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/**

  ******************************************************************************

  * @file    stm32f1xx_ll_gpio.c

  * @author  MCD Application Team

  * @brief   GPIO LL module driver.

  ******************************************************************************

  * @attention

  *

  * <h2><center>&copy; 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.

  *

  ******************************************************************************

  */

#if defined(USE_FULL_LL_DRIVER)

/* Includes ------------------------------------------------------------------*/

#include "stm32f1xx_ll_gpio.h"

#include "stm32f1xx_ll_bus.h"

#ifdef  USE_FULL_ASSERT

#include "stm32_assert.h"

#else

#define assert_param(expr) ((void)0U)

#endif

/** @addtogroup STM32F1xx_LL_Driver

  * @{

  */

#if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG)

/** @addtogroup GPIO_LL

  * @{

  */

/* Private types -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private constants ---------------------------------------------------------*/

/* Private macros ------------------------------------------------------------*/

/** @addtogroup GPIO_LL_Private_Macros

  * @{

  */

#define IS_LL_GPIO_PIN(__VALUE__)          ((((__VALUE__) & LL_GPIO_PIN_ALL)!= 0U) &&\

                                            (((__VALUE__) & (~LL_GPIO_PIN_ALL))== 0U))

#define IS_LL_GPIO_MODE(__VALUE__)         (((__VALUE__) == LL_GPIO_MODE_ANALOG)       ||\

                                            ((__VALUE__) == LL_GPIO_MODE_FLOATING)     ||\

                                            ((__VALUE__) == LL_GPIO_MODE_INPUT)        ||\

                                            ((__VALUE__) == LL_GPIO_MODE_OUTPUT)       ||\

                                            ((__VALUE__) == LL_GPIO_MODE_ALTERNATE))

#define IS_LL_GPIO_SPEED(__VALUE__)        (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW)       ||\

                                            ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM)    ||\

                                            ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH))

#define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__)  (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL)  ||\

                                            ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN))

#define IS_LL_GPIO_PULL(__VALUE__)         (((__VALUE__) == LL_GPIO_PULL_DOWN)   ||\

                                            ((__VALUE__) == LL_GPIO_PULL_UP))

/**

  * @}

  */

/* 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_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOA);

    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOA);

  }

  else if (GPIOx == GPIOB)

  {

    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOB);

    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOB);

  }

  else if (GPIOx == GPIOC)

  {

    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOC);

    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOC);

  }

  else if (GPIOx == GPIOD)

  {

    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOD);

    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOD);

  }

#if defined(GPIOE)

  else if (GPIOx == GPIOE)

  {

    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOE);

    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOE);

  }

#endif

#if defined(GPIOF)

  else if (GPIOx == GPIOF)

  {

    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOF);

    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOF);

  }

#endif

#if defined(GPIOG)

  else if (GPIOx == GPIOG)

  {

    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOG);

    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOG);

  }

#endif

  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 pinmask;

  uint32_t pinpos;

  uint32_t currentpin;

  /* Check the parameters */

  assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));

  assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin));

  /* ------------------------- Configure the port pins ---------------- */

  /* Initialize  pinpos on first pin set */

  pinmask = ((GPIO_InitStruct->Pin) << GPIO_PIN_MASK_POS) >> GPIO_PIN_NB;

  pinpos = POSITION_VAL(pinmask);

  /* Configure the port pins */

  while ((pinmask  >> pinpos) != 0U)

  {

    /* skip if bit is not set */

    if ((pinmask & (1U << pinpos)) != 0U)

    {

      /* Get current io position */

      if (pinpos < GPIO_PIN_MASK_POS)

      {

        currentpin = (0x00000101U << pinpos);

      }

      else

      {

        currentpin = ((0x00010001U << (pinpos - GPIO_PIN_MASK_POS)) | 0x04000000U);

      }

      /* Check Pin Mode and Pin Pull parameters */

      assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode));

      assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull));

      /* Pin Mode configuration */

      LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode);

      /* Pull-up Pull-down resistor configuration*/

      LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull);

      if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))

      {

        /* Check speed and Output mode parameters */

        assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed));

        assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType));

        /* Speed mode configuration */

        LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed);

        /* Output mode configuration*/

        LL_GPIO_SetPinOutputType(GPIOx, currentpin, GPIO_InitStruct->OutputType);

      }

    }

    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_FLOATING;

  GPIO_InitStruct->Speed      = LL_GPIO_SPEED_FREQ_LOW;

  GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_OPENDRAIN;

  GPIO_InitStruct->Pull       = LL_GPIO_PULL_DOWN;

}

/**

  * @}

  */

/**

  * @}

  */

/**

  * @}

  */

#endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) */

/**

  * @}

  */

#endif /* USE_FULL_LL_DRIVER */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/