text: /**
    ******************************************************************************
    * @file    stm32f7xx_ll_gpio.c
    * @author  MCD Application Team
    * @brief   GPIO LL module driver.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; 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
    *
    ******************************************************************************
    */
  #if defined(USE_FULL_LL_DRIVER)
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f7xx_ll_gpio.h"
  #include "stm32f7xx_ll_bus.h"
  #ifdef  USE_FULL_ASSERT
  #include "stm32_assert.h"
  #else
  #define assert_param(expr) ((void)0U)
  #endif
  
  /** @addtogroup STM32F7xx_LL_Driver
    * @{
    */
  
  #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) || defined (GPIOH) || defined (GPIOI) || defined (GPIOJ) || defined (GPIOK)
  
  /** @addtogroup GPIO_LL
    * @{
    */
  
  /* Private types -------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  /* Private constants ---------------------------------------------------------*/
  /* Private macros ------------------------------------------------------------*/
  /** @addtogroup GPIO_LL_Private_Macros
    * @{
    */
  #define IS_LL_GPIO_PIN(__VALUE__)          (((0x00000000U) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL)))
  
  #define IS_LL_GPIO_MODE(__VALUE__)         (((__VALUE__) == LL_GPIO_MODE_INPUT)     ||\
                                              ((__VALUE__) == LL_GPIO_MODE_OUTPUT)    ||\
                                              ((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\
                                              ((__VALUE__) == LL_GPIO_MODE_ANALOG))
  
  #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__)  (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL)  ||\
                                              ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN))
  
  #define IS_LL_GPIO_SPEED(__VALUE__)        (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW)       ||\
                                              ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM)    ||\
                                              ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH)      ||\
                                              ((__VALUE__) == LL_GPIO_SPEED_FREQ_VERY_HIGH))
  
  #define IS_LL_GPIO_PULL(__VALUE__)         (((__VALUE__) == LL_GPIO_PULL_NO)   ||\
                                              ((__VALUE__) == LL_GPIO_PULL_UP)   ||\
                                              ((__VALUE__) == LL_GPIO_PULL_DOWN))
  
  #define IS_LL_GPIO_ALTERNATE(__VALUE__)    (((__VALUE__) == LL_GPIO_AF_0  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_1  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_2  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_3  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_4  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_5  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_6  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_7  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_8  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_9  )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_10 )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_11 )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_12 )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_13 )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_14 )   ||\
                                              ((__VALUE__) == LL_GPIO_AF_15 ))
  /**
    * @}
    */
  
  /* Private function prototypes -----------------------------------------------*/
  
  /* Exported functions --------------------------------------------------------*/
  /** @addtogroup GPIO_LL_Exported_Functions
    * @{
    */
  
  /** @addtogroup GPIO_LL_EF_Init
    * @{
    */
  
  /**
    * @brief  De-initialize GPIO registers (Registers restored to their default values).
    * @param  GPIOx GPIO Port
    * @retval An ErrorStatus enumeration value:
    *          - SUCCESS: GPIO registers are de-initialized
    *          - ERROR:   Wrong GPIO Port
    */
  ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx)
  {
    ErrorStatus status = SUCCESS;
  
    /* Check the parameters */
    assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
  
    /* Force and Release reset on clock of GPIOx Port */
    if (GPIOx == GPIOA)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOA);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOA);
    }
    else if (GPIOx == GPIOB)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOB);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOB);
    }
    else if (GPIOx == GPIOC)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOC);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOC);
    }
  #if defined(GPIOD)
    else if (GPIOx == GPIOD)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOD);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOD);
    }
  #endif /* GPIOD */
  #if defined(GPIOE)
    else if (GPIOx == GPIOE)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOE);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOE);
    }
  #endif /* GPIOE */
  #if defined(GPIOF)
    else if (GPIOx == GPIOF)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOF);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOF);
    }
  #endif /* GPIOF */
  #if defined(GPIOG)
    else if (GPIOx == GPIOG)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOG);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOG);
    }
  #endif /* GPIOG */
  #if defined(GPIOH)
    else if (GPIOx == GPIOH)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOH);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOH);
    }
  #endif /* GPIOH */
  #if defined(GPIOI)
    else if (GPIOx == GPIOI)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOI);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOI);
    }
  #endif /* GPIOI */
  #if defined(GPIOJ)
    else if (GPIOx == GPIOJ)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOJ);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOJ);
    }
  #endif /* GPIOJ */
  #if defined(GPIOK)
    else if (GPIOx == GPIOK)
    {
      LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOK);
      LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOK);
    }
  #endif /* GPIOK */
    else
    {
      status = ERROR;
    }
  
    return (status);
  }
  
  /**
    * @brief  Initialize GPIO registers according to the specified parameters in GPIO_InitStruct.
    * @param  GPIOx GPIO Port
    * @param  GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
    *         that contains the configuration information for the specified GPIO peripheral.
    * @retval An ErrorStatus enumeration value:
    *          - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content
    *          - ERROR:   Not applicable
    */
  ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct)
  {
    uint32_t pinpos     = 0x00000000U;
    uint32_t currentpin = 0x00000000U;
  
    /* Check the parameters */
    assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
    assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin));
    assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode));
    assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull));
  
    /* ------------------------- Configure the port pins ---------------- */
    /* Initialize  pinpos on first pin set */
    pinpos = POSITION_VAL(GPIO_InitStruct->Pin);
  
    /* Configure the port pins */
    while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00000000U)
    {
      /* Get current io position */
      currentpin = (GPIO_InitStruct->Pin) & (0x00000001U << pinpos);
  
      if (currentpin)
      {
        if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
        {
          /* Check Speed mode parameters */
          assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed));
  
          /* Speed mode configuration */
          LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed);
  
          /* Check Output mode parameters */
          assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType));
  
          /* Output mode configuration*/
          LL_GPIO_SetPinOutputType(GPIOx, GPIO_InitStruct->Pin, GPIO_InitStruct->OutputType);
        }
  
        /* Pull-up Pull down resistor configuration*/
        LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull);
  
        if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)
        {
          /* Check Alternate parameter */
          assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate));
  
          /* Speed mode configuration */
          if (POSITION_VAL(currentpin) < 0x00000008U)
          {
            LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate);
          }
          else
          {
            LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate);
          }
        }
        /* Pin Mode configuration */
        LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode);
      }
      pinpos++;
    }
    return (SUCCESS);
  }
  
  /**
    * @brief Set each @ref LL_GPIO_InitTypeDef field to default value.
    * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
    *                          whose fields will be set to default values.
    * @retval None
    */
  
  void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct)
  {
    /* Reset GPIO init structure parameters values */
    GPIO_InitStruct->Pin        = LL_GPIO_PIN_ALL;
    GPIO_InitStruct->Mode       = LL_GPIO_MODE_ANALOG;
    GPIO_InitStruct->Speed      = LL_GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL;
    GPIO_InitStruct->Pull       = LL_GPIO_PULL_NO;
    GPIO_InitStruct->Alternate  = LL_GPIO_AF_0;
  }
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) || defined (GPIOH) || defined (GPIOI) || defined (GPIOJ) || defined (GPIOK) */
  
  /**
    * @}
    */
  
  #endif /* USE_FULL_LL_DRIVER */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  