @retval None | |
*/ | |
__weak void HAL_ResumeTick(void) | |
{ | |
/* Enable SysTick Interrupt */ | |
SET_BIT(SysTick->CTRL,SysTick_CTRL_TICKINT_Msk); | |
} | |
/** | |
* @brief Return the HAL revision | |
* @retval version: 0xXYZR (8bits for each decimal, R for RC) | |
*/ | |
uint32_t HAL_GetHalVersion(void) | |
{ | |
return __STM32L1xx_HAL_VERSION; | |
} | |
/** | |
* @brief Return the device revision identifier. | |
* @retval Device revision identifier | |
*/ | |
uint32_t HAL_GetREVID(void) | |
{ | |
return((DBGMCU->IDCODE) >> 16U); | |
} | |
/** | |
* @brief Return the device identifier. | |
* @retval Device identifier | |
*/ | |
uint32_t HAL_GetDEVID(void) | |
{ | |
return((DBGMCU->IDCODE) & IDCODE_DEVID_MASK); | |
} | |
/** | |
* @brief Return the first word of the unique device identifier (UID based on 96 bits) | |
* @retval Device identifier 31:0 bits | |
*/ | |
uint32_t HAL_GetUIDw0(void) | |
{ | |
return(READ_REG(*((uint32_t *)UID_BASE))); | |
} | |
/** | |
* @brief Return the second word of the unique device identifier (UID based on 96 bits) | |
* @retval Device identifier 63:32 bits | |
*/ | |
uint32_t HAL_GetUIDw1(void) | |
{ | |
return(READ_REG(*((uint32_t *)(UID_BASE + 0x4U)))); | |
} | |
/** | |
* @brief Return the third word of the unique device identifier (UID based on 96 bits) | |
* @retval Device identifier 95:64 bits | |
*/ | |
uint32_t HAL_GetUIDw2(void) | |
{ | |
return(READ_REG(*((uint32_t *)(UID_BASE + 0x14U)))); | |
} | |
/** | |
* @} | |
*/ | |
/** @defgroup HAL_Exported_Functions_Group3 DBGMCU Peripheral Control functions | |
* @brief DBGMCU Peripheral Control functions | |
* | |
@verbatim | |
=============================================================================== | |
##### DBGMCU Peripheral Control functions ##### | |
=============================================================================== | |
[..] This section provides functions allowing to: | |
(+) Enable/Disable Debug module during SLEEP mode | |
(+) Enable/Disable Debug module during STOP mode | |
(+) Enable/Disable Debug module during STANDBY mode | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Enable the Debug Module during SLEEP mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_EnableDBGSleepMode(void) | |
{ | |
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP); | |
} | |
/** | |
* @brief Disable the Debug Module during SLEEP mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_DisableDBGSleepMode(void) | |
{ | |
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP); | |
} | |
/** | |
* @brief Enable the Debug Module during STOP mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_EnableDBGStopMode(void) | |
{ | |
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP); | |
} | |
/** | |
* @brief Disable the Debug Module during STOP mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_DisableDBGStopMode(void) | |
{ | |
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP); | |
} | |
/** | |
* @brief Enable the Debug Module during STANDBY mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_EnableDBGStandbyMode(void) | |
{ | |
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY); | |
} | |
/** | |
* @brief Disable the Debug Module during STANDBY mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_DisableDBGStandbyMode(void) | |
{ | |
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY); | |
} | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
#endif /* HAL_MODULE_ENABLED */ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |