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/** |
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****************************************************************************** |
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* @file stm32f0xx_ll_cortex.h |
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* @author MCD Application Team |
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* @brief Header file of CORTEX LL module. |
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@verbatim |
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============================================================================== |
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##### How to use this driver ##### |
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============================================================================== |
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[..] |
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The LL CORTEX driver contains a set of generic APIs that can be |
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used by user: |
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(+) SYSTICK configuration used by @ref LL_mDelay and @ref LL_Init1msTick |
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functions |
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(+) Low power mode configuration (SCB register of Cortex-MCU) |
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(+) API to access to MCU info (CPUID register) |
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@endverbatim |
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****************************************************************************** |
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* @attention |
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* |
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> |
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* |
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* Redistribution and use in source and binary forms, with or without modification, |
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* are permitted provided that the following conditions are met: |
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* 1. Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* 3. Neither the name of STMicroelectronics nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************** |
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*/ |
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/* Define to prevent recursive inclusion -------------------------------------*/ |
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#ifndef __STM32F0xx_LL_CORTEX_H |
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#define __STM32F0xx_LL_CORTEX_H |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* Includes ------------------------------------------------------------------*/ |
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#include "stm32f0xx.h" |
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/** @addtogroup STM32F0xx_LL_Driver |
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* @{ |
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*/ |
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/** @defgroup CORTEX_LL CORTEX |
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* @{ |
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*/ |
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/* Private types -------------------------------------------------------------*/ |
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/* Private variables ---------------------------------------------------------*/ |
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/* Private constants ---------------------------------------------------------*/ |
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/* Private macros ------------------------------------------------------------*/ |
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/* Exported types ------------------------------------------------------------*/ |
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/* Exported constants --------------------------------------------------------*/ |
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/** @defgroup CORTEX_LL_Exported_Constants CORTEX Exported Constants |
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* @{ |
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*/ |
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/** @defgroup CORTEX_LL_EC_CLKSOURCE_HCLK SYSTICK Clock Source |
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* @{ |
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*/ |
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#define LL_SYSTICK_CLKSOURCE_HCLK_DIV8 0x00000000U /*!< AHB clock divided by 8 selected as SysTick clock source.*/ |
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#define LL_SYSTICK_CLKSOURCE_HCLK SysTick_CTRL_CLKSOURCE_Msk /*!< AHB clock selected as SysTick clock source. */ |
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/** |
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* @} |
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*/ |
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/** |
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* @} |
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*/ |
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/* Exported macro ------------------------------------------------------------*/ |
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/* Exported functions --------------------------------------------------------*/ |
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/** @defgroup CORTEX_LL_Exported_Functions CORTEX Exported Functions |
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* @{ |
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*/ |
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/** @defgroup CORTEX_LL_EF_SYSTICK SYSTICK |
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* @{ |
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*/ |
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/** |
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* @brief This function checks if the Systick counter flag is active or not. |
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* @note It can be used in timeout function on application side. |
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* @rmtoll STK_CTRL COUNTFLAG LL_SYSTICK_IsActiveCounterFlag |
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* @retval State of bit (1 or 0). |
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*/ |
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__STATIC_INLINE uint32_t LL_SYSTICK_IsActiveCounterFlag(void) |
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{ |
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return ((SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk) == (SysTick_CTRL_COUNTFLAG_Msk)); |
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} |
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/** |
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* @brief Configures the SysTick clock source |
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* @rmtoll STK_CTRL CLKSOURCE LL_SYSTICK_SetClkSource |
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* @param Source This parameter can be one of the following values: |
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* @arg @ref LL_SYSTICK_CLKSOURCE_HCLK_DIV8 |
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* @arg @ref LL_SYSTICK_CLKSOURCE_HCLK |
