/** | |
****************************************************************************** | |
* @file stm32l0xx_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) 2016 STMicroelectronics</center></h2> | |
* | |
* Redistribution and use in source and binary forms, with or without modification, | |
* are permitted provided that the following conditions are met: | |
* 1. Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* 3. Neither the name of STMicroelectronics nor the names of its contributors | |
* may be used to endorse or promote products derived from this software | |
* without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* | |
****************************************************************************** | |
*/ | |
/* Includes ------------------------------------------------------------------*/ | |
#include "stm32l0xx_hal.h" | |
/** @addtogroup STM32L0xx_HAL_Driver | |
* @{ | |
*/ | |
#ifdef HAL_MODULE_ENABLED | |
/** @addtogroup HAL | |
* @brief HAL module driver. | |
* @{ | |
*/ | |
/** @addtogroup HAL_Exported_Constants | |
* @{ | |
*/ | |
/** @defgroup SysTick System Tick | |
* @{ | |
*/ | |
/** | |
* @brief uwTick_variable uwTick variable | |
*/ | |
__IO uint32_t uwTick; | |
/** | |
* @} | |
*/ | |
/** @defgroup HAL_Version HAL Version | |
* @{ | |
*/ | |
/** | |
* @brief STM32L0xx HAL Driver version number | |
*/ | |
#define __STM32L0xx_HAL_VERSION_MAIN (0x01U) /*!< [31:24] main version */ | |
#define __STM32L0xx_HAL_VERSION_SUB1 (0x08U) /*!< [23:16] sub1 version */ | |
#define __STM32L0xx_HAL_VERSION_SUB2 (0x02U) /*!< [15:8] sub2 version */ | |
#define __STM32L0xx_HAL_VERSION_RC (0x00U) /*!< [7:0] release candidate */ | |
#define __STM32L0xx_HAL_VERSION ((__STM32L0xx_HAL_VERSION_MAIN << 24U)\ | |
|(__STM32L0xx_HAL_VERSION_SUB1 << 16U)\ | |
|(__STM32L0xx_HAL_VERSION_SUB2 << 8U )\ | |
|(__STM32L0xx_HAL_VERSION_RC)) | |
#define IDCODE_DEVID_MASK ((uint32_t)0x00000FFFU) | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/** @defgroup HAL_Private HAL Private | |
* @{ | |
*/ | |
/** | |
* @} | |
*/ | |
/** @addtogroup HAL_Exported_Functions HAL Exported Functions | |
* @{ | |
*/ | |
/** @addtogroup HAL_Exported_Functions_Group1 | |
* @brief Initialization and de-initialization functions | |
* | |
@verbatim | |
=============================================================================== | |
##### Initialization and de-initialization functions ##### | |
=============================================================================== | |
[..] This section provides functions allowing to: | |
(+) Initializes 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-Initializes 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, Flash preread and Buffer cache, | |
* 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) | |
{ | |
/* Configure Buffer cache, Flash prefetch, Flash preread */ | |
#if (BUFFER_CACHE_DISABLE != 0) | |
__HAL_FLASH_BUFFER_CACHE_DISABLE(); | |
#endif /* BUFFER_CACHE_DISABLE */ | |
#if (PREREAD_ENABLE != 0) | |
__HAL_FLASH_PREREAD_BUFFER_ENABLE(); | |
#endif /* PREREAD_ENABLE */ | |
#if (PREFETCH_ENABLE != 0) | |
__HAL_FLASH_PREFETCH_BUFFER_ENABLE(); | |
#endif /* PREFETCH_ENABLE */ | |
/* Use systick as time base source and configure 1ms tick (default clock after Reset is MSI) */ | |
HAL_InitTick(TICK_INT_PRIORITY); | |
/* Init the low level hardware */ | |
HAL_MspInit(); | |
/* Return function status */ | |
return HAL_OK; | |
} | |
/** | |
* @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(); | |
__HAL_RCC_IOP_FORCE_RESET(); | |
__HAL_RCC_IOP_RELEASE_RESET(); | |
/* De-Init the low level hardware */ | |
HAL_MspDeInit(); | |
/* Return function status */ | |
return HAL_OK; | |
} | |
/** | |
* @brief Initializes 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 DeInitializes 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 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) | |
{ | |
/*Configure the SysTick to have interrupt in 1ms time basis*/ | |
HAL_SYSTICK_Config(SystemCoreClock/1000U); | |
/*Configure the SysTick IRQ priority */ | |
HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority ,0U); | |
/* Return function status */ | |
return HAL_OK; | |
} | |
/** | |
* @} | |
*/ | |
/** @addtogroup HAL_Exported_Functions_Group2 | |
* @brief Peripheral 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 | |
(+) Configure low power mode behavior when the MCU is in Debug mode | |
(+) Manage the VEREFINT feature (activation, lock, output selection) | |
@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++; | |
} | |
/** | |
* @brief Provides 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 provides accurate delay (in ms) based on a 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(__IO uint32_t Delay) | |
{ | |
uint32_t tickstart = 0U; | |
tickstart = HAL_GetTick(); | |
while((HAL_GetTick() - tickstart) < Delay) | |
{ | |
} | |
} | |
/** | |
* @brief Suspends 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 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 */ | |
SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk; | |
} | |
/** | |
* @brief Resumes 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 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 */ | |
SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk; | |
} | |
/** | |
* @brief Returns the HAL revision | |
* @retval version: 0xXYZR (8bits for each decimal, R for RC) | |
*/ | |
uint32_t HAL_GetHalVersion(void) | |
{ | |
return __STM32L0xx_HAL_VERSION; | |
} | |
/** | |
* @brief Returns the device revision identifier. | |
* @retval Device revision identifier | |
*/ | |
uint32_t HAL_GetREVID(void) | |
{ | |
return((DBGMCU->IDCODE) >> 16U); | |
} | |
/** | |
* @brief Returns the device identifier. | |
* @retval Device identifier | |
*/ | |
uint32_t HAL_GetDEVID(void) | |
{ | |
return((DBGMCU->IDCODE) & IDCODE_DEVID_MASK); | |
} | |
/** | |
* @brief Enables the Debug Module during SLEEP mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_EnableDBGSleepMode(void) | |
{ | |
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP); | |
} | |
/** | |
* @brief Disables the Debug Module during SLEEP mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_DisableDBGSleepMode(void) | |
{ | |
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP); | |
} | |
/** | |
* @brief Enables the Debug Module during STOP mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_EnableDBGStopMode(void) | |
{ | |
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP); | |
} | |
/** | |
* @brief Disables the Debug Module during STOP mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_DisableDBGStopMode(void) | |
{ | |
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP); | |
} | |
/** | |
* @brief Enables the Debug Module during STANDBY mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_EnableDBGStandbyMode(void) | |
{ | |
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY); | |
} | |
/** | |
* @brief Disables the Debug Module during STANDBY mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_DisableDBGStandbyMode(void) | |
{ | |
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY); | |
} | |
/** | |
* @brief Enable low power mode behavior when the MCU is in Debug mode. | |
* @param Periph: specifies the low power mode. | |
* This parameter can be any combination of the following values: | |
* @arg DBGMCU_SLEEP: Keep debugger connection during SLEEP mode | |
* @arg DBGMCU_STOP: Keep debugger connection during STOP mode | |
* @arg DBGMCU_STANDBY: Keep debugger connection during STANDBY mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_DBG_EnableLowPowerConfig(uint32_t Periph) | |
{ | |
/* Check the parameters */ | |
assert_param(IS_DBGMCU_PERIPH(Periph)); | |
DBGMCU->CR |= Periph; | |
} | |
/** | |
* @brief Disable low power mode behavior when the MCU is in Debug mode. | |
* @param Periph: specifies the low power mode. | |
* This parameter can be any combination of the following values: | |
* @arg DBGMCU_SLEEP: Keep debugger connection during SLEEP mode | |
* @arg DBGMCU_STOP: Keep debugger connection during STOP mode | |
* @arg DBGMCU_STANDBY: Keep debugger connection during STANDBY mode | |
* @retval None | |
*/ | |
void HAL_DBGMCU_DBG_DisableLowPowerConfig(uint32_t Periph) | |
{ | |
/* Check the parameters */ | |
assert_param(IS_DBGMCU_PERIPH(Periph)); | |
{ | |
DBGMCU->CR &= ~Periph; | |
} | |
} | |
/** | |
* @brief Returns the boot mode as configured by user. | |
* @retval The boot mode as configured by user. The returned value can be one | |
* of the following values: | |
* - 0x00000000 : Boot is configured in Main Flash memory | |
* - 0x00000100 : Boot is configured in System Flash memory | |
* - 0x00000300 : Boot is configured in Embedded SRAM memory | |
*/ | |
uint32_t HAL_SYSCFG_GetBootMode(void) | |
{ | |
return (SYSCFG->CFGR1 & SYSCFG_CFGR1_BOOT_MODE); | |
} | |
/** | |
* @brief Selects the output of internal reference voltage (VREFINT). | |
* The VREFINT output can be routed to(PB0) or | |
* (PB1) or both. | |
* @param SYSCFG_Vrefint_OUTPUT: new state of the Vrefint output. | |
* This parameter can be one of the following values: | |
* @arg SYSCFG_VREFINT_OUT_NONE | |
* @arg SYSCFG_VREFINT_OUT_PB0 | |
* @arg SYSCFG_VREFINT_OUT_PB1 | |
* @arg SYSCFG_VREFINT_OUT_PB0_PB1 | |
* @retval None | |
*/ | |
void HAL_SYSCFG_VREFINT_OutputSelect(uint32_t SYSCFG_Vrefint_OUTPUT) | |
{ | |
/* Check the parameters */ | |
assert_param(IS_SYSCFG_VREFINT_OUT_SELECT(SYSCFG_Vrefint_OUTPUT)); | |
/* Set the output Vrefint pin */ | |
SYSCFG->CFGR3 &= ~(SYSCFG_CFGR3_VREF_OUT); | |
SYSCFG->CFGR3 |= (uint32_t)(SYSCFG_Vrefint_OUTPUT); | |
} | |
/** | |
* @brief Lock the SYSCFG VREF register values | |
* @retval None | |
*/ | |
void HAL_SYSCFG_Enable_Lock_VREFINT(void) | |
{ | |
/* Enable the LOCK by setting REF_LOCK bit in the CFGR3 register */ | |
SET_BIT(SYSCFG->CFGR3, SYSCFG_CFGR3_REF_LOCK); | |
} | |
/** | |
* @brief Unlock the overall SYSCFG VREF register values | |
* @retval None | |
*/ | |
void HAL_SYSCFG_Disable_Lock_VREFINT(void) | |
{ | |
/* Disable the LOCK by setting REF_LOCK bit in the CFGR3 register */ | |
CLEAR_BIT(SYSCFG->CFGR3, SYSCFG_CFGR3_REF_LOCK); | |
} | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
#endif /* HAL_MODULE_ENABLED */ | |
/** | |
* @} | |
*/ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ | |