/**+
−
  ******************************************************************************+
−
  * @file    stm32f4xx_hal_gpio.c+
−
  * @author  MCD Application Team+
−
  * @brief   GPIO HAL module driver.+
−
  *          This file provides firmware functions to manage the following +
−
  *          functionalities of the General Purpose Input/Output (GPIO) peripheral:+
−
  *           + Initialization and de-initialization functions+
−
  *           + IO operation functions+
−
  *+
−
  @verbatim+
−
  ==============================================================================+
−
                    ##### GPIO Peripheral features #####+
−
  ==============================================================================+
−
  [..] +
−
  Subject to the specific hardware characteristics of each I/O port listed in the datasheet, each+
−
  port bit of the General Purpose IO (GPIO) Ports, can be individually configured by software+
−
  in several modes:+
−
  (+) Input mode +
−
  (+) Analog mode+
−
  (+) Output mode+
−
  (+) Alternate function mode+
−
  (+) External interrupt/event lines+
−
+
−
  [..]  +
−
  During and just after reset, the alternate functions and external interrupt  +
−
  lines are not active and the I/O ports are configured in input floating mode.+
−
  +
−
  [..]   +
−
  All GPIO pins have weak internal pull-up and pull-down resistors, which can be +
−
  activated or not.+
−
+
−
  [..]+
−
  In Output or Alternate mode, each IO can be configured on open-drain or push-pull+
−
  type and the IO speed can be selected depending on the VDD value.+
−
+
−
  [..]  +
−
  All ports have external interrupt/event capability. To use external interrupt +
−
  lines, the port must be configured in input mode. All available GPIO pins are +
−
  connected to the 16 external interrupt/event lines from EXTI0 to EXTI15.+
−
  +
−
  [..]+
−
  The external interrupt/event controller consists of up to 23 edge detectors +
−
  (16 lines are connected to GPIO) for generating event/interrupt requests (each +
−
  input line can be independently configured to select the type (interrupt or event) +
−
  and the corresponding trigger event (rising or falling or both). Each line can +
−
  also be masked independently. +
−
+
−
                     ##### How to use this driver #####+
−
  ==============================================================================  +
−
  [..]+
−
    (#) Enable the GPIO AHB clock using the following function: __HAL_RCC_GPIOx_CLK_ENABLE(). +
−
+
−
    (#) Configure the GPIO pin(s) using HAL_GPIO_Init().+
−
        (++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure+
−
        (++) Activate Pull-up, Pull-down resistor using "Pull" member from GPIO_InitTypeDef +
−
             structure.+
−
        (++) In case of Output or alternate function mode selection: the speed is +
−
             configured through "Speed" member from GPIO_InitTypeDef structure.+
−
        (++) In alternate mode is selection, the alternate function connected to the IO+
−
             is configured through "Alternate" member from GPIO_InitTypeDef structure.+
−
        (++) Analog mode is required when a pin is to be used as ADC channel +
−
             or DAC output.+
−
        (++) In case of external interrupt/event selection the "Mode" member from +
−
             GPIO_InitTypeDef structure select the type (interrupt or event) and +
−
             the corresponding trigger event (rising or falling or both).+
−
+
−
    (#) In case of external interrupt/event mode selection, configure NVIC IRQ priority +
−
        mapped to the EXTI line using HAL_NVIC_SetPriority() and enable it using+
−
        HAL_NVIC_EnableIRQ().+
−
         +
−
    (#) To get the level of a pin configured in input mode use HAL_GPIO_ReadPin().+
−
            +
−
    (#) To set/reset the level of a pin configured in output mode use +
−
        HAL_GPIO_WritePin()/HAL_GPIO_TogglePin().+
−
    +
−
    (#) To lock pin configuration until next reset use HAL_GPIO_LockPin().+
−
+
−
                 +
−
    (#) During and just after reset, the alternate functions are not +
−
        active and the GPIO pins are configured in input floating mode (except JTAG+
−
        pins).+
−
  +
−
    (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general purpose +
−
        (PC14 and PC15, respectively) when the LSE oscillator is off. The LSE has +
−
        priority over the GPIO function.+
−
  +
−
    (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as +
−
        general purpose PH0 and PH1, respectively, when the HSE oscillator is off. +
−
        The HSE has priority over the GPIO function.+
−
  +
−
  @endverbatim+
−
  ******************************************************************************+
−
  * @attention+
−
  *+
−
  * <h2><center>&copy; COPYRIGHT(c) 2017 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 "stm32f4xx_hal.h"+
−
+
−
/** @addtogroup STM32F4xx_HAL_Driver+
−
  * @{+
−
  */+
−
+
−
/** @defgroup GPIO GPIO+
−
  * @brief GPIO HAL module driver+
−
  * @{+
−
  */+
−
+
−
#ifdef HAL_GPIO_MODULE_ENABLED+
−
+
−
/* Private typedef -----------------------------------------------------------*/+
−
/* Private define ------------------------------------------------------------*/+
−
/** @addtogroup GPIO_Private_Constants GPIO Private Constants+
−
  * @{+
−
  */+
−
#define GPIO_MODE             0x00000003U+
−
#define EXTI_MODE             0x10000000U+
−
#define GPIO_MODE_IT          0x00010000U+
−
#define GPIO_MODE_EVT         0x00020000U+
−
#define RISING_EDGE           0x00100000U+
−
#define FALLING_EDGE          0x00200000U+
−
#define GPIO_OUTPUT_TYPE      0x00000010U+
−
+
−
#define GPIO_NUMBER           16U+
−
/**+
−
  * @}+
−
  */+
−
/* Private macro -------------------------------------------------------------*/+
−
/* Private variables ---------------------------------------------------------*/+
−
/* Private function prototypes -----------------------------------------------*/+
−
/* Private functions ---------------------------------------------------------*/+
−
/* Exported functions --------------------------------------------------------*/+
−
/** @defgroup GPIO_Exported_Functions GPIO Exported Functions+
−
  * @{+
−
  */+
−
+
−
/** @defgroup GPIO_Exported_Functions_Group1 Initialization and de-initialization functions+
−
  *  @brief    Initialization and Configuration functions+
−
  *+
−
@verbatim    +
−
 ===============================================================================+
−
              ##### Initialization and de-initialization functions #####+
−
 ===============================================================================+
−
  [..]+
−
    This section provides functions allowing to initialize and de-initialize the GPIOs+
−
    to be ready for use.+
−
 +
−
@endverbatim+
−
  * @{+
−
  */+
−
+
−
+
−
/**+
−
  * @brief  Initializes the GPIOx peripheral according to the specified parameters in the GPIO_Init.+
−
  * @param  GPIOx where x can be (A..K) to select the GPIO peripheral for STM32F429X device or+
−
  *                      x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.+
−
  * @param  GPIO_Init pointer to a GPIO_InitTypeDef structure that contains+
−
  *         the configuration information for the specified GPIO peripheral.+
−
  * @retval None+
−
  */+
−
void HAL_GPIO_Init(GPIO_TypeDef  *GPIOx, GPIO_InitTypeDef *GPIO_Init)+
−
{+
−
  uint32_t position;+
−
  uint32_t ioposition = 0x00U;+
−
  uint32_t iocurrent = 0x00U;+
−
  uint32_t temp = 0x00U;+
−
+
−
  /* Check the parameters */+
−
  assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));+
−
  assert_param(IS_GPIO_PIN(GPIO_Init->Pin));+
−
  assert_param(IS_GPIO_MODE(GPIO_Init->Mode));+
−
  assert_param(IS_GPIO_PULL(GPIO_Init->Pull));+
−
+
−
  /* Configure the port pins */+
−
  for(position = 0U; position < GPIO_NUMBER; position++)+
−
  {+
−
    /* Get the IO position */+
−
    ioposition = 0x01U << position;+
−
    /* Get the current IO position */+
−
    iocurrent = (uint32_t)(GPIO_Init->Pin) & ioposition;+
−
+
−
    if(iocurrent == ioposition)+
−
    {+
−
      /*--------------------- GPIO Mode Configuration ------------------------*/+
−
      /* In case of Alternate function mode selection */+