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* @retval None |
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*/ |
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__STATIC_INLINE void LL_SYSTICK_SetClkSource(uint32_t Source) |
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{ |
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if (Source == LL_SYSTICK_CLKSOURCE_HCLK) |
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{ |
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SET_BIT(SysTick->CTRL, LL_SYSTICK_CLKSOURCE_HCLK); |
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} |
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else |
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{ |
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CLEAR_BIT(SysTick->CTRL, LL_SYSTICK_CLKSOURCE_HCLK); |
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} |
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} |
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/** |
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* @brief Get the SysTick clock source |
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* @rmtoll STK_CTRL CLKSOURCE LL_SYSTICK_GetClkSource |
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* @retval Returned value can be one of the following values: |
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* @arg @ref LL_SYSTICK_CLKSOURCE_HCLK_DIV8 |
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* @arg @ref LL_SYSTICK_CLKSOURCE_HCLK |
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*/ |
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__STATIC_INLINE uint32_t LL_SYSTICK_GetClkSource(void) |
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{ |
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return READ_BIT(SysTick->CTRL, LL_SYSTICK_CLKSOURCE_HCLK); |
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} |
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/** |
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* @brief Enable SysTick exception request |
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* @rmtoll STK_CTRL TICKINT LL_SYSTICK_EnableIT |
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* @retval None |
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*/ |
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__STATIC_INLINE void LL_SYSTICK_EnableIT(void) |
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{ |
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SET_BIT(SysTick->CTRL, SysTick_CTRL_TICKINT_Msk); |
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} |
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/** |
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* @brief Disable SysTick exception request |
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* @rmtoll STK_CTRL TICKINT LL_SYSTICK_DisableIT |
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* @retval None |
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*/ |
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__STATIC_INLINE void LL_SYSTICK_DisableIT(void) |
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{ |
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CLEAR_BIT(SysTick->CTRL, SysTick_CTRL_TICKINT_Msk); |
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} |
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/** |
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* @brief Checks if the SYSTICK interrupt is enabled or disabled. |
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* @rmtoll STK_CTRL TICKINT LL_SYSTICK_IsEnabledIT |
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* @retval State of bit (1 or 0). |
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*/ |
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__STATIC_INLINE uint32_t LL_SYSTICK_IsEnabledIT(void) |
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{ |
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return (READ_BIT(SysTick->CTRL, SysTick_CTRL_TICKINT_Msk) == (SysTick_CTRL_TICKINT_Msk)); |
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} |
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/** |
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* @} |
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*/ |
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/** @defgroup CORTEX_LL_EF_LOW_POWER_MODE LOW POWER MODE |
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* @{ |
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*/ |
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/** |
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* @brief Processor uses sleep as its low power mode |
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* @rmtoll SCB_SCR SLEEPDEEP LL_LPM_EnableSleep |
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* @retval None |
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*/ |
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__STATIC_INLINE void LL_LPM_EnableSleep(void) |
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{ |
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/* Clear SLEEPDEEP bit of Cortex System Control Register */ |
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CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk)); |
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} |
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/** |
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* @brief Processor uses deep sleep as its low power mode |
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* @rmtoll SCB_SCR SLEEPDEEP LL_LPM_EnableDeepSleep |
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* @retval None |
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*/ |
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__STATIC_INLINE void LL_LPM_EnableDeepSleep(void) |
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{ |
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/* Set SLEEPDEEP bit of Cortex System Control Register */ |
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SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk)); |
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} |
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/** |
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* @brief Configures sleep-on-exit when returning from Handler mode to Thread mode. |
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* @note Setting this bit to 1 enables an interrupt-driven application to avoid returning to an |
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* empty main application. |
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* @rmtoll SCB_SCR SLEEPONEXIT LL_LPM_EnableSleepOnExit |
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* @retval None |
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*/ |
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__STATIC_INLINE void LL_LPM_EnableSleepOnExit(void) |
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{ |
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/* Set SLEEPONEXIT bit of Cortex System Control Register */ |
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SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk)); |
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} |
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/** |
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* @brief Do not sleep when returning to Thread mode. |
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* @rmtoll SCB_SCR SLEEPONEXIT LL_LPM_DisableSleepOnExit |
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* @retval None |
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*/ |