−
      if((GPIO_Init->Mode == GPIO_MODE_AF_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))+
−
      {+
−
        /* Check the Alternate function parameter */+
−
        assert_param(IS_GPIO_AF(GPIO_Init->Alternate));+
−
        /* Configure Alternate function mapped with the current IO */+
−
        temp = GPIOx->AFR[position >> 3U];+
−
        temp &= ~(0xFU << ((uint32_t)(position & 0x07U) * 4U)) ;+
−
        temp |= ((uint32_t)(GPIO_Init->Alternate) << (((uint32_t)position & 0x07U) * 4U));+
−
        GPIOx->AFR[position >> 3U] = temp;+
−
      }+
−
+
−
      /* Configure IO Direction mode (Input, Output, Alternate or Analog) */+
−
      temp = GPIOx->MODER;+
−
      temp &= ~(GPIO_MODER_MODER0 << (position * 2U));+
−
      temp |= ((GPIO_Init->Mode & GPIO_MODE) << (position * 2U));+
−
      GPIOx->MODER = temp;+
−
+
−
      /* In case of Output or Alternate function mode selection */+
−
      if((GPIO_Init->Mode == GPIO_MODE_OUTPUT_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_PP) ||+
−
         (GPIO_Init->Mode == GPIO_MODE_OUTPUT_OD) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))+
−
      {+
−
        /* Check the Speed parameter */+
−
        assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));+
−
        /* Configure the IO Speed */+
−
        temp = GPIOx->OSPEEDR; +
−
        temp &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2U));+
−
        temp |= (GPIO_Init->Speed << (position * 2U));+
−
        GPIOx->OSPEEDR = temp;+
−
+
−
        /* Configure the IO Output Type */+
−
        temp = GPIOx->OTYPER;+
−
        temp &= ~(GPIO_OTYPER_OT_0 << position) ;+
−
        temp |= (((GPIO_Init->Mode & GPIO_OUTPUT_TYPE) >> 4U) << position);+
−
        GPIOx->OTYPER = temp;+
−
      }+
−
+
−
      /* Activate the Pull-up or Pull down resistor for the current IO */+
−
      temp = GPIOx->PUPDR;+
−
      temp &= ~(GPIO_PUPDR_PUPDR0 << (position * 2U));+
−
      temp |= ((GPIO_Init->Pull) << (position * 2U));+
−
      GPIOx->PUPDR = temp;+
−
+
−
      /*--------------------- EXTI Mode Configuration ------------------------*/+
−
      /* Configure the External Interrupt or event for the current IO */+
−
      if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE)+
−
      {+
−
        /* Enable SYSCFG Clock */+
−
        __HAL_RCC_SYSCFG_CLK_ENABLE();+
−
+
−
        temp = SYSCFG->EXTICR[position >> 2U];+
−
        temp &= ~(0x0FU << (4U * (position & 0x03U)));+
−
        temp |= ((uint32_t)(GPIO_GET_INDEX(GPIOx)) << (4U * (position & 0x03U)));+
−
        SYSCFG->EXTICR[position >> 2U] = temp;+
−
+
−
        /* Clear EXTI line configuration */+
−
        temp = EXTI->IMR;+
−
        temp &= ~((uint32_t)iocurrent);+
−
        if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT)+
−
        {+
−
          temp |= iocurrent;+
−
        }+
−
        EXTI->IMR = temp;+
−
+
−
        temp = EXTI->EMR;+
−
        temp &= ~((uint32_t)iocurrent);+
−
        if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT)+
−
        {+
−
          temp |= iocurrent;+
−
        }+
−
        EXTI->EMR = temp;+
−
+
−
        /* Clear Rising Falling edge configuration */+
−
        temp = EXTI->RTSR;+
−
        temp &= ~((uint32_t)iocurrent);+
−
        if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE)+
−
        {+
−
          temp |= iocurrent;+
−
        }+
−
        EXTI->RTSR = temp;+
−
+
−
        temp = EXTI->FTSR;+
−
        temp &= ~((uint32_t)iocurrent);+
−
        if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE)+
−
        {+
−
          temp |= iocurrent;+
−
        }+
−
        EXTI->FTSR = temp;+
−
      }+
−
    }+
−
  }+
−
}+
−
+
−
/**+
−
  * @brief  De-initializes the GPIOx peripheral registers to their default reset values.+
−
  * @param  GPIOx where x can be (A..K) to select the GPIO peripheral for STM32F429X device or+
−
  *                      x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.+
−
  * @param  GPIO_Pin specifies the port bit to be written.+
−
  *          This parameter can be one of GPIO_PIN_x where x can be (0..15).+
−
  * @retval None+
−
  */+
−
void HAL_GPIO_DeInit(GPIO_TypeDef  *GPIOx, uint32_t GPIO_Pin)+
−
{+
−
  uint32_t position;+
−
  uint32_t ioposition = 0x00U;+
−
  uint32_t iocurrent = 0x00U;+
−
  uint32_t tmp = 0x00U;+
−
+
−
  /* Check the parameters */+
−
  assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));+
−
  +
−
  /* Configure the port pins */+
−
  for(position = 0U; position < GPIO_NUMBER; position++)+
−
  {+
−
    /* Get the IO position */+
−
    ioposition = 0x01U << position;+
−
    /* Get the current IO position */+
−
    iocurrent = (GPIO_Pin) & ioposition;+
−
+
−
    if(iocurrent == ioposition)+
−
    {+
−
      /*------------------------- GPIO Mode Configuration --------------------*/+
−
      /* Configure IO Direction in Input Floating Mode */+
−
      GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (position * 2U));+
−
+
−
      /* Configure the default Alternate Function in current IO */+
−
      GPIOx->AFR[position >> 3U] &= ~(0xFU << ((uint32_t)(position & 0x07U) * 4U)) ;+
−
+
−
      /* Configure the default value for IO Speed */+
−
      GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2U));+
−
+
−
      /* Configure the default value IO Output Type */+
−
      GPIOx->OTYPER  &= ~(GPIO_OTYPER_OT_0 << position) ;+
−
+
−
      /* Deactivate the Pull-up and Pull-down resistor for the current IO */+
−
      GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << (position * 2U));+
−
+
−
      /*------------------------- EXTI Mode Configuration --------------------*/+
−
      tmp = SYSCFG->EXTICR[position >> 2U];+
−
      tmp &= (0x0FU << (4U * (position & 0x03U)));+
−
      if(tmp == ((uint32_t)(GPIO_GET_INDEX(GPIOx)) << (4U * (position & 0x03U))))+
−
      {+
−
        /* Configure the External Interrupt or event for the current IO */+
−
        tmp = 0x0FU << (4U * (position & 0x03U));+
−
        SYSCFG->EXTICR[position >> 2U] &= ~tmp;+
−
+
−
        /* Clear EXTI line configuration */+
−
        EXTI->IMR &= ~((uint32_t)iocurrent);+
−
        EXTI->EMR &= ~((uint32_t)iocurrent);+
−
        +
−
        /* Clear Rising Falling edge configuration */+
−
        EXTI->RTSR &= ~((uint32_t)iocurrent);+
−
        EXTI->FTSR &= ~((uint32_t)iocurrent);+
−
      }+
−
    }+
−
  }+
−
}+
−
+
−
/**+
−
  * @}+
−
  */+
−
+
−
/** @defgroup GPIO_Exported_Functions_Group2 IO operation functions +
−
  *  @brief   GPIO Read and Write+
−
  *+
−
@verbatim+
−
 ===============================================================================+
−
                       ##### IO operation functions #####+
−
 ===============================================================================+
−
+
−
@endverbatim+
−
  * @{+
−
  */+
−
+
−
/**+
−
  * @brief  Reads the specified input port pin.+
−
  * @param  GPIOx where x can be (A..K) to select the GPIO peripheral for STM32F429X device or+
−
  *                      x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.+
−
  * @param  GPIO_Pin specifies the port bit to read.+
−
  *         This parameter can be GPIO_PIN_x where x can be (0..15).+
−
  * @retval The input port pin value.+
−
  */+
−
GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)+
−
{+
−
  GPIO_PinState bitstatus;+
−
+
−
  /* Check the parameters */+
−
  assert_param(IS_GPIO_PIN(GPIO_Pin));+
−
+
−
  if((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)+
−
  {+
−
    bitstatus = GPIO_PIN_SET;+
−
  }+
−
  else+
−
  {+
−
    bitstatus = GPIO_PIN_RESET;+
−
  }+
−
  return bitstatus;+
−
}+
−
+
−
/**+
−
  * @brief  Sets or clears the selected data port bit.+
−
  *+
−
  * @note   This function uses GPIOx_BSRR register to allow atomic read/modify+
−
  *         accesses. In this way, there is no risk of an IRQ occurring between+
−
  *         the read and the modify access.+
−
  *+
−
  * @param  GPIOx where x can be (A..K) to select the GPIO peripheral for STM32F429X device or+
−
  *                      x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.+
−
  * @param  GPIO_Pin specifies the port bit to be written.+
−
  *          This parameter can be one of GPIO_PIN_x where x can be (0..15).+
−
  * @param  PinState specifies the value to be written to the selected bit.+
−
  *          This parameter can be one of the GPIO_PinState enum values:+
−
  *            @arg GPIO_PIN_RESET: to clear the port pin+
−
  *            @arg GPIO_PIN_SET: to set the port pin+
−
  * @retval None+
−
  */+
−
void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)+
−
{+
−
  /* Check the parameters */+
−
  assert_param(IS_GPIO_PIN(GPIO_Pin));+
−
  assert_param(IS_GPIO_PIN_ACTION(PinState));+
−
+
−
  if(PinState != GPIO_PIN_RESET)+
−
  {+
−
    GPIOx->BSRR = GPIO_Pin;+
−
  }+
−
  else+
−
  {+
−
    GPIOx->BSRR = (uint32_t)GPIO_Pin << 16U;+
−
  }+
−
}+
−
+
−
/**+
−
  * @brief  Toggles the specified GPIO pins.+
−
  * @param  GPIOx Where x can be (A..K) to select the GPIO peripheral for STM32F429X device or+
−
  *                      x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.+
−
  * @param  GPIO_Pin Specifies the pins to be toggled.+
−
  * @retval None+
−
  */+
−
void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)+
−
{+
−
  /* Check the parameters */+
−
  assert_param(IS_GPIO_PIN(GPIO_Pin));+
−
+
−
  GPIOx->ODR ^= GPIO_Pin;+
−
}+
−
+
−
/**+
−
  * @brief  Locks GPIO Pins configuration registers.+
−
  * @note   The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR,+
−
  *         GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH.+
−
  * @note   The configuration of the locked GPIO pins can no longer be modified+
−
  *         until the next reset.+
−
  * @param  GPIOx where x can be (A..F) to select the GPIO peripheral for STM32F4 family+
−
  * @param  GPIO_Pin specifies the port bit to be locked.+
−
  *         This parameter can be any combination of GPIO_PIN_x where x can be (0..15).+
−
  * @retval None+
−
  */+
−
HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)+
−
{+
−
  __IO uint32_t tmp = GPIO_LCKR_LCKK;+
−
+
−
  /* Check the parameters */+
−
  assert_param(IS_GPIO_PIN(GPIO_Pin));+
−
+
−
  /* Apply lock key write sequence */+
−
  tmp |= GPIO_Pin;+
−
  /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */+
−
  GPIOx->LCKR = tmp;+
−
  /* Reset LCKx bit(s): LCKK='0' + LCK[15-0] */+
−
  GPIOx->LCKR = GPIO_Pin;+
−
  /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */+
−
  GPIOx->LCKR = tmp;+
−
  /* Read LCKK bit*/+
−
  tmp = GPIOx->LCKR;+
−
+
−
 if((GPIOx->LCKR & GPIO_LCKR_LCKK) != RESET)+
−
  {+
−
    return HAL_OK;+
−
  }+
−
  else+
−
  {+
−
    return HAL_ERROR;+
−
  }+
−
}+
−
+
−
/**+
−
  * @brief  This function handles EXTI interrupt request.+
−
  * @param  GPIO_Pin Specifies the pins connected EXTI line+
−
  * @retval None+
−
  */+
−
void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)+
−
{+
−
  /* EXTI line interrupt detected */+
−
  if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)+
−
  {+
−
    __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);+
−
    HAL_GPIO_EXTI_Callback(GPIO_Pin);+
−
  }+
−
}+
−
+
−
/**+
−
  * @brief  EXTI line detection callbacks.+
−
  * @param  GPIO_Pin Specifies the pins connected EXTI line+
−
  * @retval None+
−
  */+
−
__weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)+
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{+
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  /* Prevent unused argument(s) compilation warning */+
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  UNUSED(GPIO_Pin);+
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  /* NOTE: This function Should not be modified, when the callback is needed,+
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           the HAL_GPIO_EXTI_Callback could be implemented in the user file+
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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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#endif /* HAL_GPIO_MODULE_ENABLED */+
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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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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/+
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