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__STATIC_INLINE void LL_LPM_DisableSleepOnExit(void) |
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{ |
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/* Clear SLEEPONEXIT bit of Cortex System Control Register */ |
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CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk)); |
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} |
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/** |
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* @brief Enabled events and all interrupts, including disabled interrupts, can wakeup the |
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* processor. |
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* @rmtoll SCB_SCR SEVEONPEND LL_LPM_EnableEventOnPend |
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* @retval None |
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*/ |
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__STATIC_INLINE void LL_LPM_EnableEventOnPend(void) |
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{ |
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/* Set SEVEONPEND bit of Cortex System Control Register */ |
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SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk)); |
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} |
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/** |
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* @brief Only enabled interrupts or events can wakeup the processor, disabled interrupts are |
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* excluded |
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* @rmtoll SCB_SCR SEVEONPEND LL_LPM_DisableEventOnPend |
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* @retval None |
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*/ |
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__STATIC_INLINE void LL_LPM_DisableEventOnPend(void) |
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{ |
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/* Clear SEVEONPEND bit of Cortex System Control Register */ |
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CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk)); |
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} |
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/** |
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* @} |
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*/ |
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/** @defgroup CORTEX_LL_EF_MCU_INFO MCU INFO |
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* @{ |
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*/ |
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/** |
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* @brief Get Implementer code |
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* @rmtoll SCB_CPUID IMPLEMENTER LL_CPUID_GetImplementer |
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* @retval Value should be equal to 0x41 for ARM |
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*/ |
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__STATIC_INLINE uint32_t LL_CPUID_GetImplementer(void) |
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{ |
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return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_IMPLEMENTER_Msk) >> SCB_CPUID_IMPLEMENTER_Pos); |
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} |
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/** |
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* @brief Get Variant number (The r value in the rnpn product revision identifier) |
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* @rmtoll SCB_CPUID VARIANT LL_CPUID_GetVariant |
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* @retval Value between 0 and 255 (0x0: revision 0) |
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*/ |
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__STATIC_INLINE uint32_t LL_CPUID_GetVariant(void) |
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{ |
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return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_VARIANT_Msk) >> SCB_CPUID_VARIANT_Pos); |
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} |
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/** |
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* @brief Get Architecture number |
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* @rmtoll SCB_CPUID ARCHITECTURE LL_CPUID_GetArchitecture |
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* @retval Value should be equal to 0xC for Cortex-M0 devices |
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*/ |
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__STATIC_INLINE uint32_t LL_CPUID_GetArchitecture(void) |
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{ |
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return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_ARCHITECTURE_Msk) >> SCB_CPUID_ARCHITECTURE_Pos); |
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} |
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/** |
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* @brief Get Part number |
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* @rmtoll SCB_CPUID PARTNO LL_CPUID_GetParNo |
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* @retval Value should be equal to 0xC20 for Cortex-M0 |
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*/ |
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__STATIC_INLINE uint32_t LL_CPUID_GetParNo(void) |
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{ |
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return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_PARTNO_Msk) >> SCB_CPUID_PARTNO_Pos); |
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} |
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/** |
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* @brief Get Revision number (The p value in the rnpn product revision identifier, indicates patch release) |
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* @rmtoll SCB_CPUID REVISION LL_CPUID_GetRevision |
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* @retval Value between 0 and 255 (0x1: patch 1) |
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*/ |
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__STATIC_INLINE uint32_t LL_CPUID_GetRevision(void) |
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{ |
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return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_REVISION_Msk) >> SCB_CPUID_REVISION_Pos); |
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} |
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/** |
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* @} |
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*/ |
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/** |
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* @} |
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*/ |
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/** |
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* @} |
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*/ |
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/** |
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* @} |
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*/ |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* __STM32F0xx_LL_CORTEX_H */ |
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |